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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 WEDNESDAY: SEPTEMBER 23 , 2020
-----------------------------------------------------------------------------
STATE PERCENT OF Normal
RIVER BASIN Number Snow Water Accum
of Sites Equivalent Precip
-----------------------------------------------------------------------------
ALASKA
ANCHORAGE/SHIP CREEK BASIN ................... 4 of 4 * 114
SUSITNA BASIN ................................ 3 of 5 * 140
NORTHERN KENAI MOUNTAINS ..................... 7 of 7 * *
SOUTHERN KENAI ............................... 3 of 6 * 53
COPPER BASIN ................................. 2 of 3 * 95
PRINCE WILLIAM SOUND ......................... 1 of 7 * 100
CHENA BASIN .................................. 6 of 7 * 144
UPPER TANANA ................................. 2 of 4 * *
KOYUKUK BASIN ................................ 2 of 6 * 110
CENTRAL YUKON BASIN .......................... 0 of 5 * *
NORTON SOUND ................................. 0 of 4 * 107
KUPARUK-SAGAVANIRKTOK RIVER BASIN ............ 0 of 3 * 87
NORTHWEST ARCTIC RIVER BASIN ................. 0 of 1 * *
SOUTHEAST ALASKA BASIN ....................... 1 of 3 * 116
ARIZONA
VERDE RIVER BASIN ............................ 5 of 10 * 85
SAN FRANCISCO PEAKS .......................... 1 of 1 * 84
CENTRAL MOGOLLON RIM ......................... 3 of 4 * 90
LITTLE COLORADO RIVER BASIN .................. 5 of 11 * 87
SALT RIVER BASIN ............................. 6 of 10 * 81
SAN FRANCISCO / UPPER GILA RIVER BASIN ....... 7 of 8 * 76
CHUSKA MOUNTAINS ............................. 0 of 2 * *
CALIFORNIA
NORTHERN GREAT BASIN ......................... 7 of 8 * 78
TRUCKEE RIVER ................................ 11 of 12 * 64
LAKE TAHOE ................................... 11 of 11 * 65
CARSON RIVER ................................. 12 of 12 * 71
WALKER RIVER ................................. 7 of 7 * 61
COLORADO
GUNNISON RIVER BASIN ......................... 12 of 16 * 74
UPPER COLORADO RIVER BASIN ................... 30 of 35 * 79
SOUTH PLATTE RIVER BASIN ..................... 16 of 22 * 88
LARAMIE AND NORTH PLATTE RIVER BASINS ........ 10 of 12 * *
YAMPA AND WHITE RIVER BASINS ................. 19 of 22 * 81
ARKANSAS RIVER BASIN ......................... 9 of 11 * 72
UPPER RIO GRANDE BASIN ....................... 12 of 19 * 66
SAN MIGUEL, DOLORES, ANIMAS
AND SAN JUAN RIVER BASIN .................. 19 of 21 * 68
IDAHO
NORTHERN PANHANDLE REGION .................... 8 of 10 * 95
COEUR D'ALENE-ST. JOE RIVER BASIN ............ 6 of 7 * 85
CLEARWATER BASIN ............................. 14 of 16 * 94
SALMON BASIN ................................. 20 of 20 * 88
WEISER BASIN ................................. 4 of 4 * 86
PAYETTE BASIN ................................ 12 of 12 * 83
BOISE BASIN .................................. 8 of 10 * 80
BIG WOOD BASIN ............................... 5 of 8 * 66
LITTLE WOOD BASIN ............................ 4 of 4 * 63
BIG LOST BASIN ............................... 4 of 5 * 66
LITTLE LOST, BIRCH BASINS .................... 4 of 4 * 78
MEDICINE LODGE, BEAVER, CAMAS BASINS ......... 2 of 2 * 90
HENRYS FORK, TETON BASINS .................... 7 of 8 * 92
SNAKE BASIN ABOVE PALISADES .................. 20 of 21 * 96
WILLOW, BLACKFOOT, PORTNEUF BASINS ........... 6 of 6 * 93
SNAKE BASIN ABOVE AMERICAN FALLS ............. 28 of 29 * 94
RAFT BASIN ................................... 1 of 2 * 92
GOOSE CREEK BASIN ............................ 2 of 2 * 95
SALMON FALLS BASIN ........................... 4 of 6 * 95
BRUNEAU BASIN ................................ 5 of 8 * 94
OWYHEE BASIN ................................. 6 of 12 * 88
BEAR RIVER BASIN ............................. 16 of 22 * 88
MONTANA
KOOTENAI RIVER BASIN ......................... 8 of 8 * 86
FLATHEAD RIVER BASIN ......................... 10 of 17 * 94
UPPER CLARK FORK RIVER BASIN ................. 12 of 14 * 95
BITTERROOT RIVER BASIN ....................... 8 of 8 * 98
LOWER CLARK FORK RIVER BASIN ................. 8 of 9 * 87
JEFFERSON RIVER BASIN ........................ 17 of 20 * 93
MADISON RIVER BASIN .......................... 11 of 12 * 87
GALLATIN RIVER BASIN ......................... 7 of 7 * 97
MISSOURI HEADWATERS .......................... 29 of 31 * 92
MISSOURI HEADWATERS MAINSTEM ................ 4 of 4 * 91
SMITH, JUDITH, AND MUSSELSHELL RIVER BASINS .. 8 of 9 * 95
SUN, TETON AND MARIAS RIVER BASINS ........... 5 of 6 * 92
MISSOURI MAINSTEM RIVER BASIN ................ 19 of 21 * 93
ST. MARYS RIVER BASIN ........................ 2 of 2 * 94
MILK RIVER BASIN ............................. 1 of 1 * 99
UPPER YELLOWSTONE RIVER BASIN ................ 22 of 23 * 93
WIND RIVER BASIN (WYOMING) ................... 10 of 13 * 82
SHOSHONE RIVER BASIN (WYOMING) ............... 5 of 6 * 99
BIGHORN RIVER BASIN (WYOMING) ................ 22 of 26 * 85
TONGUE RIVER BASIN (WYOMING) ................. 4 of 7 * 81
POWDER RIVER BASIN (WYOMING) ................. 6 of 7 * 80
LOWER YELLOWSTONE RIVER BASIN ................ 27 of 35 * 84
NEVADA
NORTHERN GREAT BASIN ......................... 7 of 8 * 78
SNAKE RIVER .................................. 7 of 11 * 94
OWYHEE RIVER ................................. 5 of 10 * 86
UPPER HUMBOLDT RIVER ......................... 9 of 16 * 75
LOWER HUMBOLDT RIVER ......................... 5 of 10 * *
CLOVER VALLEY & FRANKLIN RIVER ............... 4 of 6 * 59
EASTERN NEVADA BASINS ........................ 4 of 14 * *
NEW MEXICO
RIO CHAMA RIVER BASIN ........................ 4 of 5 * 67
UPPER RIO GRANDE BASIN - New Mexico .......... 6 of 11 * 62
SANGRE DE CRISTO MOUNTAIN RANGE BASINS ....... 9 of 11 * 66
JEMEZ RIVER BASIN ............................ 3 of 4 * 58
SAN FRANCISCO RIVER BASIN .................... 5 of 6 * 74
GILA RIVER BASIN ............................. 3 of 3 * 76
MIMBRES RIVER BASIN .......................... 2 of 2 * 79
PECOS RIVER BASIN ............................ 3 of 3 * 66
SAN JUAN RIVER BASIN ......................... 12 of 13 * 68
ANIMAS RIVER BASIN ........................... 7 of 7 * 71
CANADIAN RIVER BASIN ......................... 4 of 6 * 66
ZUNI/BLUEWATER RIVER BASIN ................... 1 of 1 * 79
RIO HONDO BASIN .............................. 1 of 1 * *
CHUSKA MOUNTAINS ............................. 0 of 2 * *
OREGON
OWYHEE ....................................... 6 of 12 * 88
MALHEUR ...................................... 3 of 3 * 82
GRANDE RONDE, POWDER, BURNT, IMNAHA .......... 16 of 19 * 100
UMATILLA, WALLA WALLA, WILLOW ................ 6 of 8 * 100
JOHN DAY ..................................... 13 of 13 * 89
UPPER DESCHUTES, CROOKED ..................... 12 of 14 * 75
HOOD, SANDY, LOWER DESCHUTES ................. 8 of 9 * 86
COAST RANGE .................................. 1 of 2 * 86
WILLAMETTE ................................... 15 of 23 * 77
ROGUE, UMPQUA ................................ 11 of 13 * 70
KLAMATH ...................................... 15 of 20 * 66
LAKE COUNTY, GOOSE LAKE ...................... 6 of 7 * 70
HARNEY ....................................... 11 of 12 * 81
UTAH
RAFT RIVER ................................... 1 of 2 * 92
BEAR RIVER ................................... 18 of 25 * 87
WEBER-OGDEN RIVERS ........................... 17 of 22 * 75
PROVO R.-UTAH LAKE-JORDAN R. ................. 18 of 23 * 73
TOOELE VALLEY-VERNON CREEK ................... 3 of 4 * 65
NORTHEASTERN UINTAHS ......................... 7 of 12 * 83
DUCHESNE RIVER ............................... 12 of 15 * 73
PRICE-SAN RAFAEL ............................. 7 of 14 * 73
DIRTY DEVIL .................................. 6 of 11 * 75
SOUTH EASTERN UTAH ........................... 4 of 10 * *
UPPER SEVIER RIVER ........................... 13 of 23 * 73
SAN PITCH RIVER .............................. 6 of 12 * 73
LOWER SEVIER RIVER ........................... 2 of 5 * *
BEAVER RIVER ................................. 2 of 3 * 66
ESCALANTE RIVER .............................. 3 of 5 * 72
SOUTHWESTERN UTAH ............................ 10 of 13 * 77
WASHINGTON
SPOKANE ...................................... 8 of 9 * 90
LOWER PEND OREILLE ........................... 4 of 5 * 97
UPPER COLUMBIA ............................... 5 of 9 * 91
CENTRAL COLUMBIA ............................. 9 of 11 * 89
UPPER YAKIMA ................................. 6 of 7 * 93
NACHES ....................................... 6 of 8 * 91
LOWER YAKIMA ................................. 2 of 4 * 72
KLICKITAT .................................... 2 of 4 * 76
LOWER SNAKE, WALLA WALLA ..................... 11 of 14 * 102
LOWER COLUMBIA ............................... 11 of 17 * 91
SOUTH PUGET SOUND ............................ 10 of 14 * 106
CENTRAL PUGET SOUND .......................... 9 of 9 * 113
NORTH PUGET SOUND ............................ 8 of 13 * 94
OLYMPIC ...................................... 3 of 4 * 80
WYOMING
SNAKE RIVER .................................. 21 of 22 * 96
MADISON HEADWATERS IN WYOMING ................ 5 of 5 * 82
YELLOWSTONE HEADWATERS IN WYOMING ............ 13 of 13 * 96
WIND RIVER ................................... 9 of 12 * 78
BIGHORN BASIN ................................ 10 of 11 * 81
SHOSHONE RIVER ............................... 5 of 6 * 99
POWDER RIVER ................................. 6 of 7 * 80
TONGUE RIVER ................................. 4 of 7 * 81
BELLE FOURCHE ................................ 3 of 3 * 86
CHEYENNE RIVER BASIN ......................... 2 of 2 * 71
UPPER N. PLATTE .............................. 17 of 20 * 88
SWEETWATER ................................... 2 of 3 * *
LOWER N. PLATTE .............................. 3 of 4 * 92
LARAMIE RIVER ................................ 7 of 7 * 97
S. PLATTE .................................... 1 of 1 * 84
LITTLE SNAKE RIVER ........................... 8 of 9 * 80
UPPER GREEN RIVER ............................ 14 of 15 * 90
LOWER GREEN RIVER ............................ 8 of 13 * 89
UPPER BEAR RIVER ............................. 10 of 13 * 85
-----------------------------------------------------------------------------
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
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