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 27 , 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 15.9 14.8 107 16.6 16.8 99
Blind Bull Sum 8880 21.5 19.0 113 15.8 14.8 107
Cottonwood Creek 7710 21.1 17.2 123 23.1 19.2 120
East Rim Divide 8010 8.9 8.8 101 9.0 9.0 100
Grand Targhee 9260 33.9 33.0 103 25.0 25.6 98
Granite Creek 6770 15.1 14.2 106 15.0 15.8 95
Grassy Lake 7330 26.2 26.0 101 28.4 27.9 102
Gros Ventre Summit 8760 9.4 9.4 100 9.3 9.4 99
Gunsight Pass 9830 11.7 10.2 115 10.8 10.8 100
Lewis Lake Divide 7880 25.1 24.6 102 28.1 26.4 106
Loomis Park 8240 13.3 12.4 107 13.5 13.8 98
Phillips Bench 8160 20.5 20.4 100 20.5 21.4 96
Salt River Summit 7630 12.9 10.6 122 11.0 12.5 88
Snake River Station 6900 17.2 14.2 121 18.1 17.3 105
Somsen Ranch 6830 11.7 10.8 108 12.8 13.2 97
Spring Creek Divide 9020 21.4 19.2 111 21.0 19.1 110
Thumb Divide 7970 11.1 12.4 90 10.7 13.4 80
Togwotee Pass 9590 18.2 18.4 99 19.9 19.6 102
Triple Peak 8520 22.6 18.4 123 22.7 20.1 113
Two Ocean Plateau 9240 22.2 22.6 98 18.8 20.2 93
Willow Creek 8060 27.3 22.8 120 28.1 25.6 110
Younts Peak 8340 11.5 11.6 99 10.9 11.4 96
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Basin Index (%) 107 102
MADISON HEADWATERS IN WYOMING
Black Bear 8160 26.3 29.4 89 26.3 28.2 93
Canyon 7870 10.1 -M * 10.6 -M *
Madison Plateau 7710 16.0 17.0 94 18.2 19.7 92
West Yellowstone 6680 8.7 9.0 97 9.8 11.0 89
Whiskey Creek 6790 12.0 11.9 101 15.4 15.3 101
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Basin Index (%) 94 94
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 16.3 17.8 92 15.2 16.3 93
Canyon 7870 10.1 -M * 10.6 -M *
Evening Star 9040 19.7 21.4 92 21.5 23.6 91
Fisher Creek 9110 23.0 26.1 88 24.2 25.4 95
Monument Peak 8740 14.4 16.4 88 16.8 16.8 100
Northeast Entrance 7420 9.1 8.5 107 10.0 10.7 93
Parker Peak 9420 17.8 16.8 106 17.9 15.6 115
Sylvan Lake 8440 14.7 15.4 95 17.3 18.2 95
Thumb Divide 7970 11.1 12.4 90 10.7 13.4 80
Two Ocean Plateau 9240 22.2 22.6 98 18.8 20.2 93
White Mill 8730 18.2 18.9 96 16.9 18.3 92
Wolverine 7650 10.8 9.8 110 12.1 9.9 122
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Basin Index (%) 95 96
WIND RIVER
Burroughs Creek 8760 9.1 -M * 12.4 -M *
Castle Creek 8410 5.3 6.2 85 5.8 6.9 84
Cold Springs 9640 5.8 5.7 102 6.1 6.8 90
Deer Park 9690 13.5 10.0 135 14.6 13.1 111
Hobbs Park 10080 10.4 9.8 106 10.2 8.5 120
Kirwin 9580 7.6 8.4 90 9.3 8.9 104
Little Warm 9370 8.3 7.7 108 10.1 9.2 110
South Pass 9040 11.2 11.3 99 12.2 11.0 111
St. Lawrence Alt 8610 3.1 -M * 5.6 -M *
Togwotee Pass 9590 18.2 18.4 99 19.9 19.6 102
Townsend Creek 8720 6.8 6.5 105 8.8 7.9 111
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Basin Index (%) 104 106
BIGHORN BASIN
Bald Mtn. 9360 16.8 14.4 117 13.8 12.4 111
Bear Trap Meadow 8200 4.7 4.8 98 4.7 6.2 76
Bone Springs Div 9340 11.9 12.6 94 9.1 12.0 76
Grave Springs 8560 6.0 6.4 94 7.1 6.7 106
Kirwin 9580 7.6 8.4 90 9.3 8.9 104
Marquette 8800 6.3 5.1 124 7.5 6.6 114
Middle Powder 7760 7.0 7.7 91 5.8 6.8 85
Owl Creek 8990 3.6 4.2 86 4.4 4.6 96
Powder River Pass 9480 6.0 8.4 71 7.7 9.6 80
Shell Creek 9570 9.8 11.6 84 9.0 10.7 84
Timber Creek 7910 3.5 3.4 103 4.1 5.6 73
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Basin Index (%) 96 92
SHOSHONE RIVER
Blackwater 9840 18.0 17.0 106 17.3 16.8 103
Evening Star 9040 19.7 21.4 92 21.5 23.6 91
Marquette 8800 6.3 5.1 124 7.5 6.6 114
Sylvan Lake 8440 14.7 15.4 95 17.3 18.2 95
Sylvan Road 7140 10.0 10.0 100 11.1 13.8 80
Younts Peak 8340 11.5 11.6 99 10.9 11.4 96
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Basin Index (%) 100 95
POWDER RIVER
Bear Trap Meadow 8200 4.7 4.8 98 4.7 6.2 76
Cloud Peak Reservoir 9830 8.1 11.3 72 8.4 10.0 84
Grave Springs 8560 6.0 6.4 94 7.1 6.7 106
Hansen Sawmill 8360 3.2 5.0 64 4.5 6.0 75
Middle Powder 7760 7.0 7.7 91 5.8 6.8 85
Powder River Pass 9480 6.0 8.4 71 7.7 9.6 80
Soldier Park 8680 2.4 5.2 46 4.6 7.0 66
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Basin Index (%) 77 82
TONGUE RIVER
Big Goose 8010 4.8 6.0 80 6.3 7.8 81
Bone Springs Div 9340 11.9 12.6 94 9.1 12.0 76
Burgess Junction 7900 8.4 8.0 105 9.3 9.2 101
Dome Lake 8890 6.9 8.6 80 6.7 9.4 71
Little Goose 8560 6.1 7.4 82 7.4 9.3 80
Sucker Creek 8840 8.9 9.3 96 10.9 10.4 105
Tie Creek 7050 5.4 4.4 123 8.0 8.3 96
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Basin Index (%) 93 87
BELLE FOURCHE
Blind Park 6900 5.2 6.6 79 7.5 8.6 87
Cole Canyon 5930 4.9 4.7 104 6.3 7.1 89
North Rapid Creek 6150 4.2 5.8 72 5.8 7.0 83
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Basin Index (%) 84 86
CHEYENNE RIVER BASIN
Blind Park 6900 5.2 6.6 79 7.5 8.6 87
North Rapid Creek 6150 4.2 5.8 72 5.8 7.0 83
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Basin Index (%) 76 85
UPPER N. PLATTE
Arapaho Ridge 10960 16.9 17.2 98 16.5 16.9 98
Blackhall Mtn 9830 23.0 22.1 104 24.2 22.0 110
Cinnabar Park 9670 15.6 16.6 94 17.9 19.0 94
Columbine 9170 22.0 18.8 117 22.0 18.9 116
Divide Peak 8700 13.6 14.9 91 16.0 16.6 96
Joe Wright 10140 17.6 16.0 110 22.4 20.2 111
Laprele Creek 8370 6.9 7.1 97 7.4 8.4 88
Med Bow 10500 32.2 -M * 27.9 -M *
Never Summer 10300 15.1 15.8 96 12.4 13.1 95
North French Creek 10150 25.4 21.7 117 24.1 20.9 115
Old Battle 9850 22.3 23.8 94 22.5 26.0 87
Rawah 9100 8.6 9.0 96 11.2 12.2 92
Sage Creek Basin 7830 9.7 11.3 86 10.0 10.5 95
Sand Lake 10080 22.5 20.9 108 21.8 18.0 121
South Brush Creek 8480 9.0 9.2 98 9.1 10.8 84
Tower 10610 35.0 34.8 101 34.1 32.2 106
Webber Springs 9250 15.6 16.6 94 17.5 19.7 89
Whiskey Park 8950 21.8 21.0 104 23.0 21.8 106
Willow Creek Pass 9520 10.3 10.5 98 10.1 10.6 95
Zirkel 9320 20.7 22.4 92 25.0 24.7 101
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Basin Index (%) 101 101
SWEETWATER
Deer Park 9690 13.5 10.0 135 14.6 13.1 111
Larsen Creek 8880 6.3 9.2 68 9.5 10.6 90
South Pass 9040 11.2 11.3 99 12.2 11.0 111
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Basin Index (%) 102 105
LOWER N. PLATTE
Casper Mtn. 7940 5.7 9.5 60 7.0 10.1 69
Laprele Creek 8370 6.9 7.1 97 7.4 8.4 88
Reno Hill 8410 7.8 9.8 80 9.6 10.6 91
Windy Peak 7900 5.0 6.0 83 5.3 7.4 72
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Basin Index (%) 78 80
LARAMIE RIVER
Brooklyn Lake 10250 19.4 16.2 120 19.7 16.9 117
Cinnabar Park 9670 15.6 16.6 94 17.9 19.0 94
Crow Creek 8320 2.8 5.9 47 6.2 7.8 79
Deadman Hill 10240 13.3 13.1 102 13.8 13.0 106
Rawah 9100 8.6 9.0 96 11.2 12.2 92
Roach 9710 10.7 12.0 89 13.2 14.7 90
Windy Peak 7900 5.0 6.0 83 5.3 7.4 72
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Basin Index (%) 96 96
S. PLATTE
Crow Creek 8320 2.8 5.9 47 6.2 7.8 79
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Basin Index (%) 47 79
LITTLE SNAKE RIVER
Battle Mountain 7460 8.9 10.0 89 12.3 12.0 102
Divide Peak 8700 13.6 14.9 91 16.0 16.6 96
Elk River 8710 13.5 14.5 93 15.6 15.0 104
Elkhead Divide 8780 13.1 -M * 14.6 -M *
Little Snake River 8930 20.3 21.4 95 25.2 27.0 93
Old Battle 9850 22.3 23.8 94 22.5 26.0 87
Sage Creek Basin 7830 9.7 11.3 86 10.0 10.5 95
Sandstone RS 8150 11.9 10.0 119 11.6 14.2 82
Whiskey Park 8950 21.8 21.0 104 23.0 21.8 106
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Basin Index (%) 96 95
UPPER GREEN RIVER
Big Sandy Opening 9100 8.1 10.0 81 8.3 10.0 83
Blind Bull Sum 8880 21.5 19.0 113 15.8 14.8 107
East Rim Divide 8010 8.9 8.8 101 9.0 9.0 100
Elkhart Park G.S. 9410 9.9 9.6 103 9.8 10.0 98
Gros Ventre Summit 8760 9.4 9.4 100 9.3 9.4 99
Gunsight Pass 9830 11.7 10.2 115 10.8 10.8 100
Indian Creek 9400 20.1 18.6 108 17.7 15.6 113
Kendall R.S. 7790 11.8 9.6 123 11.7 10.6 110
Larsen Creek 8880 6.3 9.2 68 9.5 10.6 90
Loomis Park 8240 13.3 12.4 107 13.5 13.8 98
New Fork Lake 8380 8.8 8.5 104 -M 8.2 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 11.8 10.6 111 13.1 11.1 118
Spring Creek Divide 9020 21.4 19.2 111 21.0 19.1 110
Triple Peak 8520 22.6 18.4 123 22.7 20.1 113
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Basin Index (%) 107 104
LOWER GREEN RIVER
Blacks Fork Jct 8880 9.4 6.4 147 10.9 9.5 115
Buck Pasture 9620 11.0 -M * 14.6 -M *
EF Blacks Fork GS 9360 8.1 8.1 100 9.8 8.4 117
Hams Fork 7870 10.4 9.0 116 10.0 8.7 115
Henrys Fork 10180 -M -M * 10.1 -M *
Hewinta 9510 8.4 7.6 111 11.6 10.2 114
Hickerson Park 9130 5.7 5.8 98 7.6 7.8 97
Hole-in-Rock 9170 3.9 5.4 72 7.4 7.4 100
Indian Creek 9400 20.1 18.6 108 17.7 15.6 113
Kelley R.S. 8240 13.5 12.0 112 14.1 13.1 108
Spirit Lk 10240 8.8 8.8 100 9.8 12.5 78
Steel Creek Park 10140 12.7 11.2 113 14.1 12.0 118
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Basin Index (%) 109 107
UPPER BEAR RIVER
Bear River RS 8510 8.8 7.2 122 10.7 9.0 119
Bug Lake 7980 15.6 14.8 105 14.8 14.2 104
Burts Miller Ranch 7900 5.3 5.0 106 9.6 5.7 168
Chalk Creek #1 9160 15.1 16.5 92 18.0 17.3 104
Giveout 6940 7.9 7.6 104 9.9 9.6 103
Hayden Fork 9160 11.5 11.6 99 17.0 15.8 108
Kelley R.S. 8240 13.5 12.0 112 14.1 13.1 108
Lily Lake 9130 9.6 9.8 98 12.1 11.9 102
Monte Cristo 8930 19.9 20.0 100 19.1 19.6 97
Salt River Summit 7630 12.9 10.6 122 11.0 12.5 88
Spring Creek Divide 9020 21.4 19.2 111 21.0 19.1 110
Trial Lake 9970 18.3 17.4 105 19.2 17.8 108
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Basin Index (%) 105 107
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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.
