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 THURSDAY: FEBRUARY 20 , 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 14.0 108 15.6 15.7 99
Blind Bull Sum 8880 20.8 17.8 117 15.3 13.7 112
Cottonwood Creek 7710 20.4 16.2 126 22.2 18.6 119
East Rim Divide 8010 8.6 8.0 108 8.8 8.4 105
Grand Targhee 9260 31.2 31.8 98 23.7 24.8 96
Granite Creek 6770 14.3 13.4 107 14.5 15.2 95
Grassy Lake 7330 24.7 24.4 101 27.2 26.6 102
Gros Ventre Summit 8760 9.4 9.2 102 9.2 8.7 106
Gunsight Pass 9830 11.4 9.4 121 10.6 10.4 102
Lewis Lake Divide 7880 23.3 22.2 105 -M 25.4 *
Loomis Park 8240 13.0 11.4 114 13.2 12.6 105
Phillips Bench 8160 19.6 19.5 101 19.3 20.2 96
Salt River Summit 7630 12.4 10.1 123 10.7 11.6 92
Snake River Station 6900 15.8 13.7 115 16.7 16.8 99
Somsen Ranch 6830 11.5 9.8 117 12.5 12.6 99
Spring Creek Divide 9020 20.6 18.0 114 20.5 18.0 114
Thumb Divide 7970 10.9 11.5 95 10.5 12.7 83
Togwotee Pass 9590 17.4 17.2 101 18.9 18.4 103
Triple Peak 8520 22.1 16.8 132 22.1 18.8 118
Two Ocean Plateau 9240 20.9 21.6 97 17.5 18.9 93
Willow Creek 8060 26.6 21.2 125 27.4 23.7 116
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 27.6 91 25.2 26.2 96
Canyon 7870 9.9 -M * 10.2 -M *
Madison Plateau 7710 15.5 16.2 96 17.6 17.5 101
West Yellowstone 6680 8.5 8.4 101 9.6 10.6 91
Whiskey Creek 6790 11.6 11.3 103 15.1 13.6 111
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Basin Index (%) 96 99
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.4 16.8 92 14.4 15.6 92
Canyon 7870 9.9 -M * 10.2 -M *
Evening Star 9040 18.4 20.3 91 20.1 21.9 92
Fisher Creek 9110 21.6 25.0 86 22.8 24.2 94
Monument Peak 8740 13.7 15.4 89 16.0 16.4 98
Northeast Entrance 7420 8.5 7.8 109 9.4 10.2 92
Parker Peak 9420 17.0 15.9 107 17.0 15.0 113
Sylvan Lake 8440 14.0 14.4 97 16.9 17.4 97
Thumb Divide 7970 10.9 11.5 95 10.5 12.7 83
Two Ocean Plateau 9240 20.9 21.6 97 17.5 18.9 93
White Mill 8730 17.0 17.8 96 16.0 17.0 94
Wolverine 7650 10.4 9.1 114 11.6 9.4 123
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Basin Index (%) 96 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 5.7 5.6 102 6.0 6.7 90
Deer Park 9690 13.4 9.6 140 14.7 12.2 120
Hobbs Park 10080 10.6 9.2 115 10.3 8.1 127
Kirwin 9580 7.5 7.6 99 9.0 8.4 107
Little Warm 9370 8.1 7.4 109 9.8 8.6 114
South Pass 9040 11.2 10.2 110 12.2 10.2 120
St. Lawrence Alt 8610 3.2 -M * 5.7 -M *
Togwotee Pass 9590 17.4 17.2 101 18.9 18.4 103
Townsend Creek 8720 7.0 6.1 115 8.9 7.6 117
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Basin Index (%) 110 110
BIGHORN BASIN
Bald Mtn. 9360 16.5 13.7 120 13.4 11.4 118
Bear Trap Meadow 8200 4.8 4.6 104 4.6 5.8 79
Bone Springs Div 9340 11.6 11.4 102 8.8 10.9 81
Grave Springs 8560 5.9 5.8 102 7.0 6.6 106
Kirwin 9580 7.5 7.6 99 9.0 8.4 107
Marquette 8800 6.4 4.8 133 7.4 6.4 116
Middle Powder 7760 7.0 7.0 100 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 16.4 105 16.3 16.0 102
Evening Star 9040 18.4 20.3 91 20.1 21.9 92
Marquette 8800 6.4 4.8 133 7.4 6.4 116
Sylvan Lake 8440 14.0 14.4 97 16.9 17.4 97
Sylvan Road 7140 9.4 9.0 104 10.7 13.3 80
Younts Peak 8340 10.9 11.0 99 10.5 11.0 95
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Basin Index (%) 101 95
POWDER RIVER
Bear Trap Meadow 8200 4.8 4.6 104 4.6 5.8 79
Cloud Peak Reservoir 9830 8.0 10.2 78 8.1 9.5 85
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 7.0 100 5.7 6.7 85
Powder River Pass 9480 5.9 7.9 75 7.6 9.2 83
Soldier Park 8680 2.1 4.7 45 4.4 6.6 67
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Basin Index (%) 82 83
TONGUE RIVER
Big Goose 8010 4.8 5.8 83 6.3 7.2 88
Bone Springs Div 9340 11.6 11.4 102 8.8 10.9 81
Burgess Junction 7900 8.2 7.6 108 9.2 8.6 107
Dome Lake 8890 6.4 8.0 80 6.2 8.6 72
Little Goose 8560 6.0 6.9 87 7.2 8.6 84
Sucker Creek 8840 8.8 8.8 100 10.7 9.6 111
Tie Creek 7050 5.6 4.1 137 7.8 7.8 100
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Basin Index (%) 98 92
BELLE FOURCHE
Blind Park 6900 5.2 5.8 90 7.1 7.9 90
Cole Canyon 5930 4.7 4.2 112 6.0 6.4 94
North Rapid Creek 6150 3.8 5.4 70 5.2 6.5 80
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Basin Index (%) 89 88
CHEYENNE RIVER BASIN
Blind Park 6900 5.2 5.8 90 7.1 7.9 90
North Rapid Creek 6150 3.8 5.4 70 5.2 6.5 80
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Basin Index (%) 80 85
UPPER N. PLATTE
Arapaho Ridge 10960 16.6 16.7 99 16.1 16.6 97
Blackhall Mtn 9830 22.3 21.5 104 23.6 21.5 110
Cinnabar Park 9670 15.3 16.0 96 17.4 17.8 98
Columbine 9170 21.3 17.4 122 21.3 17.8 120
Divide Peak 8700 13.4 14.2 94 15.6 16.0 98
Joe Wright 10140 17.1 14.6 117 21.8 18.6 117
Laprele Creek 8370 6.8 6.6 103 7.2 8.0 90
Med Bow 10500 31.5 -M * 27.6 -M *
Never Summer 10300 14.4 14.6 99 11.9 12.0 99
North French Creek 10150 25.2 19.8 127 23.8 18.9 126
Old Battle 9850 21.8 23.0 95 22.2 25.0 89
Rawah 9100 8.7 8.5 102 11.2 11.9 94
Sage Creek Basin 7830 9.6 11.3 85 9.9 10.1 98
Sand Lake 10080 22.3 19.0 117 21.6 17.0 127
South Brush Creek 8480 8.9 8.8 101 9.0 9.8 92
Tower 10610 34.3 31.9 108 33.5 29.4 114
Webber Springs 9250 15.1 16.0 94 17.2 18.8 91
Whiskey Park 8950 21.5 20.0 108 22.8 21.2 108
Willow Creek Pass 9520 9.8 10.0 98 9.8 10.2 96
Zirkel 9320 20.1 21.4 94 24.5 23.6 104
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Basin Index (%) 104 105
SWEETWATER
Deer Park 9690 13.4 9.6 140 14.7 12.2 120
Larsen Creek 8880 6.5 7.8 83 9.7 9.7 100
South Pass 9040 11.2 10.2 110 12.2 10.2 120
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Basin Index (%) 113 114
LOWER N. PLATTE
Casper Mtn. 7940 5.8 9.0 64 6.9 9.4 73
Laprele Creek 8370 6.8 6.6 103 7.2 8.0 90
Reno Hill 8410 7.7 9.4 82 9.6 10.2 94
Windy Peak 7900 5.0 5.6 89 5.2 7.2 72
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Basin Index (%) 83 83
LARAMIE RIVER
Brooklyn Lake 10250 19.1 15.4 124 19.4 15.7 124
Cinnabar Park 9670 15.3 16.0 96 17.4 17.8 98
Crow Creek 8320 3.2 5.7 56 5.9 7.5 79
Deadman Hill 10240 13.3 12.4 107 13.7 12.4 110
Rawah 9100 8.7 8.5 102 11.2 11.9 94
Roach 9710 10.6 11.6 91 13.0 13.8 94
Windy Peak 7900 5.0 5.6 89 5.2 7.2 72
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Basin Index (%) 100 99
S. PLATTE
Crow Creek 8320 3.2 5.7 56 5.9 7.5 79
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Basin Index (%) 56 79
LITTLE SNAKE RIVER
Battle Mountain 7460 9.2 8.9 103 12.4 11.4 109
Divide Peak 8700 13.4 14.2 94 15.6 16.0 98
Elk River 8710 13.1 14.1 93 15.4 14.4 107
Elkhead Divide 8780 12.8 -M * 14.5 -M *
Little Snake River 8930 19.8 20.4 97 24.9 26.3 95
Old Battle 9850 21.8 23.0 95 22.2 25.0 89
Sage Creek Basin 7830 9.6 11.3 85 9.9 10.1 98
Sandstone RS 8150 11.5 9.9 116 11.6 13.4 87
Whiskey Park 8950 21.5 20.0 108 22.8 21.2 108
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Basin Index (%) 98 98
UPPER GREEN RIVER
Big Sandy Opening 9100 8.2 9.4 87 8.4 9.1 92
Blind Bull Sum 8880 20.8 17.8 117 15.3 13.7 112
East Rim Divide 8010 8.6 8.0 108 8.8 8.4 105
Elkhart Park G.S. 9410 9.9 9.0 110 9.7 9.4 103
Gros Ventre Summit 8760 9.4 9.2 102 9.2 8.7 106
Gunsight Pass 9830 11.4 9.4 121 10.6 10.4 102
Indian Creek 9400 19.5 16.8 116 17.1 14.6 117
Kendall R.S. 7790 11.5 9.4 122 11.3 10.3 110
Larsen Creek 8880 6.5 7.8 83 9.7 9.7 100
Loomis Park 8240 13.0 11.4 114 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 11.5 9.8 117 13.0 10.2 127
Spring Creek Divide 9020 20.6 18.0 114 20.5 18.0 114
Triple Peak 8520 22.1 16.8 132 22.1 18.8 118
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Basin Index (%) 113 110
LOWER GREEN RIVER
Blacks Fork Jct 8880 9.2 6.2 148 11.0 9.4 117
Buck Pasture 9620 10.9 -M * 14.4 -M *
EF Blacks Fork GS 9360 8.0 8.0 100 9.9 8.0 124
Hams Fork 7870 10.1 8.5 119 9.6 8.1 119
Henrys Fork 10180 -M -M * 10.0 -M *
Hewinta 9510 8.2 6.9 119 11.6 9.9 117
Hickerson Park 9130 5.5 5.4 102 7.5 7.4 101
Hole-in-Rock 9170 4.0 5.1 78 7.4 7.1 104
Indian Creek 9400 19.5 16.8 116 17.1 14.6 117
Kelley R.S. 8240 13.0 10.8 120 13.6 12.4 110
Spirit Lk 10240 8.5 8.4 101 9.7 11.8 82
Steel Creek Park 10140 12.4 10.4 119 13.8 11.8 117
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Basin Index (%) 114 111
UPPER BEAR RIVER
Bear River RS 8510 7.9 7.0 113 10.5 8.8 119
Bug Lake 7980 14.6 14.1 104 14.0 13.8 101
Burts Miller Ranch 7900 5.2 5.0 104 9.5 5.5 173
Chalk Creek #1 9160 -M 16.0 * -M 16.8 *
Giveout 6940 7.8 7.7 101 9.6 9.2 104
Hayden Fork 9160 11.3 11.2 101 16.7 15.0 111
Kelley R.S. 8240 13.0 10.8 120 13.6 12.4 110
Lily Lake 9130 9.4 9.5 99 11.7 11.5 102
Monte Cristo 8930 19.0 19.2 99 18.2 18.8 97
Salt River Summit 7630 12.4 10.1 123 10.7 11.6 92
Spring Creek Divide 9020 20.6 18.0 114 20.5 18.0 114
Trial Lake 9970 18.1 16.4 110 19.0 16.8 113
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Basin Index (%) 108 109
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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.
