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 SUNDAY: DECEMBER 8 , 2019
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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      82       168 
  SUSITNA BASIN ................................  3 of  5     230       230 
  NORTHERN KENAI MOUNTAINS .....................  7 of  7      40       111 
  SOUTHERN KENAI ...............................  3 of  6     131*      127 
  COPPER BASIN .................................  2 of  3      82       111 
  PRINCE WILLIAM SOUND .........................  1 of  7        *         *
  CHENA BASIN ..................................  1 of  7        *         *
  UPPER TANANA .................................  2 of  4     142          *
  KOYUKUK BASIN ................................  2 of  6        *      177 
  CENTRAL YUKON BASIN ..........................  0 of  5        *      194 
  NORTON SOUND .................................  0 of  4        *      140 
  KUPARUK-SAGAVANIRKTOK RIVER BASIN ............  0 of  3        *      173 
  NORTHWEST ARCTIC RIVER BASIN .................  0 of  1        *         *
  SOUTHEAST ALASKA BASIN .......................  1 of  3        *      116 
ARIZONA
  VERDE RIVER BASIN ............................  5 of 10     481*      172 
  SAN FRANCISCO PEAKS ..........................  0 of  1        *      170 
  CENTRAL MOGOLLON RIM .........................  3 of  4     357       160 
  LITTLE COLORADO - SOUTHERN HEADWATERS ........  5 of  6     285       141 
  UPPER SALT RIVER BASIN / WHITE MOUNTAINS .....  7 of  9     222       122 
  SAN FRANCISCO / UPPER GILA RIVER BASIN .......  7 of  8     213       129 
  CHUSKA MOUNTAINS .............................  0 of  2        *         *
CALIFORNIA
  NORTHERN GREAT BASIN .........................  4 of  5      65        46 
  TRUCKEE RIVER ................................  8 of  9     170        89 
  LAKE TAHOE ...................................  8 of  8     202        90 
  CARSON RIVER .................................  9 of  9     276       111 
  WALKER RIVER .................................  7 of  7     151        84 
  KLAMATH ...................................... 16 of 18      65        40 
COLORADO
  GUNNISON RIVER BASIN ......................... 13 of 16     103        72 
  UPPER COLORADO RIVER BASIN ................... 27 of 31     105        78 
  SOUTH PLATTE RIVER BASIN ..................... 17 of 22     128       103 
  LARAMIE AND NORTH PLATTE RIVER BASINS ........ 12 of 12     109        89 
  YAMPA AND WHITE RIVER BASINS ................. 19 of 20     116        83 
  ARKANSAS RIVER BASIN .........................  7 of  9     113        82 
  UPPER RIO GRANDE BASIN ....................... 11 of 16     115        64 
  SAN MIGUEL, DOLORES, ANIMAS
     AND SAN JUAN RIVER BASIN .................. 17 of 19     114        70 
IDAHO
  NORTHERN PANHANDLE REGION .................... 10 of 10      63        59 
  SPOKANE RIVER BASIN .......................... 10 of 10      34        55 
  CLEARWATER BASIN ............................. 15 of 16      47        60 
  SALMON BASIN ................................. 22 of 22      72        56 
  WEISER BASIN .................................  4 of  4      86        54 
  PAYETTE BASIN ................................ 11 of 11      64        49 
  BOISE BASIN ..................................  9 of 10      62        47 
  BIG WOOD BASIN ...............................  8 of  9      70        53 
  LITTLE WOOD BASIN ............................  5 of  5      71        56 
  BIG LOST BASIN ...............................  5 of  5      78        60 
  LITTLE LOST, BIRCH BASINS ....................  4 of  4      84        60 
  MEDICINE LODGE, BEAVER, CAMAS BASINS .........  4 of  4      91        77 
  HENRYS FORK, TETON BASINS ....................  8 of  8      72        61 
  SNAKE BASIN ABOVE PALISADES .................. 18 of 18      83        69 
  WILLOW, BLACKFOOT, PORTNEUF BASINS ...........  6 of  6      82        62 
  SNAKE BASIN ABOVE AMERICAN FALLS ............. 29 of 29      82        66 
  RAFT BASIN ...................................  1 of  2      82        67 
  GOOSE CREEK BASIN ............................  2 of  2      45        45 
  SALMON FALLS BASIN ...........................  5 of  6      54        45 
  BRUNEAU BASIN ................................  5 of  6      65        49 
  OWYHEE BASIN .................................  8 of  8      91        48 
  BEAR RIVER BASIN ............................. 15 of 15     103        74 
MONTANA
  KOOTENAI RIVER BASIN .........................  5 of  8      71        59 
  FLATHEAD RIVER BASIN ......................... 10 of 16      96        84 
  UPPER CLARK FORK RIVER BASIN ................. 13 of 15      98        85 
  BITTERROOT RIVER BASIN .......................  7 of  7      68        68 
  LOWER CLARK FORK RIVER BASIN .................  7 of  8      46        61 
  JEFFERSON RIVER BASIN ........................ 19 of 19      94        79 
  MADISON RIVER BASIN .......................... 11 of 11      85        71 
  GALLATIN RIVER BASIN .........................  7 of  7     101        95 
  MISSOURI HEADWATERS .......................... 31 of 31      93        79 
  HEADWATERS MISSOURI MAINSTEM .................  5 of  5     113       107 
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS ..  9 of 10     125       100 
  SUN, TETON AND MARIAS RIVER BASINS ...........  5 of  6     162        97 
  MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21     138       103 
  ST. MARY AND MILK RIVER BASINS ...............  3 of  3     102        86 
  UPPER YELLOWSTONE RIVER BASIN ................ 23 of 24     107        93 
  WIND RIVER BASIN (WYOMING) ................... 11 of 13     113        79 
  SHOSHONE RIVER BASIN (WYOMING) ...............  5 of  6     102        86 
  BIGHORN RIVER BASIN (WYOMING) ................ 15 of 16     126       101 
  TONGUE RIVER BASIN (WYOMING) .................  6 of  7     127       105 
  POWDER RIVER BASIN (WYOMING) .................  6 of  7     162       128 
  LOWER YELLOWSTONE RIVER BASIN ................ 30 of 35     122        96 
NEVADA
  NORTHERN GREAT BASIN .........................  7 of  9      81        50 
  SNAKE RIVER ..................................  7 of 11      59        48 
  OWYHEE RIVER .................................  5 of  5      86        50 
  UPPER HUMBOLDT RIVER .........................  9 of  9      76        54 
  LOWER HUMBOLDT RIVER .........................  5 of  9     128        64 
  CLOVER VALLEY & FRANKLIN RIVER ...............  4 of  6      80        61 
  EASTERN NEVADA BASINS ........................  4 of  4     141        79 
NEW MEXICO
  RIO CHAMA RIVER BASIN ........................  4 of  4     115        68 
  UPPER RIO GRANDE BASIN .......................  9 of  9     105        63 
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS .......  9 of 11     146        99 
  JEMEZ RIVER BASIN ............................  3 of  3     120        67 
  SAN FRANCISCO RIVER BASIN ....................  3 of  3     318       122 
  GILA RIVER BASIN .............................  3 of  3     191       130 
  MIMBRES RIVER BASIN ..........................  2 of  2     178       164 
  PECOS RIVER BASIN ............................  1 of  1     130       108 
  SAN JUAN RIVER HEADWATERS ....................  5 of  5     105        64 
  ANIMAS RIVER BASIN ...........................  7 of  7     112        75 
  CIMARRON RIVER BASIN .........................  2 of  2     140        95 
  ZUNI/BLUEWATER RIVER BASIN ...................  1 of  1     286*      109 
  RIO HONDO BASIN ..............................  1 of  1     285       177 
  CHUSKA MOUNTAINS .............................  0 of  1        *         *
OREGON
  OWYHEE .......................................  8 of  8      91        48 
  MALHEUR ......................................  3 of  3     102        58 
  GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 15 of 17      63        64 
  UMATILLA, WALLA WALLA, WILLOW ................  7 of  8      39        58 
  JOHN DAY ..................................... 13 of 13      73        56 
  UPPER DESCHUTES, CROOKED ..................... 12 of 14      43        40 
  HOOD, SANDY, LOWER DESCHUTES .................  8 of  8      32        49 
  COAST RANGE ..................................  1 of  2        *       41 
  WILLAMETTE ................................... 18 of 23      32        39 
  ROGUE, UMPQUA ................................ 12 of 12      67        42 
  KLAMATH ...................................... 16 of 18      65        40 
  LAKE COUNTY, GOOSE LAKE ......................  9 of  9      84        43 
  HARNEY .......................................  9 of  9      80        58 
UTAH
  RAFT RIVER ...................................  1 of  2      82        67 
  BEAR RIVER ................................... 18 of 24     107        73 
  WEBER-OGDEN RIVERS ........................... 17 of 20     113        70 
  PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17     112        72 
  TOOELE VALLEY-VERNON CREEK ...................  3 of  4     152        87 
  NORTHEASTERN UINTAHS .........................  6 of 10     160       110 
  DUCHESNE RIVER ............................... 12 of 13     145        91 
  PRICE-SAN RAFAEL .............................  6 of 11     125        81 
  DIRTY DEVIL ..................................  3 of  6     185       108 
  SOUTH EASTERN UTAH ...........................  3 of  7        *         *
  UPPER SEVIER RIVER ........................... 12 of 17     241       128 
  SAN PITCH RIVER ..............................  5 of 11        *         *
  LOWER SEVIER RIVER ...........................  1 of  3        *         *
  BEAVER RIVER .................................  2 of  2     155       127 
  ESCALANTE RIVER ..............................  3 of  4     295       141 
  SOUTHWESTERN UTAH ............................ 10 of 13     412*      154 
WASHINGTON
  NORTHERN PANHANDLE ........................... 10 of 10      63        59 
  SPOKANE ...................................... 10 of 10      34        55 
  UPPER COLUMBIA ...............................  5 of  6      60        58 
  CENTRAL COLUMBIA .............................  7 of  8      30        58 
  UPPER YAKIMA .................................  3 of  5      11        59 
  LOWER YAKIMA .................................  6 of  9      40        51 
  LOWER SNAKE .................................. 21 of 22      51        61 
  LOWER COLUMBIA ............................... 18 of 22      25        48 
  SOUTH PUGET SOUND ............................  6 of 10      33        60 
  CENTRAL PUGET SOUND ..........................  4 of  9        *       69 
  NORTH PUGET SOUND ............................  4 of 12        *       59 
  OLYMPIC ......................................  2 of  4      21        36 
WYOMING
  SNAKE RIVER .................................. 20 of 20      84        66 
  MADISON-GALLATIN .............................  5 of  5      81        60 
  YELLOWSTONE .................................. 14 of 14     105        86 
  WIND RIVER ................................... 10 of 12     113        81 
  BIGHORN BASIN ................................ 10 of 11     147       114 
  SHOSHONE RIVER ...............................  5 of  6     102        86 
  POWDER RIVER .................................  6 of  7     162       128 
  TONGUE RIVER .................................  6 of  7     127       105 
  BELLE FOURCHE ................................  2 of  2     203       119 
  CHEYENNE RIVER BASIN .........................  2 of  2     176        99 
  UPPER N. PLATTE .............................. 17 of 19     113        92 
  SWEETWATER ...................................  3 of  3      72        58 
  LOWER N. PLATTE ..............................  4 of  4     187       114 
  LARAMIE RIVER ................................  7 of  7     144       108 
  S. PLATTE ....................................  2 of  3     135       118 
  LITTLE SNAKE RIVER ...........................  8 of  8     146        90 
  UPPER GREEN RIVER ............................ 13 of 14      89        70 
  LOWER GREEN RIVER ............................  7 of 11     122        95 
  UPPER BEAR RIVER .............................  8 of 10      97        71 
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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