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 TUESDAY: APRIL 22 , 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 13.6 13.4 101 21.2 21.6 98
Blind Bull Sum 8880 27.2 25.4 107 19.7 18.8 105
Cottonwood Creek 7710 22.0 20.2 109 29.7 26.8 111
East Rim Divide 8010 6.0 9.4 64 13.1 11.8 111
Grand Targhee 9260 40.1 46.7 86 30.7 34.8 88
Granite Creek 6770 14.1 12.0 118 18.9 19.6 96
Grassy Lake 7330 28.3 31.8 89 35.3 37.4 94
Gros Ventre Summit 8760 12.5 13.2 95 14.4 13.6 106
Gunsight Pass 9830 13.3 13.2 101 14.9 15.0 99
Lewis Lake Divide 7880 30.4 32.8 93 36.2 35.2 103
Loomis Park 8240 13.1 13.0 101 18.8 17.4 108
Phillips Bench 8160 24.4 26.7 91 27.7 27.6 100
Salt River Summit 7630 12.1 11.0 110 14.7 17.1 86
Snake River Station 6900 15.2 14.6 104 22.4 23.4 96
Somsen Ranch 6830 5.7 6.4 89 17.3 17.4 99
Spring Creek Divide 9020 28.2 25.6 110 26.6 24.6 108
Thumb Divide 7970 11.8 17.0 69 15.7 19.6 80
Togwotee Pass 9590 24.5 24.9 98 26.5 26.1 102
Triple Peak 8520 25.2 20.8 121 28.8 27.0 107
Two Ocean Plateau 9240 30.7 32.4 95 25.5 28.6 89
Willow Creek 8060 31.1 28.4 110 37.9 35.2 108
Younts Peak 8340 12.9 15.2 85 15.2 16.4 93
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Basin Index (%) 97 99
MADISON HEADWATERS IN WYOMING
Black Bear 8160 33.2 39.5 84 35.8 39.2 91
Canyon 7870 12.3 13.3 92 14.5 16.8 86
Madison Plateau 7710 22.4 23.6 95 26.2 25.9 101
West Yellowstone 6680 4.5 6.1 74 13.6 15.4 88
Whiskey Creek 6790 14.3 15.7 91 21.5 21.8 99
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Basin Index (%) 88 94
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 24.3 23.8 102 22.5 22.0 102
Canyon 7870 12.3 13.3 92 14.5 16.8 86
Evening Star 9040 26.7 27.0 99 29.8 30.5 98
Fisher Creek 9110 31.7 35.6 89 33.4 35.6 94
Monument Peak 8740 19.9 22.2 90 23.2 23.8 97
Northeast Entrance 7420 5.5 6.2 89 14.3 14.0 102
Parker Peak 9420 26.4 24.0 110 25.1 21.3 118
Sylvan Lake 8440 15.7 20.8 75 22.9 25.0 92
Thumb Divide 7970 11.8 17.0 69 15.7 19.6 80
Two Ocean Plateau 9240 30.7 32.4 95 25.5 28.6 89
White Mill 8730 26.1 25.8 101 23.8 24.2 98
Wolverine 7650 9.5 7.2 132 16.3 13.2 123
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Basin Index (%) 94 97
WIND RIVER
Burroughs Creek 8760 10.0 -M * 17.3 -M *
Castle Creek 8410 2.5 3.6 69 8.8 9.0 98
Cold Springs 9640 4.0 6.2 65 10.2 10.1 101
Deer Park 9690 17.1 15.9 108 21.4 20.3 105
Hobbs Park 10080 14.8 15.5 95 16.5 14.8 111
Kirwin 9580 11.9 11.6 103 15.0 13.6 110
Little Warm 9370 9.7 10.2 95 14.4 12.8 112
South Pass 9040 14.3 15.3 93 18.7 17.4 107
St. Lawrence Alt 8610 .8 -M * 10.8 -M *
Togwotee Pass 9590 24.5 24.9 98 26.5 26.1 102
Townsend Creek 8720 11.0 9.7 113 15.3 13.1 117
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Basin Index (%) 97 107
BIGHORN BASIN
Bald Mtn. 9360 21.8 19.7 111 17.9 17.2 104
Bear Trap Meadow 8200 .7 3.6 19 7.5 10.2 74
Bone Springs Div 9340 17.2 17.6 98 12.7 17.2 74
Grave Springs 8560 6.4 8.2 78 10.8 11.0 98
Kirwin 9580 11.9 11.6 103 15.0 13.6 110
Marquette 8800 9.4 7.8 121 12.6 10.8 117
Middle Powder 7760 9.5 11.8 81 9.4 11.2 84
Owl Creek 8990 1.1 3.6 31 8.1 7.2 112
Powder River Pass 9480 6.4 10.6 60 11.9 14.5 82
Shell Creek 9570 13.8 16.5 84 13.0 15.2 86
Timber Creek 7910 5.2 4.9 106 9.8 9.1 108
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Basin Index (%) 89 94
SHOSHONE RIVER
Blackwater 9840 26.1 25.4 103 24.4 24.2 101
Evening Star 9040 26.7 27.0 99 29.8 30.5 98
Marquette 8800 9.4 7.8 121 12.6 10.8 117
Sylvan Lake 8440 15.7 20.8 75 22.9 25.0 92
Sylvan Road 7140 .0 9.1 0 14.2 17.6 81
Younts Peak 8340 12.9 15.2 85 15.2 16.4 93
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Basin Index (%) 86 96
POWDER RIVER
Bear Trap Meadow 8200 .7 3.6 19 7.5 10.2 74
Cloud Peak Reservoir 9830 11.4 15.7 73 13.6 15.1 90
Grave Springs 8560 6.4 8.2 78 10.8 11.0 98
Hansen Sawmill 8360 3.7 5.2 71 8.8 9.9 89
Middle Powder 7760 9.5 11.8 81 9.4 11.2 84
Powder River Pass 9480 6.4 10.6 60 11.9 14.5 82
Soldier Park 8680 1.0 6.5 15 8.0 10.8 74
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Basin Index (%) 63 85
TONGUE RIVER
Big Goose 8010 7.9 8.6 92 11.3 11.4 99
Bone Springs Div 9340 17.2 17.6 98 12.7 17.2 74
Burgess Junction 7900 12.2 12.0 102 13.2 13.8 96
Dome Lake 8890 10.9 11.8 92 11.0 14.8 74
Little Goose 8560 9.4 10.5 90 13.5 14.0 96
Sucker Creek 8840 11.4 12.8 89 15.7 15.8 99
Tie Creek 7050 4.8 4.4 109 13.1 12.9 102
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Basin Index (%) 95 91
BELLE FOURCHE
Blind Park 6900 .0 3.9 0 10.2 12.5 82
Cole Canyon 5930 .0 2.2 0 10.3 10.2 101
North Rapid Creek 6150 .0 3.9 0 8.4 10.3 82
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Basin Index (%) 0 88
CHEYENNE RIVER BASIN
Blind Park 6900 .0 3.9 0 10.2 12.5 82
North Rapid Creek 6150 .0 3.9 0 8.4 10.3 82
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Basin Index (%) 0 82
UPPER N. PLATTE
Arapaho Ridge 10960 20.8 23.9 87 21.8 24.0 91
Blackhall Mtn 9830 30.8 32.9 94 33.3 31.8 105
Cinnabar Park 9670 15.9 19.7 81 23.3 24.7 94
Columbine 9170 18.0 21.0 86 28.1 27.0 104
Divide Peak 8700 13.5 18.7 72 21.0 23.3 90
Joe Wright 10140 22.5 22.2 101 29.9 28.6 105
Laprele Creek 8370 5.6 7.1 79 11.2 13.2 85
Med Bow 10500 40.2 -M * 36.2 -M *
Never Summer 10300 21.3 22.0 97 18.1 18.8 96
North French Creek 10150 33.2 31.6 105 31.9 30.2 106
Old Battle 9850 30.5 33.8 90 30.8 36.0 86
Rawah 9100 7.3 9.8 74 15.4 17.4 89
Sage Creek Basin 7830 1.2 6.0 20 12.9 13.8 93
Sand Lake 10080 29.3 30.5 96 29.1 27.0 108
South Brush Creek 8480 6.4 8.8 73 13.0 15.0 87
Tower 10610 43.7 46.0 95 44.4 42.4 105
Webber Springs 9250 17.5 22.0 80 24.2 27.6 88
Whiskey Park 8950 26.1 26.7 98 30.4 30.0 101
Willow Creek Pass 9520 14.1 14.8 95 14.4 14.8 97
Zirkel 9320 18.5 25.5 73 31.9 33.2 96
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Basin Index (%) 89 97
SWEETWATER
Deer Park 9690 17.1 15.9 108 21.4 20.3 105
Larsen Creek 8880 2.6 7.6 34 13.7 15.1 91
South Pass 9040 14.3 15.3 93 18.7 17.4 107
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Basin Index (%) 88 102
LOWER N. PLATTE
Casper Mtn. 7940 8.7 13.8 63 12.8 15.6 82
Laprele Creek 8370 5.6 7.1 79 11.2 13.2 85
Reno Hill 8410 12.2 14.0 87 16.1 17.2 94
Windy Peak 7900 4.5 7.0 64 8.5 11.5 74
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Basin Index (%) 74 85
LARAMIE RIVER
Brooklyn Lake 10250 22.7 22.6 100 26.0 23.8 109
Cinnabar Park 9670 15.9 19.7 81 23.3 24.7 94
Crow Creek 8320 .0 2.7 0 9.3 11.9 78
Deadman Hill 10240 18.3 18.2 101 19.1 19.6 97
Rawah 9100 7.3 9.8 74 15.4 17.4 89
Roach 9710 12.4 16.4 76 18.4 20.7 89
Windy Peak 7900 4.5 7.0 64 8.5 11.5 74
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Basin Index (%) 84 93
S. PLATTE
Crow Creek 8320 .0 2.7 0 9.3 11.9 78
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Basin Index (%) 0 78
LITTLE SNAKE RIVER
Battle Mountain 7460 .1 4.8 2 16.5 16.4 101
Divide Peak 8700 13.5 18.7 72 21.0 23.3 90
Elk River 8710 10.8 14.8 73 21.2 21.0 101
Elkhead Divide 8780 13.0 -M * 20.6 -M *
Little Snake River 8930 21.8 23.5 93 32.6 34.4 95
Old Battle 9850 30.5 33.8 90 30.8 36.0 86
Sage Creek Basin 7830 1.2 6.0 20 12.9 13.8 93
Sandstone RS 8150 7.8 9.8 80 15.8 19.0 83
Whiskey Park 8950 26.1 26.7 98 30.4 30.0 101
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Basin Index (%) 81 93
UPPER GREEN RIVER
Big Sandy Opening 9100 12.1 13.0 93 13.4 14.0 96
Blind Bull Sum 8880 27.2 25.4 107 19.7 18.8 105
East Rim Divide 8010 6.0 9.4 64 13.1 11.8 111
Elkhart Park G.S. 9410 11.7 13.1 89 14.5 13.4 108
Gros Ventre Summit 8760 12.5 13.2 95 14.4 13.6 106
Gunsight Pass 9830 13.3 13.2 101 14.9 15.0 99
Indian Creek 9400 25.5 24.1 106 24.2 20.6 117
Kendall R.S. 7790 9.8 8.2 120 16.0 13.9 115
Larsen Creek 8880 2.6 7.6 34 13.7 15.1 91
Loomis Park 8240 13.1 13.0 101 18.8 17.4 108
New Fork Lake 8380 7.0 9.0 78 -M 11.2 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 10.7 10.3 104 17.2 14.5 119
Spring Creek Divide 9020 28.2 25.6 110 26.6 24.6 108
Triple Peak 8520 25.2 20.8 121 28.8 27.0 107
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Basin Index (%) 100 107
LOWER GREEN RIVER
Blacks Fork Jct 8880 8.0 6.6 121 14.2 13.4 106
Buck Pasture 9620 10.5 -M * 19.8 -M *
EF Blacks Fork GS 9360 6.3 10.7 59 13.4 12.6 106
Hams Fork 7870 5.5 6.9 80 14.1 11.5 123
Henrys Fork 10180 -M -M * 13.9 -M *
Hewinta 9510 6.5 7.2 90 15.3 15.2 101
Hickerson Park 9130 .3 5.0 6 10.5 11.4 92
Hole-in-Rock 9170 1.4 5.9 24 11.0 11.2 98
Indian Creek 9400 25.5 24.1 106 24.2 20.6 117
Kelley R.S. 8240 14.9 13.9 107 19.1 17.4 110
Spirit Lk 10240 11.3 13.1 86 15.6 19.3 81
Steel Creek Park 10140 16.2 16.2 100 18.3 17.4 105
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Basin Index (%) 88 104
UPPER BEAR RIVER
Bear River RS 8510 .0 2.4 0 13.7 13.0 105
Bug Lake 7980 13.9 16.8 83 20.4 18.8 109
Burts Miller Ranch 7900 .0 .0 * 12.8 8.7 147
Chalk Creek #1 9160 17.9 22.0 81 24.4 24.2 101
Giveout 6940 1.3 2.0 65 13.6 13.3 102
Hayden Fork 9160 7.3 10.9 67 22.3 21.9 102
Kelley R.S. 8240 14.9 13.9 107 19.1 17.4 110
Lily Lake 9130 8.3 11.0 75 15.8 16.2 98
Monte Cristo 8930 22.4 26.0 86 25.9 27.0 96
Salt River Summit 7630 12.1 11.0 110 14.7 17.1 86
Spring Creek Divide 9020 28.2 25.6 110 26.6 24.6 108
Trial Lake 9970 23.8 22.4 106 25.7 23.4 110
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Basin Index (%) 92 104
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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.
