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 Thursday, February 01, 2018
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 58    4/4 87   
  SUSITNA BASIN 2/5 82    4/5 113   
  NORTHERN KENAI MOUNTAINS 5/7 66    6/7 93   
  SOUTHERN KENAI 3/6 71    5/6 102   
  COPPER BASIN 2/3 115    2/3 131   
  PRINCE WILLIAM SOUND 1/7 39    3/7 112   
  CHENA BASIN 5/7 166    6/7 178   
  UPPER TANANA 2/4 120    2/4 143   
  KOYUKUK BASIN 2/6 167    4/6 148   
  CENTRAL YUKON BASIN 0/5 *   3/5 162   
  NORTON SOUND 0/4 *   2/4 149   
  KUPARUK-SAGAVANIRKTOK RIVER BASIN 0/3 *   3/3 147   
  NORTHWEST ARCTIC RIVER BASIN 1/1 179    1/1 174   
  SOUTHEAST ALASKA BASIN 1/3 49    2/3 80   
ARIZONA
  VERDE RIVER BASIN 9/10 22    8/10 18   
  SAN FRANCISCO PEAKS 1/1 28    1/1 22   
  CENTRAL MOGOLLON RIM 4/4 25    4/4 15   
  LITTLE COLORADO RIVER BASIN 11/11 26    11/11 17   
  SALT RIVER BASIN 9/10 20    8/10 15   
  SAN FRANCISCO / UPPER GILA RIVER BASIN 8/8 14    5/8 15   
  CHUSKA MOUNTAINS 2/2 9    2/2 28   
CALIFORNIA
  NORTHERN GREAT BASIN 7/8 50    7/8 80   
  TRUCKEE RIVER 11/12 43    11/12 81   
  LAKE TAHOE 11/11 42    11/11 82   
  CARSON RIVER 12/12 44    12/12 72   
  WALKER RIVER 7/7 46    7/7 68   
COLORADO
  GUNNISON RIVER BASIN 15/16 50    15/16 50   
  UPPER COLORADO RIVER BASIN 32/35 71    32/35 77   
  SOUTH PLATTE RIVER BASIN 21/22 84    21/22 99   
  LARAMIE AND NORTH PLATTE RIVER BASINS 12/12 85    12/12 92   
  YAMPA AND WHITE RIVER BASINS 20/22 72    21/22 73   
  ARKANSAS RIVER BASIN 11/11 45    11/11 58   
  UPPER RIO GRANDE BASIN 17/20 38    18/20 43   
  SAN MIGUEL, DOLORES, ANIMAS AND SAN JUAN RIVER BASINS 20/21 37    20/21 30   
IDAHO
  NORTHERN PANHANDLE REGION 10/10 114    9/10 110   
  COEUR D'ALENE-ST. JOE RIVER BASIN 7/7 113    7/7 110   
  CLEARWATER BASIN 16/16 110    16/16 110   
  SALMON BASIN 20/20 98    20/20 97   
  WEISER BASIN 4/4 67    4/4 88   
  PAYETTE BASIN 12/12 84    12/12 93   
  BOISE BASIN 10/11 75    10/11 88   
  BIG WOOD BASIN 8/9 78    8/9 82   
  LITTLE WOOD BASIN 4/5 86    4/5 96   
  BIG LOST BASIN 5/5 94    5/5 98   
  LITTLE LOST 3/3 100    3/3 95   
  BIRCH, MEDICINE LODGE, BEAVER, CAMAS BASINS 4/4 96    4/4 89   
  HENRYS FORK, TETON BASINS 8/8 104    8/8 101   
  SNAKE BASIN ABOVE PALISADES 21/21 111    21/21 106   
  WILLOW, BLACKFOOT, PORTNEUF BASINS 5/7 75    6/7 84   
  SNAKE BASIN ABOVE AMERICAN FALLS 28/29 105    29/29 101   
  RAFT BASIN 2/2 77    2/2 70   
  GOOSE CREEK BASIN 2/2 63    2/2 77   
  SALMON FALLS BASIN 4/6 65    4/6 83   
  BRUNEAU BASIN 5/8 59    5/8 86   
  OWYHEE BASIN 8/12 45    9/12 87   
  BEAR RIVER BASIN 20/21 86    21/21 85   
MONTANA
  KOOTENAI RIVER BASIN 8/8 114    8/8 106   
  FLATHEAD RIVER BASIN 13/17 124    13/17 117   
  UPPER CLARK FORK RIVER BASIN 14/14 126    14/14 119   
  BITTERROOT RIVER BASIN 8/8 112    8/8 104   
  LOWER CLARK FORK RIVER BASIN 9/9 114    9/9 108   
  JEFFERSON RIVER BASIN 19/21 123    19/21 102   
  MADISON RIVER BASIN 11/12 120    11/12 106   
  GALLATIN RIVER BASIN 7/7 132    7/7 117   
  MISSOURI HEADWATERS 31/31 123    31/31 106   
  HELENA VALLEY 4/4 134    4/4 118   
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS 7/9 115    7/9 101   
  SUN, TETON AND MARIAS RIVER BASINS 4/6 113    4/6 120   
  MISSOURI MAINSTEM RIVER BASIN 17/21 122    17/21 114   
  ST. MARYS RIVER BASIN 2/2 101    2/2 108   
  MILK RIVER BASIN 1/1 112    1/1 156   
  UPPER YELLOWSTONE RIVER BASIN 21/22 145    21/22 130   
  WIND RIVER BASIN (WYOMING) 11/13 131    11/13 115   
  SHOSHONE RIVER BASIN (WYOMING) 6/6 140    6/6 131   
  BIGHORN RIVER BASIN (WYOMING) 24/26 128    24/26 112   
  TONGUE RIVER BASIN (WYOMING) 7/7 90    7/7 77   
  POWDER RIVER BASIN (WYOMING) 7/7 108    7/7 96   
  LOWER YELLOWSTONE RIVER BASIN 33/35 119    33/35 105   
NEVADA
  NORTHERN GREAT BASIN 7/8 50    7/8 80   
  SNAKE RIVER 7/11 60    7/11 83   
  OWYHEE RIVER 6/10 49    7/10 88   
  UPPER HUMBOLDT RIVER 10/16 47    10/16 78   
  LOWER HUMBOLDT RIVER 6/10 45    7/10 82   
  CLOVER VALLEY & FRANKLIN RIVER 6/6 43    5/6 75   
  EASTERN NEVADA BASINS 5/14 42    5/14 48   
  SOUTHERN NEVADA - Spring Mountains 3/3 22    3/3 46   
NEW MEXICO
  RIO CHAMA RIVER BASIN 4/5 30    4/5 35   
  UPPER RIO GRANDE BASIN - New Mexico 10/12 14    10/12 36   
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS 10/11 24    10/11 42   
  JEMEZ RIVER BASIN 3/4 19    3/4 22   
  SAN FRANCISCO RIVER BASIN 6/6 17    5/6 15   
  GILA RIVER BASIN 3/3 14    1/3 17   
  MIMBRES RIVER BASIN 2/2 0    1/2 20   
  PECOS RIVER BASIN 3/3 12    3/3 34   
  SAN JUAN RIVER BASIN 13/13 37    13/13 27   
  ANIMAS RIVER BASIN 7/7 38    7/7 28   
  CANADIAN RIVER BASIN 6/7 11    6/7 37   
  ZUNI/BLUEWATER RIVER BASIN 1/1 18    0/1 *  
  RIO HONDO BASIN 1/1 5    1/1 42   
  CHUSKA MOUNTAINS 2/2 9    2/2 28   
OREGON
  OWYHEE 8/12 45    9/12 87   
  MALHEUR 3/3 50    3/3 86   
  GRANDE RONDE, POWDER, BURNT, IMNAHA 19/19 77    19/19 97   
  UMATILLA, WALLA WALLA, WILLOW 10/10 79    10/10 106   
  JOHN DAY 13/13 58    13/13 86   
  UPPER DESCHUTES, CROOKED 14/14 54    14/14 87   
  HOOD, SANDY, LOWER DESCHUTES 9/9 65    9/9 102   
  COAST RANGE 2/2 2400*   2/2 116   
  WILLAMETTE 21/23 56    21/23 96   
  ROGUE, UMPQUA 12/13 51    12/13 79   
  KLAMATH 18/20 41    18/20 78   
  LAKE COUNTY, GOOSE LAKE 6/7 52    6/7 83   
  HARNEY 11/12 46    11/12 82   
UTAH
  RAFT RIVER 2/2 77    2/2 70   
  BEAR RIVER 24/26 83    25/26 83   
  WEBER-OGDEN RIVERS 20/23 59    20/23 66   
  PROVO R.-UTAH LAKE-JORDAN R. 19/24 54    19/24 59   
  TOOELE VALLEY-VERNON CREEK 3/4 49    3/4 51   
  NORTHEASTERN UINTAHS 11/13 80    11/13 68   
  DUCHESNE RIVER 14/15 59    14/15 60   
  PRICE-SAN RAFAEL 8/14 41    8/14 53   
  DIRTY DEVIL 5/9 35    5/9 49   
  SOUTH EASTERN UTAH 5/11 37    5/11 38   
  UPPER SEVIER RIVER 17/23 43    18/23 47   
  SAN PITCH RIVER 6/12 44    6/12 55   
  LOWER SEVIER RIVER 3/5 45    3/5 52   
  BEAVER RIVER 3/3 35    3/3 37   
  ESCALANTE RIVER 4/5 32    4/5 36   
  SOUTHWESTERN UTAH 10/13 36    10/13 40   
WASHINGTON
  SPOKANE 9/9 110    9/9 110   
  LOWER PEND OREILLE 5/5 115    5/5 108   
  UPPER COLUMBIA 7/9 127    7/9 115   
  CENTRAL COLUMBIA 11/11 109    11/11 113   
  UPPER YAKIMA 7/7 107    7/7 107   
  NACHES 7/8 104    6/8 113   
  LOWER YAKIMA 3/4 77    3/4 98   
  KLICKITAT 4/5 85    4/5 99   
  LOWER SNAKE, WALLA WALLA 14/14 80    14/14 100   
  LOWER COLUMBIA 15/17 108    14/17 112   
  SOUTH PUGET SOUND 12/14 100    11/14 115   
  CENTRAL PUGET SOUND 9/9 100    9/9 111   
  NORTH PUGET SOUND 12/13 117    11/13 113   
  OLYMPIC 4/4 124    4/4 113   
WYOMING
  SNAKE RIVER 22/22 111    22/22 106   
  MADISON HEADWATERS IN WYOMING 4/5 115    4/5 109   
  YELLOWSTONE HEADWATERS IN WYOMING 11/12 145    11/12 133   
  WIND RIVER 9/11 128    9/11 112   
  BIGHORN BASIN 11/11 119    11/11 96   
  SHOSHONE RIVER 6/6 140    6/6 131   
  POWDER RIVER 7/7 108    7/7 96   
  TONGUE RIVER 7/7 90    7/7 77   
  BELLE FOURCHE 3/3 105    3/3 101   
  CHEYENNE RIVER BASIN 2/2 100    2/2 102   
  UPPER N. PLATTE 19/20 85    19/20 89   
  SWEETWATER 3/3 92    3/3 82   
  LOWER N. PLATTE 4/4 76    4/4 75   
  LARAMIE RIVER 7/7 100    7/7 106   
  S. PLATTE 1/1 33    1/1 111   
  LITTLE SNAKE RIVER 8/9 70    8/9 73   
  UPPER GREEN RIVER 14/15 107    14/15 102   
  LOWER GREEN RIVER 10/12 89    10/12 76   
  UPPER BEAR RIVER 12/12 87    12/12 83