North East Region

River South Esk SAC: Grade 2

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

2.84 2,027,900 5,757,312 83.79 80.6 86.08 77.58 67.24 79.06 2a Figures presented are median values

1

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

50

100

150

200

0

50

100

150

200

Month

Rep

orte

d ca

tch

Monthly flow data

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov

−1.0

−0.5

0.0

0.5

−1.0

−0.5

0.0

0.5

Month

Adj

uste

d F

low

2

Monthly stock estimates (out of season in black)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

500

1,000

1,500

0

500

1,000

1,500

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

2,000

4,000

6,000

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

4

Monthly number of spawning females

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

500

1,000

0

500

1,000

0

500

1,000

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

5

Monthly number of eggs

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

2,000,000

4,000,000

0

2,000,000

4,000,000

0

2,000,000

4,000,000

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

5,000,000

10,000,000

15,000,000

20,000,000

25,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

6

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 2,281,060 square meters of known salmon habitat in the River South EskSAC and a further 23,422 square meters where salmon may be present.

Egg requirement

0

10,000,000

20,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 83.792015 80.602016 86.082017 77.582018 67.24

7

0

10,000,000

20,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

8

River North Esk: Grade 1

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

8.27 2,310,600 19,104,783 98.85 99.48 98.97 96.91 43.57 87.56 1a Figures presented are median values

9

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

100

200

300

0

100

200

300

Month

Rep

orte

d ca

tch

Monthly flow data

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov

−0.5

0.0

0.5

−0.5

0.0

0.5

Month

Adj

uste

d F

low

10

Monthly stock estimates (out of season in black)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov

0

1,000

2,000

3,000

0

1,000

2,000

3,000

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

3,000

6,000

9,000

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

11

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

12

Monthly number of spawning females

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

500

1,000

1,500

0

500

1,000

1,500

0

500

1,000

1,500

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

13

Monthly number of eggs

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

2,000,000

4,000,000

6,000,000

0

2,000,000

4,000,000

6,000,000

0

2,000,000

4,000,000

6,000,000

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

10,000,000

20,000,000

30,000,000

40,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

14

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 2,589,901 square meters of known salmon habitat in the River North Esk anda further 35,777 square meters where salmon may be present.

Egg requirement

0

10,000,000

20,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 98.852015 99.482016 98.972017 96.912018 43.57

15

0

10,000,000

20,000,000

30,000,000

40,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

16

Bervie Water: Grade 3

Detailed information on catches is not publicly available for this assessment area

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

1.14 226,900 259,409 1.83 6.16 8.93 36.76 4.02 11.54 3a Figures presented are median values

17

1. Converting Reported Catches to Numbers of Returning Salmon

Annual estimated stock

0

20

40

60

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

18

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

Total annual egg numbers

0

50,000

100,000

150,000

200,000

250,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

19

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 247,541 square meters of known salmon habitat in the Bervie Water and afurther 10,307 square meters where salmon may be present.

Egg requirement

0

1,000,000

2,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 1.832015 6.162016 8.932017 36.762018 4.02

20

0

1,000,000

2,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

21

Carron Water: Grade 3

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

2.68 57,300 153,358 0 0 0 0 0 0 3a Figures presented are median values

22

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2016 2017

2014 2015

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

0

0

0

0

0

0

0

0

0

0

Month

Rep

orte

d ca

tch

Monthly flow data

2016 2017

2014 2015

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

−0.5

0.0

0.5

−0.5

0.0

0.5

Month

Adj

uste

d F

low

23

Monthly stock estimates (out of season in black)

2016 2017

2014 2015

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

0

0

0

0

0

0

0

0

0

0

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

0

0

0

0

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

24

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2016 2017

2014 2015

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

25

Monthly number of spawning females

2014 2015 2016 2017

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2016 2017

2014 2015

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

26

Monthly number of eggs

2014 2015 2016 2017

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

0

0

0

0

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

27

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 48,140 square meters of known salmon habitat in the Carron Water and afurther 16,935 square meters where salmon may be present.

Egg requirement

0

200,000

400,000

600,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 -2015 -2016 -2017 -2018 -

28

0

200,000

400,000

600,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

29

Cowie Water: Grade 3

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

3.07 127,300 391,018 3.97 16.8 0.81 33.05 6.43 12.21 3a Figures presented are median values

30

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

5

10

0

5

10

Month

Rep

orte

d ca

tch

Monthly flow data

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov

−1.0

−0.5

0.0

0.5

−1.0

−0.5

0.0

0.5

Month

Adj

uste

d F

low

31

Monthly stock estimates (out of season in black)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

20

40

60

0

20

40

60

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

25

50

75

100

125

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

32

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

33

Monthly number of spawning females

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

010203040

010203040

010203040

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

34

Monthly number of eggs

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

50,000

100,000

150,000

0

50,000

100,000

150,000

0

50,000

100,000

150,000

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

100,000

200,000

300,000

400,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

35

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 141,768 square meters of known salmon habitat in the Cowie Water and afurther 2,859 square meters where salmon may be present.

Egg requirement

0

500,000

1,000,000

1,500,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 3.972015 16.802016 0.812017 33.052018 6.43

36

0

500,000

1,000,000

1,500,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

37

River Dee SAC: Grade 1

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

3.05 9,261,200 28,215,587 91.86 82.07 91.29 93.76 89.64 89.72 1a Figures presented are median values

38

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

500

1,000

0

500

1,000

Month

Rep

orte

d ca

tch

Monthly flow data

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov

−1.0

−0.5

0.0

0.5

−1.0

−0.5

0.0

0.5

Month

Adj

uste

d F

low

39

Monthly stock estimates (out of season in black)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

5,000

10,000

15,000

0

5,000

10,000

15,000

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

20,000

40,000

60,000

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

40

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

41

Monthly number of spawning females

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

5,000

10,000

0

5,000

10,000

0

5,000

10,000

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

42

Monthly number of eggs

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

20,000,000

40,000,000

60,000,000

0

20,000,000

40,000,000

60,000,000

0

20,000,000

40,000,000

60,000,000

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

50,000,000

100,000,000

150,000,000

200,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

43

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 10,214,141 square meters of known salmon habitat in the River Dee SAC anda further 309,956 square meters where salmon may be present.

Egg requirement

0

50,000,000

100,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 91.862015 82.072016 91.292017 93.762018 89.64

44

0

50,000,000

100,000,000

150,000,000

200,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

45

River Don: Grade 3

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

2.32 4,112,800 9,560,190 65.5 53.68 51.6 42.95 46.01 51.95 3a Figures presented are median values

46

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

100

200

300

0

100

200

300

Month

Rep

orte

d ca

tch

Monthly flow data

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov

−1.0

−0.5

0.0

0.5

−1.0

−0.5

0.0

0.5

Month

Adj

uste

d F

low

47

Monthly stock estimates (out of season in black)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

250

500

750

1,000

0

250

500

750

1,000

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

2,000

4,000

6,000

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

48

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

49

Monthly number of spawning females

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

250

500

750

0

250

500

750

0

250

500

750

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

50

Monthly number of eggs

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

1,000,000

2,000,000

3,000,000

0

1,000,000

2,000,000

3,000,000

0

1,000,000

2,000,000

3,000,000

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

5,000,000

10,000,000

15,000,000

20,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

51

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 4,373,313 square meters of known salmon habitat in the River Don and afurther 300,299 square meters where salmon may be present.

Egg requirement

0

10,000,000

20,000,000

30,000,000

40,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 65.502015 53.682016 51.602017 42.952018 46.01

52

0

10,000,000

20,000,000

30,000,000

40,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

53

River Ythan: Grade 3

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

2.45 585,100 1,430,731 55.32 50.81 32.17 47.58 40.32 45.24 3a Figures presented are median values

54

1. Converting Reported Catches to Numbers of Returning Salmon

Reported Catches (black = retained, blue = released)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

25

50

75

100

0

25

50

75

100

Month

Rep

orte

d ca

tch

Monthly flow data

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov−1.5

−1.0

−0.5

0.0

0.5

1.0

−1.5

−1.0

−0.5

0.0

0.5

1.0

Month

Adj

uste

d F

low

55

Monthly stock estimates (out of season in black)

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0

100

200

300

0

100

200

300

Month

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Annual estimated stock

0

200

400

600

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

56

Annual catch as a proportion of stock

0.00

0.25

0.50

0.75

1.00

2014 2015 2016 2017 2018Year

Rep

orte

d ca

tch

/ Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

57

Monthly number of spawning females

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

050

100150200

050

100150200

050

100150200

Month

Est

imat

ed A

bund

ance

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

58

Monthly number of eggs

2014 2015 2016 2017 2018

1SW

2SW

3SW

Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct Jan Apr Jul Oct

0

200,000

400,000

600,000

0

200,000

400,000

600,000

0

200,000

400,000

600,000

Month

Est

imat

ed N

umbe

r of

Egg

s

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

Total annual egg numbers

0

500,000

1,000,000

1,500,000

2,000,000

2,500,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

59

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 613,162 square meters of known salmon habitat in the River Ythan and afurther 51,709 square meters where salmon may be present.

Egg requirement

0

2,000,000

4,000,000

6,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 55.322015 50.812016 32.172017 47.582018 40.32

60

0

2,000,000

4,000,000

6,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

61

River Ugie: Grade 3

Detailed information on catches is not publicly available for this assessment area

Summary Table

Percentage chance meeting requirement

Eggs required(m2)a

Area(m2)a

Total eggrequirementa 2014 2015 2016 2017 2018 Overall Grade

2.02 541,200 1,091,448 28.81 57.94 69.97 37.51 39.76 46.8 3a Figures presented are median values

62

1. Converting Reported Catches to Numbers of Returning Salmon

Annual estimated stock

0

250

500

750

2014 2015 2016 2017 2018Year

Est

imat

ed s

tock

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

2. Converting Numbers of Returning Salmon to Numbers of Spawning Females

Ages of fish

2017 2018

2014 2015 2016

Jan Mar May Jul Sep Nov Jan Mar May Jul Sep Nov

Jan Mar May Jul Sep Nov0.00

0.25

0.50

0.75

1.00

0.00

0.25

0.50

0.75

1.00

Month

Pro

port

ion

of s

alm

on

1sw

2sw

3sw

63

3. Converting Number of Spawners to Number of Eggs

Egg contents of females

2017 2018

2014 2015 2016

Jan MarMay Jul Sep Nov Jan MarMay Jul Sep Nov

Jan MarMay Jul Sep Nov0

5000

10000

15000

0

5000

10000

15000

Month

Num

ber

of e

ggs

age

1sw

2sw

3sw

Total annual egg numbers

0

1,000,000

2,000,000

3,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars).

64

4. Egg requirement

Areas of salmon habitat in square meters

There is an estimated 468,597 square meters of known salmon habitat in the River Ugie and afurther 146,438 square meters where salmon may be present.

Egg requirement

0

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

Est

imat

ed e

gg r

equi

rem

ent

Plot shows 50, 70 and 90% of theestimates (wide to narrow bars).

5. Percentage chance that the egg requirement has been reached

Year Percentage above

2014 28.812015 57.942016 69.972017 37.512018 39.76

65

0

1,000,000

2,000,000

3,000,000

4,000,000

5,000,000

2014 2015 2016 2017 2018Year

Est

imat

ed e

gg n

umbe

rs

Plot shows 50, 70 and 90% of the estimates (wide to narrow bars). Shaded areasrepresent 50, 70 and 90% of the estimated egg requirements (dark to light areas)

66

River South Esk SAC: Grade 2Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

River North Esk: Grade 1Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

Bervie Water: Grade 3Summary Table1. Converting Reported Catches to Numbers of Returning SalmonAnnual estimated stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fish

3. Converting Number of Spawners to Number of EggsEgg contents of femalesTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

Carron Water: Grade 3Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

Cowie Water: Grade 3Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

River Dee SAC: Grade 1Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

River Don: Grade 3Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

River Ythan: Grade 3Summary Table1. Converting Reported Catches to Numbers of Returning SalmonReported Catches (black = retained, blue = released)Monthly flow dataMonthly stock estimates (out of season in black)Annual estimated stockAnnual catch as a proportion of stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fishMonthly number of spawning females

3. Converting Number of Spawners to Number of EggsEgg contents of femalesMonthly number of eggsTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached

River Ugie: Grade 3Summary Table1. Converting Reported Catches to Numbers of Returning SalmonAnnual estimated stock

2. Converting Numbers of Returning Salmon to Numbers of Spawning FemalesAges of fish

3. Converting Number of Spawners to Number of EggsEgg contents of femalesTotal annual egg numbers

4. Egg requirementAreas of salmon habitat in square metersEgg requirement

5. Percentage chance that the egg requirement has been reached