DATE: 23 (D i zoit - cer.org.za · DATE: 23 (D i zoit 290 No. 42053 GOVERNMENT GAZETTE, 23 NOVEMBER 2018 DEPARTMENT OF WATER AND SANITATION NO. 1298 23 NOVEMBER 2018 1298 National

GENERAL NOTICE

NOTICE OF 2018

DEPARTMENT OF WATER AND SANITATION

NATIONAL WATER ACT, 1998(ACT NO.36 OF 1998)

PROPOSED CLASSES OF WATER RESOURCE AND RESOURCE QUALITY OBJECTIVESFOR THE BREEDE -GOURITZ WATER MANAGEMENT AREA

I, Gugile Nkwinti, Minister of Water and Sanitation, hereby in terms of section 13(4) of the NationalWater Act, 1998 (Act No. 36 of 1998) publish, for public comment, the proposed classes of waterresources and the proposed resource quality objectives for the Breede -Gouritz Water ManagementArea, in the Schedule, to be determined under S13(1) of the Act.

Any person who wishes to submit written comments with regard to the proposed classes of waterresources and the proposed resource quality objectives should submit the comments within 60 daysfrom the date of publication of this Notice to:

Director: Water Resource ClassificationAttention: Ms Lebogang MatlalaDepartment of Water and SanitationNdinaye Building 5046178 Francis Baard StreetPrivate Bag x 313Pretoria0001Facsimile: 012 336 6712Email: matlalal @dws.gov.za

MR NKWINTI GE (MP)MINISTER OF WATER AND SANITATIONDATE: 23 (D i zoit

290 No. 42053 GOVERNMENT GAZETTE, 23 NOVEMBER 2018

DEPARTMENT OF WATER AND SANITATION

NO. 1298 23 NOVEMBER 20181298 National Water Act (36/1998): Proposed classes of water resources and resource quality objectives for the Breede-Gouritz Water Management Area 42053

http://www.greengazette.co.za/acts/national-water-act_1998-036



http://www.greengazette.co.za/government-gazette


STAATSKOERANT, 23 NOVEMBER 2018 No. 42053 291

1

SCHEDULE

DESCRIPTION OF THE WATER RESOURCE

The proposed water resource classes and resource quality objectives are determined for all or part of every significant water resource as set out below: Water Management Area: Breede-Gouritz Drainage Region: G40-G50, H10- H90, J10-J40, K10-K70 Tertiary Drainage Region River(s): Breede Overberg Area: Breede River, Rivieronderend River, Overberg

River, as well as other smaller coastal rivers. Gouritz Coastal Area: Gouritz River, Buffels River, Touws River, Groot River, Gamka River, Olifants River, Kammanassie River, and smaller coastal rivers.

A. PROPOSED WATER RESOURCE CLASSES AS REQUIRED IN TERMS OF SECTION

13(4)(a)(i)(aa) OF THE NATIONAL WATER ACT, 1998

i. The proposed water resource classes for Breede-Gouritz Water Management Area are listed in Table 1 according to the overall class per integrated unit of analysis (IUA), indicated in Figure 1 for Breede Overberg Area and indicated in Figure 2 for Gouritz Coastal Area.

ii. IUAs are classified in terms of their extent of permissible utilisation and protection as either Class I: indicating high environmental protection and minimal utilisation; Class II indicating moderate protection and moderate utilisation; and Class III indicating sustainable minimal protection and high utilisation.

iii. Table 1 provides the IUA, its water resource class and its respective catchment configuration. The catchment configuration consists of a number of biophysical nodes representing river reaches or resource units (RUs). The ecological category to be maintained for each RU in the IUA is provided.

B. RESOURCE QUALITY OBJECTIVES OF WATER RESOURCES AS REQUIRED IN TERMS

OF SECTION 13(4)(a)(i)(bb) OF THE NATIONAL WATER ACT, 1998 i. Resource Quality Objectives (RQOs) are defined for each prioritised RU for every IUA in

terms of water quantity, habitat and biota, and water quality. Prioritised RUs for Breede Overberg Area are indicated in Figure 1 and prioritised RUs for Gouritz Coastal Area are indicated in Figure 2.

ii. Table 2 to Table 17 provide the RQOs for RIVERS in priority RUs.

iii. Table 18 to Table 26 provide the RQOs for ESTUARIES in priority RUs.

iv. Table 27 to Table 40 provide the RQOs for GROUNDWATER in priority RUs.

v. RQOs will apply from the date signed off as determined in terms of Section 13(1) of the National Water Act, 1998, unless otherwise specified by the Minister.




http://www.greengazette.co.za/staatskoerant

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tuar

y Bx

i3

A 0.

75



9In

tegr

ated

Uni

t of A

naly

sis

(IUA)

W

ater

Res

ourc

e Cl

ass

for I

UA

Qua

tern

ary

Catc

hmen

t RU

Re

sour

ce N

ame

Biop

hysi

cal N

ode

Nam

e TE

C Na

tura

l MAR

(m

illio

n m

3 /a)

F11

Low

er B

reed

e R

enos

terv

eld

II

H70

A

Leeu

Riv

er

Niv

24

E 5.

80

H70

B

Klip

Riv

er

Niv

24a

E 24

.50

H70

B

Bree

de R

iver

N

v2

C

1701

.40

H70

C

H

uis

Riv

er

Nvi

i14

C

3.20

H

70C

Trad

ouw

Riv

er

Nii3

B

19.4

0 H

70F

Bu

ffelja

gs R

iver

N

iv25

E

119.

40

H70

G

F11-

R17

Br

eede

Riv

er

Niii4

C

18

32.7

0 H

70H

Bree

de R

iver

N

viii3

B

1841

.20

H70

J

Slan

g R

iver

N

iv26

E

10.0

0 H

70K

F11-

E11

Bree

de E

stua

ry

Nxi

2 B

1022

.56

C6

Gam

ka B

uffe

ls

II

J11C

Buffe

ls R

iver

gi

v34

A 13

.10

J11F

Buffe

ls R

iver

gv

25

C

24.3

0 J2

1A

G

amka

Riv

er

gv18

B

26.7

0 J2

1D

G

amka

Riv

er

giv3

B

31.9

0 J2

2F

Ko

ekem

oers

Riv

er

giv1

C

7.

40

J22K

Leeu

Riv

er

giv2

C

17

.10

J23C

Gam

ka R

iver

gv

17

B 58

.20

J23F

Gam

ka R

iver

gi

v21

B 68

.00

J23J

Gam

ka R

iver

gv

27

C

69.6

0 J2

4D

D

wyk

a R

iver

gv

14

A 4.

00

E8 T

ouw

s III

J12C

Yste

rdam

s R

iver

gi

v30

D

2.80

J1

2B

D

onki

es R

iver

gi

v31

D

6.90

J1

2D

To

uws

Riv

er

giv2

8 D

16

.40

J12H

Touw

s R

iver

gi

v27

B 26

.40

J12K

Brak

Riv

er

giv2

6 C

2.

90

J12L

E8

-R18

D

orin

g R

iver

gv

iii1

C/D

2.

90

J12L

E8

-R19

To

uws

Riv

er

gv5

B/C

33

.50

J11H

E8

-R20

Bu

ffels

Riv

er

gv4

C

27.4

0 J1

1J

E8-R

21

Gro

ot R

iver

gv

6 D

29

.70

J11K

Gro

ot R

iver

gi

v32

D

30.5

0 J1

3A

G

root

Riv

er

gv7

C

77.7

0 J1

3C

E8-R

22

Gro

ot R

iver

gi

i3

B 78

.10



10

Inte

grat

ed U

nit o

f Ana

lysi

s (IU

A)

Wat

er R

esou

rce

Clas

s fo

r IUA

Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Bi

ophy

sica

l Nod

e Na

me

TEC

Natu

ral M

AR

(mill

ion

m3 /a

)

D7

Gou

ritz-

Olif

ants

; Low

er

Gou

ritz

III

J25A

D

7-R

23

Gam

ka R

iver

gi

v20

C

79.8

0 J2

5D

N

els

Riv

er

giv1

8 E

10.9

0 J2

5E

G

amka

Riv

er

gii2

C

11

1.80

J3

1C

D7-

R24

O

lifan

ts R

iver

gi

ii2

C

11.8

0 J3

2E

Tr

aka

Riv

er

giv1

5 C

/D

2.80

J3

3B

O

lifan

ts R

iver

gv

33

D

25.0

0 J3

3D

M

eirin

gs R

iver

gv

21

C

21.4

0 J3

3F

O

lifan

ts R

iver

gi

v11

E 79

.90

J34C

D

7-R

25

Kam

man

assi

e R

iver

gv

36

C/D

41

.20

J34F

Kam

man

assi

e R

iver

gi

v10

D

59.2

0 J3

5A

G

robb

elaa

rs R

iver

gv

ii2

C

16.9

0 J3

5A

G

robb

elaa

rs R

iver

gi

v9

E 30

.70

J35D

Olif

ants

Riv

er

gv19

E

224.

50

J35F

Olif

ants

Riv

er

giv1

7 D

25

3.40

F13

Low

er G

ourit

z II

J40A

Gou

ritz

Riv

er

giv1

6 C

39

4.90

J4

0B

F13-

R26

G

ourit

z R

iver

gi

4 C

48

9.10

J4

0C

G

ourit

z R

iver

gv

28

D

21.4

0 J4

0D

G

ourit

z R

iver

gv

9 C

57

1.80

J4

0E

F13-

E12

Gou

ritz

Estu

ary

Gxi

1 C

29

4.69

F12

Dui

wen

hoks

III

H80

B

Dui

wen

hoks

Riv

er

giii5

E

62.5

0 H

80C

Dui

wen

hoks

Riv

er

gv11

D

75

.10

H80

D

F12-

R27

D

uiw

enho

ks R

iver

gi

ii8

D

83.3

0 H

80E

F12-

E13

Dui

wen

hoks

Est

uary

G

xi2

B 73

.65

I18

Hes

sequ

a III

H90

B

Korin

te R

iver

gi

ii6

D

34.2

0 H

90A

I18-

R28

G

ouko

u R

iver

gi

ii7

C/D

50

.90

H90

C

G

ouko

u R

iver

gv

10

D

92.9

0 H

90D

Gou

kou

Riv

er

gv41

C

10

4.90

H

90E

I18-

E14

Gou

kou

Estu

ary

Gxi

3 C

89

.94



11

Inte

grat

ed U

nit o

f Ana

lysi

s (IU

A)

Wat

er R

esou

rce

Clas

s fo

r IUA

Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Bi

ophy

sica

l Nod

e Na

me

TEC

Natu

ral M

AR

(mill

ion

m3 /a

)

G14

Gro

ot B

rak

III

K10D

Bran

dwag

Riv

er

giv2

5 D

17

.90

K10E

Moo

rdku

il R

iver

gv

39

D

15.7

0 K1

0F

G14

-E15

Kl

ein-

Brak

est

uary

G

xi4

C

39.1

0 K2

0A

G14

-R29

G

root

-Bra

k R

iver

gv

iii2

B/C

15

.30

K20A

Varin

g R

iver

gv

iii12

C/D

6.

00

K20A

Varin

g R

iver

gv

iii3

D

8.40

K2

0A

G

root

-Bra

k R

iver

gv

ii7

B/C

27

.00

K20A

G

14-E

16

Gro

ot-B

rak

estu

ary

Gxi

5 E

16.7

7 K1

0A

G14

-E17

Bl

inde

est

uary

G

xi19

B

0.90

K1

0A

G14

-E18

Tw

eeku

ilen

estu

ary

Gxi

20

D

0.94

K1

0A

G14

-E19

G

eric

ke e

stua

ry

Gxi

21

D

0.29

K1

0B

G14

-E20

H

arte

nbos

est

uary

G

xi22

D

4.

15

G15

Coa

stal

II

K30A

Maa

lgat

e R

iver

gv

iii4

D

15.3

0 K3

0A

M

aalg

ate

Riv

er

gvii8

D

22

.84

K30A

G

15-E

21

Maa

lgat

e Es

tuar

y G

xi6

B 29

.81

K30B

G

15-R

30

Mal

gas

Riv

er

gvii9

C

8.

16

K30B

Gw

aing

Riv

er

gviii6

E

13.9

2 K3

0B

G15

-E22

G

wai

ng E

stua

ry

Gxi

7 B

22.6

4 K3

0C

Sw

art R

iver

gv

iii7

D

16.1

0 K3

0C

G15

-R31

Ka

aim

ans

Riv

er

gvii1

1 B

17.5

3 K3

0C

Si

lver

Riv

er

gviii8

B

14.9

0 K3

0C

G15

-E23

Ka

aim

ans

Estu

ary

Gxi

8 B

35.3

2 K3

0D

To

uws

Riv

er

gvii1

2 B

16.7

0 K3

0D

Kl

ein

Riv

er

gx8

D

2.50

K3

0D

G15

-E24

W

ilder

ness

Est

uary

G

xi9

B 29

.01

K40A

G

15-R

32

Die

p R

iver

gi

ii10

B 12

.40

K40B

Hoe

kraa

l Riv

er

giii1

3 B

27.9

0 K4

0C

G15

-R33

Ka

rata

ra R

iver

gv

ii13

B 11

.20

K40C

Kara

tara

Riv

er

giii1

1 B

33.9

0 K4

0D

G15

-E25

Sw

artv

lei E

stua

ry

Gxi

10

B 76

.19

K40E

G

15-R

34

Gou

kam

ma

Riv

er

gviii9

B/

C

30.4

0 K4

0E

G15

-E26

G

ouka

mm

a Es

tuar

y G

xi11

B

46.2

5 K5

0A

G15

-R35

Kn

ysna

Riv

er

gvii1

4 B

26.5

0 K5

0A

Kn

ysna

Riv

er

giii1

2 B

46.6

0



12

Inte

grat

ed U

nit o

f Ana

lysi

s (IU

A)

Wat

er R

esou

rce

Clas

s fo

r IUA

Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Bi

ophy

sica

l Nod

e Na

me

TEC

Natu

ral M

AR

(mill

ion

m3 /a

)

K50B

G

15-R

36

Gou

na R

iver

gv

iii11

A/B

27.6

0 K5

0B

G15

-E27

Kn

ysna

Est

uary

G

xi12

B

68.8

3 K6

0G

N

oetz

ie R

iver

gv

iii10

B 4.

80

K60G

G

15-E

28

Noe

tsie

est

uary

G

xi13

B

3.59

K6

0G

Pi

esan

g R

iver

gx

3 E

7.30

K6

0G

G15

-E29

Pi

esan

g Es

tuar

y G

xi14

C

5.

12

K60C

G

15-R

37

Keur

boom

s R

iver

gi

v6

C

46.1

0 K6

0D

Pa

lmie

t Riv

er

giv5

A

42.1

0 K6

0E

Ke

urbo

oms

Riv

er

gx9

B 91

.30

K60F

Bito

u R

iver

gi

v4

C

23.6

0 K6

0G

G15

-E30

Ke

urbo

oms

Estu

ary

Gxi

15

A 13

1.60

K7

0A

Bu

ffels

Riv

er

gx4

B/C

1.

80

K70A

G

15-E

31

Mat

jies

Estu

ary

Gxi

16

C

3.25

K7

0A

So

ut R

iver

gx

5 B

3.80

K7

0A

G15

-E32

So

ut(O

os) E

stua

ry

Gxi

17

A 5.

99

K70A

G

15-E

33

Gro

ot(W

es) E

stua

ry

Gxi

23

B 11

.10

K70B

Blou

kran

s R

iver

gv

ii15

B 31

.20

K70B

G

15-E

34

Blou

kran

s Es

tuar

y G

xi18

A

11.1

0



13

Tabl

e 2:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s A1

Upp

er B

reed

e Tr

ibut

arie

s

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

A1 Upper Breede Tributaries

II

H10F

A1-R01

Breede River

nviii1

D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Bree

de R

iver

in

a c

ondi

tion

equa

l to

or

bette

r tha

n a

D c

ateg

ory.

Mon

ths

Oct Nov Dec Jan Feb Mar Apr May Jun Jul Aug Sep

Maintenance flows (million cubic metres)

High 1.651

0 1.651

0 0 0 0 0

5.502 0

32.397 13.009

Low 6.667 4.007 2.105

1.93 1.268 1.754 2.343 3.544 6.452 7.719

10.526 7.81

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) R

iver

nut

rient

leve

ls m

ust

be m

aint

aine

d in

a

mes

otro

phic

or b

ette

r co

nditi

on.

≤ 0.

075

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

th

at d

o no

t adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

≤ 55

milli

Siem

ens/

met

re E

C (9

5th

perc

entil

e)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n D

O ≥

6 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) At

razi

ne

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) En

dosu

lfan

≤ 0.

0013

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

D c

ateg

ory

(42-

57%

). D

cat

egor

y (4

2-57

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a D

cat

egor

y (4

2-57

%).

D c

ateg

ory

(42-

57%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s >

50%

Biot

a Fi

sh

FRAI

sco

re

FRAI

sho

uld

be w

ithin

a D

ca

tego

ry (4

2-57

%).

D c

ateg

ory

(42-

57%

)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

D D

cat

egor

y (4

2-57

%)



14

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Inve

rtebr

ate

dive

rsity

ca

tego

ry (4

2-57

%)

SASS

sco

re >

70,

ASP

T >

5.0

Num

ber o

f fam

ilies

> 15

fam

ilies

at a

bund

ance

s A

- C

A1 Upper Breede Tributaries

II

H10J

A1-R02

Molenaars River

nvii2

B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Mol

enaa

rs

Riv

er in

a c

ondi

tion

equa

l to

or b

ette

r tha

n a

B ca

tego

ry.

Mon

ths



High 3.434 0.454

0 0

0.454 0

0.454 1.797 1.797 8.005 3.434 3.434

Low 3.381 2.506 1.584 1.022 0.869 0.909 1.356 2.479 3.588 4.149

4.39 4.002

Qua

lity

Nut

rient

s Ph

osph

ate

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at

an o

ligot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

) To

tal i

norg

anic

ni

troge

n (T

IN)

≤ 0

.70

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

th

at d

o no

t adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

4.5

≥ pH

≤ 7

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Idea

l cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

B ca

tego

ry (4

2-57

%).

B ca

tego

ry (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a B

cat

egor

y (8

2 -87

%)

B ca

tego

ry (8

2-87

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s

Biot

a Fi

sh

FRAI

sco

re

FRAI

sho

uld

be w

ithin

a E

ca

tego

ry (2

2-37

%).

E ca

tego

ry (2

2-37

%)



15

Tabl

e 3:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s A2

Bre

ede

Wor

king

Trib

utar

ies

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

A2 Breede Working Tributaries

III

H20G

A2-R03

Hex River

nvii7

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Hex

R

iver

in a

con

ditio

n eq

ual t

o or

bet

ter

than

a C

cat

egor

y.

Mai

nten

ance

low

flow

s M

aint

enan

ce h

igh

flow

s

Mon

ths



High 0.387 0.395

0 0 0 0 0

1.137 1.098 6.801 2.797 2.803

Low 2.998 2.649 1.888

1.18 1.066 0.943 1.142 1.652

2.26 3.067

3.54 3.333

Qua

lity

Nut

rient

s Ph

osph

ate

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

≤ 55

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) At

razi

ne

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) En

dosu

lfan

≤ 0.

0013

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

a C

/D c

ateg

ory

(57-

62%

). C

/D c

ateg

ory

(57-

62%

)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a D

cat

egor

y (4

2-57

%).

D c

ateg

ory

(42-

57%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Biot

a

Fish

FR

AI s

core

FR

AI s

houl

d be

with

in a

D

cate

gory

(42-

57%

). D

cat

egor

y (4

2-57

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

C

cate

gory

(62 -

77%

).

C c

ateg

ory

(62-

77%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

100

, ASP

T >

6.3



16

Tabl

e 4:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s A3

Mid

dle

Bree

de R

enos

terv

eld

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

A3 Middle Breede Renosterveld

III

H40F

A3-R04

Breede River

nvii8

C

/D Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Bree

de R

iver

in

a c

ondi

tion

equa

l to

or

bette

r tha

n a

C/D

cat

egor

y.

Mon

ths



High 3.704

0 0 0 0 0 0

16.107 32.902 76.916 31.869 18.949

Low 14.575

8.743 3.449 4.796 1.461 3.181 4.262

11.161 22.326 36.912 33.451 26.791

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

≤ 55

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) At

razi

ne

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) En

dosu

lfan

≤ 0.

0013

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

C c

ateg

ory

(52-

67%

). C

cat

egor

y (6

2-77

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a C

cat

egor

y (5

2-67

%).

C c

ateg

ory

(62-

77%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s >

30%

Biot

a Fi

sh

FRAI

sco

re

FRAI

sho

uld

be w

ithin

a D

ca

tego

ry (4

2-57

%).

D c

ateg

ory

(42-

57%

)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

D

D c

ateg

ory

(42-

57%

)



17

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Inve

rtebr

ate

dive

rsity

ca

tego

ry (4

2-57

%).

SASS

sco

re <

45,

ASP

T >

4.3

Num

ber o

f fam

ilies

> 14

fam

ilies

at A

- C

abu

ndan

ce

A3 Middle Breede Renosterveld

III

H50B

A3-R05

Breede River

ni2

D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Bree

de R

iver

in

a c

ondi

tion

equa

l to

or

bette

r tha

n a

D c

ateg

ory.

Mon

ths



High 0

3.227 0 0 0 0 0

37.538 7.323

36.389 16.731

0

Low 13.406

8.861 3.095 2.454 2.911 1.301 3.367 4.395 9.942

13.992 19.944 17.315

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt

stat

e le

vels

. 95

%til

e ≤

220

milli

Siem

ens/

met

re E

C

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Wat

er te

mpe

ratu

re

No

mor

e th

an 2

°C c

hang

e in

nat

ural

m

onth

ly ra

nge

(min

imum

and

max

imum

)

Toxi

ns

n/a

Toxi

city

leve

ls m

ust n

ot

pose

a th

reat

to a

quat

ic

ecos

yste

ms.

n/

a

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

95%

tile

≤ 16

5 cf

u/10

0ml E

sche

richi

a co

li



18

Tabl

e 5:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s B4

Riv

erso

nder

end

Thee

wat

ers

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

B4 Riversonderend Theewaters

III

H60B

B4-R06

Du Toits River nv

ii10

B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Du

Toits

Riv

er

in a

con

ditio

n eq

ual t

o or

be

tter t

han

a B

cate

gory

.

Mon

ths



High 0.369 0.122

0 0 0 0 0

1.794 2.585 3.218

0.54 1.081

Low 1.406 1.041 0.658 0.425 0.362 0.376 0.564 1.032 1.491 1.725 1.825 1.663

Qua

lity

Nut

rient

s Ph

osph

ate

(PO

4-P) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er in

an

olig

otro

phic

con

ditio

n

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

) To

tal i

norg

anic

ni

troge

n (T

IN)

≤ 0

.70

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

mus

t be

mai

ntai

ned

in a

n Id

eal

cate

gory

≤

30 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Idea

l cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)


III

H60D

B4-R07

Riviersonderend River

nv7

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Riv

iers

onde

rend

Riv

er in

a

cond

ition

equ

al to

or b

ette

r th

an a

D c

ateg

ory.

Mon

ths



High 0.65 0.65

0.426 0.437 0.451

0 0

3.079 2.983 7.927

19.787 7.927

Low 10.539

6.134 1.421 0.799 0.593 0.542

2.32 3.019 7.023

10.297 13.51

11.009

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

≤ 55

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

pH ra

nge

pH, t

empe

ratu

re, a

nd

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)



19

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

varia

bles

Dis

solv

ed o

xyge

n

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

pe

rcen

tile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)


III

H60E

B4-R08

Baviaans River

niv2

8 B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Bavi

aans

Riv

er

in a

con

ditio

n eq

ual t

o or

be

tter t

han

a B

cate

gory

.

Mon

ths



High 0.026

0 0 0

0.026 0

0.026 0.068 0.068 0.127 0.296 0.127

Low 0.292

0.24 0.109 0.117 0.059 0.029 0.049 0.029 0.092 0.153 0.197 0.247

Qua

lity

Nut

rient

s Ph

osph

ate

(PO

4-P) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t an

olig

otro

phic

con

ditio

n.

≤ 0

.025

milli

gram

s pe

r litr

e PO

4-P

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

TIN

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

ms

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

4.5

≥ pH

≤ 7

.0 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Idea

l cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

B ca

tego

ry (8

2-87

%).

B ca

tego

ry (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a B

cat

egor

y (8

2 -87

%).

B ca

tego

ry (8

2-87

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s



20

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s >

20%

Biot

a

Fish

FR

AI s

core

FR

AI s

houl

d be

with

in a

n A/

B ca

tego

ry (8

7-92

%).

A/B

cate

gory

(87-

92%

)

Inve

rtebr

ates

MIR

AI s

core

M

IRAI

sco

re to

be

with

in

A/B

cate

gory

(87 -

92%

).

A/B

cate

gory

(87-

92%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

160

, ASP

T >

7.5

Num

ber o

f fam

ilies

> 15

fam

ilies

at a

bund

ance

s A

- C


III

H60F

B4-R09


nv9

D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Riv

iers

onde

rend

Riv

er in

a

cond

ition

equ

al to

or b

ette

r th

an a

D c

ateg

ory.

Mon

ths



High 0

0.726 0

0.488 0 0 0

3.442 3.334

8.86 22.114

3.334

Low 4.019 3.087 1.053 0.893 0.663 0.606 2.593

3.19 7.717

11.163 12.12

12.038

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

≤ 55

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

4.5

≥ pH

≤ 7

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

D c

ateg

ory

(42-

57%

). D

cat

egor

y (4

2-57

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a D

cat

egor

y (4

2 -57

%).

D c

ateg

ory

(42-

57%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies



21

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s >

30%

Biot

a

Fish

FR

AI s

core

FR

AI s

houl

d be

with

in a

D

cate

gory

(42-

57%

). D

cat

egor

y (4

2-57

%)

Inve

rtebr

ates

MIR

AI s

core

M

IRAI

sco

re to

be

with

in

C/D

cat

egor

y (5

7-62

%).

C/D

cat

egor

y (5

7-62

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 4

0, A

SPT

scor

e >

4.3

Num

ber o

f fam

ilies

> 25

fam

ilies

at a

bund

ance

A -

C

Tabl

e 6:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s F9

Low

er B

reed

e Re

nost

erve

ld

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

F9 Lower Breede Renosterveld

III

H60L

F9-R10


ni3

D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Riv

iers

onde

rend

Riv

er in

a

cond

ition

equ

al to

or b

ette

r th

an a

D c

ateg

ory.

Mon

ths



High 0

0.849 0

0.571 0 0 0

4.024 3.899 10.36

25.859 3.899

Low 4.699 3.609 1.231 1.044 0.775 0.709 3.032

3.73 9.023

13.054 14.173 14.076

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adv

erse

ly a

ffect

aq

uatic

eco

syst

ems

95th

%til

e ≤

85 m

illiSi

emen

s/m

etre

EC

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)



22

Tabl

e 7:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s B5

Ove

rber

g W

est

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

B5 Overberg West

II

G40C

B5-R11

Palmiet River

piii1

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

lo

w fl

ows

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Palm

iet R

iver

in a

co

nditi

on e

qual

to o

r bet

ter t

han

a B

cate

gory

.

Mon

ths



High 0.413 0.093

0 0 0 0 0

0.723 1.413

2.17 0.435 0.871

Low 1.438 1.054

0.56 0.267 0.179 0.169 0.266 0.604 1.127 1.523

1.73 1.69

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er in

an

olig

otro

phic

con

ditio

n.

≤ 0

.025

milli

gram

s pe

r litr

e PO

4-P

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

TIN

Salts

El

ectri

cal

cond

uctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adve

rsel

y af

fect

aqu

atic

ec

osys

tem

s

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

4.5

≥ pH

≤ 7

.0 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed

oxyg

en

≥ 8

milli

gram

s pe

r litr

e (5

th p

erce

ntile

)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

eco

syst

ems.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in D

ca

tego

ry (4

2-57

%).

B ca

tego

ry (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a B

/C c

ateg

ory

(77-

82%

). B/

C c

ateg

ory

(77-

82%

)

Biot

a

Fish

FR

AI s

core

FR

AI s

houl

d be

with

in a

n E

cate

gory

(22-

37%

). E

cate

gory

(22-

37%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

B/C

ca

tego

ry (7

7 -82

%).

B/C

cat

egor

y (7

7-82

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

10, A

SPT

> 6.

5

Num

ber o

f fa

milie

s

Five

fam

ilies,

Cor

ydal

idae

, Elm

idae

, H

ydro

psyc

hida

e, C

ordu

lidae

, C

hlor

ocyp

hida

e



23

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

B5 Overberg West

II

G40D

B5-R12

Palmiet River

piii2

B/

C Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

lo

w fl

ows

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Palm

iet R

iver

in a

co

nditi

on e

qual

to o

r bet

ter t

han

a B/

C c

ateg

ory.

Mon

ths



High 1.67 0.38

0 0 0 0 0

3.643 6.722 9.654

1.88 3.759

Low 7.642 5.516 2.919 1.374 0.943 0.898 1.512 3.519 6.382 8.317 9.401 8.932

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t a

mes

otro

phic

or b

ette

r con

ditio

n. ≤

0.07

5 m

illigr

ams/

litre

(50th

per

cent

ile)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adve

rsel

y af

fect

aqu

atic

ec

osys

tem

s

≤ 55

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed

oxyg

en

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Toxi

ns

Atra

zine

Toxi

city

leve

ls m

ust n

ot p

ose

a th

reat

to a

quat

ic e

cosy

stem

s.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Iron

(Mn)

≤

0.1

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) M

anga

nese

(M

n)

≤ 0.

15 m

illigr

ams

per l

itre

(95th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in B

ca

tego

ry (8

2-87

%).

B ca

tego

ry (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

FRAI

sho

uld

be w

ithin

an

E ca

tego

ry (2

3-37

%).

B/C

cat

egor

y (7

7-82

%)

Biot

a

Fish

FR

AI s

core

VE

GR

AI le

vel 3

sho

uld

be

with

in a

B/C

cat

egor

y (7

7-82

%).

E ca

tego

ry (2

2-37

%)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

B/C

ca

tego

ry (7

7-82

%).

B/C

cat

egor

y (7

7-82

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

10, A

SPT

> 6.

5

Num

ber o

f fa

milie

s

Five

fam

ilies,

Cor

ydal

idae

, Elm

idae

, H

ydro

psyc

hida

e, C

ordu

lidae

, C

hlor

ocyp

hida

e



24

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

B5 Overberg West

II

G40D

B5-R13

Palmiet River

piii3

B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

lo

w fl

ows

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Palm

iet R

iver

in a

co

nditi

on e

qual

to o

r bet

ter t

han

a B

cate

gory

.

Mon

ths



High 0.049 0.097 1.907 0.954 0.954 0.954 0.954 8.623 2.385 8.302 14.21

9 0.049

Low 10.02

6 4.71 2.463 1.955 1.118 1.488 2.142 3.016 11.08

5 12.838 13.49

12.78

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t a

mes

otro

phic

or b

ette

r con

ditio

n. ≤

0.0

25 m

illigr

ams

per l

itre

(50th

pe

rcen

tile)

To

tal i

norg

anic

ni

troge

n (T

IN)

≤ 0

.70

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at le

vels

that

do

not

adve

rsel

y af

fect

aqu

atic

ec

osys

tem

s

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

5.0

≥ pH

≤ 7

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed

oxyg

en

≥ 8

milli

gram

s pe

r litr

e (5

th p

erce

ntile

)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

eco

syst

ems.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in a

B

cate

gory

(82-

87%

). B

cate

gory

(82-

87%

)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a B

cat

egor

y (8

2-87

%).

B ca

tego

ry (8

2-87

%)

Biot

a

Fish

FR

AI s

core

FR

AI s

houl

d be

with

in a

D

cate

gory

(42-

57%

). A

cate

gory

(92-

100%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

a B

ca

tego

ry (8

2 -87

%).

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

10, A

SPT

> 7.

0

Num

ber o

f fa

milie

s

9 fa

milie

s, E

phem

erel

lidae

, Le

ptop

hleb

idae

, Hep

tage

niid

ae,

Tric

oryt

hida

e, E

lmid

ae, C

oryd

alid

ae,

Tric

hopt

era

case

d ca

ddis

2 o

r > ty

pes,

Py

raus

tidae

, Ath

eric

idae



25

Tabl

e 8:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s F1

0 O

verb

erg

East

Ren

oste

rvel

d

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

F10 Overberg East Renosterveld

II

G40K

F10-R14

Klein River

nv23

C

/D Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

lo

w fl

ows

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Klei

n R

iver

in a

co

nditi

on e

qual

to o

r bet

ter t

han

a C

/D c

ateg

ory.

Mon

ths



High 0.398 0.179

0 0 0 0 0

0.516 0.767 0.502 2.013 0.502

Low 0.465 0.358 0.199 0.091 0.065 0.064 0.126 0.196 0.293 0.413 0.603 0.541

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t a

mes

otro

phic

or b

ette

r con

ditio

n. ≤

0.07

5 m

illigr

ams/

litre

(50th

per

cent

ile)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 18

0 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed

oxyg

en

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

eco

syst

ems.

≤

0.07

9 m

illigr

ams

per l

itre

(95th

per

cent

ile)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in C

ca

tego

ry (6

2-77

%).

C c

ateg

ory

(62-

77%

)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a D

cat

egor

y (4

2-57

%).

D c

ateg

ory

(42-

57%

)

Biot

a Fi

sh

FRAI

sco

re

FRAI

sho

uld

be w

ithin

a E

ca

tego

ry (2

2-37

%).

E ca

tego

ry (2

2-37

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

C

cate

gory

(62-

77%

). C

cat

egor

y (6

2-77

%)



26

Tabl

e 9:

Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s H1

7 O

verb

erg

East

Fyn

bos

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

H17 Overberg East Fynbos

II

H17

H17-R15

Nuwejaar River

ni4

C/D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

lo

w fl

ows

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Nuw

ejaa

rs R

iver

in a

co

nditi

on e

qual

to o

r bet

ter t

han

a C

/D c

ateg

ory.

Mon

ths



High 0.115 0.052

0 0 0 0 0

0.129 0.232 0.108 0.393 0.108

Low 0.055 0.046

0.03 0.022 0.022

0.02 0.03

0.035 0.049 0.056 0.065 0.059

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t a

mes

otro

phic

or b

ette

r con

ditio

n.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l in

orga

nic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay le

vels

. ≤

170

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

hea

lth. 6.

5 ≥

pH ≤

8.5

(5th

and

95th

per

cent

iles)

D

isso

lved

ox

ygen

≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in a

D

cate

gory

(42-

57%

). D

cat

egor

y (4

2-57

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sc

ore

VEG

RAI

leve

l 3 s

houl

d be

with

in

an E

cat

egor

y (2

2-37

%).

E ca

tego

ry (2

2-37

%)

Biot

a Fi

sh

FRAI

sco

re

FRAI

sho

uld

be w

ithin

a E

ca

tego

ry (2

2-37

%).

E ca

tego

ry (2

2-37

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

D

cate

gory

(42-

57%

). D

cat

egor

y (4

2-57

%)


II

G50D

H17-R16

Kars River

nv24

B/

C Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

lo

w fl

ows

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Kars

Riv

er in

a

cond

ition

equ

al to

or b

ette

r tha

n a

B/C

cat

egor

y.

Mon

ths



High 0.301 0.157

0 0 0 0 0

0.268 0.349

0.17 0.651

0.17

Low 0.322 0.282 0.168 0.121 0.109 0.119 0.191 0.204

0.25 0.255 0.304 0.283

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t a

mes

otro

phic

or b

ette

r con

ditio

n.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l in

orga

nic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)



27

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Salts

El

ectri

cal

cond

uctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay le

vels

. ≤

310

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

hea

lth. 6.

5 ≥

pH ≤

8.5

(5th

and

95th

perc

entil

es)

Dis

solv

ed

oxyg

en

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

eco

syst

ems.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) At

razi

ne

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th pe

rcen

tile)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in B

ca

tego

ry (8

2-87

%).

B ca

tego

ry (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sc

ore

VEG

RAI

leve

l 3 s

houl

d be

with

in a

B

cate

gory

(82-

87%

). B

cate

gory

(82-

87%

)

Biot

a Fi

sh

FRAI

sco

re

FRAI

sho

uld

be w

ithin

a E

ca

tego

ry (2

2-37

%).

E ca

tego

ry (2

2-37

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

B

cate

gory

(82-

87%

). B

cate

gory

(82-

87%

) Ta

ble

10: R

esou

rce

Qua

lity

Obj

ectiv

es fo

r RIV

ERS

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

F11

Low

er B

reed

e Re

nost

erve

ld

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric


III

H70G

F11-R17

Breede River

niii4

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Bree

de R

iver

in

a c

ondi

tion

equa

l to

or

bette

r tha

n a

B/C

cat

egor

y.

Mon

ths



High 0

5.055 0 0 0 0

5.055 58.796 11.469 56.997 26.206

0

Low 42.827 28.026

9.569 7.407 8.604 3.827

10.237 13.818 31.627 44.934 64.391 55.658

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) N

utrie

nt le

vels

mus

t be

mai

ntai

ned

in th

e riv

er a

t a

mes

otro

phic

or b

ette

r co

nditi

on.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal c

ondu

ctiv

ity

(EC

)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

To

lera

ble

cate

gory

for

Irrig

atio

n w

ater

sup

ply.

≤ 27

0 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

pH ra

nge

pH, t

empe

ratu

re, a

nd

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)



28

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

varia

bles

D

isso

lved

oxy

gen

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

m

aint

enan

ce o

f eco

syst

em

heal

th.

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Wat

er te

mpe

ratu

re

No

mor

e th

atn2

°C c

hang

e in

nat

ural

m

onth

ly ra

nge

(min

imum

and

max

imum

)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

po

se a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) At

razi

ne

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

) En

dosu

lfan

≤ 0.

0013

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for

full

cont

act r

ecre

atio

n.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d be

with

in

B ca

tego

ry (8

2-87

%).

B ca

tego

ry (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 3 s

houl

d be

w

ithin

a C

cat

egor

y (6

2 -77

%).

C c

ateg

ory

(62-

77%

) M

argi

nal z

one

cove

r ab

unda

nce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s >

30%

Biot

a

Fish

FR

AI s

core

FR

AI s

houl

d be

with

in a

C

cate

gory

(62-

77%

). C

cat

egor

y (6

2-77

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

D

cate

gory

(42 -

57%

).

D c

ateg

ory

(42-

57%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

40,

ASP

T sc

ore

> 4.

3 N

umbe

r of f

amilie

s >

15 fa

milie

s at

abu

ndan

ces

A - C

Ta

ble

11: R

esou

rce

Qua

lity

Obj

ectiv

es fo

r RIV

ERS

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

E8 T

ouw

s

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

E8 Touws

III

J12L

E8-R18

Doring River

gviii1

C

/D Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Dor

ing

Riv

er a

n ec

olog

ical

con

ditio

n th

at is

eq

ual t

o or

bet

ter t

han

the

ecol

ogic

al c

ondi

tion

in s

umm

er

2014

(Cat

egor

y C

/D).

Mon

ths



High 0.031 0.031

0 0.031

0 0

0.079 0 0 0 0 0

Low 0.017 0.021 0.019 0.012 0.009 0.015 0.016 0.017 0.013

0.01 0.012 0.012

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)



29

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 15

00 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

C

/D.

C/D

cat

egor

y (5

7-62

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at ~

58%

for

the

ripar

ian

zone

.

C/D

cat

egor

y (5

7-62

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

10%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 15

%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

C/D

(5

8.3%

). C

/D c

ateg

ory

(57-

62%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

D

(40 -

59%

) Cat

egor

y

D c

ateg

ory

(42-

57%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

90,

ASP

T sc

ore

> 4.

5

Num

ber o

f fa

milie

s >

15 fa

milie

s at

abu

ndan

ces

A - C

E8 Touws

III

J12L

E8-R19

Touws River

gv5

B/C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Touw

s R

iver

an

ecol

ogic

al c

ondi

tion

that

is

equa

l to

or b

ette

r tha

n th

e ec

olog

ical

con

ditio

n in

sum

mer

20

14 (C

ateg

ory

C).

Mon

ths



High 0.183 0.354 0.274 0.246 0.407 0.204

1.37 0.446

0 0

0.433 0.175

Low 0.125 0.164 0.139 0.124 0.119 0.108 0.163 0.178 0.235 0.201 0.195 0.129

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 15

00 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

pH ra

nge

pH, t

empe

ratu

re, a

nd

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)



30

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

varia

bles

D

isso

lved

oxy

gen

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

. ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B

B

cate

gory

(82-

87%

)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at l

east

78

% %

for t

he ri

paria

n zo

ne.

B/C

cat

egor

y (7

7-82

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

5%

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

C/D

(59%

). C

/D c

ateg

ory

(57-

62%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

B/C

(7

8 - 8

2%) C

ateg

ory

B/C

cat

egor

y (7

7-82

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 4

5, A

SPT?

>4.0

Num

ber o

f fa

milie

s >

10 fa

milie

s, 5

with

SAS

S sc

ore

> 5,

ab

unda

nce

A-C

E8 Touws

III

J11H

E8-R20

Buffels River

gv4

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Buffe

ls R

iver

an

ecol

ogic

al c

ondi

tion

that

is

equa

l to

or b

ette

r tha

n th

e ec

olog

ical

con

ditio

n in

sum

mer

20

14 (C

ateg

ory

C).

Mon

ths



High 0.517 1.588 0.517 1.588

0 0 0 0 0 0 0 0

Low 0.068 0.075 0.078

0.07 0.057 0.083 0.097 0.113 0.111

0.11 0.105 0.073

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 32

0 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)



31

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

D

D

cat

egor

y (4

2-57

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at ~

57%

for

the

ripar

ian

zone

.

D c

ateg

ory

(42-

57%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 5

%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 30

%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B/C

(79%

). B/

C c

ateg

ory

(77-

82%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

C

Cat

egor

y

C c

ateg

ory

(62-

77%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

90,

ASP

T >

5.0

Num

ber o

f fa

milie

s >

15 fa

milie

s, 7

with

SAS

S sc

ore

> 6,

ab

unda

nces

A -

C

E8 Touws

III

J11J

E8-R21

Groot River

gv6

D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gro

ot R

iver

an

ecol

ogic

al c

ondi

tion

that

is

equa

l to

or b

ette

r tha

n th

e ec

olog

ical

con

ditio

n in

sum

mer

20

14 (C

ateg

ory

D).

Mon

ths



High 0.559 1.719 0.559 1.719

0 0 0 0 0 0 0 0

Low 0.016 0.018 0.019 0.016 0.015 0.022 0.024 0.027 0.029 0.027 0.027 0.018

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 32

0 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

eco

syst

ems.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5th p

erce

ntile

)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)



32

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

E8 Touws

III

J13C

E8-R22

Groot River

gii3

B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gro

ot R

iver

an

ecol

ogic

al c

ondi

tion

that

is

equa

l to

or b

ette

r tha

n th

e ec

olog

ical

con

ditio

n in

sum

mer

20

14 (C

ateg

ory

D).

Mon

ths



High 0.603 1.092 1.123 1.121 1.178 0.589 3.765 1.208

0 0

1.118 0.532

Low 0.583 0.746 0.752 0.732 0.637 0.593 0.852 0.803 0.903 0.791 0.808 0.587

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 62

0 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Tabl

e 12

: Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s D7

Gou

ritz-

Olif

ants

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

D7 Gouritz-Olifants

III

J25A

D7-R23

Gamka River

giv2

0 C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gam

ka R

iver

an

ecol

ogic

al c

ondi

tion

that

is e

qual

to

or b

ette

r tha

n th

e ec

olog

ical

co

nditi

on in

sum

mer

201

4 (C

ateg

ory

C).

Mon

ths



High 0.342

0.94 2.707

0.94 0.94

2.707 0.94

0 0 0 0

0.342

Low 0.192 0.232 0.262 0.232 0.241 0.487 0.382

0.22 0.16

0.162 0.157 0.167

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter c

ondi

tion.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C) Sa

lt co

ncen

tratio

ns n

eed

to b

e m

aint

aine

d at

pre

sent

day

leve

ls. ≤

90 m

illiSi

emen

s/m

etre

(95th

perc

entil

e)

Syst

em

varia

bles

pH

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th pe

rcen

tiles

)

Dis

solv

ed

oxyg

en

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)



33

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

C

C c

ateg

ory

(62-

77%

)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at l

east

61%

fo

r the

ripa

rian

zone

.

C c

ateg

ory

(62-

77%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver a

bund

ance

Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver a

bund

ance

Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 15

%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

C (7

1.6%

). C

cat

egor

y (6

2-77

%)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

B/C

(78

- 82%

) Cat

egor

y

B/C

cat

egor

y (7

7-82

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

00, A

SPT

> 5.

5

Num

ber o

f fa

milie

s >

15 fa

milie

s, 5

with

SAS

S sc

ore

> 5,

ab

unda

nce

A - C

D7 Gouritz-Olifants

III

J31C

D7-R24

Olifants River

giii2

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Olif

ants

Riv

er a

n ec

olog

ical

con

ditio

n th

at is

equ

al

to o

r bet

ter t

han

the

ecol

ogic

al

cond

ition

in s

umm

er 2

014

(Cat

egor

y C

/D).

Mon

ths



High 0.046

0.13 0.137 0.107 0.127 0.548 0.127 0.097

0 0

0.083 0.04

Low 0.035 0.055 0.057

0.05 0.079 0.109 0.068 0.053 0.036 0.037 0.046 0.035

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter c

ondi

tion.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C) Sa

lt co

ncen

tratio

ns n

eed

to b

e m

aint

aine

d at

pre

sent

day

leve

ls. ≤

680

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th pe

rcen

tiles

)

Dis

solv

ed

oxyg

en

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

C

/D

C/D

cat

egor

y (5

7-62

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at ~

70%

for

the

ripar

ian

zone

.

C c

ateg

ory

(62-

77%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies



34

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Upp

er z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s

Biot

a In

verte

brat

es

MIR

AI s

core

M

IRAI

sco

re s

houl

d eq

uate

to a

C

C

cat

egor

y (6

2-77

%)

D7 Gouritz-Olifants

III

J34C

D7-R25

Kammanassie River

gv36

C

/D Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Kam

man

assi

e R

iver

an

ecol

ogic

al c

ondi

tion

that

is e

qual

to o

r bet

ter t

han

the

ecol

ogic

al c

ondi

tion

in s

umm

er

2014

(Cat

egor

y C

/D).

Mon

ths



High 0.218 0.218

0 1.091 0.218

0 0 0 0

1.091 0 0

Low 0.435 0.431 0.327 0.252 0.179 0.182 0.182 0.215 0.239 0.311 0.381 0.353

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter c

ondi

tion.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C) Sa

lt co

ncen

tratio

ns n

eed

to b

e m

aint

aine

d in

a D

cla

ss fo

r aq

uatic

eco

syst

ems.

≤

85 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed

oxyg

en

≥ 6

milli

gram

s lit

re (5

th p

erce

ntile

)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at ~

58%

for

the

ripar

ian

zone

.

C/D

cat

egor

y (5

7-62

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r abu

ndan

ce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

5%

Upp

er z

one

cove

r abu

ndan

ce

Exot

ic s

peci

es <

10%

, ter

rest

rial w

oody

sp

ecie

s <

20%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

D (4

6.9%

). D

cat

egor

y (4

2-57

%)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

C/D

(5

8 -62

%) C

ateg

ory

C/D

cat

egor

y (5

7-62

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 9

0, A

SPT

> 4.

5

Num

ber o

f fa

milie

s >

17 fa

milie

s, 2

or m

ore

baet

ids,

ab

unda

nce

A - C



35

Tabl

e 13

: Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s F1

3 Lo

wer

Gou

ritz

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

F13 Lower Gouritz

II

J40B

F13-R26

Gouritz River

gi4

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gou

ritz

Riv

er a

n ec

olog

ical

con

ditio

n th

at is

eq

ual t

o or

bet

ter t

han

the

ecol

ogic

al c

ondi

tion

in s

umm

er

2014

(Cat

egor

y C

).

Mon

ths



High 4.818 2.398 4.818 2.398 2.398 9.926 9.926 9.926

0 0 0 0

Low 2.752 2.474 2.267 1.804 1.627 2.223 2.134 2.041 2.021 2.137 2.213 2.213

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter c

ondi

tion.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

at p

rese

nt d

ay

leve

ls.

≤ 60

0 m

illiSi

emen

s/m

etre

(95th

perc

entil

e)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th pe

rcen

tiles

)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B B

cat

egor

y (8

2-87

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at ~

57%

for

the

ripar

ian

zone

.

B/C

cat

egor

y (7

7-82

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

5%, t

erre

stria

l woo

dy

spec

ies

< 40

%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

D (5

0.1%

). D

cat

egor

y (4

2-57

%)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

C (6

0-79

%) C

ateg

ory

C c

ateg

ory

(62-

77%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

90,

ASP

T >

5.0

Num

ber o

f fa

milie

s >

19 fa

milie

s, 7

with

SAS

S sc

ore

> 7,

ab

unda

nce

A - C



36

Tabl

e 14

: Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s F1

2 Du

iwen

hoks

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

F12 Duiwenhoks

III

H80D

F12-R27

Duiwenhoks River

giii8

D

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Dui

wen

hoks

Riv

er

an e

colo

gica

l con

ditio

n th

at is

eq

ual t

o or

bet

ter t

han

the

ecol

ogic

al c

ondi

tion

in s

umm

er

2014

.

Mon

ths



High 0.418

0 0 0 0

0.418 0 0

0.418 0

2.649 0

Low 1.775 1.676 1.151 0.648 0.489 0.781 0.861 0.981 1.014 1.207 1.426 1.522

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter c

ondi

tion.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

Tol

erab

le

cate

gory

for i

rriga

tion.

≤

270

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th an

d 95

th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

D D

cat

egor

y (4

2-57

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at l

east

61%

fo

r the

ripa

rian

zone

.

C/D

cat

egor

y (5

7-62

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r abu

ndan

ce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

5%

Upp

er z

one

cove

r abu

ndan

ce

Exot

ic s

peci

es <

10%

, ter

rest

rial w

oody

sp

ecie

s <

20%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

D in

the

Dui

wen

hoks

Riv

er

D c

ateg

ory

(42-

57%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI (4

0 - 5

9%) s

hall

yiel

d a

D in

the

Dui

wen

hoks

Riv

er.

D c

ateg

ory

(42-

57%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

60,

ASP

T sc

ore

> 5

Num

ber o

f fa

milie

s >

10 fa

milie

s, a

bund

ance

A -

C, p

rese

nce

of E

mlid

ae, S

imul

idae

, Anc

ylid

ae



37

Tabl

e 15

: Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s I1

8 He

sseq

ua

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

I18 Hessequa

III

H90C

I18-R28

Goukou River

giii7

C

/D Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Dui

wen

hoks

R

iver

an

ecol

ogic

al c

ondi

tion

that

is e

qual

to o

r bet

ter t

han

the

ecol

ogic

al c

ondi

tion

in

sum

mer

201

4 (C

ateg

ory

C/D

).

Mon

ths



High 1.734 1.734

0 1.025 0.381

0 0 0 0 0 0

1.025

Low 0.794 0.764 0.171

0 0.139 0.688 0.688 0.653 0.598 0.567 0.691 0.654

Qua

lity

Nut

rient

s

Phos

phat

e (P

O4-P

) Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

an A

ccep

tabl

e ca

tego

ry fo

r eco

syst

em h

ealth

. ≤ 13

0 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Toxi

ns

Atra

zine

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

eco

syst

ems.

≤ 0.

079

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Endo

sulfa

n ≤

0.00

13 m

illigr

ams

per l

itre

(95th

perc

entil

e)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

D

D

cat

egor

y (4

2-57

%)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at l

east

71

% fo

r the

ripa

rian

zone

.

C c

ateg

ory

(62-

77%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 5

%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 10

%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

D (5

0.8%

). D

cat

egor

y (4

2-57

%)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

the

D

EC (4

0 - 5

9%) C

ateg

ory

D c

ateg

ory

(42-

57%

) In

verte

brat

e di

vers

ity

SASS

sco

re >

90,

ASP

T sc

ore

> 5.

8

Num

ber o

f fam

ilies

> 12

fam

ilies,

5 w

ith S

ASS

scor

e >

8,

abun

danc

e A

- C



38

Tabl

e 16

: Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s G

14 G

root

Bra

k

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G14 Groot Brak

III

K20A

G14-R29

Groot Brak River

gviii2

B/

C Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hi

gh fl

ows

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gro

ot B

rak

Riv

er

in a

n ec

olog

ical

con

ditio

n th

at

is e

qual

to o

r bet

ter t

han

Cat

egor

y B/

C.

Mon

ths



High 1.171 0.073 0.147

0 0.147 0.533

0 0 0 0 0 0

Low 0.112 0.299 0.287 0.199 0.141 0.134 0.257 0.068 0.087 0.112 0.134 0.151

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0.

025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.70

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

B c

lass

for

aqua

tic e

cosy

stem

hea

lth.

≤ 55

milli

Siem

ens/

met

re (9

5th pe

rcen

tile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd d

isso

lved

ox

ygen

are

impo

rtant

for t

he

mai

nten

ance

of e

cosy

stem

he

alth

.

6.5

≥ pH

≤ 8

.5 (5

th a

nd 9

5th pe

rcen

tiles

)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion

in th

e do

wns

tream

W

olw

edan

s D

am.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B B

cate

gory

(82-

87%

) Se

dim

ent p

artic

le

size

D

16 =

1m

m, D

50 =

32m

m, D

84 =

128

mm

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y B.

B ca

tego

ry (8

2-87

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%, t

erre

stria

l woo

dy

spec

ies

< 15

%

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

30%

, ter

rest

rial w

oody

sp

ecie

s >

40%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B (8

2-87

%).

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

A (9

2-10

0%).

A ca

tego

ry (9

2-10

0%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

70, A

SPT

> 7.

9



39

Tabl

e 17

: Res

ourc

e Q

ualit

y O

bjec

tives

for R

IVER

S in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s G

15 C

oast

al

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K30B

G15-R30

Malgas River

gvii9

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Mal

gas

in a

n ec

olog

ical

con

ditio

n th

at is

eq

ual t

o or

bet

ter t

han

Cat

egor

y C

.

Mon

ths



High 1.218 1.044 0.219 0.219 0.219 0.812

0 0 0 0 0 0

Low 0.296 0.081 0.042 0.042 0.077 0.085 0.123 0.211 0.204 0.169 0.211 0.204

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in B

cla

ss fo

r aq

uatic

eco

syst

ems.

≤

55 m

illiSi

emen

s/m

etre

(95th

per

cent

ile)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

5.0

≥ pH

≤ 7

.5 (5

th a

nd 9

5th pe

rcen

tiles

)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Toxi

ns

Amm

onia

To

xici

ty le

vels

mus

t not

pos

e a

thre

at to

aqu

atic

ec

osys

tem

s.

≤ 0.

073

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

At

razi

ne

≤ 0.

079

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

En

dosu

lfan

≤ 0.

0013

milli

gram

s pe

r litr

e (9

5thpe

rcen

tile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B/

C

B/C

cat

egor

y (7

7-82

%)

Sedi

men

t par

ticle

si

ze

D16

= 2

mm

, D50

= 4

mm

, D84

= 3

2mm

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y D

D c

ateg

ory

(42-

57%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 5

%, t

erre

stria

l woo

dy

spec

ies

< 15

%

Upp

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

30%

, ter

rest

rial w

oody

sp

ecie

s >

50%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

C/D

(57-

62%

). C

/D c

ateg

ory

(57-

62%

)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

A

A ca

tego

ry (9

2-10

0%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

60, A

SPT

> 8



40

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K30C

G15-R31

Kaaimans River

gvii1

1 B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Kaai

man

s R

iver

in

an

ecol

ogic

al c

ondi

tion

that

is

equ

al to

or b

ette

r tha

n C

ateg

ory

B.

Mon

ths



High 0.249 1.052 0.775

0 0

1.828 0.249

0 0 0 0 0

Low 0.592 0.538 0.445 0.371 0.335 0.445 0.538 0.483 0.359 0.371 0.371 0.359

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.70

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

ms.

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

4.5

≥ pH

≤ 7

.5 (5

th a

nd 9

5th pe

rcen

tiles

)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for f

ull c

onta

ct

recr

eatio

n.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B/

C

B/C

cat

egor

y (7

7-82

%)

Sedi

men

t par

ticle

si

ze

D16

= 2

mm

, D50

= 1

6 m

m, D

84 =

64

mm

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y A.

A ca

tego

ry (9

2-10

0%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

15%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 5

%, t

erre

stria

l woo

dy

spec

ies

< 5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B.

B c

ateg

ory

(82-

87%

)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

A

Cat

egor

y.

A ca

tego

ry (9

2-10

0%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

60, A

SPT

> 8



41

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K40A

G15-R32

Diep River

giii1

0 B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Upp

er D

iep

Riv

er in

an

ecol

ogic

al

cond

ition

that

is e

qual

to o

r be

tter t

han

Cat

egor

y B.

Mon

ths



High 0.412 0.107

0 0.021

0 0.412 0.107

0 0 0 0 0

Low 0.331 0.344 0.237

0.18 0.173 0.206 0.199 0.201 0.176 0.173 0.213 0.252

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

(50th

per

cent

ile)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

ms.

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

5 ≥

pH ≤

7 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B.

B ca

tego

ry (8

2-87

%)

Sedi

men

t par

ticle

si

ze

D16

= 1

0mm

, D50

= 1

00 m

m, D

84 =

300

m

m

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y A/

B.

A/B

cate

gory

(87-

92%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 2

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 5

%, t

erre

stria

l woo

dy

spec

ies

< 5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B.

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

B

Cat

egor

y (8

0 -90

%).

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

90, A

SPT

> 7



42

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K40C

G15-R33

Karatara River

gvii1

3 B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Kara

tara

Riv

er in

an

eco

logi

cal c

ondi

tion

that

is

equa

l to

or b

ette

r tha

n C

ateg

ory

A/B.

Mon

ths



High 0.471 0.283

0 0 0

0.283 0.029

0 0 0 0 0

Low 0.188 0.192 0.169 0.149 0.144 0.169

0.16 0.153 0.129

0.12 0.149

0.17

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

(50th

per

cent

ile)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

ms.

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

4.0

≥ pH

≤ 7

.0 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for f

ull c

onta

ct

recr

eatio

n.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

A.

A ca

tego

ry (9

2-10

0%)

Sedi

men

t par

ticle

si

ze

D16

= 3

0mm

, D50

= 8

0 m

m, D

84 =

200

m

m

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y A/

B.

A/B

cate

gory

(87-

92%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B.

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

A.

A ca

tego

ry (9

2-10

0%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

20, A

SPT

> 7



43

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K40E

G15-R34

Goukamma

gviii9

B/

C Q

uant

ity

Low

flow

s H

igh

flow

s

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gou

kam

ma

Riv

er in

an

ecol

ogic

al

cond

ition

that

is e

qual

to o

r be

tter t

han

Cat

egor

y B/

C.

Mon

ths



High 0.445 0.821 0.821 0.445 0.445 0.445 0.445

0 0 0 0 0

Low 0.645 1.124 0.825 0.642 0.552 0.764 0.947 0.401 0.387 0.431 0.554 0.536

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

m

esot

roph

ic o

r bet

ter

cond

ition

.

≤ 0.

075

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

1.75

milli

gram

s/lit

re (5

0th p

erce

ntile

)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r aq

uatic

eco

syst

ems.

≤ 55

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

4 ≥

pH ≤

7 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

6 m

illigr

ams

litre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

ca

tego

ry fo

r ful

l con

tact

re

crea

tion.

≤ 16

5 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B.

B ca

tego

ry (8

2-87

%)

Sedi

men

t par

ticle

si

ze

D16

= 2

mm

, D50

= 2

4 m

m, D

84 =

128

mm

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y B.

B ca

tego

ry (8

2-87

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

15%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 5

%, t

erre

stria

l woo

dy

spec

ies

< 5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

C.

C c

ateg

ory

(62-

77%

)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

A.

A ca

tego

ry (9

2-10

0%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

00, A

SPT

> 7.

4



44

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K50A

G15-R35

Knysna River

gvii1

4 B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Knys

na R

iver

in

an e

colo

gica

l con

ditio

n th

at is

eq

ual t

o or

bet

ter t

han

Cat

egor

y B.

Mon

ths



High 0.478 0.837

0 0

0.239 0.239 0.478

0 0 0 0 0

Low 0.686 0.664 0.546 0.437 0.411 0.441 0.441 0.476 0.447 0.474 0.579 0.644

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

(50th

per

cent

ile)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

m h

ealth

.

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

4.5

≥ pH

≤ 7

.0 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for f

ull c

onta

ct

recr

eatio

n.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

A/

B.

A/B

cate

gory

(87-

92%

) Se

dim

ent p

artic

le

size

D

16 =

30m

m, D

50 =

120

mm

, D84

= 3

00

mm

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y A/

B.

A/B

cate

gory

(87-

92%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 2

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 4

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B.

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

B

Cat

egor

y.

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

50, A

SPT

> 6.

7



45

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K50B

G15-R36

Gouna River

gviii1

1 A/

B

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Gou

na R

iver

in

an e

colo

gica

l con

ditio

n th

at is

eq

ual t

o or

bet

ter t

han

Cat

egor

y A/

B.

Mon

ths



High 0.342 1.197

0 0 0

0.684 0.342

0 0 0 0

0.067

Low 1.44

1.328 1.019 0.778 0.692

0.76 0.781 0.898 0.875 0.954 1.202 1.377

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

(50th

per

cent

ile)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

m h

ealth

.

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

4.0

≥ pH

≤ 7

.0 (5

th a

nd 9

5th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for f

ull c

onta

ct

recr

eatio

n.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

A/

B.

A/B

cate

gory

(87-

92%

) Se

dim

ent p

artic

le

size

D

16 =

10m

m, D

50 =

50

mm

, D84

= 2

00

mm

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f Cat

egor

y A/

B.

A/B

cate

gory

(87-

92%

) M

argi

nal z

one

cove

r abu

ndan

ce

No

exot

ic s

peci

es, n

o te

rrest

rial w

oody

sp

ecie

s Lo

wer

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 1

0%, t

erre

stria

l woo

dy

spec

ies

< 5%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B.

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ates

M

IRAI

sco

re

MIR

AI s

core

to b

e w

ithin

B

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

20, A

SPT

> 7.

5



46

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K60C

G15-R37

Keurbooms River

giv6

C

Qua

ntity

Lo

w fl

ows

Hig

h flo

ws

Mai

nten

ance

low

flo

ws

Mai

nten

ance

hig

h flo

ws

Flow

s sh

all b

e su

ffici

ent t

o m

aint

ain

the

Keur

boom

s R

iver

an

ecol

ogic

al c

ondi

tion

that

is e

qual

to o

r bet

ter t

han

the

ecol

ogic

al c

ondi

tion

in

sum

mer

201

4 (C

ateg

ory

B).

Mon

ths



High 0.758

0 0.758

0 0 0 0

0.758 0 0

0.758 3.389

Low 1.697 1.448 1.157 0.788 0.508 0.627 0.669 0.833 0.875 1.123 1.395 1.448

Qua

lity

Nut

rient

s

Phos

phat

e

(PO

4-P)

Nut

rient

leve

ls m

ust b

e m

aint

aine

d in

the

river

at a

n ol

igot

roph

ic c

ondi

tion.

≤ 0

.025

milli

gram

s pe

r litr

e (5

0th p

erce

ntile

)

Tota

l ino

rgan

ic

nitro

gen

(TIN

) ≤

0.7

0 m

illigr

ams

per l

itre

(50th

per

cent

ile)

Salts

El

ectri

cal

cond

uctiv

ity (E

C)

Salt

conc

entra

tions

nee

d to

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for a

quat

ic

ecos

yste

m h

ealth

.

≤ 30

milli

Siem

ens/

met

re (9

5th p

erce

ntile

)

Syst

em

varia

bles

pH ra

nge

pH, t

empe

ratu

re, a

nd

diss

olve

d ox

ygen

are

im

porta

nt fo

r the

mai

nten

ance

of

eco

syst

em h

ealth

.

5.5

≥ pH

≤ 8

.0 (5

th an

d 95

th p

erce

ntile

s)

Dis

solv

ed o

xyge

n ≥

8 m

illigr

ams

per l

itre

(5th

per

cent

ile)

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Id

eal

cate

gory

for f

ull c

onta

ct

recr

eatio

n.

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Geo

mor

phol

ogy

GAI

sco

re

GAI

sco

re s

houl

d eq

uate

to a

B.

B

cate

gory

(82-

87%

)

Rip

aria

n ve

geta

tion

VEG

RAI

sco

re

VEG

RAI

leve

l 4 o

f at ~

58%

fo

r the

ripa

rian

zone

.

B/C

cat

egor

y (7

7-82

%)

Mar

gina

l zon

e co

ver a

bund

ance

N

o ex

otic

spe

cies

, no

terre

stria

l woo

dy

spec

ies

Low

er z

one

cove

r ab

unda

nce

Exot

ic s

peci

es <

5%

, ter

rest

rial w

oody

sp

ecie

s <

15%

U

pper

zon

e co

ver

abun

danc

e Ex

otic

spe

cies

< 3

0%, t

erre

stria

l woo

dy

spec

ies

< 20

%

Biot

a

Fish

FR

AI s

core

FR

AI s

hall

yiel

d a

B B

cate

gory

(82-

87%

)

Inve

rtebr

ates

MIR

AI s

core

MIR

AI s

core

to b

e w

ithin

B

B ca

tego

ry (8

2-87

%)

Inve

rtebr

ate

dive

rsity

SA

SS s

core

> 1

80, A

SPT

> 6.

5

Num

ber o

f fa

milie

s >

15 fa

milie

s, 2

with

SAS

S sc

ores

> 1

2,

abun

danc

e A

- C



47

Tabl

e 18

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

B5 O

verb

erg

Wes

t

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

B5 Overberg West

II

G40D

B5-E01

Palmiet Estuary

pxi1

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh, m

acro

phyt

es,

mic

roal

gae

and

wat

er

qual

ity.

Mon

ths


Annual

MM

R/M

AR

(% N

at)

76.6 49.2 39.1 48.2 43.6 43.0 41.1 46.4 57.3 74.4 86.6 90.5 70.1

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

: Ave

rage

DIN

con

cent

ratio

n >1

00 µ

g/l

(dry

sea

son)

or >

500

µg/l

(wet

sea

son)

Es

tuar

y: A

vera

ge D

IN c

once

ntra

tions

in fr

eshw

ater

se

ctio

n >1

00 µ

g/l (

dry

seas

on) (

mar

ine

wat

ers

may

ha

ve h

ighe

r con

cent

ratio

ns li

nked

to u

pwel

ling)

an

d >5

00 µ

g/l (

wet

sea

son)

DIP

Riv

er in

flow

: Ave

rage

DIP

con

cent

ratio

n >1

0 µg

/l (d

ry s

easo

n) a

nd >

50 µ

g/l (

wet

sea

son)

Es

tuar

y: A

vera

ge D

IP c

once

ntra

tions

>10

µg/

l (dr

y se

ason

) (m

arin

e w

ater

s m

ay h

ave

high

er

conc

entra

tions

link

ed to

upw

ellin

g) a

nd >

50 µ

g/l

(wet

sea

son)

.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Salin

ity m

ust n

ot d

rop

belo

w 1

0 fo

r lon

ger t

han

thre

e m

onth

s in

a y

ear

Syst

em

varia

bles

Tem

pera

ture

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

Riv

er in

flow

: Sum

mer

tem

pera

ture

<20

°C

pH

<8

Dis

solv

ed

oxyg

en

>4 m

g/

Secc

hi d

epth

>2

m

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

wat

er

qual

ity a

nd h

abita

t rem

ains

su

itabl

e fo

r bio

ta ty

pica

lly

foun

d in

the

estu

ary

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line



48

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w p

hyto

plan

kton

bio

mas

s; m

aint

ain

mic

roal

gal g

roup

div

ersi

ty a

s m

easu

red

for t

he

base

line

surv

ey; p

hyto

plan

kton

bio

mas

s sh

ould

not

in

crea

se b

y m

ore

than

20%

abo

ve b

asel

ine

conc

entra

tions

; phy

topl

ankt

on g

roup

div

ersi

ty

shou

ld n

ot c

hang

e by

mor

e 20

% fr

om b

asel

ine

cond

ition

s

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Area

cov

ered

by

diffe

rent

pla

nt c

omm

unity

type

s sh

ould

not

cha

nge

by m

ore

than

20%

from

ba

selin

e op

en a

nd c

lose

d m

outh

con

ditio

ns, n

o in

vasi

ve s

peci

es s

houl

d be

pre

sent

, pre

vent

ex

cess

ive

filam

ento

us m

acro

alga

l gro

wth

, are

a co

vere

d sh

ould

be

less

than

50

% o

f the

ope

n w

ater

sur

face

are

a, m

acro

alga

e co

ver s

houl

d no

t ex

ceed

50%

in 1

m2 q

uadr

ats

or o

ccup

y m

ore

than

50

% o

f the

ope

n w

ater

sur

face

are

a in

the

east

ern

chan

nel a

nd a

bove

san

d ba

nk in

the

low

er re

ache

s of

the

estu

ary,

mac

roal

gal w

et b

iom

ass

shou

ld

rem

ain

belo

w 5

00 g

m-2

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Den

sity

of s

andp

raw

n bu

rrow

ope

ning

s sh

ould

ex

ceed

75

per m

2 in th

e hi

ghes

t den

sity

are

as in

th

e lo

wer

est

uary

; am

phip

ods

shou

ld n

umer

ical

ly

dom

inat

e th

e be

nthi

c fa

una

( Gra

ndid

iere

lla s

p.an

d C

orop

hium

tria

enon

yx) l

ivin

g on

the

sedi

men

t su

rface

in th

e m

iddl

e an

d up

per e

stua

rine

reac

hes

resp

ectiv

ely;

in th

e zo

opla

nkto

n, th

e de

nsity

of

Pseu

dodi

apto

mus

hes

sei s

houl

d ra

nge

betw

een

100

and

5000

m3 in

the

sum

mer

in th

e m

id-e

stua

ry

regi

on

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Ret

ain

the

follo

win

g fis

h as

sem

blag

es in

the

estu

ary

(bas

ed o

n ab

unda

nce)

: est

uarin

e sp

ecie

s (1

0-20

%);

estu

arin

e as

soci

ated

mar

ine

spec

ies

(80-

90%

); an

d in

dige

nous

fres

hwat

er s

peci

es

(~1%

); al

l num

eric

ally

dom

inan

t spe

cies

sho

uld

be

repr

esen

ted

by 0

+ ju

veni

les.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Ret

ain

regu

lar r

epre

sent

atio

n of

wad

ers,

gul

ls, a

nd

tern

s, a

nd o

vera

ll w

ater

bird

spe

cies

rich

ness

of

seve

n or

mor

e sp

ecie

s; e

stua

ry s

houl

d no

t be

regu

larly

use

d by

wat

erfo

wl s

peci

es s

uch

as

Red

knob

bed

Coo

t; w

ader

s or

tern

s sh

ould

not

be

abse

nt fr

om th

e es

tuar

y fo

r >5

cons

ecut

ive

coun

ts



49

Tabl

e 19

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

H16

Ove

rber

g W

est C

oast

al

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

H16 Overberg West Coastal

II

G40B

H16-E02

Buffels Estuary

bxi1

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n at

leas

t pre

sent

-da

y ba

se fl

ows

Mon

ths


Annual

MM

R/M

AR

(% N

at)

84.4 69.5 28.7 11.2

8.9 13.4 35.3 64.3 87.8 91.2 91.7 89.8 81.9

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

<100

µg/ℓ

DIP

<1

0 µg

/ℓ

Syst

em

varia

bles

D

isso

lved

ox

ygen

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>6 m

g/l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

<20

µg l-

1

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Area

occ

upie

d by

diff

eren

t mac

roph

yte

grou

ps

shou

ld n

o ch

ange

by

>20

% c

hang

e in

the

area

co

vere

d by

hab

itats

, sub

mer

ged

mac

roph

ytes

suc

h as

pon

dwee

d (P

otam

oget

on p

ectin

atus

) sho

uld

be

pres

ent d

urin

g lo

w fl

ow c

ondi

tions



50

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Estu

ary

shou

ld h

ave

viab

le p

opul

atio

ns o

f C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

Upo

gebi

a af

rican

a in

mud

dy z

ones

.

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd

1 in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V).

Estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, bu

t the

pro

porti

on o

f est

uary

dep

ende

nt m

arin

e sp

ecie

s (b

ased

on

abun

danc

e) s

houl

d no

t fal

l be

low

2%

.


II

G40B

H16-E03

Rooiels Estuary

bxi2

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n at

leas

t pre

sent

-da

y ba

se fl

ows

Mon

ths


Annual

MM

R/M

AR

(% N

at)

99.0 98.9 98.4 98.0 98.3 98.0 98.1 98.3 98.5 98.6 98.6 98.8 98.6

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

<100

µg/ℓ

DIP

<1

0 µg

/ℓ

Syst

em

varia

bles

D

isso

lved

ox

ygen

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>6 m

g/l

Path

ogen

s Es

cher

ichi

a co

li

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤ 13

0 co

unts

/100

ml (

95th

per

cent

ile)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line



51

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

<20

µg l-1

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Area

occ

upie

d by

diff

eren

t mac

roph

yte

grou

ps

shou

ld n

o ch

ange

by

>20

% c

hang

e in

the

area

co

vere

d by

hab

itats

, sub

mer

ged

mac

roph

ytes

suc

h as

pon

dwee

d (P

otam

oget

on p

ectin

atus

) sho

uld

be

pres

ent d

urin

g lo

w fl

ow c

ondi

tions

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Estu

ary

shou

ld h

ave

viab

le p

opul

atio

ns o

f C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

Upo

gebi

a af

rican

a in

mud

dy z

ones

.

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd

1 in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V).

Estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, bu

t the

pro

porti

on o

f est

uary

dep

ende

nt m

arin

e sp

ecie

s (b

ased

on

abun

danc

e) s

houl

d no

t fal

l be

low

2%

.


II

G40G

H16-E04

Bot Estuary

nxi6

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh, m

acro

phyt

es,

mic

roal

gae

and

wat

er

qual

ity

Mon

ths


Annual

MM

R/M

AR

(% N

at)

80.2 75.7 63.9 58.2 60.3 63.7 75.5 80.9 83.8 85.8 87.7 85.0 81.8

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

(low

flow

s): D

IN <

100

µg/l;

Riv

er in

flow

hi

gh fl

ows)

: DIN

<30

0 µg

/l; E

stua

ry (l

ow fl

ows)

: D

IN <

100

µg/l

(exc

ept d

urin

g up

wel

ling

even

ts);

Estu

ary

(hig

h flo

ws)

: DIN

<30

0 µg

/l in

Zon

es A

& B

(u

pper

reac

hes)

and

<10

0 µg

/l in

Zon

es C

& D

(lo

wer

reac

hes)

(exc

ept d

urin

g up

wel

ling

even

ts)

DIP

Riv

er in

flow

(low

flow

s): D

RP

<50

µg/l;

Riv

er in

flow

hi

gh fl

ows)

: DR

P <8

0 µg

/l; E

stua

ry (l

ow fl

ows)

: D

RP

<50

µg/l

(exc

ept d

urin

g up

wel

ling

even

ts);

Estu

ary

(hig

h flo

ws)

: DR

P <8

0 µg

/l in

Zon

es A

& B

(u

pper

reac

hes)

and

<50

µg/

l in

Zone

s C

& D

(lo

wer

reac

hes)

(exc

ept d

urin

g up

wel

ling

even

ts)



52

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Sum

mer

: 8<S

alin

ity<4

0

Syst

em

varia

bles

pH

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

6 <

pH <

8.5

D

isso

lved

ox

ygen

>4

mg/

l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w p

hyto

plan

kton

bio

mas

s (<

6 u

g l-1

); ph

ytop

lank

ton

biom

ass

shou

ld n

ot ri

se a

bove

10

ug l-1

for g

reat

er th

an 6

mon

ths;

mai

ntai

n m

icro

alga

l gro

up d

iver

sity

as

mea

sure

d fo

r the

ba

selin

e su

rvey

(an

incr

ease

in C

yano

phyt

es (b

lue

gree

ns) w

ould

be

a ca

use

for c

once

rn);

phyt

opla

nkto

n gr

oup

dive

rsity

sho

uld

not d

ecre

ase

belo

w 2

0% o

f tha

t fou

nd fo

r bas

elin

e co

nditi

ons;

m

aint

ain

pres

ent b

enth

ic m

icro

alga

l bio

mas

s (<

4

ug g

-1);

bent

hic

mic

roal

gal

biom

ass

shou

ld n

ot ri

se

abov

e 10

ug

g-1 fo

r gre

ater

than

6 m

onth

s

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e pr

esen

t are

a (2

011)

cov

ered

by

the

mac

roph

yte

habi

tats

: sub

mer

ged

mac

roph

ytes

(4

76 h

a); r

eeds

and

sed

ges

(60

ha);

salt

mar

sh (6

9 ha

); an

d m

acro

alga

e (2

38 h

a); p

reve

nt e

xces

sive

fil

amen

tous

mac

roal

gal g

row

th; t

he p

rese

nt ra

tio o

f m

acro

alga

e to

sub

mer

ged

mac

roph

ytes

mus

t be

mai

ntai

ned

(i.e.

50%

).



53

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Zoop

lank

ton:

Den

sity

of P

seud

odia

ptom

us h

esse

i sh

ould

rang

e be

twee

n 10

0 an

d 50

00 m

3 in th

e su

mm

er in

the

mid

-est

uary

regi

on; B

enth

ic

mac

rofa

una:

den

sity

of s

andp

raw

n C

allia

nass

a kr

auss

i bur

row

ope

ning

s sh

ould

exc

eed

75 p

er m

2 in

the

high

est d

ensi

ty a

reas

in th

e lo

wer

est

uary

, bu

rrow

den

sity

in th

e lo

wer

est

uary

sho

uld

not d

rop

belo

w 5

0 co

unts

per

m2

in th

e hi

ghes

t den

sity

ar

eas,

all

size

cla

sses

of s

and

praw

n sh

ould

be

pres

ent i

n th

e po

pula

tion

Fish

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pre

vent

co

loni

satio

n/in

crea

se o

f alie

n sp

ecie

s

Fish

com

mun

ity

com

posi

tion,

abu

ndan

ce

and

richn

ess

Juve

nile

est

uary

dep

enda

nt m

arin

e fis

h sh

ould

not

be

abs

ent f

rom

the

estu

ary

for m

ore

than

two

year

s in

a ro

w; %

con

tribu

tion

by ju

veni

le e

stua

ry

depe

ndan

t mar

ine

fish

to a

ssem

blag

e by

num

ber

shou

ld n

ot d

rop

to <

60%

of r

esid

ents

; Alie

n sp

ecie

s ab

unda

nce

shou

ld re

mai

n be

low

5 %

of

biom

ass

in m

ain

body

of e

stua

ry; %

con

tribu

tion

of

adul

t & s

ub-a

dult

estu

ary-

depe

nden

t fis

h to

as

sem

blag

e by

num

ber s

houl

d no

t dro

p be

low

15

%

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Num

ber o

f non

-pas

serin

e w

ater

bird

spe

cies

re

cord

ed in

cou

nts

shou

ld n

ot d

ecre

ase

by m

ore

than

10%

ove

r a fi

ve-y

ear p

erio

d; o

vera

ll nu

mbe

rs

of w

ader

s, w

adin

g bi

rds

or g

ulls

& te

rns,

or

num

bers

of a

ny o

f the

spe

cies

in th

ese

grou

ps

shou

ld n

ot d

ecre

ase

rela

tive

to th

e ba

selin

e av

erag

e by

mor

e th

an 1

0% o

ver a

five

-yea

r per

iod,

af

ter c

orre

ctin

g fo

r reg

iona

l/glo

bal p

opul

atio

n ch

ange

s; to

tal s

umm

er n

umbe

rs o

f wat

erfo

wl

shou

ld n

ot e

xcee

d 15

000

for m

ore

than

4 y

ears

.


II

G40H

H16-E05

Onrus Estuary

nxi8

D

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh, m

acro

phyt

es,

mic

roal

gae

and

wat

er

qual

ity

Mon

ths


Annual

MM

R/M

AR

(% N

at)

55.6 54.2 53.8 52.9 51.2 50.2 49.7 49.0 50.0 49.8 51.7 54.8 51.8

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25

µg/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

10 <

Sal

inity

<40



54

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

5 m

g/ℓ

Turb

idity

Tu

rbid

ity <

5 N

TU

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Con

trol n

utrie

nt in

put f

rom

sew

age

spills

to p

reve

nt

mic

roal

gal b

loom

s (>

20

µg l-1

) and

the

occu

rrenc

e of

har

mfu

l alg

al b

loom

spe

cies

; mai

ntai

n th

e di

strib

utio

n of

diff

eren

t phy

topl

ankt

on g

roup

s (d

iver

se c

omm

unity

com

posi

tion)

and

pre

vent

do

min

ance

of C

yano

phyt

es (b

lue-

gree

n al

gae)

that

oc

cur u

nder

nut

rient

rich

, fre

shw

ater

con

ditio

ns

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e pr

esen

t are

a (2

014)

cov

ered

by

the

mac

roph

yte

habi

tats

: op

en s

urfa

ce w

ater

are

a:

2.59

, san

d an

d m

udfla

ts: 1

.86,

reed

s an

d se

dges

: 6.

57, p

reve

nt fu

rther

spr

ead

of re

eds

by re

duci

ng

nutri

ent i

nput

and

occ

urre

nce

of a

quat

ic in

vasi

ve

such

as

wat

er fe

rn A

zolla

.; pr

even

t fur

ther

di

stur

banc

e an

d de

velo

pmen

t in

the

ripar

ian

zone

; re

mov

e al

ien

plan

ts fr

om th

e rip

aria

n zo

ne a

nd

cont

rol t

he s

prea

d of

gar

den

inva

sive



55

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

The

estu

ary

shou

ld h

ave

viab

le p

opul

atio

ns o

f C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

Upo

gebi

a af

rican

a in

mud

dy z

ones

. Br

eedi

ng in

bot

h sp

ecie

s ce

ases

at s

alin

ities

low

er th

an 1

7 pp

t dur

ing

prol

onge

d m

outh

pha

se.

In U

. afri

cana

and

exp

ort

of la

rvae

into

mar

ine

and

post

larv

ae b

ack

to

estu

ary

ceas

es; p

rolo

nged

mou

th c

losu

re s

houl

d be

avo

ided

as

this

will

resu

lt in

a lo

ss o

f mar

ine

spec

ies

(e.g

. Pse

udod

iapt

omus

sp.

) fro

m th

e zo

opla

nkto

n co

mm

unity

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

2 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y II)

, 1

indi

geno

us c

atad

rom

ous

spec

ies

(Cat

egor

y V)

and

tw

o fre

shw

ater

indi

geno

us s

peci

es (C

ateg

ory

IV).

Estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

(>

50%

), bu

t est

uary

dep

ende

nt m

arin

e sp

ecie

s,

indi

geno

us c

atad

rom

ous

and

fresh

wat

er s

peci

es

shou

ld b

e pr

esen

t Ta

ble

20: R

esou

rce

Qua

lity

Obj

ectiv

es fo

r EST

UARI

ES in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s H1

7 O

verb

erg

East

Fyn

bos

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic


II

G40L

H17-E06

Klein Estuary

nxi7

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Floo

d an

d br

each

ing

regi

mes

to m

aint

ain

the

sedi

men

t dis

tribu

tion

patte

rns

and

aqua

tic

habi

tat (

inst

ream

phy

sica

l ha

bita

t) so

as

not t

o ex

ceed

TPC

s fo

r bio

ta

Mon

ths


Annual

MM

R/M

AR

(% N

at)

84.2 83.1 85.5 73.7 69.4 78.8 78.0 83.9 82.3 86.9 89.7 90.3 85.6

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

5 <

Salin

ity <

40

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

Entir

e es

tuar

y an

d riv

er in

flow

: DO

>5m

g/ℓ,

turb

idity

<

5 N

TU

Turb

idity

Tu

rbid

ity <

5 N

TU

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



56

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt

to m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Phyt

opla

nkto

n bi

omas

s, m

easu

red

as w

ater

col

umn

chlo

roph

yll -a

sho

uld

not e

xcee

d 10

µg

l-1; m

aint

ain

high

sub

tidal

ben

thic

mic

roal

gae

biom

ass

durin

g th

e cl

osed

mou

th p

hase

and

hig

h in

terti

dal b

enth

ic

mic

roal

gae

biom

ass

durin

g th

e op

en p

hase

; ph

ytop

lank

ton

biom

ass

shou

ld n

ot e

xcee

d 10

µg

l-1;

bent

hic

mic

roal

gae

biom

ass

shou

ld n

ot d

evia

te m

ore

than

20

% c

ompa

red

with

Pre

sent

Sta

te

conc

entra

tions

; no

brac

kish

epi

pelic

dia

tom

s sh

ould

be

foun

d du

ring

the

clos

ed p

hase

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e pr

esen

t are

a (2

014)

cov

ered

by

the

mac

roph

yte

habi

tats

: ope

n su

rface

wat

er a

rea:

74

1.6

ha; s

and

and

mud

ban

ks: 7

9 ha

; sub

mer

ged

mac

roph

ytes

: 92

ha; s

alt m

arsh

: 170

ha;

reed

s an

d se

dges

: 127

ha;

floo

dpla

in: 2

80 h

a (m

ostly

inta

ct)

and

110

ha (d

istu

rbed

); m

aint

ain

the

dist

ribut

ion

of

plan

t com

mun

ity ty

pes

i.e. s

ubm

erge

d m

acro

phyt

e,

Rup

pia

cirrh

osa

beds

dur

ing

clos

ed m

outh

bra

ckis

h co

nditi

ons,

sal

t mar

sh, S

alic

orni

a m

eyer

iana

mar

sh

durin

g op

en m

outh

con

ditio

ns, P

hrag

mite

s au

stra

lis

stan

ds in

the

mid

dle

/ upp

er re

ache

s an

d sa

lt m

arsh

gr

asse

s in

dica

tive

of b

rack

ish

cond

ition

s



57

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Bent

hic

inve

rtebr

ates

: The

est

uary

sho

uld

have

vi

able

pop

ulat

ions

of C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

U. A

frica

na in

mud

dy z

ones

. Br

eedi

ng in

bo

th s

peci

es c

ease

s at

sal

initi

es lo

wer

than

17

ppt

durin

g pr

olon

ged

mou

th p

hase

. In

U. a

frica

na a

nd

expo

rt of

larv

ae in

to m

arin

e an

d po

stla

rvae

bac

k to

es

tuar

y ce

ases

; abu

ndan

ce o

f C. k

raus

si a

nd U

. af

rican

a sh

ould

not

dro

p be

low

50%

of r

ecor

ded

tota

l abu

ndan

ces

in e

ach

seas

on; r

ecru

its s

houl

d be

re

cord

ed in

pop

ulat

ion

(Iden

tify

zone

s w

here

thes

e ar

e ab

unda

nt fr

om th

e ba

selin

e st

udy

and

thes

e w

ould

be

whe

re th

e ab

ove

wou

ld b

e as

sess

ed);

Zoop

lank

ton:

Pro

long

ed c

lose

mou

th w

ould

resu

lt in

a

loss

of m

arin

e sp

ecie

s (e

.g. P

seud

odia

ptom

us s

p.)

from

the

zoop

lank

ton

com

mun

ity; a

bund

ance

of

indi

cato

r mar

ine

spec

ies

(e.g

. Pse

udod

iapt

omus

sp.

) sh

ould

not

cha

nge

by m

ore

than

50%

of c

urre

nt

leve

ls.

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Ret

ain

the

follo

win

g fis

h as

sem

blag

es in

the

estu

ary

(bas

ed o

n ab

unda

nce)

: est

uarin

e sp

ecie

s (2

0 -30

%),

estu

arin

e as

soci

ated

mar

ine

spec

ies

(60-

70%

) and

in

dige

nous

fres

hwat

er s

peci

es (<

1%).

All

num

eric

ally

dom

inan

t spe

cies

are

repr

esen

ted

by 0

+ ju

veni

les.

abu

ndan

ce o

f est

uary

ass

ocia

ted

mar

ine

spec

ies

shou

ld n

ot d

rop

belo

w 5

0% o

f tot

al

abun

danc

e; a

bund

ance

of e

stua

rine

spec

ies

shou

ld

not i

ncre

ase

abov

e 50

% o

f tot

al a

bund

ance

.; al

ien

fresh

wat

er s

peci

es s

houl

d no

t be

pres

ent i

n th

e es

tuar

y; 0

+ ju

veni

les

of a

ll of

the

dom

inan

t fis

h sp

ecie

s sh

ould

be

pres

ent

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

ary

shou

ld c

onta

in a

rich

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al g

roup

s, s

igni

fican

t num

bers

of m

igra

tory

w

ader

s an

d te

rns,

as

wel

l as

a he

alth

y br

eedi

n g

popu

latio

n of

resi

dent

wad

ers;

the

estu

ary

shou

ld

supp

ort t

hous

ands

of b

irds

in s

umm

er a

nd h

undr

eds

in w

inte

r; nu

mbe

rs o

f wat

erfo

wl s

houl

d no

t dro

p be

low

600

, wad

ers

belo

w 1

00 in

sum

mer

, and

tern

s be

low

250

; ove

rall

num

bers

of b

ird s

peci

es s

houl

d no

t dro

p be

low

100

0 fo

r 3 c

onse

cutiv

e co

unts



58

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic


II

G40M

H17-E07

Uilkraal Estuary

nxi5

C

/D Q

uant

ity

Flow

M

MR

/MAR

(%

Nat

)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh,

mac

roph

ytes

, mic

roal

gae

and

wat

er q

ualit

y

Mon

ths


Annual

MM

R/M

AR

(% N

at)

58.8 58.8 58.8 58.8 58.8 58.8 58.8 58.8 58.8 58.8 58.8 58.8 58.8

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

10 <

Sal

inity

<40

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

6 m

g/ℓ

Turb

idity

Tu

rbid

ity <

5 N

TU

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt

to m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a M

icro

alga

e

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Phyt

opla

nkto

n bi

omas

s, m

easu

red

as w

ater

col

umn

chlo

roph

yll-a

sho

uld

not e

xcee

d 10

ug

l-1; m

aint

ain

high

sub

tidal

ben

thic

mic

roal

gal b

iom

ass

durin

g th

e cl

osed

mou

th p

hase

and

hig

h in

terti

dal b

enth

ic

mic

roal

gal b

iom

ass

durin

g th

e op

en p

hase



59

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e di

strib

utio

n of

pla

nt c

omm

unity

type

s i.e

. sub

mer

ged

mac

roph

yte,

Rup

pia

cirrh

osa

beds

du

ring

clos

ed m

outh

bra

ckis

h co

nditi

ons,

sal

t mar

sh,

Salic

orni

a m

eyer

iana

mar

sh d

urin

g op

en m

outh

co

nditi

ons,

Phr

agm

ites

aust

ralis

sta

nds

in th

e m

iddl

e / u

pper

reac

hes

and

salt

mar

sh g

rass

es in

dica

tive

of

brac

kish

con

ditio

ns.

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

The

estu

ary

shou

ld h

ave

viab

le p

opul

atio

ns o

f C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

U. A

frica

na

in m

uddy

zon

es

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Ret

ain

the

follo

win

g fis

h as

sem

blag

es in

the

estu

ary

(bas

ed o

n ab

unda

nce)

: es

tuar

ine

spec

ies

(30-

40%

), es

tuar

ine

asso

ciat

ed m

arin

e sp

ecie

s (6

0-70

%) a

nd

indi

geno

us fr

eshw

ater

spe

cies

(<1%

). Al

l nu

mer

ical

ly d

omin

ant s

peci

es a

re re

pres

ente

d by

0+

juve

nile

s

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

ary

shou

ld c

onta

in a

rich

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al g

roup

s, s

igni

fican

t num

bers

of m

igra

tory

w

ader

s an

d te

rns,

as

wel

l as

a he

alth

y br

eedi

ng

popu

latio

n of

resi

dent

wad

ers;

the

estu

ary

shou

ld

supp

ort t

hous

ands

of b

irds

in s

umm

er a

nd h

undr

eds

in w

inte

r


II

G50A

H17-E08

Ratel Estuary

nxi3

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n at

leas

t pre

sent

-da

y ba

se fl

ows

Mon

ths


Annual

MM

R/M

AR

(% N

at)

90.0 90.0 90.1 90.3 90.2 90.2 90.0 90.0 90.0 90.0 90.0 90.0 90.0

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

10 <

Sal

inity

<40

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

6 m

g/ℓ

Turb

idity

Tu

rbid

ity <

5 N

TU

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



60

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt

to m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n th

e di

strib

utio

n of

diff

eren

t phy

topl

ankt

on

grou

ps a

nd lo

w b

iom

ass

(< 2

0 µg

l-1)

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e di

strib

utio

n of

cur

rent

mac

roph

yte

habi

tats

, <20

% c

hang

e in

the

area

cov

ered

by

diffe

rent

mac

roph

yte

habi

tats

(acc

ount

s fo

r nat

ural

ch

ange

s du

e to

the

dyna

mic

nat

ure

of e

stua

ries)

; su

bmer

ged

mac

roph

ytes

suc

h as

pon

dwee

d (P

otam

oget

on p

ectin

atus

) sho

uld

be p

rese

nt d

urin

g lo

w fl

ow c

ondi

tions

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

The

estu

ary

shou

ld h

ave

viab

le p

opul

atio

ns o

f C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

Upo

gebi

a af

rican

a in

mud

dy z

ones

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.



61

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic


II

G50F

H17-E09

Heuningnes Estuary

nxi1

A/

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Floo

d an

d br

each

ing

regi

mes

to m

aint

ain

the

sedi

men

t dis

tribu

tion

patte

rns

and

aqua

tic

habi

tat (

inst

ream

phy

sica

l ha

bita

t) so

as

not t

o ex

ceed

TPC

s fo

r bio

ta

Mon

ths


Annual

MM

R/M

AR

(% N

at)

79.6 77.5 73.1 71.5 72.5 76.2 79.1 79.2 79.0 78.4 78.7 78.2 78.2

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity in

the

estu

ary

is a

rtific

ially

ele

vate

d at

pre

sent

due

to re

duce

d fre

shw

ater

inflo

w, t

arge

t le

vels

for t

he v

ario

us z

ones

are

as

follo

ws:

Zon

e A:

30

, Zon

e B:

14,

Zon

e C

: 6, Z

one

D: 2

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

5 m

g/ℓ

pH

8< p

H <

9

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt

to m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a M

icro

alga

e

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Phyt

opla

nkto

n bi

omas

s, m

easu

red

as w

ater

col

umn

chlo

roph

yll-a

sho

uld

not e

xcee

d 10

µg

l-1 in

bot

h th

e es

tuar

y an

d So

eten

dals

vlei

(Zon

e D

); m

aint

ain

dive

rsity

of p

hyto

plan

kton

gro

ups

i.e. d

iato

ms

abun

dant

dur

ing

mar

ine

phas

e.



62

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Area

cov

ered

by

diffe

rent

mac

roph

yte

habi

tats

pa

rticu

larly

inte

rtida

l and

sup

ratid

al s

alt m

arsh

sh

ould

be

allo

wed

to re

vert

to a

mor

e na

t ura

l sta

te

thro

ugh

rest

orat

ion

of a

mor

e na

tura

l flo

w re

gim

e (p

artic

ular

ly s

umm

er b

ase

flow

s) a

nd b

y al

low

ing

mou

th o

pera

te n

orm

ally

as

far a

s po

ssib

le (m

inim

um

heig

ht fo

r arti

ficia

l bre

achi

ng to

be

incr

ease

d to

2.5

m

) bre

achi

ng w

hich

will

incr

ease

bac

kflo

odin

g an

d so

il sa

linity

; pre

sent

are

a (2

014)

cov

ered

by

the

mac

roph

yte

habi

tats

is a

s fo

llow

s: O

pen

surfa

ce

wat

er a

rea

:907

.92,

San

d an

d m

udfla

ts :4

3.35

, Su

bmer

ged

mac

roph

ytes

:10.

17, R

eeds

and

se

dges

:115

4.98

, Int

ertid

al s

alt m

arsh

:16.

18 ,

Supr

atid

al s

alt m

arsh

:942

.4

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Bent

hic

inve

rtebr

ates

: Abu

ndan

ce o

f C. k

raus

si a

nd

U. A

frica

na s

houl

d no

t dro

p be

low

50%

of r

ecor

ded

tota

l abu

ndan

ces

in e

ach

seas

on, r

ecru

its s

houl

d be

re

cord

ed in

pop

ulat

ion

(Iden

tify

zone

s w

here

thes

e ar

e ab

unda

nt fr

om th

e ba

selin

e st

udy

and

thes

e w

ould

be

whe

re th

e ab

ove

wou

ld b

e as

sess

ed;

Zoop

lank

ton:

Pro

long

ed c

lose

mou

th w

ould

resu

lt in

a

loss

of m

arin

e sp

ecie

s (e

.g. P

seud

odia

ptom

us s

p.)

from

the

zoop

lank

ton

com

mun

ity, a

bund

ance

of

indi

cato

r mar

ine

spec

ies

(e.g

. Pse

udod

iapt

omus

sp.

) sh

ould

not

cha

nge

by m

ore

than

50%

of c

urre

nt

leve

ls

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Ret

ain

the

follo

win

g fis

h as

sem

blag

es in

the

estu

ary

(bas

ed o

n ab

unda

nce)

: est

uarin

e sp

e cie

s (2

0-30

%),

estu

arin

e as

soci

ated

mar

ine

spec

ies

(60-

70%

) and

in

dige

nous

fres

hwat

er s

peci

es (<

1%);

all n

umer

ical

ly

dom

inan

t spe

cies

are

repr

esen

ted

by 0

+ ju

veni

les;

ab

unda

nce

of e

stua

ry a

ssoc

iate

d m

arin

e sp

ecie

s sh

ould

not

dro

p be

low

50%

of t

otal

abu

ndan

ce;

abun

danc

e of

est

uarin

e sp

ecie

s sh

ould

not

incr

ease

ab

ove

50%

of t

otal

abu

ndan

ce; a

lien

fresh

wat

er

spec

ies

shou

ld n

ot b

e pr

esen

t in

the

estu

ary;

0+

juve

nile

s of

all

of th

e do

min

ant f

ish

spec

ies

shou

ld

be p

rese

nt



63

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

ary

shou

ld c

onta

in a

rich

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al g

roup

s, s

igni

fican

t num

bers

of m

igra

tory

w

ader

s an

d te

rns,

as

wel

l as

a he

alth

y br

eedi

ng

popu

latio

n of

resi

dent

wad

ers.

The

est

uary

sho

uld

supp

ort t

hous

ands

of b

irds

in s

umm

er a

nd h

undr

eds

in w

inte

r; nu

mbe

rs o

f wat

erfo

wl s

houl

d no

t dro

p be

low

600

, wad

ers

belo

w 1

00 in

sum

mer

, and

tern

s be

low

250

; ove

rall

num

bers

of b

ird s

peci

es s

houl

d no

t dro

p be

low

100

0 fo

r 3 c

onse

cutiv

e co

unts


II

G50K

H17-E10

Klipdrifsfontein Estuary

bxi3

A

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n at

leas

t pre

sent

-da

y ba

se fl

ows

Mon

ths


Annual

MM

R/M

AR

(% N

at)

62.5 68.0 63.3 58.4 58.3 65.7 68.6 64.4 60.2 61.2 66.8 64.3 64.8

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

10 <

Sal

inity

<40

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

6 m

g/ℓ

Turb

idity

Tu

rbid

ity <

5 N

TU

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

seli n

e

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt

to m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line



64

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n th

e di

strib

utio

n of

diff

eren

t phy

topl

ankt

on

grou

ps a

nd lo

w b

iom

ass

(< 2

0 µg

l-1)

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e di

strib

utio

n of

cur

rent

mac

roph

yte

habi

tats

, <20

% c

hang

e in

the

area

cov

ered

by

diffe

rent

mac

roph

yte

habi

tats

(acc

ount

s fo

r nat

ural

ch

ange

s du

e to

the

dyna

mic

nat

ure

of e

stua

ries)

; su

bmer

ged

mac

roph

ytes

suc

h as

pon

dwee

d (P

otam

oget

on p

ectin

atus

) sho

uld

be p

rese

nt d

urin

g lo

w fl

ow c

ondi

tions

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

The

estu

ary

shou

ld h

ave

viab

le p

opul

atio

ns o

f C

allia

nass

a kr

auss

i in

sand

y zo

nes

and

Upo

gebi

a af

rican

a in

mud

dy z

ones

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

. Ta

ble

21: R

esou

rce

Qua

lity

Obj

ectiv

es fo

r EST

UARI

ES in

prio

rity

Reso

urce

Uni

ts in

the

Inte

grat

ed U

nit o

f Ana

lysi

s F1

1 Lo

wer

Bre

ede

Reno

ster

veld

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

R U Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric


II

H70K

F11-E11

Breede Estuary

nxi2

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

per

re

com

men

ded

ecol

ogic

al

flow

Mon

ths


Annual

MM

R/M

AR

(% N

at)

57.6 50.1 34.0 33.0 34.6 41.7 59.7 56.6 61.2 47.6 51.3 27.3 47.2

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<30

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

25 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Zone

A (0

-15

km u

pstre

am o

f mou

th):

40>

Salin

ity

>20,

Zon

e B

(15 -

30 k

m):

30>

Salin

ity >

10, Z

one

C

(30-

40 k

m):

20>

Salin

ity >

5, Z

one

D (4

0-50

km

): <1

0



65

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

R U Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Syst

em

varia

bles

D

isso

lved

ox

ygen

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

Entir

e es

tuar

y an

d riv

er in

flow

: DO

>5

mg/

ℓ

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e to

mai

ntai

n na

tura

l bat

hym

etry

and

the

sedi

men

t cha

ract

eris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Med

ian

phyt

opla

nkto

n ch

loro

phyl

l a (m

inim

um 5

si

tes)

not

to e

xcee

d 3.

5 μg

/ℓ; p

reve

nt fo

rmat

ion

of

loca

lised

phy

topl

ankt

on b

loom

s; m

aint

ain

a hi

gh

med

ian

inte

rtida

l ben

thic

mic

roal

gal b

iom

ass;

m

edia

n in

terti

dal b

enth

ic c

hlor

ophy

ll a

(min

imum

5

site

s) n

ot to

exc

eed

42 m

g/m

2; site

spe

cific

ch

loro

phyl

l a c

once

ntra

tion

not t

o ex

ceed

20

μg/ℓ

and

cell

dens

ity n

ot to

exc

eed

10 0

00 c

ells

/ℓ.

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e pr

esen

t are

a (2

014)

cov

ered

by

the

mac

roph

yte

habi

tats

: int

ertid

al s

alt m

arsh

: 20.

5 ha

, su

prat

idal

sal

t mar

sh: 2

9.55

ha,

sub

mer

ged

mac

roph

ytes

: 6 h

a, re

eds

& se

dges

: 4.8

ha,

sa

nd/m

ud b

anks

: 136

ha;

mai

ntai

n th

e in

tegr

ity o

f th

e re

mai

ning

sup

ratid

al s

alt m

arsh

; mai

ntai

n th

e re

ed a

nd s

edge

sta

nds

in th

e up

per r

each

es o

f the

es

tuar

y; re

habi

litat

e 20

% o

f the

floo

dpla

in h

abita

t by

rem

ovin

g an

y ag

ricul

tura

l ber

ms

and

inva

sive

pla

nts;

m

aint

ain

the

inte

grity

of t

he ri

paria

n zo

ne.;

inva

sive

pl

ants

(e.g

. Euc

alyp

tus,

pric

kly

pear

, Tam

arix

) cov

er

not t

o ex

ceed

5%

of t

otal

floo

dpla

in a

rea



66

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

R U Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n ric

h po

pula

tions

of t

he m

udpr

awn

Upo

gebi

a af

rican

a on

mud

bank

s in

the

mid

dle

estu

ary

(Zon

e B)

; mai

ntai

n ric

h in

verte

brat

e co

mm

uniti

es

asso

ciat

ed w

ith th

e R

EI z

one

in th

e up

per e

stua

ry

(zoo

plan

kton

and

ben

thos

); m

udpr

awn

dens

ity

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ine

leve

ls b

y m

ore

than

25%

in e

ach

seas

on; d

omin

ant s

peci

es in

th

e zo

ne (z

oopl

ankt

on a

nd b

enth

os) s

houl

d no

t de

viat

e fro

m a

vera

ge b

asel

ine

leve

ls b

y m

ore

than

40

% in

eac

h se

ason

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0 -20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; Cat

egor

y IIa

ob

ligat

e de

pend

ents

sho

uld

be w

ell r

epre

sent

ed b

y la

rge

expl

oite

d sp

ecie

s

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

ary

shou

ld c

onta

in a

div

erse

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al ta

xono

mic

gro

ups

(see

201

5 EW

R re

port)

.; te

rn ro

osts

sho

uld

be s

een

at th

e es

tuar

y on

a

regu

lar b

asis

; apa

rt fro

m g

ulls

, ter

ns a

nd re

gio n

ally

in

crea

sing

spe

cies

suc

h as

Egy

ptia

n G

oose

, the

es

tuar

y sh

ould

gen

eral

ly s

uppo

rt m

ore

than

200

bi

rds;

num

bers

of b

irds

othe

r tha

n gu

lls, t

erns

and

re

gion

ally

incr

easi

ng s

peci

es s

houl

d no

t fal

l bel

ow

120

for t

hree

con

secu

tive

coun

ts; n

umbe

rs o

f w

ater

bird

spe

cies

dro

p sh

ould

not

bel

ow 1

5 fo

r 3

cons

ecut

ive

coun

ts



67

Tabl

e 22

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

F13

Low

er G

ourit

z

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

F13 Lower Gouritz

II

J40E

F13-E12

Gouritz Estuary

gxi1

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

per

re

com

men

ded

ecol

ogic

al

flow

Mon

ths


Annual

MM

R/M

AR

(% N

at)

53.2 59.8 53.5 46.4 53.3 59.7 61.8 66.7 62.2 62.8 74.1 57.8 59.7

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

: NO

x-N

not

to e

xcee

d 10

0 μg

/ℓ ov

er 2

co

nsec

utiv

e m

onth

s, N

H3-N

not

to e

xcee

d 20

μg/

ℓ ov

er 2

con

secu

tive

mon

ths;

Est

uary

(exc

ept d

urin

g up

wel

ling

or fl

oods

): av

erag

e N

Ox-

N n

ot to

exc

eed

100

μg/ℓ,

no

sing

le m

easu

rem

ent t

o ex

ceed

150

μg

/ℓ, a

vera

ge N

H3-N

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 1

00 μ

g/ℓ

DIP

Riv

er in

flow

: PO

4-P n

ot to

exc

eed

20 μ

g/ℓ o

ver 2

co

nsec

utiv

e m

onth

s; E

stua

ry (e

xcep

t dur

ing

upw

ellin

g or

floo

ds):

aver

age

PO4-P

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 5

0 μg

/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Salin

ity s

houl

d no

t exc

eed

0 at

hea

d of

est

uary

, av

erag

e sa

linity

in Z

one

C <

20,

Ave

rage

sal

inity

11

km u

pstre

am fr

om m

outh

> 2

0 fo

r no

mor

e th

an 3

m

onth

s of

the

year

, sal

inity

<40

in s

altm

arsh

se

dim

ents

Sy

stem

va

riabl

es

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

5 m

g/ℓ

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

ts

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e to

mai

ntai

n na

tura

l bat

hym

etry

and

the

sedi

men

t cha

ract

e ris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line



68

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Med

ian

phyt

opla

nkto

n ch

loro

phyl

l a (m

inim

um 5

si

tes)

sho

uld

not e

xcee

d 3.

5 μg

/ ℓ; p

reve

nt fo

rmat

ion

of lo

calis

ed p

hyto

plan

kton

blo

oms;

site

spe

cific

ch

loro

phyl

l a c

once

ntra

tion

exce

eds

20 μ

g/ℓ a

nd c

ell

dens

ity e

xcee

ds 1

0 00

0 ce

lls/ m

ℓ ; M

edia

n in

terti

dal

bent

hic

chlo

roph

yll a

(min

imum

5 s

ites)

exc

eeds

42

mg/

m2

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n th

e pr

esen

t are

a (2

013)

cov

ered

by

the

mac

roph

yte

habi

tats

: sur

face

wat

er a

rea:

298

.04

ha,

sand

and

mud

ban

ks :

81.0

2 ha

, ree

ds a

nd s

edge

s 6.

72 h

a, fl

oodp

lain

(sup

ratid

al s

alt m

arsh

): 13

7.77

ha

; Mai

ntai

n th

e in

tegr

ity o

f the

rem

aini

ng s

upra

tidal

sa

lt m

arsh

; mai

ntai

n th

e re

ed a

nd s

edge

sta

nds

in

the

uppe

r rea

ches

of t

he e

stua

ry; r

ehab

ilitat

e 20

% o

f th

e flo

odpl

ain

habi

tat b

y re

mov

ing

any

agric

ultu

ral

berm

s an

d in

vasi

ve p

lant

s; m

aint

ain

the

inte

grity

of

the

ripar

ian

zone

; cha

nge

in th

e ar

ea c

over

ed b

y sa

lt m

arsh

, ree

ds a

nd s

edge

s no

t to

exce

ed 2

0% fr

om

base

line;

inva

sive

pla

nts

(e.g

. Euc

alyp

tus,

pric

kly

pear

, Tam

arix

) cov

er n

ot to

exc

eed

5% o

f tot

al

flood

plai

n ar

ea

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n ric

h po

pula

tions

of t

he m

udpr

awn

Upo

gebi

a af

rican

a on

mud

bank

s in

the

mid

dle

estu

ary

(Zon

es A

and

B);

mud

praw

n de

nsity

sho

uld

not d

evia

te fr

om a

vera

ge b

asel

ine

leve

ls b

y m

ore

than

25%

in e

ach

seas

on; m

aint

ain

rich

inve

rtebr

ate

com

mun

ities

ass

ocia

ted

with

the

REI

zon

e in

the

uppe

r est

uary

(zoo

plan

kton

and

ben

thos

); th

e do

min

ant s

peci

es in

the

zone

(zoo

plan

kton

and

be

ntho

s) s

houl

d no

t dev

iate

from

ave

rage

bas

elin

e le

vels

by

mor

e th

an 4

0% in

eac

h se

ason



69

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; Cat

egor

y IIa

ob

ligat

e de

pend

ents

sho

uld

be w

ell r

epre

sent

ed b

y la

rge

expl

oite

d sp

ecie

s

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

ary

shou

ld c

onta

in a

div

erse

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al ta

xono

mic

gro

ups

(see

201

5 EW

R re

port)

.; te

rn ro

osts

sho

uld

be s

een

at th

e es

tuar

y on

a

regu

lar b

asis

; apa

rt fro

m g

ulls

, ter

ns a

nd re

gion

ally

in

crea

sing

spe

cies

suc

h as

Egy

ptia

n G

oose

, the

es

tuar

y sh

ould

gen

eral

ly s

uppo

rt m

ore

than

200

bi

rds;

num

bers

of b

irds

othe

r tha

n gu

lls, t

erns

and

re

gion

ally

incr

easi

ng s

peci

es s

houl

d no

t fal

l bel

ow

120

for t

hree

con

secu

tive

coun

ts; n

umbe

rs o

f w

ater

bird

spe

cies

dro

p sh

ould

not

bel

ow 1

5 fo

r 3

cons

ecut

ive

coun

ts

Tabl

e 23

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

F12

Duiw

enho

ks

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

F12 Duiwenhoks

III

H80E

F12-E13

Duiwenhoks Estuary

gxi2

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

per

TEC

Mon

ths


Annual

MM

R/M

AR (%

N

at)

92.2 92.0 87.7 84.0 84.7 90.7 92.9 93.5 93.5 93.8 94.4 93.5 91.9

Qua

lity

Nut

rient

s D

IN

Inor

gani

c nu

trien

t co

ncen

tratio

ns n

ot to

ex

ceed

TPC

s fo

r m

acro

phyt

es a

nd

mic

roal

gae

Riv

er in

flow

: NO

x-N

not

to e

xcee

d 10

0 μg

/ℓ ov

er 2

co

nsec

utiv

e m

onth

s, N

H3-N

not

to e

xcee

d 20

μg/

ℓ ove

r 2

cons

ecut

ive

mon

ths;

Est

uary

(exc

ept d

urin

g up

wel

ling

or

flood

s): a

vera

ge N

Ox-

N n

ot to

exc

eed

100

μg/ℓ,

no

sing

le

mea

sure

men

t to

exce

ed 1

50 μ

g/ℓ,

aver

age

NH

3-N n

ot to

ex

ceed

20

μg/ℓ

durin

g su

rvey

, no

sing

le m

easu

rem

ent t

o ex

ceed

100

μg/

ℓ



70

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

DIP

Riv

er in

flow

: PO

4-P n

ot to

exc

eed

20 μ

g/ℓ o

ver 2

co

nsec

utiv

e m

onth

s; E

stua

ry (e

xcep

t dur

ing

upw

ellin

g or

flo

ods)

: ave

rage

PO

4-P n

ot to

exc

eed

20 μ

g/ℓ d

urin

g su

rvey

, no

sing

le m

easu

rem

ent t

o ex

ceed

50

μg/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

inve

rtebr

ates

, m

acro

phyt

es a

nd

mic

roal

gae

Salin

ity s

houl

d no

t exc

eed

0 at

hea

d of

est

uary

, ave

rage

sa

linity

in Z

one

C <

20,

Ave

rage

sal

inity

11

km u

pstre

am

from

mou

th >

20

for n

o m

ore

than

3 m

onth

s of

the

year

Syst

em

varia

bles

D

isso

lved

ox

ygen

Syst

em v

aria

bles

not

to

exc

eed

TPC

s fo

r bi

ota

Entir

e es

tuar

y an

d riv

er in

flow

: DO

>5

mg/

ℓ

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull c

onta

ct

recr

eatio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity

with

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

w

ater

qua

lity

and

habi

tat r

emai

ns

suita

ble

for b

iota

ty

pica

lly fo

und

in th

e es

tuar

y

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

oes

not c

hang

e m

ore

than

30%

from

pre

sent

dur

ing

low

flow

s (s

umm

er).

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

su

ffici

ent t

o m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>10

% fr

om e

stab

lishe

d ba

selin

e

Biot

a M

icro

alga

e

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd m

ediu

m-

low

bio

mas

s

Med

ian

phyt

opla

nkto

n ch

loro

phyl

l a (m

inim

um 5

site

s) n

ot

to e

xcee

d 3.

5 μg

/ℓ; p

reve

nt fo

rmat

ion

of lo

calis

ed

phyt

opla

nkto

n bl

oom

s; m

aint

ain

a hi

gh m

edia

n in

terti

dal

bent

hic

mic

roal

gal b

iom

ass;

med

ian

inte

rtida

l ben

thic

ch

loro

phyl

l a (m

inim

um 5

site

s) n

ot to

exc

eed

42 m

g/m

2;

s ite s

peci

fic c

hlor

ophy

ll a

conc

entra

tion

not t

o ex

ceed

20

μg/ℓ

and

cell

dens

ity n

ot to

exc

eed

10 0

00 c

ells

/ℓ.



71

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of

the

EFZ

by a

lien

spec

ies

Mai

ntai

n th

e pr

esen

t are

a (2

013)

cov

ered

by

the

mac

roph

yte

habi

tats

: sur

face

wat

er a

rea:

40

ha, S

and

and

mud

ban

ks :

29 h

a, S

alt m

arsh

: 26

ha, R

eeds

and

se

dges

3 h

a, F

lood

plai

n: 6

ha;

Inva

sive

pla

nts

(e.g

. bla

ck

wat

tle, p

rickl

y pe

ar, T

amar

ix) c

over

mus

t rem

ain

< 5%

of

tota

l flo

odpl

ain

area

; mai

ntai

n th

e in

tegr

ity o

f the

sal

t m

arsh

; mai

ntai

n th

e re

ed a

nd s

edge

sta

nds

in th

e m

iddl

e an

d up

per r

each

es o

f the

est

uary

; reh

abilit

ate

10%

of t

he

flood

plai

n ha

bita

t by

rem

ovin

g an

y ag

ricul

tura

l ber

ms

and

inva

sive

pla

nts;

mai

ntai

n th

e in

tegr

ity o

f the

ripa

rian

zone

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

be

nthi

c m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n ric

h po

pula

tions

of t

he m

udpr

awn

Upo

gebi

a af

rican

a on

mud

bank

s in

the

mid

dle

estu

ary

(Zon

es A

and

B)

; mud

praw

n de

nsity

sho

uld

not d

evia

te fr

om a

vera

ge

base

line

leve

ls b

y m

ore

than

25%

in e

ach

seas

on;

mai

ntai

n ric

h in

verte

brat

e co

mm

uniti

es a

ssoc

iate

d w

ith

the

REI

zon

e in

the

uppe

r est

uary

(zoo

plan

kton

and

be

ntho

s); t

he d

omin

ant s

peci

es in

the

zone

(zoo

plan

kton

an

d be

ntho

s) s

houl

d no

t dev

iate

from

ave

rage

bas

elin

e le

vels

by

mor

e th

an 4

0% in

eac

h se

ason

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fis

h, p

reve

nt

colo

nisa

tion/

incr

ease

of

alie

n sp

ecie

s

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

ab

unda

nce)

to th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

re

port)

; num

eric

ally

ass

embl

age

shou

ld c

ompr

ise:

Ia

estu

arin

e re

side

nts

(50-

80%

of t

otal

abu

ndan

ce),

Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0 -20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III

mar

ine

vagr

ants

(not

mor

e th

an 5

%),

IV in

dige

nous

fish

(1

-5%

), V

cata

drom

ous

spec

ies

(1-5

%);

Cat

egor

y Ia

sp

ecie

s sh

ould

con

tain

via

ble

popu

latio

ns o

f at l

east

4

spec

ies;

Cat

egor

y IIa

obl

igat

e de

pend

ents

sho

uld

be w

ell

repr

esen

ted

by la

rge

expl

oite

d sp

ecie

s

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

ary

shou

ld c

onta

in a

div

erse

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al

taxo

nom

ic g

roup

s (s

ee 2

015

EWR

repo

rt).;

tern

roos

ts

shou

ld b

e se

en a

t the

est

uary

on

a re

gula

r bas

is; a

part

from

gul

ls, t

erns

and

regi

onal

ly in

crea

sing

spe

cies

suc

h as

Egy

ptia

n G

oose

, the

est

uary

sho

uld

gene

rally

sup

port

mor

e th

an 2

00 b

irds;

num

bers

of b

irds

othe

r tha

n gu

lls,

tern

s an

d re

gion

ally

incr

easi

ng s

p eci

es s

houl

d no

t fal

l be

low

120

for t

hree

con

secu

tive

coun

ts; n

umbe

rs o

f w

ater

bird

spe

cies

dro

p sh

ould

not

bel

ow 1

5 fo

r 3

cons

ecut

ive

coun

ts



72

Tabl

e 24

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

I18

Hess

equa

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

R U Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

I18 Hessequa

III

H90E

I18-E14

Goukou Estuary

gxi3

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

pe

r rec

omm

ende

d ec

olog

ical

flow

En

sure

the

pers

iste

nce

of

fresh

wat

er s

eepa

ge s

ites

in th

e lo

wer

and

mid

dle

reac

hes

of th

e es

tuar

y.

Riv

er in

flow

sho

uld

not

drop

M

aint

ain

wat

er le

vels

in

foun

tain

s (d

eter

min

e tro

ugh

base

line

stud

y)

Mon

ths


Annual

MM

R/M

AR

(% N

at)

81.7 81.4 72.8 70.0 71.2 81.9 85.0 85.0 84.1 84.5 85.7 83.8 81.4

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

: NO

x-N

not

to e

xcee

d 10

0 μg

/ℓ ov

er 2

co

nsec

utiv

e m

onth

s, N

H3-N

not

to e

xcee

d 20

μg/

ℓ ove

r 2

cons

ecut

ive

mon

ths;

Est

uary

(exc

ept d

urin

g up

wel

ling

or fl

oods

): av

erag

e N

Ox-

N n

ot to

exc

eed

100

μg/ℓ,

no

sing

le m

easu

rem

ent t

o ex

ceed

150

μg/

ℓ, av

erag

e N

H3-N

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey,

no s

ingl

e m

easu

rem

ent t

o ex

ceed

100

μg/

ℓ

DIP

Riv

er in

flow

: PO

4-P n

ot to

exc

eed

20 μ

g/ℓ o

ver 2

co

nsec

utiv

e m

onth

s; E

stua

ry (e

xcep

t dur

ing

upw

ellin

g or

floo

ds):

aver

age

PO4-P

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 5

0 μg

/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es,

mac

roph

ytes

and

m

icro

alga

e

Salin

ity s

houl

d no

t exc

eed

0 at

hea

d of

est

uary

, av

erag

e sa

linity

in Z

one

C <

20,

Ave

rage

sal

inity

11

km u

pstre

am fr

om m

outh

> 2

0 fo

r no

mor

e th

an 3

m

onth

s of

the

year

, sal

inity

<40

in s

altm

arsh

se

dim

ents

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

5 m

g/ℓ

pH

6.0

< pH

> 8

.0 (b

lack

wat

er s

yste

m)

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acc

epta

ble

cate

gory

fo

r ful

l con

tact

recr

eatio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith E

stua

ry m

outh

per

man

ently

ope

n



73

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

R U Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Tida

l var

iatio

n

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

wat

er

qual

ity a

nd h

abita

t re

mai

ns s

uita

ble

for b

iota

ty

pica

lly fo

und

in th

e es

tuar

y

Aver

age

tidal

am

plitu

de n

ear t

he m

outh

dur

ing

low

flo

ws

(sum

mer

) mus

t not

cha

nge

by >

10%

from

es

tabl

ishe

d ba

selin

e.

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt

to m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd m

ediu

m-lo

w

biom

ass

Med

ian

phyt

opla

nkto

n ch

loro

phyl

l a (m

inim

um 5

site

s)

not t

o ex

ceed

3.5

μg/

ℓ; pr

even

t for

mat

ion

of lo

calis

ed

phyt

opla

nkto

n bl

oom

s; m

aint

ain

a hi

gh m

edia

n in

terti

dal b

enth

ic m

icro

alga

l bio

mas

s; m

edia

n in

terti

dal

bent

hic

chlo

roph

yll a

(min

imum

5 s

ites)

not

to e

xcee

d 42

mg/

m2;

site

spe

cific

chl

orop

hyll

a co

ncen

tratio

n no

t to

exc

eed

20 μ

g/ℓ a

nd c

ell d

ensi

ty n

ot to

exc

eed

1000

0 ce

lls/ℓ.

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, di

strib

utio

n an

d ric

hnes

s of

mac

roph

yte

grou

ps,

limit

colo

nisa

tion/

spre

ad

of th

e EF

Z by

alie

n sp

ecie

s

Mai

ntai

n th

e pr

esen

t are

a (2

014)

cov

ered

by

the

mac

roph

yte

habi

tats

: Ope

n su

rface

wat

er a

rea:

206

, Sa

nd a

nd m

ud b

anks

: 35,

Sub

mer

ged

mac

roph

ytes

: 5,

Salt

mar

sh: 5

7, R

eeds

and

sed

ges:

21;

mai

ntai

n po

cket

s of

reed

s in

low

er a

nd m

iddl

e re

ache

s (li

nked

to

fres

hwat

er s

eepa

ge s

ites)

; mai

ntai

n th

e re

ed a

nd

sedg

e st

ands

in th

e up

per r

each

es o

f the

est

uary

; re

habi

litat

e 20

% o

f the

floo

dpla

in h

abita

t by

rem

ovin

g ag

ricul

ture

and

inva

sive

pla

nts;

mai

ntai

n th

e in

tegr

ity

of th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

diff

eren

t gro

ups

of

bent

hic

mac

rofa

una

and

zoop

lank

ton

Mai

ntai

n ric

h po

pula

tions

of t

he m

udpr

awn

Upo

gebi

a af

rican

a on

mud

bank

s in

the

mid

dle

estu

ary

(Zon

es A

an

d B)

; mud

praw

n de

nsity

sho

uld

not d

evia

te fr

om

aver

age

base

line

leve

ls b

y m

ore

than

25%

in e

ach

seas

on; m

aint

ain

rich

inve

rtebr

ate

com

mun

ities

as

soci

ated

with

the

REI

zon

e in

the

uppe

r est

uary

(z

oopl

ankt

on a

nd b

enth

os);

the

dom

inan

t spe

cies

in

the

zone

(zoo

plan

kton

and

ben

thos

) sho

uld

not

devi

ate

from

ave

rage

bas

elin

e le

vels

by

mor

e th

an

40%

in e

ach

seas

on



74

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

R U Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

diff

eren

t gro

ups

of fi

sh,

prev

ent

colo

nisa

tion/

incr

ease

of

alie

n sp

ecie

s

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

an

d ab

unda

nce)

to th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly a

ssem

blag

e sh

ould

co

mpr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al

abun

danc

e), I

b m

arin

e an

d es

tuar

ine

bree

ders

(10-

20%

), IIa

obl

igat

e es

tuar

ine-

depe

nden

t (10

-20%

), IIb

es

tuar

ine

asso

ciat

ed s

peci

es (5

-15%

), IIc

mar

ine

oppo

rtuni

sts

(20-

80%

), III

mar

ine

vagr

ants

(not

mor

e th

an 5

%),

IV in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

pop

ulat

ions

of a

t lea

st 4

spe

cies

(; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

diff

eren

t avi

faun

a gr

oups

The

estu

ary

shou

ld c

onta

in a

div

erse

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al ta

xono

mic

gro

ups

(see

201

5 EW

R re

port)

.; te

rn ro

osts

sho

uld

be s

een

at th

e es

tuar

y on

a re

gula

r ba

sis;

apa

rt fro

m g

ulls

, ter

ns a

nd re

gion

ally

incr

easi

ng

spec

ies

such

as

Egyp

tian

Goo

se, t

he e

stua

ry s

houl

d ge

nera

lly s

uppo

rt m

ore

than

200

bird

s; n

umbe

rs o

f bi

rds

othe

r tha

n gu

lls, t

erns

and

regi

onal

ly in

crea

sing

sp

ecie

s sh

ould

not

fall

belo

w 1

20 fo

r thr

ee c

onse

cutiv

e co

unts

; num

bers

of w

ater

bird

spe

cies

dro

p sh

ould

not

be

low

15

for 3

con

secu

tive

coun

ts

Tabl

e 25

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

G14

Gro

ot-B

rak

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

G14 Groot-Brak

III

K10F

G14-E15

Klein-Brak Estuary

gxi4

C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh, m

acro

phyt

es,

mic

roal

gae

and

wat

er

qual

ity

Mon

ths


Annual

MM

R/M

AR

(% N

at)

77.4 77.4 75.1 71.7 70.2 75.8 77.9 78.5 78.0 78.1 79.5 78.8 77.0

Qua

lity

Nut

rient

s D

IN

Inor

gani

c nu

trien

t co

ncen

tratio

ns n

ot to

ex

ceed

TPC

s fo

r m

acro

phyt

es a

nd

mic

roal

gae

Riv

er in

flow

: NO

x-N

not

to e

xcee

d 10

0 μg

/ℓ ov

er 2

co

nsec

utiv

e m

onth

s, N

H3-N

not

to e

xcee

d 20

μg/

ℓ ov

er 2

con

secu

tive

mon

ths;

Est

uary

(exc

ept d

urin

g up

wel

ling

or fl

oods

): av

erag

e N

Ox-

N n

ot to

exc

eed

100

μg/ℓ,

no

sing

le m

easu

rem

ent t

o ex

ceed

150

μg

/ℓ, a

vera

ge N

H3-N

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 1

00 μ

g/ℓ



75

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

DIP

Riv

er in

flow

: PO

4-P n

ot to

exc

eed

20 μ

g/ℓ o

ver 2

co

nsec

utiv

e m

onth

s; E

stua

ry (e

xcep

t dur

ing

upw

ellin

g or

floo

ds):

aver

age

PO4-P

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 5

0 μg

/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

A sa

linity

gra

dien

t sho

uld

alw

ays

be p

rese

nt in

the

uppe

r rea

ches

of t

he e

stua

ry (Z

one

D a

nd F

), an

R

EI z

one

shou

ld a

lway

s be

pre

sent

in th

e up

per

reac

hes

of th

e es

tuar

y (Z

one

D a

nd F

), sa

linity

sh

ould

not

exc

eed

35

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

Entir

e es

tuar

y an

d riv

er in

flow

: DO

>5

mg/

ℓ

TSS

TSS

<5 m

g/ ℓ

(low

flow

) pH

7.

0 <

pH >

8.5

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (m

edia

n); p

reve

nt fo

rmat

ion

of

phyt

opla

nkto

n bl

oom

s

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pr

even

t the

spr

ead

of re

eds

into

ope

n w

ater

; pr

even

t an

incr

ease

in n

utrie

nts

and

mac

roal

gal

bloo

ms;

pre

vent

the

spre

ad o

f inv

asiv

e tre

es (e

.g.

Acac

ia s

pp.)

in th

e rip

aria

n zo

ne



76

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n ric

h po

pula

tions

of t

he m

udpr

awn

Upo

gebi

a af

rican

a on

mud

bank

s in

the

mid

dle

estu

ary

(Zon

es A

and

B);

mud

praw

n de

nsity

sho

uld

not d

evia

te fr

om a

vera

ge b

asel

ine

leve

ls b

y m

ore

than

25%

in e

ach

seas

on; m

aint

ain

rich

inve

rtebr

ate

com

mun

ities

ass

ocia

ted

with

the

REI

zon

e in

the

uppe

r est

uary

(zoo

plan

kton

and

ben

thos

); th

e do

min

ant s

peci

es in

the

zone

(zoo

plan

kton

and

be

ntho

s) s

houl

d no

t dev

iate

from

ave

rage

bas

elin

e le

vels

by

mor

e th

an 4

0% in

eac

h se

ason

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0 -20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Estu

ary

shou

ld c

onta

in a

div

erse

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al g

roup

s. S

altm

arsh

/wet

land

s in

the

flood

plai

n sh

ould

be

rich

in b

irdlif

e. In

terti

dal a

reas

sh

ould

hav

e a

good

den

sity

and

div

ersi

ty o

f bot

h la

rger

and

sm

alle

r wad

ers;

num

bers

of w

ater

bird

s on

the

entir

e sy

stem

sho

uld

not d

rop

belo

w 3

0 sp

ecie

s or

bel

ow 2

50 b

irds

for t

hree

con

secu

tive

coun

ts; n

umbe

rs o

f wat

erbi

rds

in th

e lo

wer

est

uary

sh

ould

not

dro

p be

low

10

spec

ies

or 5

0 bi

rds

(exc

ludi

ng te

rns

and

gulls

) for

thre

e co

nsec

utiv

e co

unts



77

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

G14 Groot-Brak

III

K20A

G14-E16

Groot-Brak Estuary

gxi5

E

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh, m

acro

phyt

es,

mic

roal

gae

and

wat

er

qual

ity.

Mon

ths


Annual

MM

R/M

AR

(% N

at)

62.2 67.3 55.3 48.2 43.4 55.7 49.2 54.9 38.3 43.7 63.4 63.8 56.2

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

: NO

x-N

not

to e

xcee

d 10

0 μg

/ℓ ov

er 2

co

nsec

utiv

e m

onth

s, N

H3-N

not

to e

xcee

d 20

μg/

ℓ ov

er 2

con

secu

tive

mon

ths;

Est

uary

(exc

ept d

urin

g up

wel

ling

or fl

oods

): av

erag

e N

Ox-

N n

ot to

exc

eed

100

μg/ℓ,

no

sing

le m

easu

rem

ent t

o ex

ceed

150

μg

/ℓ, a

vera

ge N

H3-N

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 1

00 μ

g/ℓ

DIP

Riv

er in

flow

: PO

4-P n

ot to

exc

eed

20 μ

g/ℓ o

ver 2

co

nsec

utiv

e m

onth

s; E

stua

ry (e

xcep

t dur

ing

upw

ellin

g or

floo

ds):

aver

age

PO4-P

not

to e

xcee

d 20

μg/

ℓ dur

ing

surv

ey, n

o si

ngle

mea

sure

men

t to

exce

ed 5

0 μg

/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

A sa

linity

gra

dien

t sho

uld

alw

ays

be p

rese

nt in

the

uppe

r rea

ches

of t

he e

stua

ry (Z

one

D a

nd F

), an

R

EI z

one

shou

ld a

lway

s be

pre

sent

in th

e up

per

reac

hes

of th

e es

tuar

y (Z

one

D a

nd F

), sa

linity

sh

ould

not

exc

eed

35

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

En

tire

estu

ary

and

river

inflo

w: D

O >

5 m

g/ℓ

pH

6 <

pH >

8.5

in e

stua

ry

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line



78

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w p

hyto

plan

kton

bio

mas

s. M

aint

ain

mic

roal

gal g

roup

div

ersi

ty a

s m

easu

red

for t

he

base

line

surv

ey; p

hyto

plan

kton

bio

mas

s sh

ould

not

in

crea

se b

y m

ore

than

20%

abo

ve b

asel

ine

conc

entra

tions

; phy

topl

ankt

on g

roup

div

ersi

ty to

sh

ould

not

cha

nge

mor

e t h

an 2

0% fr

om b

asel

ine

cond

ition

s; m

aint

ain

high

sub

tidal

ben

thic

mic

roal

gal

biom

ass

durin

g th

e cl

osed

mou

th p

hase

and

low

in

terti

dal b

enth

ic m

icro

alga

l bio

mas

s du

ring

the

open

pha

se; E

pipe

lic d

iato

ms

indi

cativ

e of

bra

ckis

h co

nditi

ons

shou

ld b

e fo

und

durin

g th

e cl

osed

pha

se.

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

as

for

pres

ent (

2013

): Su

bmer

ged

mac

roph

yte,

Rup

pia

cirrh

osa

beds

: ~5

ha, Z

oste

ra c

apen

sis

pres

ent

durin

g op

en m

outh

con

ditio

ns, i

nter

tidal

sal

t mar

sh:

~13

ha, s

upra

tidal

and

floo

dpla

in s

alt m

arsh

: ~26

.6

ha),

Ree

d (P

hrag

mite

s au

stra

lis) a

nd s

edge

sta

nds

in th

e m

iddl

e / u

pper

reac

hes:

~2.

5 ha

); pr

even

t ex

cess

ive

filam

ento

us m

acro

alga

l gro

wth

. Are

a co

vere

d sh

ould

be

half

that

cov

ered

by

subm

erge

d m

acro

phyt

es a

nd le

ss th

an 5

0 %

of t

he o

pen

wat

er

surfa

ce a

rea;

mai

ntai

n th

e zo

natio

n of

sal

t mar

sh

and

dist

ribut

ion

of d

iffer

ent s

peci

es a

long

an

elev

atio

n gr

adie

nt. E

nsur

e th

e lo

ng-te

rm

pers

iste

nce

of in

terti

dal s

alt m

arsh

spe

cies

suc

h as

Tr

iglo

chin

spp

. and

Cot

ula

coro

nopi

folia

; pre

vent

hy

pers

alin

e se

dim

ent a

nd g

roun

dwat

er c

ondi

tions

in

the

salt

mar

sh. S

edim

ent e

lect

rical

con

duct

ivity

sh

ould

be

appr

oxim

atel

y 30

mS

and

sim

ilar t

o gr

ound

wat

er v

alue

s.

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Den

sity

of m

udpr

awns

sho

uld

exce

ed 1

00 –

150

bu

rrow

cou

nts

per m

2 in

the

high

est d

ensi

ty a

reas

; in

the

zoop

lank

ton,

the

dens

ity o

f Pse

udod

iapt

omus

he

ssei

sho

uld

exce

ed le

vels

of a

bout

500

0 -10

000

m3

in th

e up

per e

stua

ry in

spr

ing.

Sal

inity

var

iatio

n in

the

estu

ary

is h

ighl

y va

riabl

e an

d th

e m

outh

re

mai

ns c

lose

d fo

r ext

ende

d pe

riods

- th

is m

ay a

lso

lead

to th

e te

mpo

rary

abs

ence

of s

ome

inve

rtebr

ate

spec

ies

that

mig

ht b

e ex

pect

ed to

occ

ur h

ere.



79

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

five

estu

arin

e as

soci

atio

n ca

tego

ries

in s

imila

r pro

porti

ons

(div

ersi

ty a

nd a

bund

ance

) to

that

und

er th

e re

fere

nce.

Num

eric

ally

, ass

embl

age

shou

ld

com

pris

e: E

stua

rine

spec

ies

(40 -

60%

), Es

tuar

ine

asso

ciat

ed m

arin

e sp

ecie

s (3

0-50

%),

Indi

geno

us

fresh

wat

er fi

sh (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

pop

ulat

ions

of a

t lea

st tw

o sp

ecie

s (e

.g. G

. aes

tuar

ia, &

Hyp

oram

phus

cap

ensi

s);

Cat

egor

y IIa

obl

igat

e de

pend

ents

sho

uld

be w

ell

repr

esen

ted

by a

t lea

st tw

o la

rge

expl

oite

d sp

ecie

s

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Ret

ain

spec

ies

richn

ess,

abu

ndan

ce a

nd d

ensi

ty o

f bi

rd c

ount

s of

resi

dent

and

mig

rant

wad

ers,

gul

ls,

tern

s, w

adin

g bi

rds

and

wat

erfo

wl w

ithin

15

% o

f pr

esen

t sta

te (2

006)

.

G14 Groot-Brak

III

K10A

G14-E17

Blinde Estuary

gxi1

9 B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

cl

ose

to p

rese

nt a

s po

ssib

le

(sm

all s

yste

m n

eeds

mos

t flo

ws)

Mon

ths


Annual

MM

R/M

AR

(% N

at)

69.6 69.9 67.8 65.6 64.8 68.7 69.3 70.1 69.0 69.9 70.7 70.3 69.2

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

to e

xcee

d 10

0 μg

/ℓ (a

vera

ge)

DIP

D

IP n

ot to

exc

eed

20 μ

g/ℓ (

aver

age)

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

<20

(exp

ecte

d ra

nge

5-15

)

Syst

em

varia

bles

Dis

solv

ed

oxyg

en

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

>5

mg/

l

Turb

idity

Tu

rbid

ity n

ot to

exc

eed

10 N

TU in

low

flow

sea

son

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e



80

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass;

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

; phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

: Ree

ds

& se

dges

: 0.0

4 ha

, San

d/m

ud b

anks

: 0.0

5 ha

, Ope

n w

ater

: 1.6

6 ha

; pre

vent

the

spre

ad o

f ree

ds in

to

open

wat

er; p

reve

nt a

n in

crea

se in

nut

rient

s an

d m

acro

alga

l blo

oms;

pre

vent

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

; es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y; p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd

1 in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, bu

t the

pro

porti

on o

f est

uary

dep

ende

nt m

arin

e sp

ecie

s (b

ased

on

abun

danc

e) s

houl

d no

t fal

l bel

ow

2%.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st

data

and

or i

nitia

l sur

veys

) num

ber o

f spe

cies

an

d/or

bird

s co

unte

d fo

r thr

ee c

onse

cutiv

e su

mm

er

or w

inte

r cou

nts



81

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

G14 Groot-Brak

III

K10A

G14-E18

Tweekuilen Estuary

gxi2

0 D

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

cl

ose

to p

rese

nt a

s po

ssib

le

(sm

all s

yste

m n

eeds

mos

t flo

ws)

Mon

ths


Annual

MM

R/M

AR

(% N

at)

72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

to e

xcee

d 10

0 μg

/ℓ (a

vera

ge)

DIP

D

IP n

ot to

exc

eed

20 μ

g/ℓ (

aver

age)

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

<20

(exp

ecte

d ra

nge

5-15

)

Syst

em

varia

bles

D

isso

lved

ox

ygen

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>5 m

g/l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

: Ree

ds

& se

dges

: 0.0

4 ha

, San

d/m

ud b

anks

: 0.0

5 ha

, Ope

n w

ater

: 1.6

6 ha

; pre

vent

the

spre

ad o

f ree

ds in

to

open

wat

er; p

reve

nt a

n in

crea

se in

nut

rient

s an

d m

acro

alga

l blo

oms;

pre

vent

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne



82

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

; es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y; p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd

1 in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, bu

t the

pro

porti

on o

f est

uary

dep

ende

nt m

arin

e sp

ecie

s (b

ased

on

abun

danc

e) s

houl

d no

t fal

l bel

ow

2%.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st

data

and

or i

nitia

l sur

veys

) num

ber o

f spe

cies

an

d/or

bird

s co

unte

d fo

r thr

ee c

onse

cutiv

e su

mm

er

or w

inte

r cou

nts

G14 Groot-Brak

III

K10A

G14-E19

Gericke Estuary

gxi2

1 D

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

cl

ose

to p

rese

nt a

s po

ssib

le

(sm

all s

yste

m n

eeds

mos

t flo

ws)

Mon

ths


Annual

MM

R/M

AR

(% N

at)

72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3 72.3

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

to e

xcee

d 10

0 μg

/ℓ (a

vera

ge)

DIP

D

IP n

ot to

exc

eed

20 μ

g/ℓ (

aver

age)

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

<20

(exp

ecte

d ra

nge

5-15

)

Syst

em

varia

bles

D

isso

lved

ox

ygen

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>5 m

g/l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)



83

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

: Ree

ds

& se

dges

: 0.0

4 ha

, San

d/m

ud b

anks

: 0.0

5 ha

, Ope

n w

ater

: 1.6

6 ha

; pre

vent

the

spre

ad o

f ree

ds in

to

open

wat

er; p

reve

nt a

n in

crea

se in

nut

rient

s an

d m

acro

alga

l blo

oms;

pre

vent

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

; es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y; p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd

1 in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

a lly

, bu

t the

pro

porti

on o

f est

uary

dep

ende

nt m

arin

e sp

ecie

s (b

ased

on

abun

danc

e) s

houl

d no

t fal

l bel

ow

2%.



84

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st

data

and

or i

nitia

l sur

veys

) num

ber o

f spe

cies

an

d/or

bird

s co

unte

d fo

r thr

ee c

onse

cutiv

e su

mm

er

or w

inte

r cou

nts

G14 Groot-Brak

III

K10B

G14-E20

Hartenbos Estuary

gxi2

2 D

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n at

leas

t pre

sent

-da

y ba

se fl

ows

Mon

ths


Annual

MM

R/M

AR

(% N

at)

59.7 64.0 68.7 71.1 67.4 60.3 64.2 64.7 65.9 60.8 66.1 66.9 65.0

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<20

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

50 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity a

long

the

estu

ary

shou

ld n

ot d

rop

mor

e th

an 5

bel

ow b

asel

ine

aver

age

Syst

em

varia

bles

Turb

idity

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

Turb

idity

<20

NTU

in lo

w fl

ow s

easo

n

Sech

ii de

pth

Sech

ii de

pth

shou

ld >

0.5

m in

the

fresh

er p

art o

f the

es

tuar

y D

isso

lved

ox

ygen

>5

mg/

l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral b

athy

met

ry

and

sedi

men

t ch

arac

teris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om

esta

blis

hed

base

line



85

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent RU

Reso

urce

Na

me

Biop

hysi

cal

Node

Nam

e TE

C Co

mpo

nent

Su

b-co

mpo

nent

In

dica

tor

RQO

Nar

rativ

e RQ

O N

umer

ic

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

Phy

topl

ankt

on n

ot to

exc

eed

8 μg

/ℓ (m

edia

n), P

hyto

plan

kton

not

to e

xcee

d 20

μg/

ℓ an

d/or

cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (o

nce-

off);

Ben

thic

mic

roal

gae

not t

o ex

ceed

42

mg/

m2 (m

edia

n), D

inof

lage

llate

s, c

hlor

ophy

tes

and/

or c

yano

bact

eria

> 1

0% o

f rel

ativ

e ab

unda

nce

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pr

even

t the

spr

ead

of re

eds

into

ope

n w

ater

; pr

even

t an

incr

ease

in n

utrie

nts

and

mac

roal

gal

bloo

ms;

pre

vent

the

spre

ad o

f inv

asiv

e tre

es (e

.g.

Acac

ia s

pp.)

in th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0 -80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0 -20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

II a

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st

data

and

or i

nitia

l sur

veys

) num

ber o

f spe

cies

an

d/or

bird

s co

unte

d fo

r thr

ee c

onse

cutiv

e su

mm

er

or w

inte

r cou

nts



86

Tabl

e 26

: Res

ourc

e Q

ualit

y O

bjec

tives

for E

STUA

RIES

in p

riorit

y Re

sour

ce U

nits

in th

e In

tegr

ated

Uni

t of A

naly

sis

G15

Coa

stal

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

G15 Coastal

II

K30A

G15-E21

Maalgate Estuary

gxi6

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

80.3 79.1 74.5 73.4 71.3 80.5 82.1 82.7 85.9 84.3 83.7 81.9 79.3

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<10

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

20 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity >

10

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

<10

NTU

in lo

w fl

ow s

easo

n D

isso

lved

ox

ygen

>5

mg/

l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a M

icro

alga

e

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms



87

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pre

vent

th

e sp

read

of r

eeds

into

ope

n w

ater

; pre

vent

an

incr

ease

in n

utrie

nts

and

mac

roal

gal b

loom

s; p

reve

nt

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K30B

G15-E22

Gwaing Estuary

gxi7

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

84.9 84.3 82.8 83.0 81.6 84.8 86.3 87.0 89.1 87.8 86.8 86.1 85.0

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<10

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

20 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity >

10

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

<10

NTU

in lo

w fl

ow s

easo

n D

isso

lved

ox

ygen

>5

mg/

l



88

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e to

mai

ntai

n na

tura

l bat

hym

etry

and

the

sedi

men

t cha

ract

eris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pre

vent

th

e sp

read

of r

eeds

into

ope

n w

ater

; pre

vent

an

incr

ease

in n

utrie

nts

and

mac

roal

gal b

loom

s; p

reve

nt

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.



89

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K30C

G15-E23

Kaaimans Estuary

gxi8

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

70.9 74.5 74.7 70.7 70.4 72.8 72.3 73.7 69.5 67.3 74.1 73.8 72.5

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Entir

e es

tuar

y an

d riv

er in

flow

: DIN

<10

0µg/

ℓ

DIP

En

tire

estu

ary

and

river

inflo

w: D

IP <

20 µ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity >

10

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

<10

NTU

in lo

w fl

ow s

easo

n D

isso

lved

ox

ygen

>5

mg/

l

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

wat

er

qual

ity a

nd h

abita

t rem

ains

su

itabl

e fo

r bio

ta ty

pica

lly

foun

d in

the

estu

ary

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e



90

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pre

vent

th

e sp

read

of r

eeds

into

ope

n w

ater

; pre

vent

an

incr

ease

in n

utrie

nts

and

mac

roal

gal b

loom

s; p

reve

nt

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

a lly

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K30D

G15-E24 Wilderness

Estuary (Touw)

gxi9

B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

mai

ntai

n w

ater

qua

lity

and

the

requ

ired

habi

tat f

or

bird

s, fi

sh, m

acro

phye

s

Mon

ths


Annual



91

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

and

mac

roph

ytes

. Ab

stra

ctio

n sh

ould

not

re

sult

in fl

ow d

iffer

ing

mor

e th

an 5

% fr

om th

e pr

esen

t da

y (2

017)

kee

ping

in m

ind

the

perc

enta

ge n

MAR

to

be m

aint

aine

d in

the

syst

em (8

8.6%

) to

keep

it

in it

s ec

olog

ical

cat

egor

y.

MM

R/M

AR (%

N

at)

89.7 90.9 87.2 84.5 83.5 85.5 86.9 90.8 88.7 88.1 93.1 92.8 88.6

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

, NO

x-N

not

to e

xcee

d 50

μg/

ℓ ove

r tw

o co

nsec

utiv

e m

onth

s, N

H3-

N n

ot to

exc

eed

10 μ

g/ℓ

over

two

cons

ecut

ive

mon

ths;

Est

uary

: Ave

rage

N

Ox-

N <

50 μ

g/ℓ,

no s

ingl

e m

easu

re >

100

μg/ℓ,

av

erag

e N

H3 -

N <

10 μ

g/ℓ,

no s

ingl

e m

easu

re >

100

μg/ℓ;

Lak

es: a

vera

ge N

Ox-

N <

50 μ

g/ℓ,

no s

ingl

e m

easu

re >

100

μg/ℓ,

ave

rage

NH

3-N

<20

μg/

ℓ

DIP

Riv

er in

flow

, PO

4-P n

ot to

exc

eed

10 μ

g/ℓ o

ver t

wo

cons

ecut

ive

mon

ths;

Est

uary

: ave

rage

PO

4-P <

10

μg/ℓ,

no

sing

le s

ampl

e >5

0 μg

/ℓ ; L

akes

: ave

rage

PO

4-P <

20 μ

g/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Estu

ary

in th

e cl

osed

sta

te: a

vera

ge s

alin

ity in

Zon

e A

< 12

, ave

rage

sal

inity

in Z

one

B: <

10,

ave

rage

sa

linity

in Z

one

C <

5; L

akes

ave

rage

sal

inity

+2

from

bas

elin

e (2

013)

and

var

iabi

lity

shou

ld n

ot

incr

ease

as

belo

w: S

erpe

ntin

e: 1

2 ±

10, E

iland

vlei

: 8

± 5

, Lan

gvle

i: 10

±4

, Ron

devl

ei: 1

1 ±6

Syst

em

varia

bles

Turb

idity

Syst

em v

aria

bles

not

to

exce

ed T

PCs

for b

iota

Aver

age

<5 N

TU (l

ow fl

ow) t

hrou

ghou

t D

isso

lved

ox

ygen

>5

mg/

l thr

ough

out

pH

Riv

er in

flow

: 6.0

< p

H <

7.0

(Tou

w),

7.0

< pH

< 8

.0

(Dui

we)

, Est

uary

: 7.0

< p

H >

8.5

, Lak

es: 7

.5 <

pH

<

9

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e



92

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

caus

ed b

y an

thro

poge

nic

eutro

phic

atio

n

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Hav

e no

furth

er lo

ss to

ex

tent

, dis

tribu

tion

and

richn

ess

of m

acro

phyt

e gr

oups

, lim

it co

loni

satio

n/sp

read

of t

he

EFZ

by a

lien

spec

ies

Hav

e no

furth

er lo

ss to

the

pres

ent a

rea

(201

4)

cove

red

by th

e m

acro

phyt

e ha

bita

ts; h

ave

no fu

rther

lo

ss to

the

dist

ribut

ion

of s

ensi

tive

mac

roph

yte

habi

tats

(e.g

. sal

t mar

sh, s

ubm

erge

d m

acro

phyt

es);

cont

rol/e

limin

ate

inva

sive

pla

nts;

pre

vent

the

spre

ad

of re

eds

into

ope

n w

ater

that

resu

lts in

loss

of

sand

bank

are

as a

nd h

as a

neg

ativ

e im

pact

on

biot

a an

d hy

drol

ogic

al p

roce

sses

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n pr

esen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi

on s

and

bank

s in

low

er T

ouw

Est

uary

; mai

ntai

n ric

h po

pula

tions

of t

he b

enth

ic a

mph

ipod

Gra

ndid

iere

lla

ligno

rum

thro

ugho

ut th

e la

kes

and

estu

ary

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0 -80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

(G. a

estu

aria

, H

ypor

amph

us c

apen

sis,

Om

obra

nchu

s w

oodi

i);

Cat

egor

y IIa

obl

igat

e de

pend

ents

sho

uld

be w

ell

repr

esen

ted

by la

rge

expl

oite

d sp

ecie

s ( A

.japo

nicu

s,

L. li

thog

nath

us, P

. com

mer

soni

i, Li

chia

am

ia);

REI

sp

ecie

s do

min

ated

by

both

Myx

us c

apen

sis

and

G.

aest

uaria



93

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

arin

e la

ke s

yste

m s

houl

d co

ntai

n a

dive

rse

avifa

unal

com

mun

ity th

at in

clud

es re

pres

enta

tives

of

all t

he o

rigin

al g

roup

s, a

nd th

at s

usta

ins

the

popu

latio

ns th

at m

eet R

AMSA

R re

quire

men

ts;

num

bers

of w

ater

bird

s on

the

entir

e sy

stem

, oth

er

than

thos

e th

at h

ave

or a

re in

crea

sing

regi

onal

ly

such

as

Egyp

tian

Goo

se, s

houl

d no

t dro

p be

low

40

spec

ies

or b

elow

300

0 bi

rds

for t

hree

con

secu

tive

coun

ts

G15 Coastal

II

K40D

G15-E25

Swartvlei Estuary

gxi1

0 B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n a

flow

regi

me

to

crea

te th

e re

quire

d ha

bita

t fo

r bird

s, fi

sh,

mac

roph

ytes

, mic

roal

gae

and

wat

er q

ualit

y

Mon

ths


Annual

MM

R/M

AR (%

N

at)

89.5 87.6 80.9 78.7 81.3 86.8 86.8 88.5 85.9 88.4 90.9 90.2 86.6

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

Riv

er in

flow

, NO

x-N

not

to e

xcee

d 50

μg/

ℓ ove

r tw

o co

nsec

utiv

e m

onth

s, N

H3-

N n

ot to

exc

eed

10 μ

g/ℓ

over

two

cons

ecut

ive

mon

ths;

Est

uary

: Ave

rage

N

Ox-

N <

50 μ

g/ℓ,

no s

ingl

e m

easu

re >

100

μg/ℓ,

av

erag

e N

H3 -

N <

10 μ

g/ℓ,

no s

ingl

e m

easu

re >

100

μg/ℓ;

Lak

e: a

vera

ge N

Ox-

N <

50 μ

g/ℓ,

no s

ingl

e m

easu

re >

100

μg/ℓ,

ave

rage

NH

3-N

<20

μg/

ℓ

DIP

Riv

er in

flow

, PO

4-P

not t

o ex

ceed

10

μg/ℓ

over

two

cons

ecut

ive

mon

ths;

Est

uary

: ave

rage

PO

4-P

<10

μg/ℓ,

no

sing

le s

ampl

e >5

0 μg

/ℓ; L

akes

: ave

rage

PO

4-P

<20

μg/ℓ

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Estu

ary

in th

e cl

osed

sta

te: a

vera

ge s

alin

ity <

12;

Lake

ave

rage

sal

inity

+2

from

bas

elin

e (2

013)

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es

(tem

pera

ture

, pH

, tur

bidi

ty,

diss

olve

d ox

ygen

, su

spen

ded

solid

s an

d tu

rbid

ity) n

ot to

exc

eed

TPC

s fo

r bio

ta

Aver

age

<5 N

TU (l

ow fl

ow) t

hrou

ghou

t D

isso

lved

ox

ygen

>5

mg/

l thr

ough

out

pH

Riv

er in

flow

: 6.0

< p

H <

7.0

, Est

uary

: 6.0

< p

H <

8.5

, La

ke: 7

.0 <

pH

< 8

.5

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90t

h pe

rcen

tile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)



CONTINUES ON PAGE 386 - PART 4


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ISSN 1682-584342053

PART 4 OF 5





94

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20

μg/ℓ

and/

or c

ell d

ensi

ty n

ot to

exc

eed

10 0

00 c

ells

/ml

(onc

e-of

f); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (m

edia

n); p

reve

nt fo

rmat

ion

of p

hyto

plan

kton

bl

oom

s

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

No

furth

er lo

ss to

ext

ent,

dist

ribut

ion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

No

furth

er lo

ss to

the

pres

ent a

rea

(201

4) c

over

ed

by th

e m

acro

phyt

e ha

bita

ts; n

o fu

rther

loss

to th

e di

strib

utio

n of

sen

sitiv

e m

acro

phyt

e ha

bita

ts (e

.g.

salt

mar

sh, s

ubm

erge

d m

acro

phyt

es);

cont

rol/e

limin

ate

inva

sive

pla

nts;

pre

vent

the

spre

ad

of re

eds

into

ope

n w

ater

that

resu

lts in

loss

of

sand

bank

are

as a

nd h

as a

neg

ativ

e im

pact

on

biot

a an

d hy

drol

ogic

al p

roce

sses

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n pr

esen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi

on s

and

bank

s in

low

er T

ouw

Est

uary

; mai

ntai

n ric

h po

pula

tions

of t

he b

enth

ic a

mph

ipod

Gra

ndid

iere

lla

ligno

rum

thro

ugho

ut th

e la

kes

and

estu

ary



95

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

(G. a

estu

aria

, H

ypor

amph

us c

apen

sis,

Om

obra

nchu

s w

oodi

i);

Cat

egor

y IIa

obl

igat

e de

pend

ents

sho

uld

be w

ell

repr

esen

ted

by la

rge

expl

oite

d sp

ecie

s (A

.japo

nicu

s,

L. li

thog

nath

us, P

. com

mer

soni

i, Li

chia

am

ia);

REI

sp

ecie

s do

min

ated

by

both

Myx

us c

apen

sis

and

G.

aest

uaria

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

The

estu

arin

e la

ke s

yste

m s

houl

d co

ntai

n a

dive

rse

avifa

unal

com

mun

ity th

at in

clud

es re

pres

enta

tives

of

all t

he o

rigin

al g

roup

s, a

nd th

at s

usta

ins

the

popu

latio

ns fo

r whi

ch th

e sy

stem

has

acq

uire

d R

AMSA

R s

tatu

s; n

umbe

rs o

f wat

erbi

rds

on th

e en

tire

syst

em, o

ther

than

thos

e th

at h

ave

or a

re

incr

easi

ng re

gion

ally

suc

h as

Egy

ptia

n G

oose

, sh

ould

not

dro

p be

low

40

spec

ies

or b

elow

150

0 bi

rds

for t

hree

con

secu

tive

coun

ts

G15 Coastal

II

K40E

G15-E26

Goukamma Estuary

gxi1

1 B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e M

onth

s


Annual

MM

R/M

AR (%

N

at)

87.5 88.8 87.5 85.7 85.5 87.1 86.9 88.2 87.2 86.5 88.5 88.3 87.5

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20

µg/L

onc

e-of

f.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Syst

em

Turb

idity

Sy

stem

var

iabl

es n

ot to

Tu

rbid

ity >

10 N

TU in

low

flow



96

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

varia

bles

D

isso

lved

ox

ygen

ex

ceed

TPC

s fo

r bio

ta

>5 m

g/L

in e

stua

ry.

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

wat

er

qual

ity a

nd h

abita

t rem

ains

su

itabl

e fo

r bio

ta ty

pica

lly

foun

d in

the

estu

ary

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot >

1.0

µg/

L (m

edia

n).,

bent

hic

mic

roal

gae

not >

11

mg/

m2 (m

edia

n);

Phyt

opla

nkto

n no

t > 2

0 µg

/L a

nd/o

r cel

l den

sity

not

>1

0 00

0 ce

lls/m

l (on

ce-o

ff); P

reve

nt fo

rmat

ion

of

phyt

opla

nkto

n bl

oom

s

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pre

vent

th

e sp

read

of i

nvas

ive

trees

(e.g

. Aca

cia

spp.

) in

the

ripar

ian

zone

.

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%



97

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0 -80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K50B

G15-E27

Knysna Estuary

gxi1

2 B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

cl

ose

to n

atur

al a

s po

ssib

le M

onth

s


Annual

MM

R/M

AR (%

N

at)

87.5 87.6 82.7 83.9 86.1 82.5 84.7 87.1 87.5 86.8 88.3 90.5 86.8

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20

µg/L

onc

e-of

f.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

Turb

idity

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



98

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

wat

er

qual

ity a

nd h

abita

t rem

ains

su

itabl

e fo

r bio

ta ty

pica

lly

foun

d in

the

estu

ary

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

No

furth

er lo

ss to

ext

ent,

dist

ribut

ion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

No

furth

er lo

ss to

the

pres

ent a

rea

(201

4) c

over

ed

by th

e m

acro

phyt

e ha

bita

ts; n

o fu

rther

loss

to th

e di

strib

utio

n of

sen

sitiv

e m

acro

phyt

e ha

bita

ts (e

.g.

salt

mar

sh, s

ubm

erge

d m

acro

phyt

es);

cont

rol/e

limin

ate

inva

sive

pla

nts

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n ric

h po

pula

tions

of t

he m

udpr

awn

Upo

gebi

a af

rican

a on

mud

bank

s in

the

mid

dle

estu

ary

(Zon

es

A an

d B)

; mud

praw

n de

nsity

sho

uld

not d

evia

te fr

om

aver

age

base

line

leve

ls b

y m

ore

than

25%

in e

ach

seas

on; m

aint

ain

rich

inve

rtebr

ate

com

mun

ities

as

soci

ated

with

the

REI

zon

e in

the

uppe

r est

uary

(z

oopl

ankt

on a

nd b

enth

os);

the

dom

inan

t spe

cies

in

the

zone

(zoo

plan

kton

and

ben

thos

) sho

uld

not

devi

ate

from

ave

rage

bas

elin

e le

vels

by

mor

e th

an

40%

in e

ach

seas

on



99

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies ;

REI

spe

cies

dom

inat

ed b

y bo

th M

yxus

cap

ensi

s an

d G

. aes

tuar

ia

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Estu

ary

shou

ld c

onta

in a

div

erse

avi

faun

al

com

mun

ity th

at in

clud

es re

pres

enta

tives

of a

ll th

e or

igin

al g

roup

s. S

altm

arsh

/wet

land

s in

the

flood

plai

n sh

ould

be

rich

in b

irdlif

e. In

terti

dal a

reas

sho

uld

have

a

good

den

sity

and

div

ersi

ty o

f bot

h la

rger

and

sm

alle

r wad

ers;

num

bers

of w

ater

bird

s on

the

entir

e sy

stem

sho

uld

not d

rop

belo

w 3

5 sp

ecie

s or

bel

ow

2000

bird

s fo

r thr

ee c

onse

cutiv

e co

unts

G15 Coastal

II

K60G

G15-E28

Noetsie Estuary

gxi1

3 B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

93.5 93.4 90.7 87.1 85.5 89.8 92.1 94.0 93.0 92.8 94.3 94.3 92.5

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20

µg/L

onc

e-of

f.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

10 <

Sal

inity

<40

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



100

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot >

1.0

µg/

L (m

edia

n).,

bent

hic

mic

roal

gae

not >

11

mg/

m2 (m

edia

n);

Phyt

opla

nkto

n no

t > 2

0 µg

/L a

nd/o

r cel

l den

sity

not

>1

0 00

0 ce

lls/m

l (on

ce-o

ff); P

reve

nt fo

rmat

ion

of

phyt

opla

nkto

n bl

oom

s

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

; pre

vent

an

incr

ease

in n

utrie

nt in

put l

eadi

ng to

mac

roal

gal

bloo

ms;

con

trol t

he s

prea

d of

inva

sive

pla

nts

in th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%



101

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; Cat

egor

y IIa

ob

ligat

e de

pend

ents

sho

uld

be w

ell r

epre

sent

ed b

y la

rge

expl

oite

d sp

ecie

s; R

EI s

peci

es d

omin

ated

by

both

Myx

us c

apen

sis

and

G. a

estu

aria

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K60G

G15-E29

Piesang Estuary

gxi1

4 C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n at

leas

t pre

sent

-da

y ba

se fl

ows

Mon

ths


Annual

MM

R/M

AR (%

N

at)

71.4 77.2 69.5 68.8 63.6 69.2 70.9 81.5 68.1 66.8 74.7 86.1 73.8

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20

µg/L

onc

e-of

f.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

5 <

Salin

ity <

40

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



102

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

(ree

ds

and

sedg

es c

urre

ntly

cov

er 3

.14

ha, s

ubm

erge

d m

acro

phyt

es a

nd s

alt m

arsh

pre

sent

); pr

even

t the

sp

read

of r

eeds

into

ope

n w

ater

; pre

vent

an

incr

ease

in

nut

rient

s an

d m

acro

alga

l blo

oms;

pre

vent

the

spre

ad o

f inv

asiv

e tre

es (e

.g. A

caci

a sp

p.) i

n th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%



103

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K60G

G15-E30

Keurbooms Estuary

gxi1

5 A

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e as

cl

ose

to n

atur

al a

s po

ssib

le M

onth

s


Annual

MM

R/M

AR (%

N

at)

90.6 90.5 88.8 85.3 83.0 85.5 89.3 92.0 92.3 91.8 92.8 91.8 90.0

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20 µ

g/L

once

-off.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity >

10 a

t the

top

of th

e es

tuar

y in

the

Keur

boom

s an

d/or

Bito

u Ar

m, a

vera

ge s

alin

ity >

20

alon

g th

e le

ngth

of t

he s

yste

m

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



104

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Aver

age

tidal

am

plitu

de n

ear t

he m

outh

dur

ing

low

flo

ws

(sum

mer

) mus

t not

cha

nge

by >

10%

from

es

tabl

ishe

d ba

selin

e.

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e to

mai

ntai

n na

tura

l bat

hym

etry

and

the

sedi

men

t cha

ract

eris

tics

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n th

e di

strib

utio

n of

sen

sitiv

e m

acro

phyt

e ha

bita

ts (e

.g. s

alt m

arsh

, sub

mer

ged

mac

roph

ytes

, re

eds

and

sedg

es) (

of s

peci

al im

porta

nce

are

the

subm

erge

d m

acro

phyt

es in

the

Bito

u Ar

ms

as

habi

tat f

or th

e en

dang

ered

sea

hors

es H

. cap

ensi

s);

reha

bilit

ate

the

Bito

u w

etla

nds

by re

mov

ing

wei

rs,

berm

s, o

ld b

ridge

s; li

mit

the

spre

ad o

f inv

asiv

e pl

ants

; mai

ntai

n th

e in

tegr

ity o

f the

ripa

rian

zone

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Mai

ntai

n hi

gh b

iom

ass

and

dive

rsity

of b

enth

ic

inve

rtebr

ates

in th

e la

goon

are

a in

the

low

er e

stua

ry;

mai

ntai

n ric

h in

verte

brat

e co

mm

uniti

es a

ssoc

iate

d w

ith th

e R

EI z

one

in th

e up

per e

stua

ry (z

oopl

ankt

on

and

bent

hos)

.



105

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0-80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K70A

G15-E31

Matjies Estuary

gxi1

6 C

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

73.9 73.8 69.1 68.0 65.0 67.9 67.9 68.4 65.8 66.8 71.6 74.1 70.5

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20 µ

g/L

once

-off.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

Salin

ity >

20

for m

ore

than

20%

of t

he ti

me

(indi

cativ

e of

flow

redu

ctio

n), a

vera

ge S

alin

ity <

5 fo

r m

ore

than

20%

of t

he ti

me

(indi

cativ

e of

ext

ende

d cl

osur

e).

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



106

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

, pre

vent

an

incr

ease

in n

utrie

nt in

put l

eadi

ng to

mac

roal

gal

bloo

ms,

con

trol t

he s

prea

d of

inva

sive

pla

nts

in th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

a lly

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.



107

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K70A

G15-E32

Sout (Oos) Estuary

gxi1

7 A

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

86.7 86.8 86.0 83.2 81.7 83.1 84.2 86.1 85.6 84.6 85.8 86.8 85.6

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20 µ

g/L

once

-off.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity <

10 a

t the

hea

d of

the

estu

ary

(exp

ecte

d av

erag

e ra

nge

5 - 1

0 fo

r mos

t of t

he

syst

em)

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Mou

th m

ust r

emai

n pe

rman

ently

ope

n

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e



108

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

, pre

vent

an

incr

ease

in n

utrie

nt in

put l

eadi

ng to

mac

roal

gal

bloo

ms,

con

trol t

he s

prea

d of

inva

sive

pla

nts

in th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K70A

G15-E33

Groot (Wes) Estuary

gxi2

3 B

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

87.9 88.0 87.2 84.3 82.7 84.1 85.3 87.3 86.7 85.7 86.9 87.9 86.7

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20 µ

g/L

once

-off.



109

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity <

10 a

t the

hea

d of

the

estu

ary

(exp

ecte

d av

erag

e ra

nge

5 - 1

0 fo

r mos

t of t

he

syst

em)

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s

Ente

roco

cci

Con

cent

ratio

ns o

f w

ater

born

e pa

thog

ens

shou

ld b

e m

aint

aine

d in

an

Acce

ptab

le c

ateg

ory

for f

ull

cont

act r

ecre

atio

n

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)

Esch

eric

hia

coli

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

Mai

ntai

n co

nnec

tivity

with

m

arin

e en

viro

nmen

t at a

le

vel t

hat e

nsur

es w

ater

qu

ality

and

hab

itat r

emai

ns

suita

ble

for b

iota

typi

cally

fo

und

in th

e es

tuar

y

Clo

sed

mou

th s

tate

sho

uld

not i

ncre

ase

by >

10%

fro

m e

stab

lishe

d ba

selin

e

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

3.5

μg/ℓ

(med

ian)

, phy

topl

ankt

on n

ot to

exc

eed

20 μ

g/ℓ a

nd/o

r cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (on

ce-o

ff); b

enth

ic m

icro

alga

e no

t to

exce

ed 2

3 m

g/m

2 (med

ian)

; pre

vent

form

atio

n of

ph

ytop

lank

ton

bloo

ms

Mac

roph

ytes

Exte

nt,

dist

ribut

ion

and

richn

ess

of

mac

roph

ytes

Mai

ntai

n ex

tent

, dis

tribu

tion

and

richn

ess

of

mac

roph

yte

grou

ps, l

imit

colo

nisa

tion/

spre

ad o

f the

EF

Z by

alie

n sp

ecie

s

Mai

ntai

n di

strib

utio

n of

mac

roph

yte

habi

tats

, pre

vent

an

incr

ease

in n

utrie

nt in

put l

eadi

ng to

mac

roal

gal

bloo

ms,

con

trol t

he s

prea

d of

inva

sive

pla

nts

in th

e rip

aria

n zo

ne

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%



110

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Fish

ass

embl

age

shou

ld c

ompr

ise

the

5 es

tuar

ine

asso

ciat

ion

cate

gorie

s in

sim

ilar p

ropo

rtion

s (d

iver

sity

and

abu

ndan

ce) t

o th

at u

nder

the

refe

renc

e (s

ee 2

015

EWR

repo

rt); n

umer

ical

ly

asse

mbl

age

shou

ld c

ompr

ise:

Ia e

stua

rine

resi

dent

s (5

0 -80

% o

f tot

al a

bund

ance

), Ib

mar

ine

and

estu

arin

e br

eede

rs (1

0-20

%),

IIa o

blig

ate

estu

arin

e-de

pend

ent (

10-2

0%),

IIb e

stua

rine

asso

ciat

ed

spec

ies

(5-1

5%),

IIc m

arin

e op

portu

nist

s (2

0-80

%),

III m

arin

e va

gran

ts (n

ot m

ore

than

5%

), IV

in

dige

nous

fish

(1-5

%),

V ca

tadr

omou

s sp

ecie

s (1

-5%

); C

ateg

ory

Ia s

peci

es s

houl

d co

ntai

n vi

able

po

pula

tions

of a

t lea

st 4

spe

cies

; C

ateg

ory

IIa

oblig

ate

depe

nden

ts s

houl

d be

wel

l rep

rese

nted

by

larg

e ex

ploi

ted

spec

ies ;

REI

spe

cies

dom

inat

ed b

y bo

th M

yxus

cap

ensi

s an

d G

. aes

tuar

ia

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts

G15 Coastal

II

K70B

G15-E34

Bloukrans Estuary

gxi1

8 A

Qua

ntity

Fl

ow

MM

R/M

AR

(% N

at)

Mai

ntai

n flo

w re

gim

e (s

mal

l sy

stem

nee

ds m

ost f

low

s)

Mon

ths


Annual

MM

R/M

AR (%

N

at)

98.7 99.0 98.3 96.7 96.8 97.1 97.2 98.1 97.6 97.7 98.2 98.9 98.0

Qua

lity

Nut

rient

s

DIN

In

orga

nic

nutri

ent

conc

entra

tions

not

to

exce

ed T

PCs

for

mac

roph

ytes

and

m

icro

alga

e

DIN

not

>10

0 µg

/L o

nce-

off.

DIP

D

IP n

ot >

20 µ

g/L

once

-off.

Salin

ity

Salin

ity

Salin

ity d

istri

butio

n no

t to

exce

ed T

PCs

for f

ish,

in

verte

brat

es, m

acro

phyt

es

and

mic

roal

gae

Aver

age

salin

ity <

10 a

t the

hea

d of

the

estu

ary

(exp

ecte

d av

erag

e ra

nge

5 - 1

0 fo

r mos

t of t

he

syst

em)

Syst

em

varia

bles

Turb

idity

Sy

stem

var

iabl

es n

ot to

ex

ceed

TPC

s fo

r bio

ta

>10

NTU

in lo

w fl

ow

Dis

solv

ed

oxyg

en

>5 m

g/L

in e

stua

ry.

Path

ogen

s En

tero

cocc

i C

once

ntra

tions

of

≤185

Ent

eroc

occi

/100

ml)

(90th

per

cent

ile)



111

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU Re

sour

ce

Nam

e Bi

ophy

sica

l No

de N

ame

TEC

Com

pone

nt

Sub-

com

pone

nt

Indi

cato

r RQ

O N

arra

tive

RQO

Num

eric

Esch

eric

hia

coli

wat

erbo

rne

path

ogen

s sh

ould

be

mai

ntai

ned

in a

n Ac

cept

able

cat

egor

y fo

r ful

l co

ntac

t rec

reat

ion

≤500

E. c

oli/1

00 m

l (90

th p

erce

ntile

)

Hab

itat

Hyd

rody

nam

ics

Mou

th s

tate

M

aint

ain

conn

ectiv

ity w

ith

mar

ine

envi

ronm

ent a

t a

leve

l tha

t ens

ures

wat

er

qual

ity a

nd h

abita

t rem

ains

su

itabl

e fo

r bio

ta ty

pica

lly

foun

d in

the

estu

ary

Estu

ary

mou

th p

erm

anen

tly o

pen

Tida

l var

iatio

n Av

erag

e tid

al a

mpl

itude

nea

r the

mou

th d

urin

g lo

w

flow

s (s

umm

er) m

ust n

ot c

hang

e by

>10

% fr

om

esta

blis

hed

base

line.

Sedi

men

t

Sedi

men

t ch

arac

teris

tics,

C

hann

el

shap

e/si

ze

Floo

d re

gim

e is

suf

ficie

nt to

m

aint

ain

natu

ral

bath

ymet

ry a

nd s

edim

ent

char

acte

ristic

s

Cha

nnel

sha

pe/s

ize,

sed

imen

t gra

in s

ize

and

orga

nic

mat

ter m

ust n

ot c

hang

e by

>30

% fr

om e

stab

lishe

d ba

selin

e

Biot

a

Mic

roal

gae

Biom

ass

and

com

mun

ity

com

posi

tion

of

phyt

opla

nkto

n an

d be

nthi

c m

icro

alga

e co

mm

unity

Mai

ntai

n th

e co

mpo

sitio

n an

d ric

hnes

s of

ph

ytop

lank

ton

and

bent

hic

mic

roal

gae

grou

ps a

nd

med

ium

-low

bio

mas

s

Mai

ntai

n lo

w/m

edia

n ph

ytop

lank

ton/

bent

hic

mic

roal

gae

biom

ass:

phy

topl

ankt

on n

ot to

exc

eed

1 μg

/ℓ (m

edia

n), p

hyto

plan

kton

not

to e

xcee

d 20

μg/

ℓ an

d/or

cel

l den

sity

not

to e

xcee

d 10

000

cel

ls/m

l (o

nce-

off);

ben

thic

mic

roal

gae

not t

o ex

ceed

11

mg/

m2 (m

edia

n); p

reve

nt fo

rmat

ion

of p

hyto

plan

kton

bl

oom

s

Inve

rtebr

ates

Mac

rofa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

ben

thic

m

acro

faun

a an

d zo

opla

nkto

n

Esta

blis

h pr

esen

ce/a

bsen

ce o

f san

d pr

awn

Cal

lichi

rus

krau

ssi o

n sa

nd b

anks

in lo

wer

est

uary

, es

tabl

ish

pres

ence

/abs

ence

of t

he c

opep

od

Pseu

dodi

apto

mus

hes

sei o

r est

uarin

e co

ngen

eric

in

the

zoop

lank

ton

of th

e es

tuar

y, p

opul

atio

ns o

f the

se

spec

ies

shou

ld n

ot d

evia

te fr

om a

vera

ge b

asel

ines

(a

s de

term

ined

in fi

rst t

hree

vis

its) b

y m

ore

30%

Fish

Fish

co

mm

unity

co

mpo

sitio

n,

abun

danc

e an

d ric

hnes

s

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt g

roup

s of

fish

, pr

even

t co

loni

satio

n/in

crea

se o

f al

ien

spec

ies

Mai

ntai

n fis

h as

sem

blag

e th

at in

clud

es a

t lea

st 2

es

tuar

ine

bree

ding

spe

cies

(Cat

egor

y I),

3 e

stua

ry

depe

nden

t mar

ine

spec

ies

(Cat

egor

y IIa

& II

b) a

nd 1

in

dige

nous

cat

adro

mou

s sp

ecie

s (C

ateg

ory

V);

estu

arin

e re

side

nts

shou

ld d

omin

ate

num

eric

ally

, but

th

e pr

opor

tion

of e

stua

ry d

epen

dent

mar

ine

spec

ies

(bas

ed o

n ab

unda

nce)

sho

uld

not f

all b

elow

2%

.

Bird

s

Avifa

una

com

mun

ity

com

posi

tion,

ab

unda

nce

and

richn

ess

Mai

ntai

n co

mpo

sitio

n,

richn

ess

and

abun

danc

e of

di

ffere

nt a

vifa

una

grou

ps

Mai

ntai

n po

pula

tion

of o

rigin

al g

roup

s of

bird

s pr

esen

t on

the

estu

ary;

num

ber o

f bird

s in

any

gr

oup,

oth

er th

an s

peci

es th

at a

re in

crea

sing

re

gion

ally

suc

h as

Egy

ptia

n ge

ese,

sho

uld

not d

rop

belo

w th

e ba

selin

e m

edia

n (d

eter

min

ed b

y pa

st d

ata

and

or in

itial

sur

veys

) num

ber o

f spe

cies

and

/or b

irds

coun

ted

for t

hree

con

secu

tive

sum

mer

or w

inte

r co

unts



112

Tabl

e 27

: Res

ourc

e Q

ualit

y O

bjec

tives

for G

ROUN

DWAT

ER in

prio

rity

Reso

urce

Uni

ts in

the

Bree

de-G

ourit

z W

ater

Man

agem

ent A

rea

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

A1

Upp

er B

reed

e Tr

ibut

arie

s II

H10

A, H

10B,

H10

C

BB-1

Gro

undw

ater

(all)

Q

uant

ity

Abst

ract

ion

Seas

onal

ab

stra

ctio

n: w

ater

le

vel r

ecov

ers

from

ab

stra

ctio

n im

pact

du

ring

wet

sea

son,

un

der c

onsi

dera

tion

of c

limat

e ch

ange

an

d dr

ough

t cyc

les.

Pe

rman

ent

abst

ract

ion:

wat

er

leve

l dec

line

stab

ilises

und

er

cons

ider

atio

n of

aq

uife

r res

pons

e tim

e.

Gro

undw

ater

use

sho

uld

be

sust

aina

ble

for a

ll us

ers

and

the

envi

ronm

ent

n/a

H10

L, H

10F,

H10

G, H

10J B

B-3

A3 B

reed

e W

orki

ng

Trib

utar

ies

III

H20

A, H

20B,

H20

C,

H20

F BB

-2

H40

B BB

-4

H20

H, H

10H

, H40

C

BB-5

H

30B

BB-6

A3

Bre

ede

Wor

king

Tr

ibut

arie

s III

H

40J

BB-7

A2

MiddleBreede

Re

nosterveld

III

H

40K

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

B5 O

verb

erg

Wes

t II

G40

C, G

40D

BO

-1

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E

E8 T

ouw

s III

J1

2C, J

12D

G

Gr-1

C6

Gam

ka B

uffe

ls

II

J11E

G

Gr-3

J2

4B

GG

a-1

J21A

, J21

B, J

23A

GG

a-2a

, 2b

and

2c

D7

Gou

ritz-

Olif

ants

III

J35B

G

O-4

F1

3 Lo

wer

Gou

ritz

II J4

0C, J

40D

G

Go-

1 I1

8 H

esse

qua

III

H90

E G

Go-

2 G1

5Co

astal

II K4

0D

GC

-2

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

Gro

undw

ater

(all)

Q

uant

ity

Gro

undw

ater

le

vel

Gro

undw

ater

leve

l

Min

imum

wat

er le

vel i

n ab

stra

ctio

n bo

reho

les

with

in

2.5k

m fr

om th

e oc

ean

to

avoi

d sa

line

intru

sion

>1 m

amsl

F1

0 O

verb

erg

East

R

enos

terv

eld

II G

50B

BO-3

H

17 O

verb

erg

East

Fy

nbos

II

G50

D, G

50E

G15Co

astal

II K4

0D

GC

-2

Gro

undw

ater

(Coa

stal

C

enoz

oic

Dep

osits

) >0

.5 m

amsl



113

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

A3

Breed

eWorkin

gTributaries

III

H20

H, H

10H

, H40

C

BB-5

G

roun

dwat

er (C

oast

al

Cen

ozoi

c D

epos

its)

Qua

ntity

D

isch

arge

Rel

ativ

e w

ater

le

vels

bet

wee

n gr

ound

wat

er a

nd

surfa

ce w

ater

(in

mam

sl)

The

natu

ral g

radi

ent

betw

een

grou

ndw

ater

and

su

rface

wat

er s

houl

d be

m

aint

aine

d

n/a

G15Co

astal

II K4

0D

GC

-2

K70A

G

C-3

A3

Bre

ede

Wor

king

Tr

ibut

arie

s III

H

40J

BB-7

Gro

undw

ater

(s

uper

ficia

l aqu

ifers

)

A2M

iddleBreede

Re

nosterveld

III

H

40K

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

B5 O

verb

erg

Wes

t II

G40

C, G

40D

BO

-1

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E

F13

Low

er G

ourit

z II

J40C

, J40

D

GG

o-1

Gro

undw

ater

(all)

G1

5Co

astal

II K2

0A

GC

-1

A1 U

pper

Bre

ede

Trib

utar

ies

II H

10L,

H10

F, H

10G

, H10

J BB-

3

Gro

undw

ater

(all)

Q

uant

ity

Dis

char

ge

Buffe

r zon

es

No

grou

ndw

ater

abs

tract

ion

arou

nd w

etla

nd a

nd ri

ver

FEPA

s in

acc

orda

nce

with

th

e im

plem

enta

tion

man

ual

for F

EPAs

.

250m

A3 B

reed

e W

orki

ng

Trib

utar

ies

III

H40

J BB

-7

A2M

iddleBreede

Re

nosterveld

III

H

40K

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E

B5 O

verb

erg

Wes

t II

G40

C, G

40D

BO

-1

C6

Gam

ka B

uffe

ls

II J1

1E, J

21A,

J21

B, J

23A

GG

r-3

GG

a-2a

, 2b

and

2c

F13

Low

er G

ourit

z II

J40C

, J40

D

GG

o-1

II K2

0A

GC

-1



114

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

G1

5Co

astal

K70A

G

C-3

A3

Bre

ede

Wor

king

Tr

ibut

arie

s III

H

20H

, H10

H, H

40C

BB

-5

Gro

undw

ater

(Coa

stal

C

enoz

oic

Dep

osits

) G1

5Co

astal

II K4

0D

GC

-2

A1 U

pper

Bre

ede

Trib

utar

ies

II H

10L,

H10

F, H

10G

, H10

J BB-

3

Gro

undw

ater

(all)

Q

uant

ity

Low

flow

in ri

ver

Mai

ntai

n (g

roun

dwat

er

com

pone

nt o

f) th

e lo

w fl

ow

requ

irem

ents

in th

e riv

er

Com

plia

nce

with

th

e lo

w fl

ow

requ

irem

ents

in th

e riv

er (a

s pe

r riv

erin

e R

QO

)

Mai

nten

ance

low

flow

re

quire

men

ts: 5

6.12

5Mm

3 /a

(12.

90%

MAR

) at H

1H00

1;

30.2

15M

m3 /a

(28.

63%

MAR

) at

H1H

018

n/a

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

Mai

nten

ance

low

flow

re

quire

men

ts: 1

2.56

7Mm

3/a

(28.

63%

MAR

) at N

vii1

0 n/

a

B5 O

verb

erg

Wes

t II

G40

C, G

40D

BO

-1

Mai

nten

ance

low

flow

re

quire

men

ts: 1

2.66

9Mm

3/a

(31.

79%

MAR

) at P

iii1;

54.2

60M

m3/

a (2

6.26

%M

AR)

at G

4H03

0; 7

7.11

1Mm

3/a

(30.

79%

MAR

) at G

4H00

7

n/a

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B

BO-3

Mai

nten

ance

low

flow

re

quire

men

ts: 0

.490

Mm

3/a

(3.9

3%M

AR) a

t Ni4

; 2.

067M

m3/

a (1

3.40

%M

AR)

at G

5H00

3.

n/a

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E

A1 U

pper

Bre

ede

Trib

utar

ies

II H

10A,

H10

B, H

10C

BB

-1

Gro

undw

ater

(all)

Q

ualit

y Pa

thog

ens

E-co

li

Gro

undw

ater

sho

uld

be fi

t fo

r dom

estic

use

afte

r tre

atm

ent;

and

grou

ndw

ater

qu

ality

sha

ll no

t sho

w a

de

terio

ratin

g tre

nd fr

om

natu

ral b

ackg

roun

d

0 co

unts

/ 10

0ml

H10

L, H

10F,

H10

G, H

10J B

B-3

A3 B

reed

e W

orki

ng

Trib

utar

ies

III

H20

A, H

20B,

H20

C,

H20

F BB

-2

H40

B BB

-4

H20

H, H

10H

, H40

C

BB-5

H

30B

BB-6

A3

Bre

ede

Wor

king

Tr

ibut

arie

s III

H

40J

BB-7

A2

MiddleBreede

Re

nosterveld

III

H

40K

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

B5 O

verb

erg

Wes

t II

G40

C, G

40D

BO

-1

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3



115

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

H

17 O

verb

erg

East

Fy

nbos

II

G50

D, G

50E

E8 T

ouw

s III

J1

2C, J

12D

G

Gr-1

C6

Gam

ka B

uffe

ls

II

J11E

G

Gr-3

J2

4B

GG

a-1

J21A

, J21

B, J

23A

GG

a-2a

, 2b

and

2c

D7

Gou

ritz-

Olif

ants

III

J35B

G

O-4

F1

3 Lo

wer

Gou

ritz

II J4

0C, J

40D

G

Go-

1 I1

8 H

esse

qua

III

H90

E G

Go-

2 G1

5Co

astal

II K4

0D

GC

-2

A1 U

pper

Bre

ede

Trib

utar

ies

II H

10A,

H10

B, H

10C

BB

-1

Gro

undw

ater

(all)

Q

ualit

y Pa

thog

ens

Tota

l Col

iform

Gro

undw

ater

sho

uld

be fi

t fo

r dom

estic

use

afte

r tre

atm

ent;

and

grou

ndw

ater

qu

ality

sha

ll no

t sho

w a

de

terio

ratin

g tre

nd fr

om

natu

ral b

ackg

roun

d

<10

coun

ts /

100m

l

H10

L, H

10F,

H10

G, H

10J B

B-3

A3 B

reed

e W

orki

ng

Trib

utar

ies

III

H20

A, H

20B,

H20

C,

H20

F BB

-2

H40

B BB

-4

H20

H, H

10H

, H40

C

BB-5

H

30B

BB-6

A3

Bre

ede

Wor

king

Tr

ibut

arie

s III

H

40J

BB-7

A2

MiddleBreede

Re

nosterveld

III

H

40K

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

B5 O

verb

erg

Wes

t II

G40

C, G

40D

BO

-1

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E

E8 T

ouw

s III

J1

2C, J

12D

G

Gr-1

C6

Gam

ka B

uffe

ls

II

J11E

G

Gr-3

J2

4B

GG

a-1

J21A

, J21

B, J

23A

GG

a-2a

, 2b

and

2c

D7

Gou

ritz-

Olif

ants

III

J35B

G

O-4

F1

3 Lo

wer

Gou

ritz

II J4

0C, J

40D

G

Go-

1 I1

8 H

esse

qua

III

H90

E G

Go-

2 G1

5Co

astal

II K4

0D

GC

-2



116

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

A1 U

pper

Bre

ede

Trib

utar

ies

II

H10

A, H

10B,

H10

C

BB-1

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

)

Gro

undw

ater

sho

uld

be fi

t fo

r dom

estic

use

afte

r tre

atm

ent;

and

grou

ndw

ater

qu

ality

sha

ll no

t sho

w a

de

terio

ratin

g tre

nd fr

om

natu

ral b

ackg

roun

d

<6.8

mg/

l

Salts

EC

<3

11 m

S/m

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<2.4

mg/

l Sa

lts

EC

<236

mS/

m

Gro

undw

ater

(N

ardo

uw G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <4

.4 m

g/l

Salts

EC

<1

19 m

S/m

H10

F, H

10G

, H10

J, H

10L

BB-3

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <9

.6 m

g/l

Salts

EC

<7

3 m

S/m

Gro

undw

ater

(Tab

le

Mou

ntai

n G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <1

.8 m

g/l

Salts

EC

<1

09 m

S/m

A3 B

reed

e W

orki

ng

Trib

utar

ies

III

H20

A, H

20B,

H20

C,

H20

F BB

-2

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <1

1.0

mg/

l

Salts

EC

<1

68 m

S/m

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<1.8

mg/

l Sa

lts

EC

<329

mS/

m

Gro

undw

ater

(Tab

le

Mou

ntai

n G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.7 m

g/l

Salts

EC

<6

3 m

S/m

H10

H, H

20H

, H40

C

BB-5

G

roun

dwat

er

(Cen

ozoi

c co

asta

l de

posi

ts)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.1

mg/

l

Salts

EC

<5

91 m

S/m

H30

B BB

-6

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <9

.8 m

g/l

Salts

EC

<1

70 m

S/m

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.6

mg/

l Sa

lts

EC

<589

mS/

m

Gro

undw

ater

(N

ardo

uw G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <4

.4 m

g/l

Salts

EC

<1

19 m

S/m

H40

J, H

40K

BB-7

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <1

0 m

g/l

Salts

EC

<2

80 m

S/m

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.6

mg/

l Sa

lts

EC

<741

mS/

m

Gro

undw

ater

(Tab

le

Mou

ntai

n G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.8 m

g/l

Salts

EC

<1

17 m

S/m

B4 R

iver

sond

eren

d Th

eew

ater

s III

H

60A,

H60

B, H

60C

BR

-1

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <1

0 m

g/l

Salts

EC

<2

80 m

S/m

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.6

mg/

l Sa

lts

EC

<741

mS/

m

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.8

mg/

l



117

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

G

roun

dwat

er (T

able

M

ount

ain

Gro

up)

Salts

EC

<7

0 m

S/m

B5 O

verb

erg

Wes

t II

G40

A, G

40C

, G40

D

BO-1

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.6

mg/

l Sa

lts

EC

<589

mS/

m

Gro

undw

ater

(Tab

le

Mou

ntai

n G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.8 m

g/l

Salts

EC

<1

17 m

S/m

H16

Ove

rber

g W

est

Coa

stal

II

G40

H

BO-2

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <9

.8 m

g/l

Salts

EC

<2

80 m

S/m

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.6

mg/

l Sa

lts

EC

<589

mS/

m

Gro

undw

ater

(Tab

le

Mou

ntai

n G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.8 m

g/l

Salts

EC

<1

17 m

S/m

F1

0 O

verb

erg

East

R

enos

terv

eld

II G

50B

BO-3

G

roun

dwat

er

(Cen

ozoi

c co

asta

l de

posi

ts)

Qua

lity

Nut

rient

s N

O3

(as

N)

<10

mg/

l

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E Sa

lts

EC

<280

mS/

m

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<3.6

mg/

l

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E Sa

lts

EC

<741

mS/

m

F10

Ove

rber

g Ea

st

Ren

oste

rvel

d II

G50

B BO

-3

Gro

undw

ater

(Tab

le

Mou

ntai

n G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.8 m

g/l

H17

Ove

rber

g Ea

st

Fynb

os

II G

50D

, G50

E Sa

lts

EC

<117

mS/

m

C6

Gam

ka B

uffe

ls

II

J11E

G

Gr-3

G

roun

dwat

er (a

ll)

Qua

lity

Nut

rient

s N

O3

(as

N)

<11.

7 m

g/l

Salts

SO

4 <

600

mg/

l Sa

lts

EC

<231

mS/

m

J24B

G

Ga-

1 G

roun

dwat

er

(Bea

ufor

t Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<12.

0 m

g/l

Salts

SO

4 <

237

mg/

l Sa

lts

EC

<226

mS/

m

J21A

, J21

B, J

21D

, J23

A G

Ga-

2a,

2b a

nd 2

c

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <1

5.8

mg/

l Sa

lts

SO4

<525

mg/

l Sa

lts

EC

<310

mS/

m

Gro

undw

ater

(B

eauf

ort G

roup

, Ka

roo

Supe

rgro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<15.

9 m

g/l

Salts

SO

4 <6

34 m

g/l

Salts

EC

<3

67 m

S/m

E8 T

ouw

s III

J1

2C, J

12D

G

Gr-1

Gro

undw

ater

(C

enoz

oic

coas

tal

depo

sits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <9

.8 m

g/l

Salts

EC

<1

70 m

S/m

Gro

undw

ater

(W

itteb

erg

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<11.

0 m

g/l

Salts

EC

<4

20 m

S/m



118

IUA

Clas

s Q

uate

rnar

y Ca

tchm

ent

RU

Reso

urce

Nam

e Co

mpo

nent

Sub

Com

pone

nt In

dica

tor/

Mea

sure

RQ

O N

arra

tive

RQO

Num

eric

G

roun

dwat

er

(Bok

keve

ld G

roup

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.6 m

g/l

Salts

EC

<5

89 m

S/m

D7

Gou

ritz-

Olif

ants

III

J35B

G

O-4

Gro

undw

ater

(B

okke

veld

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<11.

0 m

g/l

Salts

EC

<5

89 m

S/m

G

roun

dwat

er (T

able

M

ount

ain

Gro

up)

Qua

lity

Nut

rient

s N

O3

(as

N)

<11.

0 m

g/l

Salts

EC

<1

70 m

S/m

F13

Low

er G

ourit

z II

J40C

, J40

D

GG

o-1

Gro

undw

ater

(Coa

stal

C

enoz

oic

Dep

osits

) Q

ualit

y N

utrie

nts

NO

3 (a

s N

) <3

.3 m

g/l

Salts

EC

<1

70 m

S/m

I18

Hes

sequ

a III

H

90E

GG

o-2a

an

d 2b

G

roun

dwat

er (C

oast

al

Cen

ozoi

c D

epos

its)

Qua

lity

Nut

rient

s N

O3

(as

N)

<4.5

mg/

l Sa

lts

EC

<316

mS/

m

G15

Coa

stal

II

K40D

G

C-2

G

roun

dwat

er (C

oast

al

Cen

ozoi

c D

epos

its)

Qua

lity

Nut

rient

s N

O3

(as

N)

<11.

0 m

g/l

Salts

EC

<1

70 m

S/m


Documents

DATE: 23 (D i zoit - cer.org.za · DATE: 23 (D i zoit 290 No. 42053 GOVERNMENT GAZETTE, 23 NOVEMBER 2018 DEPARTMENT OF WATER AND SANITATION NO. 1298 23 NOVEMBER 2018 1298 National