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Snow Survey Programs by State
Water Supply Forecast Probability Charts - Selected Stations
Product no longer supported
Select State and Basin Below
Arizona
Salt River
Verde River
San Francisco - Upper Gila River
Little Colorado River
Chuska Mountains
Northwestern Arizona
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Alaska
Upper Yukon
Central Yukon
Tanana
Western Interior
Arctic and Kotzebue Sound
Norton Sound - SW Delta & Bristol Bay
Copper
Matanuska - Susitna
Northern Cook Inlet
Kenai Penninsula
Western Gulf
Southeast
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
California
Sacramento River
San Joaquin River
Tulare Lake
North Coastal Area
Klamath
Lake Tahoe
Truckee River
Carson River
Walker River
Owens River
Northern Great Basin
Colorado River Basin
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Colorado
Yampa, White, & North Platte Rivers
Upper Colorado River
Gunnison River
San Miguel, Dolores, Animas, & San Juan Rivers
Upper Rio Grande
Arkansas River
South Platte River
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Idaho
Panhandle Region
Clearwater River
Salmon River
Weiser, Payette & Boise Rivers
Wood and Lost Rivers
Upper Snake River
Southside Snake River
Bear River
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Montana
Kootenai River
Flathead River
Upper Clark Fork River
BitterRoot River
Lower Clark Fork River
Jefferson River
Madison River
Gallatin River
Missouri Mainstem River
Sun-Teton-Marias Rivers
Smith-Judith-Musselshell Rivers
St. Mary & Milk Rivers
Upper Yellowstone River
Lower Yellowstone River
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Nevada
Lake Tahoe
Truckee River
Carson River
Walker River
Northern Great Basin
Upper Humboldt River
Lower Humboldt River
Clover Valley & Franklin River
Snake River
Owyhee River
Eastern Nevada
Lower Colorado River
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
New Mexico
Canadian River
Pecos River
Rio Grande
Mimbres River
San Francisco/Upper Gila River
Zuni/Bluewater Rivers
San Juan River
Rio Hondo
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Oregon
Owyhee & Malheur
Burnt, Powder, Pine, Grande Ronde & Imnaha
Umatilla, Walla Walla, Willow, Rock & Lower John Day
Upper John Day
Upper Deschutes & Crooked
Hood, Mile Creeks & Lower Deschutes
Lower Columbia
Willamette
Rogue & Umpqua
Klamath
Lake County & Goose Lake
Harney
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Utah
Bear River
Weber & Ogden Watersheds
Utah Lake, Jordan River & Tooele Valley
Sevier & Beaver Rivers
E. Garfield, Kane, Washington, & San Juan Co.
Uintah & Dagget SCD's
Carbon, Emery, Wayne, Grand, & San Juan Co.
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Washington
Spokane River
Colville - Pend Oreille Rivers
Okanogan - Methow Rivers
Wenatchee - Chelan Rivers
Upper Yakima River
Lower Yakima River
Walla Walla River
Lower Snake River
Cowlitz - Lewis Rivers
White - Green - Puyallup Rivers
Central Puget Sound River
North Puget Sound River
Olympic Peninsula River
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
Wyoming
Snake River
Madison-Gallatin
Yellowstone
Wind River
Bighorn Basin
Shoshone River
Powder River
Tongue River
Belle Fourche
Cheyenne
Upper North Platte
Sweetwater
Lower North Platte
Laramie River
South Platte
Little Snake River
Upper Green River
Lower Green River
Upper Bear River
January
February
March
April
May
June
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
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