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 1 , 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 18.2 16.6 110 20.7 19.6 106
Blind Bull Sum 8880 26.6 23.5 113 18.7 17.5 107
Cottonwood Creek 7710 24.7 21.5 115 27.9 24.4 114
East Rim Divide 8010 10.6 10.4 102 11.5 10.9 106
Grand Targhee 9260 39.4 40.8 97 29.8 29.9 100
Granite Creek 6770 18.0 15.8 114 18.1 17.8 102
Grassy Lake 7330 31.5 31.8 99 34.4 33.4 103
Gros Ventre Summit 8760 13.0 12.8 102 13.2 12.0 110
Gunsight Pass 9830 13.7 12.6 109 13.6 13.4 101
Lewis Lake Divide 7880 32.1 30.0 107 34.8 31.8 109
Loomis Park 8240 14.9 15.3 97 16.6 16.4 101
Phillips Bench 8160 26.3 25.9 102 26.7 26.1 102
Salt River Summit 7630 15.5 13.4 116 13.7 15.5 88
Snake River Station 6900 19.2 16.8 114 21.7 21.3 102
Somsen Ranch 6830 13.8 11.4 121 16.6 16.3 102
Spring Creek Divide 9020 26.7 24.2 110 25.4 23.1 110
Thumb Divide 7970 14.8 15.8 94 14.4 17.0 85
Togwotee Pass 9590 24.2 22.9 106 25.6 24.0 107
Triple Peak 8520 28.9 22.4 129 27.4 24.4 112
Two Ocean Plateau 9240 28.6 28.2 101 24.7 25.4 97
Willow Creek 8060 35.4 29.0 122 34.6 31.8 109
Younts Peak 8340 15.3 14.2 108 14.7 14.4 102
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Basin Index (%) 108 104
MADISON HEADWATERS IN WYOMING
Black Bear 8160 33.1 37.0 89 33.9 35.6 95
Canyon 7870 12.3 -M * 13.0 -M *
Madison Plateau 7710 21.9 22.0 100 24.3 23.8 102
West Yellowstone 6680 10.4 10.2 102 12.5 13.6 92
Whiskey Creek 6790 15.4 15.2 101 20.2 19.2 105
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Basin Index (%) 96 99
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 21.4 21.2 101 19.8 19.4 102
Canyon 7870 12.3 -M * 13.0 -M *
Evening Star 9040 25.4 24.4 104 27.2 27.0 101
Fisher Creek 9110 28.6 32.0 89 29.8 31.6 94
Monument Peak 8740 17.7 19.8 89 20.4 20.8 98
Northeast Entrance 7420 9.5 9.4 101 12.2 12.4 98
Parker Peak 9420 24.0 20.0 120 22.9 19.3 119
Sylvan Lake 8440 18.3 19.1 96 21.5 22.4 96
Thumb Divide 7970 14.8 15.8 94 14.4 17.0 85
Two Ocean Plateau 9240 28.6 28.2 101 24.7 25.4 97
White Mill 8730 22.6 23.2 97 21.0 22.0 95
Wolverine 7650 12.0 11.0 109 14.6 12.0 122
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Basin Index (%) 99 100
WIND RIVER
Burroughs Creek 8760 12.3 -M * 16.5 -M *
Castle Creek 8410 6.2 6.1 102 8.2 8.2 100
Cold Springs 9640 7.4 7.2 103 8.9 8.8 101
Deer Park 9690 17.2 14.0 123 19.3 17.0 114
Hobbs Park 10080 14.5 13.8 105 14.8 12.8 116
Kirwin 9580 11.7 10.4 112 13.7 11.6 118
Little Warm 9370 10.7 10.2 105 13.2 11.5 115
South Pass 9040 14.6 14.5 101 16.7 15.0 111
St. Lawrence Alt 8610 5.4 -M * 9.6 -M *
Togwotee Pass 9590 24.2 22.9 106 25.6 24.0 107
Townsend Creek 8720 10.4 8.9 117 13.1 10.7 122
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Basin Index (%) 108 112
BIGHORN BASIN
Bald Mtn. 9360 20.5 18.8 109 16.9 15.4 110
Bear Trap Meadow 8200 5.4 6.0 90 6.4 7.8 82
Bone Springs Div 9340 15.4 16.4 94 11.5 14.8 78
Grave Springs 8560 8.2 8.2 100 10.0 8.9 112
Kirwin 9580 11.7 10.4 112 13.7 11.6 118
Marquette 8800 9.9 6.8 146 11.4 8.6 133
Middle Powder 7760 9.7 10.5 92 8.4 9.6 88
Owl Creek 8990 5.7 5.5 104 7.1 5.8 122
Powder River Pass 9480 7.2 10.6 68 9.6 12.0 80
Shell Creek 9570 12.6 14.8 85 11.4 13.3 86
Timber Creek 7910 6.3 4.6 137 7.7 7.6 101
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Basin Index (%) 100 99
SHOSHONE RIVER
Blackwater 9840 23.8 22.0 108 22.4 21.0 107
Evening Star 9040 25.4 24.4 104 27.2 27.0 101
Marquette 8800 9.9 6.8 146 11.4 8.6 133
Sylvan Lake 8440 18.3 19.1 96 21.5 22.4 96
Sylvan Road 7140 8.8 10.6 83 13.1 15.6 84
Younts Peak 8340 15.3 14.2 108 14.7 14.4 102
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Basin Index (%) 105 101
POWDER RIVER
Bear Trap Meadow 8200 5.4 6.0 90 6.4 7.8 82
Cloud Peak Reservoir 9830 10.8 14.1 77 11.1 12.7 87
Grave Springs 8560 8.2 8.2 100 10.0 8.9 112
Hansen Sawmill 8360 4.7 6.6 71 6.7 8.1 83
Middle Powder 7760 9.7 10.5 92 8.4 9.6 88
Powder River Pass 9480 7.2 10.6 68 9.6 12.0 80
Soldier Park 8680 3.3 7.2 46 6.4 8.8 73
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Basin Index (%) 78 86
TONGUE RIVER
Big Goose 8010 7.2 8.0 90 9.0 9.4 96
Bone Springs Div 9340 15.4 16.4 94 11.5 14.8 78
Burgess Junction 7900 11.0 10.2 108 11.9 11.2 106
Dome Lake 8890 10.6 11.2 95 10.0 12.0 83
Little Goose 8560 8.4 9.3 90 10.3 11.4 90
Sucker Creek 8840 11.7 11.4 103 13.9 13.0 107
Tie Creek 7050 7.3 5.0 146 11.6 10.3 113
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Basin Index (%) 100 95
BELLE FOURCHE
Blind Park 6900 3.9 7.0 56 9.1 10.4 88
Cole Canyon 5930 -M 5.2 * -M 8.6 *
North Rapid Creek 6150 2.7 6.6 41 7.4 8.4 88
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Basin Index (%) 49 88
CHEYENNE RIVER BASIN
Blind Park 6900 3.9 7.0 56 9.1 10.4 88
North Rapid Creek 6150 2.7 6.6 41 7.4 8.4 88
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Basin Index (%) 49 88
UPPER N. PLATTE
Arapaho Ridge 10960 20.1 21.0 96 19.8 21.1 94
Blackhall Mtn 9830 28.9 30.2 96 30.2 28.8 105
Cinnabar Park 9670 17.4 20.0 87 21.3 22.8 93
Columbine 9170 24.3 22.0 110 26.4 23.4 113
Divide Peak 8700 16.2 19.4 84 19.5 21.1 92
Joe Wright 10140 22.3 19.6 114 27.5 25.2 109
Laprele Creek 8370 8.0 9.4 85 9.6 11.4 84
Med Bow 10500 40.8 -M * 34.2 -M *
Never Summer 10300 19.9 19.7 101 16.4 16.4 100
North French Creek 10150 31.7 27.6 115 29.8 25.9 115
Old Battle 9850 28.9 29.7 97 28.6 32.4 88
Rawah 9100 10.3 10.6 97 14.0 14.8 95
Sage Creek Basin 7830 9.4 13.2 71 12.2 12.5 98
Sand Lake 10080 28.8 26.6 108 27.4 24.0 114
South Brush Creek 8480 10.0 11.9 84 11.7 13.4 87
Tower 10610 42.1 42.0 100 41.6 38.2 109
Webber Springs 9250 18.7 21.8 86 22.5 24.8 91
Whiskey Park 8950 27.3 25.4 107 28.4 26.6 107
Willow Creek Pass 9520 12.8 12.6 102 12.7 13.2 96
Zirkel 9320 24.6 27.6 89 30.3 30.0 101
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Basin Index (%) 98 101
SWEETWATER
Deer Park 9690 17.2 14.0 123 19.3 17.0 114
Larsen Creek 8880 7.7 10.0 77 12.4 13.2 94
South Pass 9040 14.6 14.5 101 16.7 15.0 111
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Basin Index (%) 103 107
LOWER N. PLATTE
Casper Mtn. 7940 8.3 13.0 64 10.6 13.3 80
Laprele Creek 8370 8.0 9.4 85 9.6 11.4 84
Reno Hill 8410 11.5 13.8 83 13.6 14.4 94
Windy Peak 7900 6.5 7.8 83 7.6 9.8 78
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Basin Index (%) 78 85
LARAMIE RIVER
Brooklyn Lake 10250 23.1 20.6 112 24.0 21.0 114
Cinnabar Park 9670 17.4 20.0 87 21.3 22.8 93
Crow Creek 8320 2.2 6.0 37 8.4 10.1 83
Deadman Hill 10240 17.7 15.8 112 18.0 17.0 106
Rawah 9100 10.3 10.6 97 14.0 14.8 95
Roach 9710 13.4 15.0 89 17.0 18.2 93
Windy Peak 7900 6.5 7.8 83 7.6 9.8 78
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Basin Index (%) 95 97
S. PLATTE
Crow Creek 8320 2.2 6.0 37 8.4 10.1 83
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Basin Index (%) 37 83
LITTLE SNAKE RIVER
Battle Mountain 7460 8.0 11.0 73 15.3 14.4 106
Divide Peak 8700 16.2 19.4 84 19.5 21.1 92
Elk River 8710 14.8 17.8 83 19.2 18.2 105
Elkhead Divide 8780 15.5 -M * 18.3 -M *
Little Snake River 8930 24.3 25.5 95 30.8 31.1 99
Old Battle 9850 28.9 29.7 97 28.6 32.4 88
Sage Creek Basin 7830 9.4 13.2 71 12.2 12.5 98
Sandstone RS 8150 11.8 12.6 94 14.5 17.2 84
Whiskey Park 8950 27.3 25.4 107 28.4 26.6 107
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Basin Index (%) 91 97
UPPER GREEN RIVER
Big Sandy Opening 9100 11.5 13.0 88 11.7 12.3 95
Blind Bull Sum 8880 26.6 23.5 113 18.7 17.5 107
East Rim Divide 8010 10.6 10.4 102 11.5 10.9 106
Elkhart Park G.S. 9410 12.8 12.2 105 12.5 12.4 101
Gros Ventre Summit 8760 13.0 12.8 102 13.2 12.0 110
Gunsight Pass 9830 13.7 12.6 109 13.6 13.4 101
Indian Creek 9400 26.3 23.3 113 22.3 19.4 115
Kendall R.S. 7790 13.4 11.4 118 14.4 13.0 111
Larsen Creek 8880 7.7 10.0 77 12.4 13.2 94
Loomis Park 8240 14.9 15.3 97 16.6 16.4 101
New Fork Lake 8380 10.0 10.3 97 -M 10.4 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 14.1 12.4 114 16.2 13.8 117
Spring Creek Divide 9020 26.7 24.2 110 25.4 23.1 110
Triple Peak 8520 28.9 22.4 129 27.4 24.4 112
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Basin Index (%) 108 107
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.5 8.9 118 13.5 12.2 111
Buck Pasture 9620 13.5 -M * 18.6 -M *
EF Blacks Fork GS 9360 9.6 11.3 85 12.5 10.8 116
Hams Fork 7870 11.1 10.9 102 12.7 10.8 118
Henrys Fork 10180 -M -M * 13.1 -M *
Hewinta 9510 8.6 9.8 88 14.6 12.8 114
Hickerson Park 9130 6.0 7.6 79 9.7 9.8 99
Hole-in-Rock 9170 5.8 7.0 83 9.8 9.5 103
Indian Creek 9400 26.3 23.3 113 22.3 19.4 115
Kelley R.S. 8240 17.3 14.6 118 18.0 15.6 115
Spirit Lk 10240 13.0 12.7 102 14.4 15.9 91
Steel Creek Park 10140 15.8 13.8 114 17.4 15.8 110
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Basin Index (%) 103 109
UPPER BEAR RIVER
Bear River RS 8510 6.8 9.6 71 12.8 11.6 110
Bug Lake 7980 18.4 18.6 99 19.4 17.6 110
Burts Miller Ranch 7900 4.4 5.5 80 11.9 7.1 168
Chalk Creek #1 9160 19.5 22.6 86 22.7 22.3 102
Giveout 6940 9.0 8.2 110 12.4 11.6 107
Hayden Fork 9160 13.0 14.6 89 21.0 19.8 106
Kelley R.S. 8240 17.3 14.6 118 18.0 15.6 115
Lily Lake 9130 11.9 12.2 98 14.9 14.6 102
Monte Cristo 8930 25.2 26.4 95 24.2 25.6 95
Salt River Summit 7630 15.5 13.4 116 13.7 15.5 88
Spring Creek Divide 9020 26.7 24.2 110 25.4 23.1 110
Trial Lake 9970 24.6 21.5 114 24.1 21.8 111
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Basin Index (%) 100 107
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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.
