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: MARCH 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 18.4 16.2 114 20.0 19.3 104
Blind Bull Sum 8880 26.1 23.3 112 18.2 17.4 105
Cottonwood Creek 7710 24.0 20.8 115 26.9 24.0 112
East Rim Divide 8010 10.6 10.5 101 11.0 10.6 104
Grand Targhee 9260 38.4 39.2 98 26.3 28.8 91
Granite Creek 6770 18.4 15.4 119 17.8 17.2 103
Grassy Lake 7330 31.2 31.1 100 33.7 32.8 103
Gros Ventre Summit 8760 12.8 12.0 107 12.6 11.6 109
Gunsight Pass 9830 13.4 12.4 108 13.1 13.1 100
Lewis Lake Divide 7880 31.9 29.4 109 34.1 31.2 109
Loomis Park 8240 15.3 15.0 102 16.0 16.2 99
Phillips Bench 8160 26.0 25.2 103 26.0 25.8 101
Salt River Summit 7630 15.4 12.9 119 13.4 14.8 91
Snake River Station 6900 19.7 16.6 119 21.4 20.8 103
Somsen Ranch 6830 14.2 11.9 119 15.9 15.2 105
Spring Creek Divide 9020 25.9 23.7 109 24.7 22.6 109
Thumb Divide 7970 -M 15.4 * -M 16.6 *
Togwotee Pass 9590 23.7 22.7 104 24.9 23.4 106
Triple Peak 8520 28.0 22.2 126 26.6 24.4 109
Two Ocean Plateau 9240 27.9 27.4 102 24.0 24.8 97
Willow Creek 8060 35.3 28.4 124 33.2 30.8 108
Younts Peak 8340 15.1 13.8 109 14.1 13.8 102
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Basin Index (%) 110 103
MADISON HEADWATERS IN WYOMING
Black Bear 8160 29.0 35.9 81 33.0 34.3 96
Canyon 7870 12.0 -M * 12.6 -M *
Madison Plateau 7710 21.9 21.2 103 23.5 22.6 104
West Yellowstone 6680 10.5 10.2 103 11.9 13.2 90
Whiskey Creek 6790 15.4 14.4 107 19.4 18.3 106
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Basin Index (%) 94 99
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.7 20.8 100 19.2 19.0 101
Canyon 7870 12.0 -M * 12.6 -M *
Evening Star 9040 25.1 24.1 104 26.8 26.6 101
Fisher Creek 9110 27.7 30.8 90 28.9 30.8 94
Monument Peak 8740 17.1 19.3 89 19.9 19.9 100
Northeast Entrance 7420 9.9 9.5 104 11.6 12.4 94
Parker Peak 9420 23.1 19.9 116 22.3 19.1 117
Sylvan Lake 8440 18.8 18.6 101 20.6 21.2 97
Thumb Divide 7970 -M 15.4 * -M 16.6 *
Two Ocean Plateau 9240 27.9 27.4 102 24.0 24.8 97
White Mill 8730 21.6 22.8 95 20.1 21.8 92
Wolverine 7650 11.9 11.0 108 14.4 11.7 123
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Basin Index (%) 100 100
WIND RIVER
Burroughs Creek 8760 11.7 -M * 15.8 -M *
Castle Creek 8410 6.3 6.8 93 7.7 8.0 96
Cold Springs 9640 7.4 6.9 107 8.2 8.2 100
Deer Park 9690 16.8 13.7 123 18.5 16.4 113
Hobbs Park 10080 14.0 13.0 108 14.1 11.4 124
Kirwin 9580 10.6 10.0 106 12.6 10.7 118
Little Warm 9370 10.5 9.9 106 12.8 11.3 113
South Pass 9040 14.4 13.8 104 16.1 14.2 113
St. Lawrence Alt 8610 4.8 -M * 8.6 -M *
Togwotee Pass 9590 23.7 22.7 104 24.9 23.4 106
Townsend Creek 8720 10.1 8.2 123 12.5 9.7 129
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Basin Index (%) 108 112
BIGHORN BASIN
Bald Mtn. 9360 20.1 17.0 118 16.5 15.0 110
Bear Trap Meadow 8200 5.4 6.0 90 5.8 7.4 78
Bone Springs Div 9340 15.2 15.2 100 11.2 14.1 79
Grave Springs 8560 8.0 7.8 103 9.3 8.7 107
Kirwin 9580 10.6 10.0 106 12.6 10.7 118
Marquette 8800 9.4 6.6 142 10.9 8.1 135
Middle Powder 7760 9.5 9.8 97 7.8 9.1 86
Owl Creek 8990 5.2 5.1 102 6.3 5.4 117
Powder River Pass 9480 7.0 10.4 67 9.1 11.6 78
Shell Creek 9570 11.8 14.2 83 10.7 12.9 83
Timber Creek 7910 5.4 4.1 132 7.0 6.9 101
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Basin Index (%) 101 98
SHOSHONE RIVER
Blackwater 9840 23.2 21.0 110 22.2 20.6 108
Evening Star 9040 25.1 24.1 104 26.8 26.6 101
Marquette 8800 9.4 6.6 142 10.9 8.1 135
Sylvan Lake 8440 18.8 18.6 101 20.6 21.2 97
Sylvan Road 7140 10.4 11.2 93 13.0 15.2 86
Younts Peak 8340 15.1 13.8 109 14.1 13.8 102
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Basin Index (%) 107 102
POWDER RIVER
Bear Trap Meadow 8200 5.4 6.0 90 5.8 7.4 78
Cloud Peak Reservoir 9830 10.4 13.6 76 10.6 12.0 88
Grave Springs 8560 8.0 7.8 103 9.3 8.7 107
Hansen Sawmill 8360 4.7 6.0 78 6.2 7.8 79
Middle Powder 7760 9.5 9.8 97 7.8 9.1 86
Powder River Pass 9480 7.0 10.4 67 9.1 11.6 78
Soldier Park 8680 3.3 6.4 52 5.8 8.2 71
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Basin Index (%) 80 84
TONGUE RIVER
Big Goose 8010 7.0 7.4 95 8.6 9.0 96
Bone Springs Div 9340 15.2 15.2 100 11.2 14.1 79
Burgess Junction 7900 10.6 9.8 108 11.6 10.6 109
Dome Lake 8890 10.2 10.6 96 6.9 11.4 61
Little Goose 8560 8.4 8.8 95 10.0 10.8 93
Sucker Creek 8840 11.6 11.1 105 13.7 12.4 110
Tie Creek 7050 7.7 4.6 167 11.4 9.5 120
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Basin Index (%) 105 94
BELLE FOURCHE
Blind Park 6900 4.3 6.8 63 8.5 10.0 85
Cole Canyon 5930 5.5 5.3 104 8.3 8.0 104
North Rapid Creek 6150 3.9 6.6 59 7.1 8.3 86
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Basin Index (%) 73 91
CHEYENNE RIVER BASIN
Blind Park 6900 4.3 6.8 63 8.5 10.0 85
North Rapid Creek 6150 3.9 6.6 59 7.1 8.3 86
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Basin Index (%) 61 85
UPPER N. PLATTE
Arapaho Ridge 10960 19.9 20.3 98 18.8 20.4 92
Blackhall Mtn 9830 27.2 28.6 95 28.8 27.6 104
Cinnabar Park 9670 16.6 19.4 86 20.0 22.0 91
Columbine 9170 25.0 21.5 116 25.6 22.4 114
Divide Peak 8700 16.1 18.0 89 18.4 20.4 90
Joe Wright 10140 21.9 19.2 114 26.0 24.2 107
Laprele Creek 8370 7.8 9.1 86 9.1 10.8 84
Med Bow 10500 37.0 -M * 31.9 -M *
Never Summer 10300 18.4 18.9 97 15.1 16.0 94
North French Creek 10150 29.5 26.2 113 27.6 24.3 114
Old Battle 9850 26.8 28.2 95 26.7 31.1 86
Rawah 9100 10.0 10.2 98 13.1 14.2 92
Sage Creek Basin 7830 10.2 12.3 83 11.4 12.0 95
Sand Lake 10080 26.7 24.8 108 25.4 22.8 111
South Brush Creek 8480 10.1 11.4 89 10.6 12.6 84
Tower 10610 40.9 40.2 102 38.1 37.2 102
Webber Springs 9250 17.8 20.8 86 21.1 23.8 89
Whiskey Park 8950 26.0 24.9 104 27.0 25.8 105
Willow Creek Pass 9520 12.0 12.2 98 11.9 12.8 93
Zirkel 9320 25.0 27.0 93 29.2 29.2 100
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Basin Index (%) 99 99
SWEETWATER
Deer Park 9690 16.8 13.7 123 18.5 16.4 113
Larsen Creek 8880 8.0 10.6 75 11.9 12.4 96
South Pass 9040 14.4 13.8 104 16.1 14.2 113
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Basin Index (%) 103 108
LOWER N. PLATTE
Casper Mtn. 7940 8.7 12.4 70 10.2 12.6 81
Laprele Creek 8370 7.8 9.1 86 9.1 10.8 84
Reno Hill 8410 11.2 12.8 88 13.1 12.7 103
Windy Peak 7900 6.3 7.8 81 7.0 9.1 77
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Basin Index (%) 81 87
LARAMIE RIVER
Brooklyn Lake 10250 22.4 20.0 112 22.5 20.3 111
Cinnabar Park 9670 16.6 19.4 86 20.0 22.0 91
Crow Creek 8320 2.6 5.9 44 7.2 9.9 73
Deadman Hill 10240 17.2 15.4 112 17.2 16.2 106
Rawah 9100 10.0 10.2 98 13.1 14.2 92
Roach 9710 12.8 14.4 89 15.9 17.2 92
Windy Peak 7900 6.3 7.8 81 7.0 9.1 77
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Basin Index (%) 94 94
S. PLATTE
Crow Creek 8320 2.6 5.9 44 7.2 9.9 73
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Basin Index (%) 44 73
LITTLE SNAKE RIVER
Battle Mountain 7460 8.5 11.0 77 14.3 14.0 102
Divide Peak 8700 16.1 18.0 89 18.4 20.4 90
Elk River 8710 15.5 17.4 89 18.2 17.6 103
Elkhead Divide 8780 15.1 -M * 17.3 -M *
Little Snake River 8930 23.8 24.9 96 29.3 30.1 97
Old Battle 9850 26.8 28.2 95 26.7 31.1 86
Sage Creek Basin 7830 10.2 12.3 83 11.4 12.0 95
Sandstone RS 8150 12.3 12.2 101 13.5 16.7 81
Whiskey Park 8950 26.0 24.9 104 27.0 25.8 105
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Basin Index (%) 93 95
UPPER GREEN RIVER
Big Sandy Opening 9100 10.9 12.6 87 11.0 12.0 92
Blind Bull Sum 8880 26.1 23.3 112 18.2 17.4 105
East Rim Divide 8010 10.6 10.5 101 11.0 10.6 104
Elkhart Park G.S. 9410 12.5 11.9 105 11.9 12.0 99
Gros Ventre Summit 8760 12.8 12.0 107 12.6 11.6 109
Gunsight Pass 9830 13.4 12.4 108 13.1 13.1 100
Indian Creek 9400 25.2 22.2 114 21.2 18.2 116
Kendall R.S. 7790 13.7 11.2 122 13.9 12.7 109
Larsen Creek 8880 8.0 10.6 75 11.9 12.4 96
Loomis Park 8240 15.3 15.0 102 16.0 16.2 99
New Fork Lake 8380 10.2 10.1 101 -M 10.0 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.2 12.3 107 15.7 13.2 119
Spring Creek Divide 9020 25.9 23.7 109 24.7 22.6 109
Triple Peak 8520 28.0 22.2 126 26.6 24.4 109
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Basin Index (%) 108 106
LOWER GREEN RIVER
Blacks Fork Jct 8880 9.9 8.0 124 12.6 11.4 111
Buck Pasture 9620 13.1 -M * 17.6 -M *
EF Blacks Fork GS 9360 8.9 11.0 81 11.6 10.0 116
Hams Fork 7870 11.5 10.6 108 12.2 10.4 117
Henrys Fork 10180 -M -M * 12.0 -M *
Hewinta 9510 7.9 9.6 82 13.7 12.2 112
Hickerson Park 9130 5.5 7.2 76 8.7 9.3 94
Hole-in-Rock 9170 5.1 7.0 73 8.9 9.0 99
Indian Creek 9400 25.2 22.2 114 21.2 18.2 116
Kelley R.S. 8240 16.5 14.2 116 17.0 15.2 112
Spirit Lk 10240 12.1 11.8 103 13.2 15.6 85
Steel Creek Park 10140 14.9 13.6 110 16.3 14.8 110
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Basin Index (%) 102 107
UPPER BEAR RIVER
Bear River RS 8510 7.1 8.5 84 12.1 11.1 109
Bug Lake 7980 18.0 17.7 102 18.4 16.8 110
Burts Miller Ranch 7900 4.9 5.6 88 10.9 7.1 154
Chalk Creek #1 9160 18.3 21.4 86 21.5 21.2 101
Giveout 6940 9.4 7.9 119 11.9 11.2 106
Hayden Fork 9160 12.1 14.0 86 19.8 18.8 105
Kelley R.S. 8240 16.5 14.2 116 17.0 15.2 112
Lily Lake 9130 11.5 11.9 97 14.0 14.0 100
Monte Cristo 8930 24.3 25.2 96 23.4 24.1 97
Salt River Summit 7630 15.4 12.9 119 13.4 14.8 91
Spring Creek Divide 9020 25.9 23.7 109 24.7 22.6 109
Trial Lake 9970 23.8 20.8 114 23.2 20.8 112
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Basin Index (%) 102 106
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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.
