Western US SNOTEL Snow/Precipitation Update Report
Based on Mountain Data from NRCS SNOTEL Sites
**Provisional data, subject to revision**
Data based on the first reading of the day (typically 00:00) for Tuesday, June 15, 2021
State
  River Basin
Snow Water
Equivalent
Water Year-to-Date
Precipitation
# of
Sites
Percent of
Median
# of
Sites
Percent of
Median
ALASKA
  ANCHORAGE/SHIP CREEK BASIN 4/4 *   4/4 93   
  SUSITNA BASIN 2/5 *   4/5 91   
  NORTHERN KENAI MOUNTAINS 6/7 415*   5/7 92   
  SOUTHERN KENAI 3/6 *   5/6 97   
  COPPER BASIN 2/3 *   2/3 97   
  PRINCE WILLIAM SOUND 1/7 *   3/7 93   
  CHENA BASIN 5/7 *   6/7 104   
  UPPER TANANA 2/4 *   2/4 114   
  KOYUKUK BASIN 2/6 *   4/6 89   
  CENTRAL YUKON BASIN 0/5 *   2/5 77   
  NORTON SOUND 0/4 *   2/4 102   
  KUPARUK-SAGAVANIRKTOK RIVER BASIN 0/3 *   3/3 85   
  NORTHWEST ARCTIC RIVER BASIN 1/1 *   1/1 82   
  SOUTHEAST ALASKA BASIN 1/3 *   2/3 127   
ARIZONA
  VERDE RIVER BASIN 9/10 *   8/10 58   
  SAN FRANCISCO PEAKS 1/1 *   1/1 71   
  CENTRAL MOGOLLON RIM 4/4 *   3/4 52   
  LITTLE COLORADO RIVER BASIN 11/11 *   10/11 59   
  SALT RIVER BASIN 9/10 *   7/10 51   
  SAN FRANCISCO / UPPER GILA RIVER BASIN 8/8 *   5/8 61   
  CHUSKA MOUNTAINS 2/2 *   2/2 81   
CALIFORNIA
  NORTHERN GREAT BASIN 7/8 *   7/8 79   
  TRUCKEE RIVER 11/12 0*   11/12 55   
  LAKE TAHOE 11/11 *   11/11 58   
  CARSON RIVER 12/12 *   12/12 66   
  WALKER RIVER 7/7 0*   7/7 65   
COLORADO
  GUNNISON RIVER BASIN 15/16 *   15/16 77   
  UPPER COLORADO RIVER BASIN 32/35 0*   32/35 77   
  SOUTH PLATTE RIVER BASIN 21/22 0*   21/22 95   
  LARAMIE AND NORTH PLATTE RIVER BASINS 12/12 0*   12/12 80   
  YAMPA AND WHITE RIVER BASINS 20/22 0*   21/22 70   
  ARKANSAS RIVER BASIN 11/11 0*   11/11 96   
  UPPER RIO GRANDE BASIN 17/20 0*   18/20 93   
  SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS 20/21 0*   20/21 74   
IDAHO
  NORTHERN PANHANDLE REGION 10/10 1*   9/10 78   
  COEUR D'ALENE-ST. JOE RIVER BASIN 7/7 34*   7/7 82   
  CLEARWATER BASIN 15/16 51*   16/16 88   
  SALMON BASIN 20/20 0*   20/20 76   
  WEISER BASIN 4/4 *   4/4 77   
  PAYETTE BASIN 12/12 0*   12/12 76   
  BOISE BASIN 10/11 0*   10/11 76   
  BIG WOOD BASIN 8/9 *   8/9 66   
  LITTLE WOOD BASIN 4/5 *   4/5 59   
  BIG LOST BASIN 5/5 *   5/5 59   
  LITTLE LOST 3/3 *   3/3 70   
  BIRCH, MEDICINE LODGE, BEAVER, CAMAS BASINS 4/4 *   4/4 68   
  HENRYS FORK, TETON BASINS 8/8 2*   8/8 81   
  SNAKE BASIN ABOVE PALISADES 21/21 0*   21/21 83   
  WILLOW, BLACKFOOT, PORTNEUF BASINS 6/7 *   6/7 71   
  SNAKE BASIN ABOVE AMERICAN FALLS 29/29 1*   29/29 79   
  RAFT BASIN 2/2 *   2/2 70   
  GOOSE CREEK BASIN 2/2 *   2/2 70   
  SALMON FALLS BASIN 4/6 *   4/6 72   
  BRUNEAU BASIN 5/8 *   5/8 72   
  OWYHEE BASIN 8/12 *   9/12 71   
  BEAR RIVER BASIN 21/21 *   21/21 72   
MONTANA
  KOOTENAI RIVER BASIN 8/8 0*   8/8 87   
  FLATHEAD RIVER BASIN 14/17 61    14/17 95   
  UPPER CLARK FORK RIVER BASIN 14/14 77*   14/14 94   
  BITTERROOT RIVER BASIN 8/8 0*   8/8 97   
  LOWER CLARK FORK RIVER BASIN 9/9 40*   9/9 81   
  JEFFERSON RIVER BASIN 19/21 14*   19/21 82   
  MADISON RIVER BASIN 11/12 3*   11/12 82   
  GALLATIN RIVER BASIN 7/7 4*   7/7 86   
  MISSOURI HEADWATERS 31/31 7*   31/31 83   
  HELENA VALLEY 4/4 *   4/4 86   
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS 7/9 0*   7/9 83   
  SUN, TETON AND MARIAS RIVER BASINS 5/6 0*   5/6 98   
  MISSOURI MAINSTEM RIVER BASIN 18/21 0*   18/21 90   
  ST. MARYS RIVER BASIN 2/2 81    2/2 89   
  MILK RIVER BASIN 1/1 *   1/1 109   
  UPPER YELLOWSTONE RIVER BASIN 21/22 2*   21/22 89   
  WIND RIVER BASIN (WYOMING) 11/13 0*   11/13 94   
  SHOSHONE RIVER BASIN (WYOMING) 6/6 0*   6/6 91   
  BIGHORN RIVER BASIN (WYOMING) 24/26 0*   24/26 90   
  TONGUE RIVER BASIN (WYOMING) 7/7 *   7/7 91   
  POWDER RIVER BASIN (WYOMING) 7/7 *   7/7 94   
  LOWER YELLOWSTONE RIVER BASIN 33/35 0*   33/35 92   
NEVADA
  NORTHERN GREAT BASIN 7/8 *   7/8 79   
  SNAKE RIVER 7/11 *   7/11 72   
  OWYHEE RIVER 6/10 *   7/10 71   
  UPPER HUMBOLDT RIVER 9/16 *   10/16 75   
  LOWER HUMBOLDT RIVER 6/10 *   7/10 89   
  CLOVER VALLEY & FRANKLIN RIVER 5/6 *   5/6 79   
  EASTERN NEVADA BASINS 5/14 *   5/14 85   
  SOUTHERN NEVADA - Spring Mountains 3/3 *   3/3 61   
NEW MEXICO
  RIO CHAMA RIVER BASIN 4/5 *   4/5 85   
  UPPER RIO GRANDE BASIN - New Mexico 10/12 *   10/12 88   
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS 10/11 *   10/11 87   
  JEMEZ RIVER BASIN 3/4 *   3/4 68   
  SAN FRANCISCO RIVER BASIN 6/6 *   5/6 61   
  GILA RIVER BASIN 3/3 *   1/3 76   
  MIMBRES RIVER BASIN 2/2 *   1/2 61   
  PECOS RIVER BASIN 3/3 *   3/3 62   
  SAN JUAN RIVER BASIN 13/13 0*   13/13 77   
  ANIMAS RIVER BASIN 7/7 *   7/7 70   
  CANADIAN RIVER BASIN 6/7 *   6/7 96   
  ZUNI/BLUEWATER RIVER BASIN 1/1 *   0/1 *  
  RIO HONDO BASIN 1/1 *   1/1 73   
  CHUSKA MOUNTAINS 2/2 *   2/2 81   
OREGON
  OWYHEE 8/12 *   9/12 71   
  MALHEUR 3/3 *   3/3 77   
  GRANDE RONDE, POWDER, BURNT, IMNAHA 18/19 *   18/19 87   
  UMATILLA, WALLA WALLA, WILLOW 10/10 *   10/10 90   
  JOHN DAY 13/13 *   13/13 81   
  UPPER DESCHUTES, CROOKED 14/14 15*   14/14 83   
  HOOD, SANDY, LOWER DESCHUTES 9/9 70*   9/9 93   
  COAST RANGE 2/2 *   2/2 100   
  WILLAMETTE 20/23 15*   20/23 87   
  ROGUE, UMPQUA 12/13 16*   12/13 72   
  KLAMATH 18/20 *   18/20 65   
  LAKE COUNTY, GOOSE LAKE 6/7 *   6/7 63   
  HARNEY 11/12 *   11/12 82   
UTAH
  RAFT RIVER 2/2 *   2/2 70   
  BEAR RIVER 25/26 *   25/26 71   
  WEBER-OGDEN RIVERS 20/23 *   20/23 68   
  PROVO R.-UTAH LAKE-JORDAN R. 19/24 *   19/24 70   
  TOOELE VALLEY-VERNON CREEK 3/4 *   3/4 66   
  NORTHEASTERN UINTAHS 11/13 *   11/13 82   
  DUCHESNE RIVER 14/15 *   14/15 70   
  PRICE-SAN RAFAEL 8/14 *   8/14 65   
  DIRTY DEVIL 5/9 *   5/9 70   
  SOUTH EASTERN UTAH 5/11 *   5/11 72   
  UPPER SEVIER RIVER 17/23 0*   18/23 65   
  SAN PITCH RIVER 6/12 *   6/12 64   
  LOWER SEVIER RIVER 3/5 *   3/5 67   
  BEAVER RIVER 3/3 0*   3/3 72   
  ESCALANTE RIVER 4/5 *   4/5 62   
  SOUTHWESTERN UTAH 10/13 *   10/13 60   
WASHINGTON
  SPOKANE 9/9 34*   9/9 82   
  LOWER PEND OREILLE 5/5 0*   5/5 75   
  UPPER COLUMBIA 7/9 167*   7/9 94   
  CENTRAL COLUMBIA 11/11 77*   11/11 98   
  UPPER YAKIMA 6/7 *   7/7 96   
  NACHES 7/8 65*   7/8 95   
  LOWER YAKIMA 3/4 *   3/4 73   
  KLICKITAT 4/5 *   4/5 77   
  LOWER SNAKE, WALLA WALLA 13/14 *   13/14 88   
  LOWER COLUMBIA 14/17 158*   14/17 91   
  SOUTH PUGET SOUND 12/14 119*   12/14 98   
  CENTRAL PUGET SOUND 8/9 210*   9/9 101   
  NORTH PUGET SOUND 12/13 108    11/13 97   
  OLYMPIC 4/4 210*   4/4 92   
WYOMING
  SNAKE RIVER 22/22 1*   22/22 82   
  MADISON HEADWATERS IN WYOMING 4/5 0*   4/5 81   
  YELLOWSTONE HEADWATERS IN WYOMING 11/12 2    11/12 91   
  WIND RIVER 9/11 0*   9/11 93   
  BIGHORN BASIN 11/11 0*   11/11 87   
  SHOSHONE RIVER 6/6 0*   6/6 91   
  POWDER RIVER 7/7 *   7/7 94   
  TONGUE RIVER 7/7 *   7/7 91   
  BELLE FOURCHE 3/3 *   3/3 78   
  CHEYENNE RIVER BASIN 2/2 *   2/2 83   
  UPPER N. PLATTE 19/20 1*   19/20 78   
  SWEETWATER 3/3 *   3/3 82   
  LOWER N. PLATTE 4/4 *   4/4 81   
  LARAMIE RIVER 7/7 *   7/7 89   
  S. PLATTE 1/1 *   1/1 84   
  LITTLE SNAKE RIVER 8/9 0*   8/9 73   
  UPPER GREEN RIVER 14/15 0*   14/15 82   
  LOWER GREEN RIVER 10/12 *   10/12 85   
  UPPER BEAR RIVER 12/12 *   12/12 74