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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
p8-
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
ov1-
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
