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 SATURDAY: JANUARY 18 , 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      65       112 
  SUSITNA BASIN ................................  3 of  5     181       179 
  NORTHERN KENAI MOUNTAINS .....................  7 of  7      35       112 
  SOUTHERN KENAI ...............................  3 of  6      50       136 
  COPPER BASIN .................................  2 of  3      95        97 
  PRINCE WILLIAM SOUND .........................  1 of  7        *         *
  CHENA BASIN ..................................  1 of  7        *         *
  UPPER TANANA .................................  2 of  4     104          *
  KOYUKUK BASIN ................................  2 of  6        *      142 
  CENTRAL YUKON BASIN ..........................  0 of  5        *      156 
  NORTON SOUND .................................  0 of  4        *      105 
  KUPARUK-SAGAVANIRKTOK RIVER BASIN ............  0 of  3        *      149 
  NORTHWEST ARCTIC RIVER BASIN .................  0 of  1        *         *
  SOUTHEAST ALASKA BASIN .......................  1 of  3        *      104 
ARIZONA
  VERDE RIVER BASIN ............................  5 of 10     158       135 
  SAN FRANCISCO PEAKS ..........................  1 of  1     147       122 
  CENTRAL MOGOLLON RIM .........................  3 of  4     131       131 
  LITTLE COLORADO - SOUTHERN HEADWATERS ........  5 of  6     126       120 
  UPPER SALT RIVER BASIN / WHITE MOUNTAINS .....  7 of  9     114       107 
  SAN FRANCISCO / UPPER GILA RIVER BASIN .......  7 of  8     107       114 
  CHUSKA MOUNTAINS .............................  0 of  2        *         *
CALIFORNIA
  NORTHERN GREAT BASIN .........................  4 of  5     136        88 
  TRUCKEE RIVER ................................  8 of  9      89        72 
  LAKE TAHOE ...................................  8 of  8      90        74 
  CARSON RIVER .................................  9 of  9     105        76 
  WALKER RIVER .................................  7 of  7      80        64 
  KLAMATH ...................................... 16 of 18      90        68 
COLORADO
  GUNNISON RIVER BASIN ......................... 13 of 16     107        85 
  UPPER COLORADO RIVER BASIN ................... 27 of 31     109        87 
  SOUTH PLATTE RIVER BASIN ..................... 17 of 22     117       102 
  LARAMIE AND NORTH PLATTE RIVER BASINS ........ 12 of 12     110        99 
  YAMPA AND WHITE RIVER BASINS ................. 19 of 20     117        96 
  ARKANSAS RIVER BASIN .........................  7 of  9     115        89 
  UPPER RIO GRANDE BASIN ....................... 11 of 16     115        83 
  SAN MIGUEL, DOLORES, ANIMAS
     AND SAN JUAN RIVER BASIN .................. 17 of 19     118        88 
IDAHO
  NORTHERN PANHANDLE REGION .................... 10 of 10     117        96 
  SPOKANE RIVER BASIN ..........................  9 of 10      99        88 
  CLEARWATER BASIN ............................. 15 of 16      99        87 
  SALMON BASIN ................................. 22 of 22      91        76 
  WEISER BASIN .................................  4 of  4      91        72 
  PAYETTE BASIN ................................ 11 of 11      89        70 
  BOISE BASIN ..................................  9 of 10      90        73 
  BIG WOOD BASIN ...............................  8 of  9      81        66 
  LITTLE WOOD BASIN ............................  5 of  5      69        58 
  BIG LOST BASIN ...............................  5 of  5      73        62 
  LITTLE LOST, BIRCH BASINS ....................  4 of  4      90        72 
  MEDICINE LODGE, BEAVER, CAMAS BASINS .........  4 of  4      96        84 
  HENRYS FORK, TETON BASINS ....................  7 of  8      95        90 
  SNAKE BASIN ABOVE PALISADES .................. 18 of 18     103        91 
  WILLOW, BLACKFOOT, PORTNEUF BASINS ...........  6 of  6     102        83 
  SNAKE BASIN ABOVE AMERICAN FALLS ............. 28 of 29     101        88 
  RAFT BASIN ...................................  1 of  2     114        99 
  GOOSE CREEK BASIN ............................  2 of  2     108        95 
  SALMON FALLS BASIN ...........................  5 of  6     100        88 
  BRUNEAU BASIN ................................  5 of  6     107        93 
  OWYHEE BASIN .................................  8 of  8     123        87 
  BEAR RIVER BASIN ............................. 15 of 15     117        95 
MONTANA
  KOOTENAI RIVER BASIN .........................  8 of  8     111        90 
  FLATHEAD RIVER BASIN ......................... 13 of 16     118       100 
  UPPER CLARK FORK RIVER BASIN ................. 13 of 15     104        89 
  BITTERROOT RIVER BASIN .......................  7 of  7      98        85 
  LOWER CLARK FORK RIVER BASIN .................  7 of  8      95        85 
  JEFFERSON RIVER BASIN ........................ 19 of 19      99        86 
  MADISON RIVER BASIN .......................... 11 of 11      94        82 
  GALLATIN RIVER BASIN .........................  7 of  7     101        98 
  MISSOURI HEADWATERS .......................... 31 of 31      98        86 
  HEADWATERS MISSOURI MAINSTEM .................  5 of  5     111       101 
  SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS ..  9 of 10     119        98 
  SUN, TETON AND MARIAS RIVER BASINS ...........  5 of  6     124        96 
  MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21     121       100 
  ST. MARY AND MILK RIVER BASINS ...............  3 of  3     129       112 
  UPPER YELLOWSTONE RIVER BASIN ................ 23 of 24     105        95 
  WIND RIVER BASIN (WYOMING) ................... 10 of 13     103        72 
  SHOSHONE RIVER BASIN (WYOMING) ...............  5 of  6     105        95 
  BIGHORN RIVER BASIN (WYOMING) ................ 14 of 16     113        96 
  TONGUE RIVER BASIN (WYOMING) .................  6 of  7     101        85 
  POWDER RIVER BASIN (WYOMING) .................  6 of  7     119       107 
  LOWER YELLOWSTONE RIVER BASIN ................ 28 of 35     106        87 
NEVADA
  NORTHERN GREAT BASIN .........................  7 of  8     141        90 
  SNAKE RIVER ..................................  7 of 11     107        93 
  OWYHEE RIVER .................................  5 of  5     136        96 
  UPPER HUMBOLDT RIVER .........................  9 of  9     109        87 
  LOWER HUMBOLDT RIVER .........................  5 of 10     134        90 
  CLOVER VALLEY & FRANKLIN RIVER ...............  4 of  6      96        86 
  EASTERN NEVADA BASINS ........................  4 of  4     105        81 
NEW MEXICO
  RIO CHAMA RIVER BASIN ........................  4 of  4     116        86 
  UPPER RIO GRANDE BASIN .......................  9 of  9     109        83 
  SANGRE DE CRISTO MOUNTAIN RANGE BASINS .......  9 of 11     135       103 
  JEMEZ RIVER BASIN ............................  3 of  3     123        86 
  SAN FRANCISCO RIVER BASIN ....................  3 of  3     141       115 
  GILA RIVER BASIN .............................  3 of  3     101       112 
  MIMBRES RIVER BASIN ..........................  2 of  2      88       135 
  PECOS RIVER BASIN ............................  1 of  1     120       103 
  SAN JUAN RIVER HEADWATERS ....................  5 of  5     109        83 
  ANIMAS RIVER BASIN ...........................  7 of  7     119        94 
  CIMARRON RIVER BASIN .........................  2 of  2     138       105 
  ZUNI/BLUEWATER RIVER BASIN ...................  1 of  1     119       102 
  RIO HONDO BASIN ..............................  1 of  1      48       139 
  CHUSKA MOUNTAINS .............................  0 of  1        *         *
OREGON
  OWYHEE .......................................  8 of  8     123        87 
  MALHEUR ......................................  3 of  3      95        73 
  GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 15 of 17      93        85 
  UMATILLA, WALLA WALLA, WILLOW ................  7 of  8      93        79 
  JOHN DAY ..................................... 13 of 13      92        73 
  UPPER DESCHUTES, CROOKED ..................... 13 of 14      87        69 
  HOOD, SANDY, LOWER DESCHUTES .................  6 of  8      90        74 
  COAST RANGE ..................................  1 of  2     280        81 
  WILLAMETTE ................................... 18 of 23      94        67 
  ROGUE, UMPQUA ................................ 12 of 12      95        68 
  KLAMATH ...................................... 16 of 18      90        68 
  LAKE COUNTY, GOOSE LAKE ......................  9 of  9     107        71 
  HARNEY .......................................  9 of  9      97        79 
UTAH
  RAFT RIVER ...................................  1 of  2     114        99 
  BEAR RIVER ................................... 18 of 24     120        96 
  WEBER-OGDEN RIVERS ........................... 17 of 20     115        93 
  PROVO R.-UTAH LAKE-JORDAN R. ................. 15 of 17     121        91 
  TOOELE VALLEY-VERNON CREEK ...................  3 of  4     143        92 
  NORTHEASTERN UINTAHS .........................  6 of 10     151       116 
  DUCHESNE RIVER ............................... 12 of 13     132       100 
  PRICE-SAN RAFAEL .............................  6 of 11     117        94 
  DIRTY DEVIL ..................................  3 of  6     123       110 
  SOUTH EASTERN UTAH ...........................  3 of  7        *         *
  UPPER SEVIER RIVER ........................... 11 of 17     137       109 
  SAN PITCH RIVER ..............................  5 of 11        *         *
  LOWER SEVIER RIVER ...........................  1 of  3        *         *
  BEAVER RIVER .................................  2 of  2     100        97 
  ESCALANTE RIVER ..............................  3 of  4     171       121 
  SOUTHWESTERN UTAH ............................  9 of 13     167       118 
WASHINGTON
  NORTHERN PANHANDLE ........................... 10 of 10     117        96 
  SPOKANE ......................................  9 of 10      99        88 
  UPPER COLUMBIA ...............................  5 of  6      92        77 
  CENTRAL COLUMBIA .............................  7 of  8      83        88 
  UPPER YAKIMA .................................  4 of  5      73        89 
  LOWER YAKIMA .................................  5 of  9      96        82 
  LOWER SNAKE .................................. 21 of 22      96        87 
  LOWER COLUMBIA ............................... 16 of 22      92        76 
  SOUTH PUGET SOUND ............................  7 of 10     103        90 
  CENTRAL PUGET SOUND ..........................  9 of  9      85       101 
  NORTH PUGET SOUND ............................  7 of 12      91        83 
  OLYMPIC ......................................  3 of  4      91        58 
WYOMING
  SNAKE RIVER .................................. 20 of 20     102        88 
  MADISON-GALLATIN .............................  5 of  5      93        75 
  YELLOWSTONE .................................. 14 of 14     106        93 
  WIND RIVER ...................................  9 of 12     102        73 
  BIGHORN BASIN ................................  9 of 11     122        98 
  SHOSHONE RIVER ...............................  5 of  6     105        95 
  POWDER RIVER .................................  6 of  7     119       107 
  TONGUE RIVER .................................  6 of  7     101        85 
  BELLE FOURCHE ................................  2 of  2      99        72 
  CHEYENNE RIVER BASIN .........................  2 of  2      99        80 
  UPPER N. PLATTE .............................. 16 of 19     113       101 
  SWEETWATER ...................................  3 of  3      81        53 
  LOWER N. PLATTE ..............................  4 of  4     140        97 
  LARAMIE RIVER ................................  7 of  7     122       104 
  S. PLATTE ....................................  2 of  3     112       103 
  LITTLE SNAKE RIVER ...........................  8 of  8     129       102 
  UPPER GREEN RIVER ............................ 13 of 14     102        86 
  LOWER GREEN RIVER ............................  7 of 11     128       104 
  UPPER BEAR RIVER .............................  8 of 10     117        95 
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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