SNOTEL (SNOwpack TELemetry) Snowpack Report - Western United States

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SNOTEL (SNOwpack TELemetry) Snowpack Report - Western United States

Denver Seasonal Snow Totals
Colorado Ski Conditions

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: MARCH 1 , 2021
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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     115        97 
  SUSITNA BASIN ................................  3 of  5     113        88 
  NORTHERN KENAI MOUNTAINS .....................  7 of  7     120       104 
  SOUTHERN KENAI ...............................  3 of  6     140       105 
  COPPER BASIN .................................  2 of  3     116        97 
  PRINCE WILLIAM SOUND .........................  1 of  7        *         *
  CHENA BASIN ..................................  5 of  7     113        97 
  UPPER TANANA .................................  2 of  4      80          *
  KOYUKUK BASIN ................................  2 of  6        *       58 
  CENTRAL YUKON BASIN ..........................  0 of  5        *         *
  NORTON SOUND .................................  0 of  4        *       77 
  KUPARUK-SAGAVANIRKTOK RIVER BASIN ............  0 of  3        *       62 
  NORTHWEST ARCTIC RIVER BASIN .................  0 of  1        *         *
  SOUTHEAST ALASKA BASIN .......................  1 of  3        *         *
ARIZONA
  VERDE RIVER BASIN ............................  5 of 10      64        49 
  SAN FRANCISCO PEAKS ..........................  1 of  1      69          *
  CENTRAL MOGOLLON RIM .........................  2 of  4      59        39 
  LITTLE COLORADO RIVER BASIN ..................  6 of 11      49          *
  SALT RIVER BASIN .............................  8 of 10      23        45 
  SAN FRANCISCO / UPPER GILA RIVER BASIN .......  7 of  8      31        49 
  CHUSKA MOUNTAINS .............................  0 of  2        *         *
CALIFORNIA
  NORTHERN GREAT BASIN .........................  7 of  8      97        87 
  TRUCKEE RIVER ................................ 11 of 12      71        58 
  LAKE TAHOE ................................... 11 of 11      71        59 
  CARSON RIVER ................................. 12 of 12      73        62 
  WALKER RIVER .................................  7 of  7      63        63 
COLORADO
  GUNNISON RIVER BASIN ......................... 13 of 16      80        69 
  UPPER COLORADO RIVER BASIN ................... 31 of 35      84        75 
  SOUTH PLATTE RIVER BASIN ..................... 17 of 22      90        87 
  LARAMIE AND NORTH PLATTE RIVER BASINS ........ 11 of 12      92        89 
  YAMPA AND WHITE RIVER BASINS ................. 20 of 22      88        81 
  ARKANSAS RIVER BASIN .........................  9 of 11      90        84 
  UPPER RIO GRANDE BASIN ....................... 13 of 19      98        83 
  SAN MIGUEL, DOLORES, ANIMAS
     AND SAN JUAN RIVER BASIN .................. 19 of 21      78        65 
IDAHO
  NORTHERN PANHANDLE REGION ....................  9 of 10      95        94 
  COEUR D'ALENE-ST. JOE RIVER BASIN ............  7 of  7     104        96 
  CLEARWATER BASIN ............................. 15 of 16     114       106 
  SALMON BASIN ................................. 20 of 20     102        88 
  WEISER BASIN .................................  4 of  4     106        91 
  PAYETTE BASIN ................................ 12 of 12     104        86 
  BOISE BASIN ..................................  9 of 10      98        90 
  BIG WOOD BASIN ...............................  7 of  8      84        74 
  LITTLE WOOD BASIN ............................  4 of  4      67        65 
  BIG LOST BASIN ...............................  5 of  5      69        63 
  LITTLE LOST, BIRCH BASINS ....................  4 of  4      88        76 
  MEDICINE LODGE, BEAVER, CAMAS BASINS .........  2 of  2      73        68 
  HENRYS FORK, TETON BASINS ....................  8 of  8      98        90 
  SNAKE BASIN ABOVE PALISADES .................. 21 of 21     103        92 
  WILLOW, BLACKFOOT, PORTNEUF BASINS ...........  6 of  6      92        81 
  SNAKE BASIN ABOVE AMERICAN FALLS ............. 29 of 29      99        89 
  RAFT BASIN ...................................  1 of  2     100        93 
  GOOSE CREEK BASIN ............................  2 of  2      98        88 
  SALMON FALLS BASIN ...........................  4 of  6      98        92 
  BRUNEAU BASIN ................................  5 of  8      92        93 
  OWYHEE BASIN .................................  7 of 12      83        79 
  BEAR RIVER BASIN ............................. 17 of 22      85        80 
MONTANA
  KOOTENAI RIVER BASIN .........................  8 of  8      90       101 
  FLATHEAD RIVER BASIN ......................... 12 of 17     104       109 
  UPPER CLARK FORK RIVER BASIN ................. 12 of 14     109       105 
  BITTERROOT RIVER BASIN .......................  8 of  8     116       116 
  LOWER CLARK FORK RIVER BASIN .................  9 of  9      95        94 
  JEFFERSON RIVER BASIN ........................ 19 of 20     100        98 
  MADISON RIVER BASIN .......................... 12 of 12      92        91 
  GALLATIN RIVER BASIN .........................  7 of  7     103       108 
  MISSOURI HEADWATERS .......................... 31 of 31      99        98 
  HELENA VALLEY ................................  4 of  4     109       110 
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS ..  8 of  9     108        98 
  SUN, TETON AND MARIAS RIVER BASINS ...........  5 of  6     106       115 
  MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21     108       110 
  ST. MARYS RIVER BASIN ........................  2 of  2     110       108 
  MILK RIVER BASIN .............................  1 of  1     125       152 
  UPPER YELLOWSTONE RIVER BASIN ................ 21 of 22     109       109 
  WIND RIVER BASIN (WYOMING) ................... 10 of 13      86        85 
  SHOSHONE RIVER BASIN (WYOMING) ...............  5 of  6     111       114 
  BIGHORN RIVER BASIN (WYOMING) ................ 22 of 26      96        92 
  TONGUE RIVER BASIN (WYOMING) .................  6 of  7     103       103 
  POWDER RIVER BASIN (WYOMING) .................  6 of  7      99        90 
  LOWER YELLOWSTONE RIVER BASIN ................ 29 of 35      97        95 
NEVADA
  NORTHERN GREAT BASIN .........................  7 of  8      97        87 
  SNAKE RIVER ..................................  7 of 11      94        91 
  OWYHEE RIVER .................................  5 of 10      87        80 
  UPPER HUMBOLDT RIVER .........................  8 of 16      89        81 
  LOWER HUMBOLDT RIVER .........................  5 of 10     107        94 
  CLOVER VALLEY & FRANKLIN RIVER ...............  3 of  6      91        76 
  EASTERN NEVADA BASINS ........................  4 of 14        *         *
NEW MEXICO
  RIO CHAMA RIVER BASIN ........................  4 of  5      77        74 
  UPPER RIO GRANDE BASIN - New Mexico ..........  5 of 11        *         *
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS .......  8 of 11      77        75 
  JEMEZ RIVER BASIN ............................  3 of  4      61        81 
  SAN FRANCISCO RIVER BASIN ....................  5 of  6      37        48 
  GILA RIVER BASIN .............................  3 of  3      52        58 
  MIMBRES RIVER BASIN ..........................  2 of  2      26        51 
  PECOS RIVER BASIN ............................  3 of  3      42        53 
  SAN JUAN RIVER BASIN ......................... 12 of 13      82        68 
  ANIMAS RIVER BASIN ...........................  7 of  7      76        61 
  CANADIAN RIVER BASIN .........................  3 of  6      71        74 
  ZUNI/BLUEWATER RIVER BASIN ...................  1 of  1      47        64 
  RIO HONDO BASIN ..............................  1 of  1       3        57 
  CHUSKA MOUNTAINS .............................  0 of  2        *         *
OREGON
  OWYHEE .......................................  7 of 12      83        79 
  MALHEUR ......................................  3 of  3     117        93 
  GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 17 of 19     130       112 
  UMATILLA, WALLA WALLA, WILLOW ................  9 of 10     143       117 
  JOHN DAY ..................................... 13 of 13     126       100 
  UPPER DESCHUTES, CROOKED ..................... 13 of 14     107        96 
  HOOD, SANDY, LOWER DESCHUTES .................  9 of  9     125       110 
  COAST RANGE ..................................  1 of  2        *      107 
  WILLAMETTE ................................... 18 of 23     109       101 
  ROGUE, UMPQUA ................................ 12 of 13      91        84 
  KLAMATH ...................................... 16 of 20      83        75 
  LAKE COUNTY, GOOSE LAKE ......................  6 of  7      79        67 
  HARNEY ....................................... 11 of 12     112        94 
UTAH
  RAFT RIVER ...................................  1 of  2     100        93 
  BEAR RIVER ................................... 19 of 25      84        79 
  WEBER-OGDEN RIVERS ........................... 18 of 22      76        70 
  PROVO R.-UTAH LAKE-JORDAN R. ................. 19 of 24      77        71 
  TOOELE VALLEY-VERNON CREEK ...................  3 of  4      88        72 
  NORTHEASTERN UINTAHS .........................  7 of 12      73        72 
  DUCHESNE RIVER ............................... 13 of 15      69        64 
  PRICE-SAN RAFAEL .............................  7 of 14      68        65 
  DIRTY DEVIL ..................................  6 of 11      88        75 
  SOUTH EASTERN UTAH ...........................  4 of 10        *         *
  UPPER SEVIER RIVER ........................... 14 of 23      75        67 
  SAN PITCH RIVER ..............................  6 of 12      76        68 
  LOWER SEVIER RIVER ...........................  2 of  5        *         *
  BEAVER RIVER .................................  3 of  3      74        70 
  ESCALANTE RIVER ..............................  4 of  5      71        55 
  SOUTHWESTERN UTAH ............................ 10 of 13      62        56 
WASHINGTON
  SPOKANE ......................................  9 of  9     104        97 
  LOWER PEND OREILLE ...........................  5 of  5      98        92 
  UPPER COLUMBIA ...............................  6 of  9     130       113 
  CENTRAL COLUMBIA .............................  9 of 11     124       108 
  UPPER YAKIMA .................................  5 of  7     127       112 
  NACHES .......................................  5 of  8     128       103 
  LOWER YAKIMA .................................  2 of  4     116       101 
  KLICKITAT ....................................  2 of  4     132        95 
  LOWER SNAKE, WALLA WALLA ..................... 12 of 14     132       115 
  LOWER COLUMBIA ............................... 11 of 17     133       107 
  SOUTH PUGET SOUND ............................  9 of 14     142       117 
  CENTRAL PUGET SOUND ..........................  8 of  9     146       126 
  NORTH PUGET SOUND ............................  8 of 13     131       110 
  OLYMPIC ......................................  1 of  4        *         *
WYOMING
  SNAKE RIVER .................................. 22 of 22     103        93 
  MADISON HEADWATERS IN WYOMING ................  5 of  5      93        86 
  YELLOWSTONE HEADWATERS IN WYOMING ............ 12 of 12     110       108 
  WIND RIVER ...................................  9 of 12      81        80 
  BIGHORN BASIN ................................ 10 of 11      96        85 
  SHOSHONE RIVER ...............................  5 of  6     111       114 
  POWDER RIVER .................................  6 of  7      99        90 
  TONGUE RIVER .................................  6 of  7     103       103 
  BELLE FOURCHE ................................  3 of  3      76        81 
  CHEYENNE RIVER BASIN .........................  2 of  2      78        81 
  UPPER N. PLATTE .............................. 18 of 20      92        89 
  SWEETWATER ...................................  3 of  3      68        65 
  LOWER N. PLATTE ..............................  4 of  4      74        74 
  LARAMIE RIVER ................................  7 of  7      92        93 
  S. PLATTE ....................................  1 of  1      31        76 
  LITTLE SNAKE RIVER ...........................  8 of  9      95        87 
  UPPER GREEN RIVER ............................ 14 of 15      97        89 
  LOWER GREEN RIVER ............................  7 of 12      93        89 
  UPPER BEAR RIVER ............................. 11 of 13      85        81 
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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

Colorado snowpack map
River Basin Snow Water Content

SNOTEL River Basin Snow Water Content
River Basin Snow Water Content (Numeric)

SNOTEL - River Basin Snow Water Content (Numeric)
Data courtesy the Western Regional Climate Center