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 TUESDAY: FEBRUARY 19 , 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      67       116 
  SUSITNA BASIN ................................  3 of  5     110       118 
  NORTHERN KENAI MOUNTAINS .....................  7 of  7      54       132 
  SOUTHERN KENAI ...............................  2 of  6        *      132 
  COPPER BASIN .................................  1 of  3        *      120 
  PRINCE WILLIAM SOUND .........................  1 of  7        *      139 
  CHENA BASIN ..................................  6 of  7      83        92 
  UPPER TANANA .................................  2 of  4      38          *
  KOYUKUK BASIN ................................  2 of  6        *      103 
  CENTRAL YUKON BASIN ..........................  0 of  5        *      113 
  NORTON SOUND .................................  0 of  4        *      116 
  KUPARUK-SAGAVANIRKTOK RIVER BASIN ............  0 of  3        *       99 
  NORTHWEST ARCTIC RIVER BASIN .................  0 of  1        *         *
  SOUTHEAST ALASKA BASIN .......................  1 of  3        *       90 
ARIZONA
  VERDE RIVER BASIN ............................  5 of 10      99       142 
  SAN FRANCISCO PEAKS ..........................  1 of  1     164       164 
  CENTRAL MOGOLLON RIM .........................  3 of  4      92       129 
  LITTLE COLORADO - SOUTHERN HEADWATERS ........  5 of  6      96       124 
  UPPER SALT RIVER BASIN / WHITE MOUNTAINS .....  7 of  9      68       104 
  SAN FRANCISCO / UPPER GILA RIVER BASIN .......  7 of  8      51        86 
  CHUSKA MOUNTAINS .............................  0 of  2        *         *
CALIFORNIA
  NORTHERN GREAT BASIN .........................  3 of  5     131       110 
  TRUCKEE RIVER ................................  7 of  9     159       117 
  LAKE TAHOE ...................................  8 of  8     174       128 
  CARSON RIVER .................................  9 of  9     176       120 
  WALKER RIVER .................................  7 of  7     172       137 
  KLAMATH ...................................... 16 of 18      95        92 
COLORADO
  GUNNISON RIVER BASIN ......................... 13 of 16     120       114 
  UPPER COLORADO RIVER BASIN ................... 27 of 31     116       110 
  SOUTH PLATTE RIVER BASIN ..................... 17 of 22     111       113 
  LARAMIE AND NORTH PLATTE RIVER BASINS ........ 12 of 12     110       114 
  YAMPA AND WHITE RIVER BASINS ................. 19 of 20     113       109 
  ARKANSAS RIVER BASIN .........................  7 of  9     123       109 
  UPPER RIO GRANDE BASIN ....................... 11 of 16     111       104 
  SAN MIGUEL, DOLORES, ANIMAS
     AND SAN JUAN RIVER BASIN .................. 17 of 19     118       109 
IDAHO
  NORTHERN PANHANDLE REGION ....................  9 of 10      94        87 
  SPOKANE RIVER BASIN ..........................  9 of 10      94        87 
  CLEARWATER BASIN ............................. 13 of 16      99        95 
  SALMON BASIN ................................. 21 of 22     104        89 
  WEISER BASIN .................................  4 of  4     135        98 
  PAYETTE BASIN ................................ 11 of 11     112        90 
  BOISE BASIN ..................................  9 of 10     103        92 
  BIG WOOD BASIN ...............................  8 of  9     110        94 
  LITTLE WOOD BASIN ............................  5 of  5     114       107 
  BIG LOST BASIN ...............................  5 of  5     104       102 
  LITTLE LOST, BIRCH BASINS ....................  4 of  4      99        93 
  MEDICINE LODGE, BEAVER, CAMAS BASINS .........  4 of  4      99       101 
  HENRYS FORK, TETON BASINS ....................  7 of  8     109       102 
  SNAKE BASIN ABOVE PALISADES .................. 18 of 18     101        97 
  WILLOW, BLACKFOOT, PORTNEUF BASINS ...........  5 of  6     118       113 
  SNAKE BASIN ABOVE AMERICAN FALLS ............. 27 of 29     107       102 
  RAFT BASIN ...................................  1 of  2      99       105 
  GOOSE CREEK BASIN ............................  2 of  2     112       113 
  SALMON FALLS BASIN ...........................  5 of  6     112       118 
  BRUNEAU BASIN ................................  5 of  6     117       121 
  OWYHEE BASIN .................................  8 of  8     120       103 
  BEAR RIVER BASIN ............................. 14 of 15     113       109 
MONTANA
  KOOTENAI RIVER BASIN .........................  8 of  8      91        84 
  FLATHEAD RIVER BASIN ......................... 11 of 16      92        94 
  UPPER CLARK FORK RIVER BASIN ................. 13 of 15     101       103 
  BITTERROOT RIVER BASIN .......................  7 of  7      99        99 
  LOWER CLARK FORK RIVER BASIN .................  8 of  8      97        90 
  JEFFERSON RIVER BASIN ........................ 19 of 19     101       101 
  MADISON RIVER BASIN .......................... 11 of 11     106       100 
  GALLATIN RIVER BASIN .........................  7 of  7     111       117 
  MISSOURI HEADWATERS .......................... 31 of 31     105       103 
  HEADWATERS MISSOURI MAINSTEM .................  5 of  5     112       112 
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS ..  9 of 10     115       109 
  SUN, TETON AND MARIAS RIVER BASINS ...........  5 of  6      89        87 
  MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21     107       102 
  ST. MARY AND MILK RIVER BASINS ...............  3 of  3      97        94 
  UPPER YELLOWSTONE RIVER BASIN ................ 22 of 24     105       104 
  WIND RIVER BASIN (WYOMING) ................... 10 of 13     103        87 
  SHOSHONE RIVER BASIN (WYOMING) ...............  4 of  6     100       105 
  BIGHORN RIVER BASIN (WYOMING) ................ 14 of 16     102        92 
  TONGUE RIVER BASIN (WYOMING) .................  6 of  7      87        79 
  POWDER RIVER BASIN (WYOMING) .................  6 of  7     102        79 
  LOWER YELLOWSTONE RIVER BASIN ................ 29 of 35      99        88 
NEVADA
  NORTHERN GREAT BASIN .........................  6 of  9     123       106 
  SNAKE RIVER ..................................  7 of 11     116       118 
  OWYHEE RIVER .................................  5 of  5     123       108 
  UPPER HUMBOLDT RIVER .........................  9 of  9     130       120 
  LOWER HUMBOLDT RIVER .........................  5 of  9     125       113 
  CLOVER VALLEY & FRANKLIN RIVER ...............  4 of  6     136       126 
  EASTERN NEVADA BASINS ........................  4 of  4     134       129 
NEW MEXICO
  RIO CHAMA RIVER BASIN ........................  4 of  4     104       113 
  UPPER RIO GRANDE BASIN .......................  9 of  9     106       103 
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS .......  9 of 11     103       110 
  JEMEZ RIVER BASIN ............................  3 of  3      99       115 
  SAN FRANCISCO RIVER BASIN ....................  3 of  3      58        86 
  GILA RIVER BASIN .............................  3 of  3      45        78 
  MIMBRES RIVER BASIN ..........................  2 of  2       0        84 
  PECOS RIVER BASIN ............................  1 of  1      99       115 
  SAN JUAN RIVER HEADWATERS ....................  5 of  5     107       100 
  ANIMAS RIVER BASIN ...........................  7 of  7     125       113 
  CIMARRON RIVER BASIN .........................  2 of  2      98       110 
  ZUNI/BLUEWATER RIVER BASIN ...................  1 of  1      94       109 
  RIO HONDO BASIN ..............................  1 of  1      31       141 
  CHUSKA MOUNTAINS .............................  0 of  1        *         *
OREGON
  OWYHEE .......................................  8 of  8     120       103 
  MALHEUR ......................................  2 of  3     129       105 
  GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 16 of 17     116       105 
  UMATILLA, WALLA WALLA, WILLOW ................  6 of  8     125       103 
  JOHN DAY ..................................... 11 of 13     122       102 
  UPPER DESCHUTES, CROOKED ..................... 14 of 14      89        82 
  HOOD, SANDY, LOWER DESCHUTES .................  8 of  8      75        81 
  COAST RANGE ..................................  1 of  2        *       81 
  WILLAMETTE ................................... 19 of 23      82        82 
  ROGUE, UMPQUA ................................ 12 of 12      91        89 
  KLAMATH ...................................... 16 of 18      95        92 
  LAKE COUNTY, GOOSE LAKE ......................  8 of  9     130       100 
  HARNEY .......................................  7 of  9     113       104 
UTAH
  RAFT RIVER ...................................  1 of  2      99       105 
  BEAR RIVER ................................... 17 of 24     112       108 
  WEBER-OGDEN RIVERS ........................... 17 of 20     123       124 
  PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17     135       132 
  TOOELE VALLEY-VERNON CREEK ...................  3 of  4     143       131 
  NORTHEASTERN UINTAHS .........................  6 of 10     116       119 
  DUCHESNE RIVER ............................... 12 of 13     137       140 
  PRICE-SAN RAFAEL .............................  6 of 11     127       135 
  DIRTY DEVIL ..................................  3 of  6     130       135 
  SOUTH EASTERN UTAH ...........................  3 of  6     138       145 
  UPPER SEVIER RIVER ........................... 11 of 17     151       137 
  SAN PITCH RIVER ..............................  5 of 11        *         *
  LOWER SEVIER RIVER ...........................  1 of  3        *         *
  BEAVER RIVER .................................  2 of  2     128       138 
  ESCALANTE RIVER ..............................  3 of  4     117       123 
  SOUTHWESTERN UTAH ............................  9 of 13     177       137 
WASHINGTON
  NORTHERN PANHANDLE ...........................  9 of 10      94        87 
  SPOKANE ......................................  9 of 10      94        87 
  UPPER COLUMBIA ...............................  5 of  6      94        83 
  CENTRAL COLUMBIA .............................  7 of  8      92        94 
  UPPER YAKIMA .................................  4 of  5      81        88 
  LOWER YAKIMA .................................  7 of  9      98        89 
  LOWER SNAKE .................................. 19 of 22     104        98 
  LOWER COLUMBIA ............................... 17 of 22      86        84 
  SOUTH PUGET SOUND ............................  7 of 10      91        88 
  CENTRAL PUGET SOUND ..........................  9 of  9      76        94 
  NORTH PUGET SOUND ............................  8 of 12      86        93 
  OLYMPIC ......................................  3 of  4      88        96 
WYOMING
  SNAKE RIVER .................................. 19 of 20     103        98 
  MADISON-GALLATIN .............................  5 of  5     105        93 
  YELLOWSTONE .................................. 13 of 14      99        97 
  WIND RIVER ................................... 10 of 12     103        87 
  BIGHORN BASIN ................................ 10 of 11     103        81 
  SHOSHONE RIVER ...............................  4 of  6     100       105 
  POWDER RIVER .................................  6 of  7     102        79 
  TONGUE RIVER .................................  6 of  7      87        79 
  BELLE FOURCHE ................................  2 of  2     116        97 
  CHEYENNE RIVER BASIN .........................  2 of  2     109        71 
  UPPER N. PLATTE .............................. 17 of 19     110       112 
  SWEETWATER ...................................  3 of  3     108        84 
  LOWER N. PLATTE ..............................  4 of  4     121       100 
  LARAMIE RIVER ................................  7 of  7     102       104 
  S. PLATTE ....................................  2 of  3      91       101 
  LITTLE SNAKE RIVER ...........................  8 of  8     112       110 
  UPPER GREEN RIVER ............................ 13 of 14      98        95 
  LOWER GREEN RIVER ............................  7 of 11      99        97 
  UPPER BEAR RIVER .............................  8 of 10     109       108 
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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