Idaho Water Supply Committee March 16, 2012 Rain on snow Pine Creek Pass ~6,700 ft (between Idaho...
53
Idaho Water Supply Committee March 16, 2012 Rain on snow Pine Creek Pass ~6,700 ft (between Idaho Falls & Victor) April 12, 2012 Jeff Anderson NRCS Snow Survey March Precipitation % of Nor
-
Upload
roxanne-crawford -
Category
Documents
-
view
214 -
download
0
Transcript of Idaho Water Supply Committee March 16, 2012 Rain on snow Pine Creek Pass ~6,700 ft (between Idaho...
Idaho Water Supply
Committee
March 16, 2012Rain on snow
Pine Creek Pass ~6,700 ft(between Idaho Falls & Victor)
April 12, 2012
Jeff AndersonNRCS Snow Survey
March Precipitation % of Normal
SNOTEL Month to Date Precipitation % of NormalMarch 2012
SNOTEL Month to Date Precipitation % of NormalMarch 2012 March 2011
SNOTEL 14-Day Average Temperature Anomalies March 1-14 March 15-29 March 30-April 12
SNOTEL Maximum Temperature RecordsMonday Apr 9, 2012
TuesdayApr 10, 2012
SNOTEL Maximum Temperature AnomalyTuesdayApr 10, 2012
Monday Apr 9, 2012
Mountain Snowpack Change between March 1 and April 1, 2012
Big Lost +34%Priest +29%Payette +23%Little Wood +22%Salmon +19%Big Wood +16%Little Lost +16%Weiser +10%Boise + 6%Henrys Fk + 3%
Teton - 2%Snake above Pal - 6%Goose/Trapper -12%Salmon Falls -15%Bear -15%Owyhee -20%Bruneau -21%Blackfoot -22%
Compare toMarch 1 to April 1, 2011
SWE % increased statewide from 6-38%
Mountain Snowpack Change between March 1 and April 1, 2012
Big Lost +34%Priest +29%Payette +23%Little Wood +22%Salmon +19%Big Wood +16%Little Lost +16%Weiser +10%Boise + 6%Henrys Fk + 3%
Teton - 2%Snake above Pal - 6%Goose/Trapper -12%Salmon Falls -15%Bear -15%Owyhee -20%Bruneau -21%Blackfoot -22%
March 16, 2012Rain on snow
Pine Creek Pass ~6,700 ft(between Idaho Falls & Victor)
Otherwise 32F top to bottom
Top 2” were ~32.5F due to liquid water
Idaho State UniversityHydrology Field Day atPine Creek Pass SNOTEL
+6 days with temps above freezing
Rain = 0.6”Snowmelt = 1.0”Total runoff = 1.6”
17 sites saw snow melt begin in mid-March
Pine Creek Pass SNOTEL Water Year 2012
Melt starts ~2 weeks ahead of normal
10 sites have melted out75 sites had >0.3” SWE melt between Apr 8-11th
3 SNOTELs >9,000ft with >1” melt this week
CurrentIdaho and Upper Snake
SNOTEL Snowmelt Status(based on 104 sites)
April 5, 2012SAMUELS — A 60-foot-wide section of the forest road washed out on Friday, rendering it impassible to vehicles.
Panhandle
Bonners County Daily Bee
SNOTEL Month to Date Precipitation % of Normal
As of April 11, 2012
Boise Basin
Statesman
Jackson Kayak
sunvalley.com
Big WoodMarch 21, 2012
Big WoodApril 12, 2012
sunvalley.com
March +16%
Big LostMarch 15, 2012
Upper Snake BasinMarch 21, 2012
6,668ft elev
Upper Snake BasinApril 12, 20126,668ft elev
Snake River Station Water Year 20126,900ft at Yellowstone South Entrance
Melt starts ~3 weeks ahead of normal
Snake at Heise Apr-Sep 50% forecastMarch 1, 2012 3,830 KAF 92%
Snake at Heise Apr-Sep 50% ForecastMarch 1, 2012 3,830 KAF 92%April 1, 2012 3,290 KAF 79%Difference 540 KAF -13%
Bear LakeMarch 17, 2012
Jason Allen
Oakley ReservoirAugust 2011
Lynn Sessions
March 31, 2012 41.6 KAFAugust 31, 2011 36.3 KAF
Jan 2002 12 kaf
Jun 2011 149 kaf
Mar 2012 89 kaf
Salmon FallsJanuary 2012
OwyheesLooking west towards
Owyhee Reservoir from Succor Creek area
Steve Stuebner
April 3, 2012Owyhee / Malheur
Aerial Snow Course FlightFound
17 or 19 markers snow free
Reservoir Storage as of March 31, 2012 was 624 KAF
