The Okanagan Fish-Water Management (OKFWM) Tool: Balancing Water Objectives in Real-Time

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


Water Use ConflictConflict

• Flood Control

• Fish survival

• Agricultural & domestic consumption

• Recreation / Navigation


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


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

1,60019

21

1924

1927

1930

1933

1936

1939

1942

1945

1948

1951

1954

1957

1960

1963

1966

1969

1972

1975

1978

1981

1984

1987

1990

1993

1996

1999

2002

YEAR

AN

NU

AL

NET

INFL

OW

(miil

ion

m3 )

1997

1996

2003


Day to day question is: how should release patterns be managed?

Okanagan Lake Dam (Penticton)


More people, demand & near-shore infrastructure


0

20

40

60

80

100

120

1965 1975 1985 1995 2005

# of

soc

keye

(100

0's)

Passage index – Wells Dam Columbia River, WA


Improved understanding of biophysical relationships affecting survival of Okanagan

River Sockeye Salmon


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

(m3 .s

-1)

AVGHIGHLOW

SockeyeSpawning

IncubationEmergence

Scour & entombment

Dessication


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


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


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


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


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 DamBenefits:

Updated water management guidelines +

shared appreciation of

priorities


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-

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

Okanagan River at Penticton - Average

Flood control

Recreation

0.010.020.030.040.050.060.070.080.090.0

100.0110.0120.0130.0140.0150.0160.0

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Rive

r (m

3 .se

c-1)

Flood control

-5.05.0

15.025.035.045.055.065.075.085.095.0

105.0115.0125.0135.0145.0155.0

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Rive

r (m

3 .se

c-1)

Black line: actual Okanagan Lake Dam releases (past)

L. blue line: proposed Okanagan Lake Dam release plan


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-0

1

Apr-1

5

Apr-2

9

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-1

4

Oct-2

8

Nov-

11

Nov-

25

Dec-

09

Dec-

23

AverageCurrent


Flood control

Recreation

0.010.020.030.040.050.060.070.080.090.0

100.0110.0120.0130.0140.0150.0160.0

Oct-0

7Oc

t-21

Nov-

04No

v-18

Dec-0

2De

c-16

Dec-3

0Ja

n-13

Jan-

27Fe

b-10

Feb-

24Ma

r-10

Mar-2

4Ap

r-07

Apr-2

1Ma

y-05

May-

19Ju

n-02

Jun-

16Ju

n-30

Jul-1

4Ju

l-28

Aug-

11Au

g-25

Sep-

08Se

p-22

OK R

iver

(m3 .sec-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-0

7Oc

t-21

Nov-

04No

v-18

Dec-0

2De

c-16

Dec-3

0Ja

n-13

Jan-

27Fe

b-10

Feb-

24Ma

r-10

Mar-2

4Ap

r-07

Apr-2

1Ma

y-05

May-

19Ju

n-02

Jun-

16Ju

n-30

Jul-1

4Ju

l-28

Aug-

11Au

g-25

Sep-

08Se

p-22

OK L

ake

Okanagan River at Oliver - Average

Flood controlDomestic intakesAg. intakesSockeye EggsSockeye Alevins

-5.05.0

15.025.035.045.055.065.075.085.095.0

105.0115.0125.0135.0145.0155.0

Oct-0

7Oc

t-21

Nov-

04No

v-18

Dec-0

2De

c-16

Dec-3

0Ja

n-13

Jan-

27Fe

b-10

Feb-

24Ma

r-10

Mar-2

4Ap

r-07

Apr-2

1Ma

y-05

May-

19Ju

n-02

Jun-

16Ju

n-30

Jul-1

4Ju

l-28

Aug-

11Au

g-25

Sep-

08Se

p-22

OK R

iver

(m3 .sec-1

)


Spring 2004 & climate -- ‘nervous’ mgrs.Cumulative Weekly Net Inflows - Okanagan Lake (mil. m3)

0100200300400500600700800900

10001100120013001400

Jan-

07

Jan-

21

Feb-

04

Feb-

18

Mar

-04

Mar

-18

Apr-0

1

Apr-1

5

Apr-2

9

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-1

4

Oct-2

8

Nov-

11

Nov-

25

Dec-

09

Dec-

23

Average1996/19972004/2005

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-0

7Oc

t-21

Nov-

04No

v-18

Dec-0

2De

c-16

Dec-3

0Ja

n-13

Jan-

27Fe

b-10

Feb-

24Ma

r-10

Mar-2

4Ap

r-07

Apr-2

1Ma

y-05

May-

19Ju

n-02

Jun-

16Ju

n-30

Jul-1

4Ju

l-28

Aug-

11Au

g-25

Sep-

08Se

p-22

OK L

ake


Flood control

Recreation

0.010.020.030.040.050.060.070.080.090.0

100.0110.0120.0130.0140.0150.0160.0

Oct-0

7Oc

t-21

Nov-

04No

v-18

Dec-0

2De

c-16

Dec-3

0Ja

n-13

Jan-

27Fe

b-10

Feb-

24Ma

r-10

Mar-2

4Ap

r-07

Apr-2

1Ma

y-05

May-

19Ju

n-02

Jun-

16Ju

n-30

Jul-1

4Ju

l-28

Aug-

11Au

g-25

Sep-

08Se

p-22

OK R

iver

(m3 .s

ec-1)


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’?


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-0

7

Oct-2

1

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Lake

(m

)


Flood control

Recreation

0.010.020.030.040.050.060.070.080.090.0

100.0110.0120.0130.0140.0150.0160.0

Oct-

07

Oct-2

1

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Rive

r (m

3 .se

c-1)



-5.05.0

15.025.035.045.055.065.075.085.095.0

105.0115.0125.0135.0145.0155.0

Oct-0

7

Oct-2

1

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Rive

r (m

3 .se

c-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-0

7

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Lake

(m

)


Flood control

Recreation

0.010.020.030.040.050.060.070.080.090.0

100.0110.0120.0130.0140.0150.0160.0

Oct-0

7

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Riv

er (

m3 .

sec-1

)



-5.05.0

15.025.035.045.055.065.075.085.095.0

105.0115.0125.0135.0145.0155.0

Oct-0

7

Oct-2

1

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

OK

Rive

r (m

3 .se

c-1)

Rearing sockeye fry

Habitable Volume

Squeeze threshold (extra mortality)

Oliver Q

020406080

100120140160180200220240260

Oct-0

7

Oct-2

1

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-1

4

Jul-2

8

Aug-

11

Aug-

25

Sep-

08

Sep-

22

Oct-0

6

Oct-2

0

Nov-

03

Nov-

17

Dec-

01

Hab

itab

le r

eari

ng v

olum

e (m

il. m

3 ) &

Oliv

er d

isch

arge

(m

3/s)

(Ju

l-Au

gust

ser

ies)

1991 w OKFWM

Kokanee dewatering avoided

Sockeye scour avoided

Recreation maintained

Small flood ‘premium’


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

- 200

400

600

800

1,00

0

1,20

0

Net inflow (mil. m3) Feb - J ul

Chan

ge in

sm

olt o

utpu

t usin

g OK

FWM

*for details see: Hyatt and Alexander. 2005. Retrospective analysis.


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.


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.


Additional InformationKim HyattFisheries and Oceans Canada, Nanaimo, BC [email protected]

Clint AlexanderESSA Technologies Ltd., Kelowna [email protected]

The Okanagan Fish-Water Management (OKFWM) Tool: Balancing Water Objectives in Real-Time

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