SNOTEL (SNOwpack TELemetry) Snowpack Report - Western United States

SNOTEL Western U.S. Maps


United States           Natural Resources             Water and Climate Center
Department of           Conservation                          Portland, Oregon
Agriculture             Service                                               
 
          S N O W  -  P R E C I P I T A T I O N    U P D A T E
 
              Based on Mountain Data from NRCS SNOTEL Sites
                    As of MONDAY: APRIL 6 , 2020
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STATE                                                      PERCENT OF Normal
  RIVER BASIN                                     Number   Snow Water  Accum
                                                 of Sites  Equivalent  Precip
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ALASKA
  ANCHORAGE/SHIP CREEK BASIN ...................  4 of  4      77       105 
  SUSITNA BASIN ................................  3 of  5     179       176 
  NORTHERN KENAI MOUNTAINS .....................  7 of  7      54        95 
  SOUTHERN KENAI ...............................  3 of  6      90       120 
  COPPER BASIN .................................  2 of  3     118        97 
  PRINCE WILLIAM SOUND .........................  1 of  7        *      104 
  CHENA BASIN ..................................  2 of  7        *         *
  UPPER TANANA .................................  2 of  4     142          *
  KOYUKUK BASIN ................................  2 of  6        *      142 
  CENTRAL YUKON BASIN ..........................  0 of  5        *         *
  NORTON SOUND .................................  0 of  4        *      115 
  KUPARUK-SAGAVANIRKTOK RIVER BASIN ............  0 of  3        *       85 
  NORTHWEST ARCTIC RIVER BASIN .................  0 of  1        *         *
  SOUTHEAST ALASKA BASIN .......................  1 of  3        *      105 
ARIZONA
  VERDE RIVER BASIN ............................  5 of 10      80*      111 
  SAN FRANCISCO PEAKS ..........................  1 of  1     120       100 
  CENTRAL MOGOLLON RIM .........................  3 of  4       2*      112 
  LITTLE COLORADO - SOUTHERN HEADWATERS ........  5 of  6       6       106 
  UPPER SALT RIVER BASIN / WHITE MOUNTAINS .....  7 of  9       6*      102 
  SAN FRANCISCO / UPPER GILA RIVER BASIN .......  7 of  8       4*      110 
  CHUSKA MOUNTAINS .............................  0 of  2        *         *
CALIFORNIA
  NORTHERN GREAT BASIN .........................  7 of  8     110        80 
  TRUCKEE RIVER ................................ 11 of 12      78        65 
  LAKE TAHOE ................................... 11 of 11      79        65 
  CARSON RIVER ................................. 12 of 12      85        67 
  WALKER RIVER .................................  7 of  7      60        54 
COLORADO
  GUNNISON RIVER BASIN ......................... 13 of 16      94        80 
  UPPER COLORADO RIVER BASIN ................... 27 of 31     108        92 
  SOUTH PLATTE RIVER BASIN ..................... 17 of 22     113       104 
  LARAMIE AND NORTH PLATTE RIVER BASINS ........ 11 of 12     110       103 
  YAMPA AND WHITE RIVER BASINS ................. 19 of 20     109        99 
  ARKANSAS RIVER BASIN .........................  7 of  9      97        85 
  UPPER RIO GRANDE BASIN ....................... 11 of 16      96        74 
  SAN MIGUEL, DOLORES, ANIMAS
     AND SAN JUAN RIVER BASIN .................. 17 of 19      94        78 
IDAHO
  NORTHERN PANHANDLE REGION .................... 10 of 10     121        99 
  SPOKANE RIVER BASIN .......................... 10 of 10     114        91 
  CLEARWATER BASIN ............................. 15 of 16     116        92 
  SALMON BASIN ................................. 22 of 22     102        86 
  WEISER BASIN .................................  4 of  4     103        81 
  PAYETTE BASIN ................................ 11 of 11      99        80 
  BOISE BASIN ..................................  9 of 10      90        76 
  BIG WOOD BASIN ...............................  8 of  9      78        66 
  LITTLE WOOD BASIN ............................  5 of  5      75        65 
  BIG LOST BASIN ...............................  5 of  5      79        68 
  LITTLE LOST, BIRCH BASINS ....................  4 of  4     103        85 
  MEDICINE LODGE, BEAVER, CAMAS BASINS .........  4 of  4     104        95 
  HENRYS FORK, TETON BASINS ....................  8 of  8     106        92 
  SNAKE BASIN ABOVE PALISADES .................. 18 of 18     116        99 
  WILLOW, BLACKFOOT, PORTNEUF BASINS ...........  6 of  6     119        90 
  SNAKE BASIN ABOVE AMERICAN FALLS ............. 29 of 29     114        95 
  RAFT BASIN ...................................  1 of  2     101        92 
  GOOSE CREEK BASIN ............................  2 of  2     122       100 
  SALMON FALLS BASIN ...........................  5 of  6     112        96 
  BRUNEAU BASIN ................................  5 of  6     109        96 
  OWYHEE BASIN .................................  7 of  8     110        85 
  BEAR RIVER BASIN ............................. 15 of 15     113        96 
MONTANA
  KOOTENAI RIVER BASIN .........................  8 of  8     115        93 
  FLATHEAD RIVER BASIN ......................... 13 of 16     117        99 
  UPPER CLARK FORK RIVER BASIN ................. 13 of 15     109        92 
  BITTERROOT RIVER BASIN .......................  7 of  7     115        92 
  LOWER CLARK FORK RIVER BASIN .................  8 of  8     110        89 
  JEFFERSON RIVER BASIN ........................ 19 of 19     108        95 
  MADISON RIVER BASIN .......................... 11 of 11     105        91 
  GALLATIN RIVER BASIN .........................  7 of  7     116       112 
  MISSOURI HEADWATERS .......................... 31 of 31     109        97 
  HEADWATERS MISSOURI MAINSTEM .................  5 of  5     106        98 
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS ..  9 of 10     117        98 
  SUN, TETON AND MARIAS RIVER BASINS ...........  5 of  6     120        94 
  MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21     118        98 
  ST. MARY AND MILK RIVER BASINS ...............  3 of  3     137       110 
  UPPER YELLOWSTONE RIVER BASIN ................ 23 of 24     119       106 
  WIND RIVER BASIN (WYOMING) ................... 11 of 13     110        87 
  SHOSHONE RIVER BASIN (WYOMING) ...............  5 of  6     115       106 
  BIGHORN RIVER BASIN (WYOMING) ................ 15 of 16     114       103 
  TONGUE RIVER BASIN (WYOMING) .................  6 of  7     108        93 
  POWDER RIVER BASIN (WYOMING) .................  6 of  7     114       104 
  LOWER YELLOWSTONE RIVER BASIN ................ 30 of 35     110        96 
NEVADA
  NORTHERN GREAT BASIN .........................  7 of  8     110        80 
  SNAKE RIVER ..................................  7 of 11     113        97 
  OWYHEE RIVER .................................  5 of  5     118        87 
  UPPER HUMBOLDT RIVER .........................  9 of  9      94        79 
  LOWER HUMBOLDT RIVER .........................  5 of 10     102        75 
  CLOVER VALLEY & FRANKLIN RIVER ...............  4 of  6      74        73 
  EASTERN NEVADA BASINS ........................  4 of  4      79        69 
NEW MEXICO
  RIO CHAMA RIVER BASIN ........................  4 of  4      73        74 
  UPPER RIO GRANDE BASIN .......................  9 of  9      89        72 
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS .......  9 of 11      95        89 
  JEMEZ RIVER BASIN ............................  3 of  3      43        73 
  SAN FRANCISCO RIVER BASIN ....................  3 of  3       6*      111 
  GILA RIVER BASIN .............................  3 of  3       5*      106 
  MIMBRES RIVER BASIN ..........................  2 of  2        *      120 
  PECOS RIVER BASIN ............................  1 of  1      92        78 
  SAN JUAN RIVER HEADWATERS ....................  5 of  5      92        73 
  ANIMAS RIVER BASIN ...........................  7 of  7      98        85 
  CIMARRON RIVER BASIN .........................  2 of  2      98        95 
  ZUNI/BLUEWATER RIVER BASIN ...................  0 of  1        *       89 
  RIO HONDO BASIN ..............................  1 of  1       0       150 
  CHUSKA MOUNTAINS .............................  0 of  1        *         *
OREGON
  OWYHEE .......................................  7 of  8     110        85 
  MALHEUR ......................................  3 of  3     102        85 
  GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 15 of 17     126       101 
  UMATILLA, WALLA WALLA, WILLOW ................  7 of  8     143       102 
  JOHN DAY ..................................... 13 of 13     125        88 
  UPPER DESCHUTES, CROOKED ..................... 14 of 14      99        76 
  HOOD, SANDY, LOWER DESCHUTES .................  7 of  8     110        86 
  COAST RANGE ..................................  1 of  2        *       88 
  WILLAMETTE ................................... 18 of 23     110        78 
  ROGUE, UMPQUA ................................ 12 of 12      87        69 
  KLAMATH ...................................... 16 of 18      88        69 
  LAKE COUNTY, GOOSE LAKE ......................  9 of  9      95        72 
  HARNEY .......................................  9 of  9     106        85 
UTAH
  RAFT RIVER ...................................  1 of  2     101        92 
  BEAR RIVER ................................... 18 of 24     112        95 
  WEBER-OGDEN RIVERS ........................... 17 of 20      98        90 
  PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17     104        86 
  TOOELE VALLEY-VERNON CREEK ...................  3 of  4     103        79 
  NORTHEASTERN UINTAHS .........................  6 of 10     127       107 
  DUCHESNE RIVER ............................... 12 of 13     110        91 
  PRICE-SAN RAFAEL .............................  6 of 11     102        88 
  DIRTY DEVIL ..................................  3 of  6      96        94 
  SOUTH EASTERN UTAH ...........................  3 of  7        *         *
  UPPER SEVIER RIVER ........................... 11 of 17     110        94 
  SAN PITCH RIVER ..............................  5 of 11        *         *
  LOWER SEVIER RIVER ...........................  1 of  3        *         *
  BEAVER RIVER .................................  2 of  2      97        86 
  ESCALANTE RIVER ..............................  3 of  4     116        94 
  SOUTHWESTERN UTAH ............................ 10 of 13     133        99 
WASHINGTON
  NORTHERN PANHANDLE ........................... 10 of 10     121        99 
  SPOKANE ...................................... 10 of 10     114        91 
  UPPER COLUMBIA ...............................  5 of  6     102        83 
  CENTRAL COLUMBIA .............................  7 of  8      99        94 
  UPPER YAKIMA .................................  4 of  5      90       101 
  LOWER YAKIMA .................................  7 of  9     112        94 
  LOWER SNAKE .................................. 20 of 22     116        95 
  LOWER COLUMBIA ............................... 17 of 22     114        92 
  SOUTH PUGET SOUND ............................  7 of 10     125       112 
  CENTRAL PUGET SOUND ..........................  8 of  9     118       119 
  NORTH PUGET SOUND ............................  8 of 12     112        98 
  OLYMPIC ......................................  3 of  4     110        76 
WYOMING
  SNAKE RIVER .................................. 20 of 20     115        97 
  MADISON-GALLATIN .............................  5 of  5     105        84 
  YELLOWSTONE .................................. 14 of 14     121       106 
  WIND RIVER ................................... 10 of 12     107        86 
  BIGHORN BASIN ................................ 10 of 11     112       101 
  SHOSHONE RIVER ...............................  5 of  6     115       106 
  POWDER RIVER .................................  6 of  7     114       104 
  TONGUE RIVER .................................  6 of  7     108        93 
  BELLE FOURCHE ................................  1 of  2      86        95 
  CHEYENNE RIVER BASIN .........................  2 of  2      97        78 
  UPPER N. PLATTE .............................. 16 of 19     111       103 
  SWEETWATER ...................................  3 of  3      82        66 
  LOWER N. PLATTE ..............................  4 of  4     124        98 
  LARAMIE RIVER ................................  7 of  7     114       102 
  S. PLATTE ....................................  2 of  3     115        98 
  LITTLE SNAKE RIVER ...........................  8 of  8     115        98 
  UPPER GREEN RIVER ............................ 13 of 14     106        92 
  LOWER GREEN RIVER ............................  7 of 11     115       100 
  UPPER BEAR RIVER .............................  8 of 10     108        94 
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   The Snow Water Equivalent Percent of Median represents the snow
   water equivalent found at selected SNOTEL sites in or near the
   basin compared to the Median value for those sites on this day.

   The Accumulated Precipitation Percent of Average represents the
   total precipitation (beginning October 1st) found at selected
   SNOTEL sites in or near the basin compared to the Average value
   for those sites on this day.

    * = Data are not available or data may not provide a valid measure 
        of conditions for over half of the sites within the basin.  
        Refer to the individual state reports for a complete data 
        listing and basin analysis.

Units = inches for the Current and Normal Snow Water Equivalent and
        Total Precipitation values

          Medians and averages are calculated for the period 1981-2010.

                   Provisional data, subject to revision.
                   
   * Site -- Either: (a) the current value is missing; (b) the median or 
   	 average for the day is not available or is zero; or (c) for snow water 
   	 equivalent, the median for the day is less than 10% of the maximum 
   	 median value for  the year.
   	 
   * Basin - More than half of the sites within the basin are flagged with *, 
     preventing the calculation of a meaningful basin index.  
     
   The basin index is calculated as the sum of the valid current values 
   divided by the sum of the corresponding medians (for snow water equivalent) 
   or averages (for precipitation) and the resulting fraction multiplied by 100.        
                   

Colorado Snow Water Content

River Basin Snow Water Content

River Basin Snow Water Content (Numeric)

Data courtesy the Western Regional Climate Center