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Jan 27, 2006 – 1COBTWG / ESSA Technologies
The Okanagan Fish-Water Management The Okanagan Fish-Water Management (OKFWM) Tool: (OKFWM) Tool: Balancing Water Balancing Water
Objectives in Real-TimeObjectives in Real-Time
Kim Hyatt, Brian Symonds, Andrew Wilson, Clint Alexander, Colin Daniel, Calvin Peters, David Marmorek, Howard Wright, Deana Machin,
Brian Guy, Brent Philips, Harvey Andrusak, Chris Bull, Rick Klinge
Status of Central Okanagan WatershedsJan 27, 2006
Jan 27, 2006 – 2COBTWG / ESSA Technologies
Water Use ConflictConflict
• Flood Control
• Fish survival
• Agricultural & domestic consumption
• Recreation / Navigation
Jan 27, 2006 – 3COBTWG / ESSA Technologies
Okanagan Basin
Net Feb 1st - July 31st inflows ~ 560 million m3 or roughly 1.6m water surface elevation change
Drainage area = 6,090 km2
Surface area = 351 km2
Volume ~ 24.6 billion m3
Month Inflow (m3.sec-1)
October -0.29
November 4.42
December 3.82
January 5.97
February 6.86
March 11.40
April 34.33
May 87.64
June 51.41
July 11.10
August -1.84
September -1.52
Jan 27, 2006 – 4COBTWG / ESSA Technologies
Large variation in total net annual inflowANNUAL NET INFLOW TO OKANAGAN LAKE (1921-2003)
0
200
400
600
800
1,000
1,200
1,400
1,6001
92
1
19
24
19
27
19
30
19
33
19
36
19
39
19
42
19
45
19
48
19
51
19
54
19
57
19
60
19
63
19
66
19
69
19
72
19
75
19
78
19
81
19
84
19
87
19
90
19
93
19
96
19
99
20
02
YEAR
AN
NU
AL
NE
T I
NF
LO
W (
mii
lio
n m
3 )
19
97
19
96
20
03
Jan 27, 2006 – 5COBTWG / ESSA Technologies
Day to day question is: how should release patterns be managed?
Okanagan Lake Dam (Penticton)
Jan 27, 2006 – 6COBTWG / ESSA Technologies
Jan 27, 2006 – 7COBTWG / ESSA Technologies
More people, demand & near-shore infrastructure
Jan 27, 2006 – 8COBTWG / ESSA Technologies
0
20
40
60
80
100
120
1965 1975 1985 1995 2005
# o
f sockeye (
1000's
)
Passage index – Wells Dam Columbia River, WA
Jan 27, 2006 – 9COBTWG / ESSA Technologies
Improved understanding of biophysical relationships affecting survival of Okanagan
River Sockeye Salmon
Jan 27, 2006 – 10COBTWG / ESSA Technologies
Sockeye & Okanagan River Flows
0
10
20
30
40
50
60
70
80O
ct-0
1
Oct
-15
Oct
-29
Nov
-12
Nov
-26
Dec
-10
Dec
-24
Jan-
07
Jan-
21
Feb
-04
Feb
-18
Mar
-04
Mar
-18
Apr
-01
Apr
-15
Apr
-29
May
-13
May
-27
Jun-
10
Jun-
24
Jul-0
8
Jul-2
2
Aug
-05
Aug
-19
Sep
-02
Sep
-16
Sep
-30
Oliv
er d
isch
arge
(m
3.s
-1)
AVG
HIGH
LOW
SockeyeSpawning
IncubationEmergence
Scour & entombment
Dessication
Jan 27, 2006 – 11COBTWG / ESSA Technologies
Temperature-Oxygen “Squeeze” and Density-Independent Rearing Limitations in
Osoyoos Lake
(a) OSOYOOS LAKE
> 17 OC
< 4 ppm O2
Dep
th (
m)
Useable Volume
North Basin Central Basin South Basin
Jan 27, 2006 – 12COBTWG / ESSA Technologies
COBTWG: Do better through inter-agency, inter-disciplinary collaboration on
assessment toolsCurrent understanding of hydrology, SK, KOK, impacts on people
Self-correcting forecasts using real-time data
multiple objectives & tradeoffs
Web-accessible assumptions & results
OKFWM
Train a new generation of water managers
Science foundation
Real-time data
See trade-offs
Share ideas
Jan 27, 2006 – 13COBTWG / ESSA Technologies
Through collaborative process of objective setting, data gathering & joint tool development overcomeovercome:
OKFWM
Science foundation
Real-time data
See trade-offs
Share ideas
• Self-orientationSelf-orientation
• Absence of trustAbsence of trust
• Perceived lack of Perceived lack of accountabilityaccountability
createcreate:• Software as lasting reference Software as lasting reference (not just (not just
paper record)paper record)• Easily engage new water/fish mgrsEasily engage new water/fish mgrs
Jan 27, 2006 – 14COBTWG / ESSA Technologies
What is OKFWM?• Internet-accessible decision support system
• Incorporates real-time data and biophysical models. Field derived & testable empirical relationships. Value judgements on acceptable ranges for performance measures.
• Developed collaboratively by working group based on historical data and intensive field work by DFO, ONA, BCMoE, SUMMIT
• Allows gaming and rapid trade-off analysis for daily to weekly in-season decisions
Jan 27, 2006 – 15COBTWG / ESSA Technologies
Okanagan Lake
Okanagan River at Penticton
Okanagan River at OK Falls
Okanagan River at Oliver
Osoyoos Lake
Okanagan Lake
Skaha Lake
Vaseaux Lake
Osoyoos Lake
· Flood control (< 342.75m)
· Shore spawning kokanee incubation (lake draw-down from Oct-15 to Apr less than 0.2 m)
· Domestic & agricultural water intakes
· Recreational navigation
· Flood control (< 60 m3.sec-1)
· River recreation (> 10 m3.sec-1, Jul-Aug)
· Flood control (< 78 m3.sec-1)
· Flood control (< 96 m3.sec-1)
· Sockeye incubation (flows less than 30 m3.sec-1 Nov - Apr/May)
· Domestic & agricultural water intakes (> 6 m3.sec-1)
· Recreational navigation
· Sockeye juveniles, temperature-oxygen squeeze mitigation (cumulative Jul - Aug inflows ~ 128 million m3+)
Okanagan Lake Dam
Benefits:
Updated water management guidelines +
shared appreciation of
priorities
Jan 27, 2006 – 16COBTWG / ESSA Technologies
Jan 27, 2006 – 17COBTWG / ESSA Technologies
Jan 27, 2006 – 18COBTWG / ESSA Technologies
Jan 27, 2006 – 19COBTWG / ESSA Technologies
340.50
341.00
341.50
342.00
342.50
343.00
343.50
344.00
344.50
345.00
345.50
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun
-02
Jun
-16
Jun
-30
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
Okanagan River at Penticton - Average
Flood control
Recreation
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun
-02
Jun
-16
Jun
-30
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Riv
er
(m3.s
ec
-1)
Flood control
-5.0
5.0
15.0
25.0
35.0
45.0
55.0
65.0
75.0
85.0
95.0
105.0
115.0
125.0
135.0
145.0
155.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun
-02
Jun
-16
Jun
-30
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Riv
er
(m3.s
ec
-1)
Black line: actual Okanagan Lake Dam releases (past)
L. blue line: proposed Okanagan Lake Dam release plan
Jan 27, 2006 – 20COBTWG / ESSA Technologies
What happened last year?Cumulative Weekly Net Inflows, 2004/2005 - Okanagan Lake (mil. m3)
-50
0
50
100
150
200
250
300
350
400
450
500
550
600
Jan-
07
Jan-
21
Feb-
04
Feb-
18
Mar
-04
Mar
-18
Apr
-01
Apr
-15
Apr
-29
May
-13
May
-27
Jun-
10
Jun-
24
Jul-0
8
Jul-2
2
Aug
-05
Aug
-19
Sep
-02
Sep
-16
Sep
-30
Oct
-14
Oct
-28
Nov
-11
Nov
-25
Dec
-09
Dec
-23
Average
Current
Okanagan River at Penticton - Average
Flood control
Recreation
0.0
10.020.0
30.040.0
50.0
60.070.0
80.0
90.0100.0
110.0120.0
130.0
140.0150.0
160.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-14
Jul-28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK R
iver
(m3.s
ec-1
)
Okanagan Lake - Average
Flood control
Domestic intakes
Ag. intakes
Navigation (boats)
Navigation (docks)
Kokanee survival
341.9
340.50
341.00
341.50
342.00
342.50
343.00
343.50
344.00
344.50
345.00
345.50
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-14
Jul-28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK L
ake
Okanagan River at Oliver - Average
Flood control
Domestic intakes
Ag. intakes
Sockeye Eggs
Sockeye Alevins
-5.0
5.0
15.0
25.0
35.0
45.0
55.0
65.0
75.0
85.0
95.0
105.0
115.0
125.0
135.0
145.0
155.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-14
Jul-28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK R
iver
(m3.s
ec-1
)
Jan 27, 2006 – 21COBTWG / ESSA Technologies
Spring 2004 & climate -- ‘nervous’ mgrs.Cumulative Weekly Net Inflows - Okanagan Lake (mil. m3)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
Jan-
07
Jan-
21
Feb
-04
Feb
-18
Mar
-04
Mar
-18
Apr
-01
Apr
-15
Apr
-29
May
-13
May
-27
Jun-
10
Jun-
24
Jul-0
8
Jul-2
2
Aug
-05
Aug
-19
Sep
-02
Sep
-16
Sep
-30
Oct
-14
Oct
-28
Nov
-11
Nov
-25
Dec
-09
Dec
-23
Average1996/1997
2004/2005
Okanagan Lake - 1996/ 1997
Flood control
Domestic intakes
Ag. intakes
Navigation (boats)
Navigation (docks)
Kokanee survival
341.9
340.50
341.00
341.50
342.00
342.50
343.00
343.50
344.00
344.50
345.00
345.50
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-14
Jul-28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK L
ake
Okanagan River at Penticton - Average
Flood control
Recreation
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
Oct
-07
Oct
-21
Nov
-04
Nov
-18
Dec
-02
Dec
-16
Dec
-30
Jan-
13
Jan-
27
Feb-
10
Feb-
24
Mar
-10
Mar
-24
Apr
-07
Apr
-21
May
-05
May
-19
Jun-
02
Jun-
16
Jun-
30
Jul-14
Jul-28
Aug
-11
Aug
-25
Sep
-08
Sep
-22
OK R
iver
(m3.s
ec-1
)
Jan 27, 2006 – 22COBTWG / ESSA Technologies
25yr retrospective analysis:
“If you had used OKFWM between 1974 & 2003, what releases would have been made & how might this have changed the abundance of sockeye smolts leaving Osoyoos Lake?”
Q: Will flow mgmt. ‘make more sockeye smolts’?
Jan 27, 2006 – 23COBTWG / ESSA Technologies
Okanagan Lake - Average
Flood control
Domestic intakes
Ag. intakes
Navigation (boats)
Navigation (docks)
Kokanee survival
341.9
340.50
341.00
341.50
342.00
342.50
343.00
343.50
344.00
344.50
345.00
345.50
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Lake (
m)
Okanagan River at Penticton - Average
Flood control
Recreation
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Riv
er
(m3.s
ec
-1)
Okanagan River at Oliver - Average
Flood control
Domestic intakes
Ag. intakes
Sockeye Eggs
Sockeye Alevins
-5.0
5.0
15.0
25.0
35.0
45.0
55.0
65.0
75.0
85.0
95.0
105.0
115.0
125.0
135.0
145.0
155.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Riv
er
(m3.s
ec
-1)
Lake Level
Dam Outflow
Down-stream
River Flow
1991 ActualOkanagan Lake - Average
Flood control
Domestic intakes
Ag. intakes
Navigation (boats)
Navigation (docks)
Kokanee survival
341.9
340.50
341.00
341.50
342.00
342.50
343.00
343.50
344.00
344.50
345.00
345.50
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Lake (
m)
Okanagan River at Penticton - Average
Flood control
Recreation
0.0
10.0
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
110.0
120.0
130.0
140.0
150.0
160.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Riv
er
(m3.s
ec
-1)
Okanagan River at Oliver - Average
Flood control
Domestic intakes
Ag. intakes
Sockeye Eggs
Sockeye Alevins
-5.0
5.0
15.0
25.0
35.0
45.0
55.0
65.0
75.0
85.0
95.0
105.0
115.0
125.0
135.0
145.0
155.0
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
OK
Riv
er
(m3.s
ec
-1)
Rearing sockeye fry
Habitable Volume
Squeeze threshold (extra mortality)
Oliver Q
0
20
40
60
80
100
120
140
160
180
200
220
240
260
Oct
-07
Oct
-21
Nov-0
4
Nov-1
8
Dec-
02
Dec-
16
Dec-
30
Jan-1
3
Jan-2
7
Feb-1
0
Feb-2
4
Mar-
10
Mar-
24
Apr-
07
Apr-
21
May-0
5
May-1
9
Jun-0
2
Jun-1
6
Jun-3
0
Jul-
14
Jul-
28
Aug-1
1
Aug-2
5
Sep-0
8
Sep-2
2
Oct
-06
Oct
-20
Nov-0
3
Nov-1
7
Dec-
01H
ab
itab
le r
eari
ng
volu
me (
mil.
m3)
& O
liver
dis
ch
arg
e
(m3
/s)
(Ju
l-A
ug
ust
seri
es)
1991 w OKFWM
Kokanee dewatering avoided
Sockeye scour avoided
Recreation maintained
Small flood ‘premium’
Jan 27, 2006 – 24COBTWG / ESSA Technologies
Benefits depend on water year, but 55% avg. increase in sockeye smolt production
2003/ 2004 Retrospective Analysis
upr limit flexibility
lwr limit flexibility
(100,000)
100,000
300,000
500,000
700,000
900,000
1,100,000
1,300,000
- 20
0
40
0
60
0
80
0
1,0
00
1,2
00
Net inflow (mil. m3) Feb - J ul
Ch
an
ge in
sm
olt
ou
tpu
t u
sin
g O
KFW
M
*for details see: Hyatt and Alexander. 2005. Retrospective analysis.
Jan 27, 2006 – 25COBTWG / ESSA Technologies
Benefits: Refined year-type specific water management strategies
February 1 - July 31 net inflow (millions m3)
Recommended Okanagan Lake dam release strategy
< 310 Drought only management.
Approx. 310‑410 Key is to do best to identify this condition as far ahead as possible so that water is held during winter (i.e., minimum drawdown) to allow enough water for summer pulse release to Osoyoos Lake.
Approx. 410‑550 Special strategies not likely required. OBA Implementation Agreement likely to come close to best balance results, subject to guidelines 1 -10 above.
Approx. 550‑775 (a) Hold and flush or (b) winter pulse hold and flush (more lake drawdown, but reduced flood risk and reduced likelihood for “panic” flows in spring).
> 775‑850+ Flood only management.
*for details see: Alexander, Symonds, Hyatt, eds. 2005. Apprentice Fish/Water Mgmt Guidebook.
Jan 27, 2006 – 26COBTWG / ESSA Technologies
Benefits: Rapid knowledge transfer -- not “600 pgs. of dust” on a shelf
• Data collection & paper science are foundation of OKFWM…
• …But software is the living, tangible product of effort:– Managers enthusiastically adopted tool for
operational use (2003, 2004, 2005 to present)– “Apprentice” fish/water managers able to
competently balance objectives after simulating 2 to 3 water years.
• Highly effective training investment of ~ 10 to 14 hours that otherwise would require 3 or 4 years.
Jan 27, 2006 – 27COBTWG / ESSA Technologies
Additional InformationKim HyattFisheries and Oceans Canada, Nanaimo, BC [email protected]
Clint AlexanderESSA Technologies Ltd., Kelowna [email protected]