Wyoming Snow Precipitation Update
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 FRIDAY: FEBRUARY 21 , 2025
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
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WYOMING
SNAKE RIVER
Base Camp 7040 15.1 14.1 107 15.7 15.8 99
Blind Bull Sum 8880 20.7 17.9 116 15.3 13.8 111
Cottonwood Creek 7710 20.4 16.2 126 22.3 18.6 120
East Rim Divide 8010 8.7 8.0 109 8.8 8.4 105
Grand Targhee 9260 31.3 32.0 98 23.8 25.0 95
Granite Creek 6770 14.3 13.4 107 14.5 15.2 95
Grassy Lake 7330 24.7 24.5 101 27.3 26.9 101
Gros Ventre Summit 8760 9.4 9.2 102 9.2 8.7 106
Gunsight Pass 9830 11.4 9.6 119 10.6 10.4 102
Lewis Lake Divide 7880 23.3 22.2 105 -M 25.6 *
Loomis Park 8240 13.0 11.5 113 13.2 12.6 105
Phillips Bench 8160 19.6 19.5 101 19.6 20.4 96
Salt River Summit 7630 12.5 10.1 124 10.7 11.6 92
Snake River Station 6900 15.8 13.8 114 17.0 16.8 101
Somsen Ranch 6830 11.6 9.8 118 12.5 12.6 99
Spring Creek Divide 9020 20.8 18.0 116 20.5 18.2 113
Thumb Divide 7970 10.9 11.6 94 10.6 12.8 83
Togwotee Pass 9590 17.4 17.4 100 19.0 18.4 103
Triple Peak 8520 22.1 17.0 130 22.1 18.8 118
Two Ocean Plateau 9240 21.0 21.7 97 18.0 19.0 95
Willow Creek 8060 26.5 21.4 124 27.5 24.0 115
Younts Peak 8340 10.9 11.0 99 10.5 11.0 95
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Basin Index (%) 109 103
MADISON HEADWATERS IN WYOMING
Black Bear 8160 25.1 28.0 90 25.3 26.4 96
Canyon 7870 9.9 -M * 10.3 -M *
Madison Plateau 7710 15.4 16.2 95 17.7 17.8 99
West Yellowstone 6680 8.5 8.6 99 9.6 10.7 90
Whiskey Creek 6790 11.6 11.4 102 15.1 13.6 111
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Basin Index (%) 94 99
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.4 16.8 92 14.4 15.6 92
Canyon 7870 9.9 -M * 10.3 -M *
Evening Star 9040 18.3 20.4 90 20.2 22.1 91
Fisher Creek 9110 21.6 25.2 86 23.1 24.3 95
Monument Peak 8740 13.7 15.4 89 16.1 16.5 98
Northeast Entrance 7420 8.5 7.8 109 9.4 10.2 92
Parker Peak 9420 17.1 16.0 107 17.1 15.1 113
Sylvan Lake 8440 14.1 14.4 98 16.9 17.6 96
Thumb Divide 7970 10.9 11.6 94 10.6 12.8 83
Two Ocean Plateau 9240 21.0 21.7 97 18.0 19.0 95
White Mill 8730 17.0 17.8 96 16.0 17.2 93
Wolverine 7650 10.4 9.2 113 11.6 9.4 123
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Basin Index (%) 95 96
WIND RIVER
Burroughs Creek 8760 8.6 -M * 11.7 -M *
Castle Creek 8410 5.2 5.2 100 5.8 6.4 91
Cold Springs 9640 5.6 5.6 100 6.0 6.7 90
Deer Park 9690 13.5 9.7 139 14.7 12.2 120
Hobbs Park 10080 10.6 9.4 113 10.3 8.2 126
Kirwin 9580 7.5 7.6 99 9.0 8.5 106
Little Warm 9370 8.1 7.5 108 9.8 8.8 111
South Pass 9040 11.2 10.2 110 12.2 10.3 118
St. Lawrence Alt 8610 3.2 -M * 5.7 -M *
Togwotee Pass 9590 17.4 17.4 100 19.0 18.4 103
Townsend Creek 8720 7.0 6.2 113 9.0 7.7 117
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Basin Index (%) 109 110
BIGHORN BASIN
Bald Mtn. 9360 16.6 13.8 120 13.5 11.4 118
Bear Trap Meadow 8200 4.7 4.6 102 4.6 5.8 79
Bone Springs Div 9340 11.7 11.6 101 9.0 11.1 81
Grave Springs 8560 5.9 5.8 102 7.0 6.6 106
Kirwin 9580 7.5 7.6 99 9.0 8.5 106
Marquette 8800 6.4 4.8 133 7.4 6.4 116
Middle Powder 7760 7.0 7.2 97 5.7 6.7 85
Owl Creek 8990 3.6 3.9 92 4.4 4.4 100
Powder River Pass 9480 5.9 7.9 75 7.6 9.2 83
Shell Creek 9570 9.7 10.8 90 8.8 9.8 90
Timber Creek 7910 3.6 3.2 112 4.0 5.3 75
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Basin Index (%) 102 95
SHOSHONE RIVER
Blackwater 9840 17.3 16.6 104 16.4 16.0 102
Evening Star 9040 18.3 20.4 90 20.2 22.1 91
Marquette 8800 6.4 4.8 133 7.4 6.4 116
Sylvan Lake 8440 14.1 14.4 98 16.9 17.6 96
Sylvan Road 7140 9.5 9.0 106 10.7 13.4 80
Younts Peak 8340 10.9 11.0 99 10.5 11.0 95
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Basin Index (%) 100 95
POWDER RIVER
Bear Trap Meadow 8200 4.7 4.6 102 4.6 5.8 79
Cloud Peak Reservoir 9830 8.0 10.3 78 8.3 9.5 87
Grave Springs 8560 5.9 5.8 102 7.0 6.6 106
Hansen Sawmill 8360 3.1 4.8 65 4.4 5.8 76
Middle Powder 7760 7.0 7.2 97 5.7 6.7 85
Powder River Pass 9480 5.9 7.9 75 7.6 9.2 83
Soldier Park 8680 2.3 4.8 48 4.5 6.8 66
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Basin Index (%) 81 84
TONGUE RIVER
Big Goose 8010 4.9 5.8 84 6.3 7.4 85
Bone Springs Div 9340 11.7 11.6 101 9.0 11.1 81
Burgess Junction 7900 8.3 7.7 108 9.2 8.6 107
Dome Lake 8890 6.5 8.0 81 6.5 8.7 75
Little Goose 8560 6.1 7.0 87 7.4 8.8 84
Sucker Creek 8840 8.8 8.7 101 10.9 9.8 111
Tie Creek 7050 5.6 4.2 133 8.0 7.8 103
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Basin Index (%) 98 92
BELLE FOURCHE
Blind Park 6900 5.2 5.8 90 7.5 7.9 95
Cole Canyon 5930 4.9 4.2 117 6.3 6.4 98
North Rapid Creek 6150 4.2 5.6 75 5.7 6.6 86
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Basin Index (%) 92 93
CHEYENNE RIVER BASIN
Blind Park 6900 5.2 5.8 90 7.5 7.9 95
North Rapid Creek 6150 4.2 5.6 75 5.7 6.6 86
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Basin Index (%) 82 91
UPPER N. PLATTE
Arapaho Ridge 10960 16.8 16.7 101 16.4 16.7 98
Blackhall Mtn 9830 22.4 21.5 104 23.7 21.6 110
Cinnabar Park 9670 15.4 16.2 95 17.5 17.8 98
Columbine 9170 21.6 17.4 124 21.7 18.0 121
Divide Peak 8700 13.6 14.2 96 16.0 16.0 100
Joe Wright 10140 17.6 14.6 121 22.3 18.9 118
Laprele Creek 8370 6.8 6.6 103 7.3 8.0 91
Med Bow 10500 31.7 -M * 27.7 -M *
Never Summer 10300 14.8 14.6 101 12.4 12.2 102
North French Creek 10150 25.2 19.9 127 24.0 19.0 126
Old Battle 9850 21.9 23.0 95 22.4 25.1 89
Rawah 9100 8.8 8.5 104 11.2 11.9 94
Sage Creek Basin 7830 9.5 11.3 84 9.9 10.1 98
Sand Lake 10080 22.3 19.6 114 21.8 17.2 127
South Brush Creek 8480 9.0 8.8 102 9.1 10.0 91
Tower 10610 34.7 32.0 108 34.0 29.6 115
Webber Springs 9250 15.1 16.0 94 17.3 19.0 91
Whiskey Park 8950 21.5 20.2 106 23.0 21.2 108
Willow Creek Pass 9520 10.1 10.1 100 10.2 10.2 100
Zirkel 9320 20.3 21.6 94 24.7 23.8 104
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Basin Index (%) 105 106
SWEETWATER
Deer Park 9690 13.5 9.7 139 14.7 12.2 120
Larsen Creek 8880 6.5 7.9 82 9.7 9.7 100
South Pass 9040 11.2 10.2 110 12.2 10.3 118
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Basin Index (%) 112 114
LOWER N. PLATTE
Casper Mtn. 7940 5.7 9.0 63 6.9 9.4 73
Laprele Creek 8370 6.8 6.6 103 7.3 8.0 91
Reno Hill 8410 7.8 9.4 83 9.7 10.2 95
Windy Peak 7900 5.0 5.6 89 5.3 7.2 74
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Basin Index (%) 83 84
LARAMIE RIVER
Brooklyn Lake 10250 19.2 15.4 125 19.6 15.8 124
Cinnabar Park 9670 15.4 16.2 95 17.5 17.8 98
Crow Creek 8320 3.2 5.7 56 6.0 7.7 78
Deadman Hill 10240 13.3 12.5 106 13.8 12.4 111
Rawah 9100 8.8 8.5 104 11.2 11.9 94
Roach 9710 10.6 11.6 91 13.1 13.8 95
Windy Peak 7900 5.0 5.6 89 5.3 7.2 74
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Basin Index (%) 100 100
S. PLATTE
Crow Creek 8320 3.2 5.7 56 6.0 7.7 78
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Basin Index (%) 56 78
LITTLE SNAKE RIVER
Battle Mountain 7460 9.2 8.9 103 12.4 11.6 107
Divide Peak 8700 13.6 14.2 96 16.0 16.0 100
Elk River 8710 13.2 14.2 93 15.7 14.5 108
Elkhead Divide 8780 13.0 -M * 14.6 -M *
Little Snake River 8930 19.9 21.0 95 25.1 26.4 95
Old Battle 9850 21.9 23.0 95 22.4 25.1 89
Sage Creek Basin 7830 9.5 11.3 84 9.9 10.1 98
Sandstone RS 8150 11.6 10.1 115 11.7 13.6 86
Whiskey Park 8950 21.5 20.2 106 23.0 21.2 108
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Basin Index (%) 98 98
UPPER GREEN RIVER
Big Sandy Opening 9100 8.3 9.4 88 8.5 9.2 92
Blind Bull Sum 8880 20.7 17.9 116 15.3 13.8 111
East Rim Divide 8010 8.7 8.0 109 8.8 8.4 105
Elkhart Park G.S. 9410 9.8 9.0 109 9.7 9.4 103
Gros Ventre Summit 8760 9.4 9.2 102 9.2 8.7 106
Gunsight Pass 9830 11.4 9.6 119 10.6 10.4 102
Indian Creek 9400 19.7 16.8 117 17.4 14.7 118
Kendall R.S. 7790 11.5 9.4 122 11.4 10.3 111
Larsen Creek 8880 6.5 7.9 82 9.7 9.7 100
Loomis Park 8240 13.0 11.5 113 13.2 12.6 105
New Fork Lake 8380 8.7 8.0 109 -M 8.0 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 11.7 9.8 119 13.1 10.2 128
Spring Creek Divide 9020 20.8 18.0 116 20.5 18.2 113
Triple Peak 8520 22.1 17.0 130 22.1 18.8 118
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Basin Index (%) 113 110
LOWER GREEN RIVER
Blacks Fork Jct 8880 9.3 6.2 150 11.1 9.4 118
Buck Pasture 9620 11.0 -M * 14.4 -M *
EF Blacks Fork GS 9360 8.2 8.0 102 10.1 8.0 126
Hams Fork 7870 10.4 8.5 122 9.9 8.1 122
Henrys Fork 10180 -M -M * 10.0 -M *
Hewinta 9510 8.4 7.0 120 11.8 10.0 118
Hickerson Park 9130 5.7 5.5 104 7.7 7.4 104
Hole-in-Rock 9170 4.2 5.3 79 7.6 7.1 107
Indian Creek 9400 19.7 16.8 117 17.4 14.7 118
Kelley R.S. 8240 13.2 10.8 122 13.9 12.4 112
Spirit Lk 10240 8.8 8.4 105 10.0 12.0 83
Steel Creek Park 10140 12.7 10.6 120 14.0 11.8 119
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Basin Index (%) 115 112
UPPER BEAR RIVER
Bear River RS 8510 8.2 7.0 117 10.7 8.8 122
Bug Lake 7980 15.4 14.2 108 14.8 13.8 107
Burts Miller Ranch 7900 5.5 5.0 110 9.8 5.5 178
Chalk Creek #1 9160 -M 16.0 * -M 17.0 *
Giveout 6940 7.9 7.6 104 9.7 9.2 105
Hayden Fork 9160 11.4 11.2 102 16.9 15.0 113
Kelley R.S. 8240 13.2 10.8 122 13.9 12.4 112
Lily Lake 9130 9.8 9.5 103 12.1 11.5 105
Monte Cristo 8930 19.5 19.4 101 18.2 19.0 96
Salt River Summit 7630 12.5 10.1 124 10.7 11.6 92
Spring Creek Divide 9020 20.8 18.0 116 20.5 18.2 113
Trial Lake 9970 18.3 16.5 111 19.1 16.8 114
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Basin Index (%) 110 110
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Median (or Average) Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median (or Average) represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median (or Average) value for those sites on this day.
The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Median (or Average) value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1991-2020.
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 or average for the day is less than 10% of the maximum
median or average value for the year.
* Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians or averages and the resulting fraction
multiplied by 100.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
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 TOTAL 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.
Contact your state water supply staff for assistance.
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.
