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 MONDAY: MARCH 31 , 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 17.8 16.2 110 20.4 19.6 104
Blind Bull Sum 8880 26.1 23.6 111 18.3 17.5 105
Cottonwood Creek 7710 24.0 21.4 112 27.3 24.4 112
East Rim Divide 8010 10.3 10.3 100 11.3 10.9 104
Grand Targhee 9260 39.1 40.1 98 29.7 29.8 100
Granite Creek 6770 17.6 15.6 113 17.8 17.2 103
Grassy Lake 7330 31.1 31.6 98 34.0 33.4 102
Gros Ventre Summit 8760 12.7 12.6 101 12.9 11.8 109
Gunsight Pass 9830 13.5 12.6 107 13.3 13.2 101
Lewis Lake Divide 7880 31.7 30.0 106 34.3 31.8 108
Loomis Park 8240 14.4 15.3 94 16.2 16.4 99
Phillips Bench 8160 25.9 25.9 100 26.3 26.1 101
Salt River Summit 7630 15.0 13.4 112 13.4 15.3 88
Snake River Station 6900 19.0 16.8 113 21.5 21.3 101
Somsen Ranch 6830 13.3 11.4 117 16.2 16.3 99
Spring Creek Divide 9020 26.0 24.2 107 24.9 23.1 108
Thumb Divide 7970 14.4 15.8 91 14.0 17.0 82
Togwotee Pass 9590 23.9 22.9 104 25.3 24.0 105
Triple Peak 8520 28.4 22.4 127 26.8 24.4 110
Two Ocean Plateau 9240 28.3 28.0 101 24.5 25.3 97
Willow Creek 8060 34.3 29.0 118 33.7 31.8 106
Younts Peak 8340 15.0 14.2 106 14.4 14.3 101
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Basin Index (%) 106 102
MADISON HEADWATERS IN WYOMING
Black Bear 8160 32.2 36.9 87 33.2 35.1 95
Canyon 7870 12.0 -M * 12.8 -M *
Madison Plateau 7710 21.4 21.7 99 23.6 23.5 100
West Yellowstone 6680 10.0 10.2 98 11.9 13.6 88
Whiskey Creek 6790 14.8 15.0 99 19.6 19.2 102
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Basin Index (%) 94 97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 21.1 21.1 100 19.7 19.4 102
Canyon 7870 12.0 -M * 12.8 -M *
Evening Star 9040 25.2 24.2 104 27.0 26.8 101
Fisher Creek 9110 28.2 31.4 90 29.4 31.6 93
Monument Peak 8740 17.4 19.7 88 20.2 20.6 98
Northeast Entrance 7420 9.3 9.4 99 12.0 12.4 97
Parker Peak 9420 23.7 20.2 117 22.6 19.2 118
Sylvan Lake 8440 18.0 19.1 94 21.0 22.0 95
Thumb Divide 7970 14.4 15.8 91 14.0 17.0 82
Two Ocean Plateau 9240 28.3 28.0 101 24.5 25.3 97
White Mill 8730 22.2 23.0 97 20.7 21.8 95
Wolverine 7650 11.8 10.9 108 14.5 11.9 122
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Basin Index (%) 99 99
WIND RIVER
Burroughs Creek 8760 12.0 -M * 16.3 -M *
Castle Creek 8410 6.2 6.6 94 8.2 8.2 100
Cold Springs 9640 7.2 7.2 100 8.7 8.8 99
Deer Park 9690 16.9 14.0 121 18.9 17.0 111
Hobbs Park 10080 14.4 13.7 105 14.6 12.6 116
Kirwin 9580 11.5 10.4 111 13.6 11.4 119
Little Warm 9370 10.6 10.2 104 13.0 11.5 113
South Pass 9040 14.4 14.4 100 16.3 15.0 109
St. Lawrence Alt 8610 5.0 -M * 9.3 -M *
Togwotee Pass 9590 23.9 22.9 104 25.3 24.0 105
Townsend Creek 8720 10.2 8.9 115 12.9 10.6 122
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Basin Index (%) 106 110
BIGHORN BASIN
Bald Mtn. 9360 20.4 18.6 110 16.7 15.4 108
Bear Trap Meadow 8200 5.2 6.0 87 6.2 7.8 79
Bone Springs Div 9340 15.3 16.2 94 11.5 14.8 78
Grave Springs 8560 8.0 8.0 100 9.8 8.9 110
Kirwin 9580 11.5 10.4 111 13.6 11.4 119
Marquette 8800 9.8 6.8 144 11.4 8.5 134
Middle Powder 7760 9.4 10.4 90 8.2 9.4 87
Owl Creek 8990 5.7 5.4 106 7.0 5.8 121
Powder River Pass 9480 7.1 10.6 67 9.6 11.9 81
Shell Creek 9570 12.5 14.8 84 11.4 13.2 86
Timber Creek 7910 6.2 4.4 141 7.6 7.6 100
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Basin Index (%) 100 99
SHOSHONE RIVER
Blackwater 9840 23.7 21.8 109 22.3 20.8 107
Evening Star 9040 25.2 24.2 104 27.0 26.8 101
Marquette 8800 9.8 6.8 144 11.4 8.5 134
Sylvan Lake 8440 18.0 19.1 94 21.0 22.0 95
Sylvan Road 7140 8.6 10.9 79 13.0 15.6 83
Younts Peak 8340 15.0 14.2 106 14.4 14.3 101
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Basin Index (%) 103 101
POWDER RIVER
Bear Trap Meadow 8200 5.2 6.0 87 6.2 7.8 79
Cloud Peak Reservoir 9830 10.6 14.0 76 11.1 12.6 88
Grave Springs 8560 8.0 8.0 100 9.8 8.9 110
Hansen Sawmill 8360 4.6 6.6 70 6.7 8.0 84
Middle Powder 7760 9.4 10.4 90 8.2 9.4 87
Powder River Pass 9480 7.1 10.6 67 9.6 11.9 81
Soldier Park 8680 3.3 7.1 46 6.4 8.6 74
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Basin Index (%) 77 86
TONGUE RIVER
Big Goose 8010 7.1 8.2 87 9.0 9.4 96
Bone Springs Div 9340 15.3 16.2 94 11.5 14.8 78
Burgess Junction 7900 10.8 9.8 110 11.9 10.9 109
Dome Lake 8890 10.4 11.2 93 9.6 12.0 80
Little Goose 8560 8.4 9.2 91 10.3 11.4 90
Sucker Creek 8840 11.6 11.6 100 13.7 12.9 106
Tie Creek 7050 7.2 5.0 144 11.5 10.2 113
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Basin Index (%) 99 95
BELLE FOURCHE
Blind Park 6900 3.8 7.0 54 9.1 10.4 88
Cole Canyon 5930 4.4 5.1 86 8.7 8.5 102
North Rapid Creek 6150 2.7 6.6 41 7.3 8.4 87
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Basin Index (%) 58 92
CHEYENNE RIVER BASIN
Blind Park 6900 3.8 7.0 54 9.1 10.4 88
North Rapid Creek 6150 2.7 6.6 41 7.3 8.4 87
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Basin Index (%) 48 87
UPPER N. PLATTE
Arapaho Ridge 10960 20.0 20.7 97 19.7 20.9 94
Blackhall Mtn 9830 28.3 30.0 94 29.8 28.7 104
Cinnabar Park 9670 16.9 19.9 85 21.0 22.8 92
Columbine 9170 24.0 21.8 110 26.4 23.2 114
Divide Peak 8700 15.8 19.4 81 19.3 20.8 93
Joe Wright 10140 22.1 19.5 113 27.5 25.0 110
Laprele Creek 8370 7.8 9.2 85 9.4 11.2 84
Med Bow 10500 40.2 -M * 33.6 -M *
Never Summer 10300 19.8 19.6 101 16.4 16.4 100
North French Creek 10150 30.7 27.3 112 29.3 25.7 114
Old Battle 9850 28.4 29.0 98 28.2 31.6 89
Rawah 9100 10.3 10.6 97 14.0 14.7 95
Sage Creek Basin 7830 9.3 13.0 72 12.1 12.4 98
Sand Lake 10080 28.0 26.4 106 26.8 23.8 113
South Brush Creek 8480 9.7 11.8 82 11.4 13.2 86
Tower 10610 41.8 42.0 100 41.5 38.2 109
Webber Springs 9250 18.3 21.6 85 22.2 24.5 91
Whiskey Park 8950 26.4 25.4 104 28.1 26.4 106
Willow Creek Pass 9520 12.7 12.6 101 12.7 13.1 97
Zirkel 9320 24.0 27.6 87 30.0 30.0 100
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Basin Index (%) 97 101
SWEETWATER
Deer Park 9690 16.9 14.0 121 18.9 17.0 111
Larsen Creek 8880 7.4 10.4 71 11.9 13.0 92
South Pass 9040 14.4 14.4 100 16.3 15.0 109
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Basin Index (%) 100 105
LOWER N. PLATTE
Casper Mtn. 7940 8.2 12.9 64 10.4 13.2 79
Laprele Creek 8370 7.8 9.2 85 9.4 11.2 84
Reno Hill 8410 11.2 13.8 81 13.3 14.4 92
Windy Peak 7900 6.2 7.8 79 7.4 9.8 76
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Basin Index (%) 76 83
LARAMIE RIVER
Brooklyn Lake 10250 22.6 20.6 110 23.5 20.9 112
Cinnabar Park 9670 16.9 19.9 85 21.0 22.8 92
Crow Creek 8320 2.1 5.9 36 8.2 10.1 81
Deadman Hill 10240 17.3 15.7 110 17.9 16.9 106
Rawah 9100 10.3 10.6 97 14.0 14.7 95
Roach 9710 13.2 15.0 88 16.8 18.2 92
Windy Peak 7900 6.2 7.8 79 7.4 9.8 76
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Basin Index (%) 93 96
S. PLATTE
Crow Creek 8320 2.1 5.9 36 8.2 10.1 81
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Basin Index (%) 36 81
LITTLE SNAKE RIVER
Battle Mountain 7460 7.9 11.0 72 15.1 14.4 105
Divide Peak 8700 15.8 19.4 81 19.3 20.8 93
Elk River 8710 14.5 17.6 82 19.0 18.1 105
Elkhead Divide 8780 15.1 -M * 18.1 -M *
Little Snake River 8930 23.9 25.4 94 30.5 31.0 98
Old Battle 9850 28.4 29.0 98 28.2 31.6 89
Sage Creek Basin 7830 9.3 13.0 72 12.1 12.4 98
Sandstone RS 8150 11.5 12.4 93 14.4 17.2 84
Whiskey Park 8950 26.4 25.4 104 28.1 26.4 106
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Basin Index (%) 90 97
UPPER GREEN RIVER
Big Sandy Opening 9100 10.9 12.9 84 11.1 12.2 91
Blind Bull Sum 8880 26.1 23.6 111 18.3 17.5 105
East Rim Divide 8010 10.3 10.3 100 11.3 10.9 104
Elkhart Park G.S. 9410 12.4 12.2 102 12.1 12.4 98
Gros Ventre Summit 8760 12.7 12.6 101 12.9 11.8 109
Gunsight Pass 9830 13.5 12.6 107 13.3 13.2 101
Indian Creek 9400 25.2 22.9 110 21.5 19.3 111
Kendall R.S. 7790 13.0 11.3 115 14.1 13.0 108
Larsen Creek 8880 7.4 10.4 71 11.9 13.0 92
Loomis Park 8240 14.4 15.3 94 16.2 16.4 99
New Fork Lake 8380 9.7 10.4 93 -M 10.4 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.5 12.4 109 15.8 13.6 116
Spring Creek Divide 9020 26.0 24.2 107 24.9 23.1 108
Triple Peak 8520 28.4 22.4 127 26.8 24.4 110
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Basin Index (%) 105 105
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.0 8.8 114 13.0 12.0 108
Buck Pasture 9620 12.9 -M * 18.0 -M *
EF Blacks Fork GS 9360 9.0 11.3 80 12.0 10.4 115
Hams Fork 7870 10.7 10.8 99 12.4 10.8 115
Henrys Fork 10180 -M -M * 12.6 -M *
Hewinta 9510 8.1 10.2 79 14.1 12.6 112
Hickerson Park 9130 5.5 7.5 73 9.2 9.7 95
Hole-in-Rock 9170 5.2 7.0 74 9.4 9.4 100
Indian Creek 9400 25.2 22.9 110 21.5 19.3 111
Kelley R.S. 8240 16.6 14.5 114 17.3 15.6 111
Spirit Lk 10240 12.4 11.7 106 13.9 15.9 87
Steel Creek Park 10140 15.3 13.8 111 16.8 15.4 109
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Basin Index (%) 100 106
UPPER BEAR RIVER
Bear River RS 8510 6.5 9.4 69 12.3 11.4 108
Bug Lake 7980 17.9 18.3 98 18.8 17.2 109
Burts Miller Ranch 7900 4.0 5.4 74 11.3 7.1 159
Chalk Creek #1 9160 -M 22.5 * -M 22.2 *
Giveout 6940 8.6 8.0 108 12.0 11.6 103
Hayden Fork 9160 12.0 14.4 83 20.3 19.6 104
Kelley R.S. 8240 16.6 14.5 114 17.3 15.6 111
Lily Lake 9130 11.4 12.2 93 14.4 14.6 99
Monte Cristo 8930 24.3 25.8 94 23.7 25.3 94
Salt River Summit 7630 15.0 13.4 112 13.4 15.3 88
Spring Creek Divide 9020 26.0 24.2 107 24.9 23.1 108
Trial Lake 9970 23.7 21.4 111 23.7 21.4 111
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Basin Index (%) 99 105
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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.
