Water Supply Meeting September 14, 2011. Agenda Fall and winter weather forecasts- Idaho Power and NWS meteorologists Soil Moisture and SWSI - NRCS Moving.

Water Supply Meeting

September 14, 2011

Agenda

•Fall and winter weather forecasts- Idaho Power and NWS meteorologists•Soil Moisture and SWSI - NRCS •Moving to the new 30 (1981-2010) year average – NWS and NRCS•Change to using ESP instead of Regression forecasts –NWRFC •Fall and early winter targets for reservoir operations – USBR•Reservoir storage compared with average reservoir storage – Idaho Power •Fall Chinook Operation Plan – Idaho Power •Communication – Idaho Power•Next Water Supply Meeting – IDWR

Agenda•Fall and winter weather forecasts- Idaho Power and NWS meteorologists•Soil Moisture and SWSI - NRCS •Moving to the new 30 (1981-2010) year average – NWS and NRCS•Change to using ESP instead of Regression forecasts –NWRFC •Fall and early winter targets for reservoir operations – USBR•Reservoir storage compared with average reservoir storage – Idaho Power •Fall Chinook Operation Plan – Idaho Power •Communication – Idaho Power•Next Water Supply Meeting – IDWR

Agenda

•Fall and winter weather forecasts- Idaho Power and NWS meteorologists•Soil Moisture and SWSI - NRCS •Moving to the new 30 (1981-2010) year average – NWS and NRCS•Change to using ESP instead of Regression forecasts –NWRFC •Fall and early winter targets for reservoir operations – USBR•Reservoir storage compared with average reservoir storage – Idaho Power •Fall Chinook Operation Plan – Idaho Power •Communication – Idaho Power•Next Water Supply Meeting – IDWR

Brownlee Total Storage Brownlee Total Average Stor-age for September 12 (1990-

2010)

Major Reservoirs Above Brownlee

Major Reservoirs Above Brownlee Average for Sep-

tember 12 (1990-2010)

9/12 Storage 1033.8951875 1116.32181944444 4755.6956796875 2772.36198723769

Available Space 386.1668125 303.740180555556 1731.5243203125 3714.85801276231

500

1,500

2,500

3,500

4,500

5,500

6,500

Snake River Reservoir Storage on September 12, 2011 Compared with 1990-2010 Average

1000

Acr

e-F

eet

Upper Snake Average

Upper Snake 2011

Payette Aver-age

Payette 2011 Boise Average Boise 2011 Owyhee Aver-age

Owyhee 2011

9/12 Stor-age

1535 2988 503 534 477 710 257 524

Available Space

2320 867 293 262 632 399 458 191

250

750

1250

1750

2250

2750

3250

3750

Snake River Reservoir Storage on September 12, 2011 Compared with 1990-2010 Average

1000

Acr

e-F

eet

Agenda

•Fall and winter weather forecasts- Idaho Power and NWS meteorologists•Soil Moisture and SWSI - NRCS •Moving to the new 30 (1981-2010) year average – NWS and NRCS•Change to using ESP instead of Regression forecasts –NWRFC •Fall and early winter targets for reservoir operations – USBR•Reservoir storage compared with average reservoir storage – Idaho Power •Fall Chinook Operation Plan – Idaho Power •Communication – Idaho Power•Next Water Supply Meeting – IDWR

Idaho Power Webpage

2011 Fall Chinook Operation Plan

5-Se

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Sep

11-S

ep

14-S

ep

17-S

ep

20-S

ep

23-S

ep

26-S

ep

29-S

ep2-

Oct5-

Oct8-

Oct

11-O

ct

14-O

ct

17-O

ct

20-O

ct

23-O

ct

26-O

ct

29-O

ct

1-Nov

4-Nov

7-Nov

10-N

ov

13-N

ov

16-N

ov

19-N

ov

22-N

ov

25-N

ov

28-N

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Dec4-

Dec12000

14000

16000

18000

20000

22000

24000

26000

28000

2010.00

2020.00

2030.00

2040.00

2050.00

2060.00

2070.00

2080.00

Hells Canyon Inflow (cfs)

Hells Canyon Out-flow (cfs)

BrownleeElevation (ft)

Day/Month

Hel

ss C

anyo

n I

nfl

ow/O

utf

low

(cf

s)

Bro

wn

lee

Hea

d E

leva

tion

(ft

)

Agenda

•Fall and winter weather forecasts- Idaho Power and NWS meteorologists•Soil Moisture and SWSI - NRCS •Moving to the new 30 (1981-2010) year average – NWS and NRCS•Change to using ESP instead of Regression forecasts –NWRFC •Fall and early winter targets for reservoir operations – USBR•Reservoir storage compared with average reservoir storage – Idaho Power •Fall Chinook Operation Plan – Idaho Power •Communication – Idaho Power•Next Water Supply Meeting – IDWR

Idaho Power Webpage

Idaho Power Webpage

Historical Flood Event

Historical Flood Event

Agenda

•Fall and winter weather forecasts- Idaho Power and NWS meteorologists•Soil Moisture and SWSI - NRCS •Moving to the new 30 (1981-2010) year average – NWS and NRCS•Change to using ESP instead of Regression forecasts –NWRFC •Fall and early winter targets for reservoir operations – USBR•Reservoir storage compared with average reservoir storage – Idaho Power •Fall Chinook Operation Plan – Idaho Power •Communication – Idaho Power•Next Water Supply Meeting – IDWR

Thank You

http://www.idahopower.com/OurEnvironment/FishAquatic/default.cfm

http://www.idahopower.com/OurEnvironment/WaterInformation/StreamFlow/maps/default.cfm

http://www.idahopower.com/OurEnvironment/WaterInformation/Hellsrivflw/default.cfm