1. 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 Normal

7. SNOTEL Month to Date Precipitation % of Normal March 2012

8. SNOTEL Month to Date Precipitation % of Normal March 2012March 2011

9. SNOTEL 14-Day Average Temperature Anomalies March 1-14March 15-29March 30-April 12

10. SNOTEL Maximum Temperature Records Monday Apr 9, 2012 Tuesday Apr 10, 2012

11. SNOTEL Maximum Temperature Anomaly Tuesday Apr 10, 2012 Monday Apr 9, 2012

12. 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%

13. Compare to March 1 to April 1, 2011 SWE % increased statewide from 6-38%

14. 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%

15. March 16, 2012 Rain on snow Pine Creek Pass ~6,700 ft (between Idaho Falls & Victor)

16. Otherwise 32F top to bottom Top 2” were ~32.5F due to liquid water Idaho State University Hydrology Field Day at Pine Creek Pass SNOTEL

17. +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

18. Pine Creek Pass SNOTEL Water Year 2012 Melt starts ~2 weeks ahead of normal

19. 10 sites have melted out 75 sites had >0.3” SWE melt between Apr 8-11 th 3 SNOTELs >9,000ft with >1” melt this week Current Idaho and Upper Snake SNOTEL Snowmelt Status (based on 104 sites)

21. April 5, 2012 SAMUELS — A 60-foot-wide section of the forest road washed out on Friday, rendering it impassible to vehicles. Panhandle Bonners County Daily Bee

25. SNOTEL Month to Date Precipitation % of Normal As of April 11, 2012

26. Boise Basin Statesman Jackson Kayak

28. sunvalley.com Big Wood March 21, 2012

29. Big Wood April 12, 2012 sunvalley.com

30. March +16%

32. Big Lost March 15, 2012

37. Upper Snake Basin March 21, 2012 6,668ft elev

38. Upper Snake Basin April 12, 2012 6,668ft elev

39. Snake River Station Water Year 2012 6,900ft at Yellowstone South Entrance Melt starts ~3 weeks ahead of normal

41. Snake at Heise Apr-Sep 50% forecast March 1, 2012 3,830 KAF92%

42. Snake at Heise Apr-Sep 50% Forecast March 1, 2012 3,830 KAF92% April 1, 2012 3,290 KAF79% Difference 540 KAF -13%

43. Bear Lake March 17, 2012 Jason Allen

45. Oakley Reservoir August 2011 Lynn Sessions March 31, 2012 41.6 KAF August 31, 2011 36.3 KAF

47. Jan 2002 12 kaf Jun 2011 149 kaf Mar 2012 89 kaf Salmon Falls January 2012

49. Owyhees Looking west towards Owyhee Reservoir from Succor Creek area Steve Stuebner

50. April 3, 2012 Owyhee / Malheur Aerial Snow Course Flight Found 17 or 19 markers snow free

52. Reservoir Storage as of March 31, 2012 was 624 KAF