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 SUNDAY: MARCH 23 , 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 16.0 115 19.7 18.9 104
Blind Bull Sum 8880 25.2 22.4 112 18.1 16.8 108
Cottonwood Creek 7710 24.2 20.4 119 26.7 23.0 116
East Rim Divide 8010 10.9 10.2 107 10.8 10.3 105
Grand Targhee 9260 37.2 37.8 98 26.0 28.6 91
Granite Creek 6770 18.3 15.7 117 17.6 17.0 104
Grassy Lake 7330 31.0 30.5 102 32.3 32.5 99
Gros Ventre Summit 8760 12.5 11.5 109 12.4 11.2 111
Gunsight Pass 9830 13.8 12.0 115 12.9 12.7 102
Lewis Lake Divide 7880 31.6 29.1 109 31.8 30.0 106
Loomis Park 8240 15.4 14.0 110 15.9 15.6 102
Phillips Bench 8160 25.8 23.8 108 24.6 24.8 99
Salt River Summit 7630 15.7 12.4 127 13.2 14.1 94
Snake River Station 6900 20.2 16.7 121 20.4 20.0 102
Somsen Ranch 6830 14.9 11.6 128 15.9 14.9 107
Spring Creek Divide 9020 25.2 22.6 112 23.8 22.0 108
Thumb Divide 7970 14.8 14.8 100 13.7 15.6 88
Togwotee Pass 9590 23.7 21.6 110 24.6 22.6 109
Triple Peak 8520 26.9 21.9 123 26.2 23.6 111
Two Ocean Plateau 9240 27.5 26.6 103 22.2 23.6 94
Willow Creek 8060 33.4 27.2 123 33.0 30.2 109
Younts Peak 8340 14.9 13.7 109 13.9 13.4 104
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Basin Index (%) 111 103
MADISON HEADWATERS IN WYOMING
Black Bear 8160 33.4 36.2 92 32.6 33.4 98
Canyon 7870 11.9 -M * 12.5 -M *
Madison Plateau 7710 21.3 20.8 102 23.3 22.4 104
West Yellowstone 6680 10.8 10.2 106 12.0 13.1 92
Whiskey Creek 6790 15.3 14.4 106 19.2 18.0 107
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Basin Index (%) 99 100
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.4 20.2 96 18.1 18.5 98
Canyon 7870 11.9 -M * 12.5 -M *
Evening Star 9040 24.0 23.7 101 25.0 26.2 95
Fisher Creek 9110 27.1 30.0 90 28.2 29.8 95
Monument Peak 8740 16.9 19.0 89 19.5 19.4 101
Northeast Entrance 7420 10.0 9.8 102 11.5 12.0 96
Parker Peak 9420 22.4 19.6 114 21.1 18.6 113
Sylvan Lake 8440 18.3 18.5 99 20.1 20.9 96
Thumb Divide 7970 14.8 14.8 100 13.7 15.6 88
Two Ocean Plateau 9240 27.5 26.6 103 22.2 23.6 94
White Mill 8730 21.1 21.6 98 19.5 21.1 92
Wolverine 7650 12.5 10.7 117 14.2 11.4 125
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Basin Index (%) 100 98
WIND RIVER
Burroughs Creek 8760 12.0 -M * 15.5 -M *
Castle Creek 8410 6.8 7.0 97 7.6 7.8 97
Cold Springs 9640 7.9 6.6 120 8.3 8.1 102
Deer Park 9690 17.1 12.8 134 18.4 16.3 113
Hobbs Park 10080 14.0 12.4 113 14.0 11.1 126
Kirwin 9580 10.5 9.5 111 12.4 10.4 119
Little Warm 9370 10.7 9.2 116 12.5 11.0 114
South Pass 9040 14.6 13.5 108 16.0 13.8 116
St. Lawrence Alt 8610 5.5 -M * 8.6 -M *
Togwotee Pass 9590 23.7 21.6 110 24.6 22.6 109
Townsend Creek 8720 10.2 8.1 126 12.4 9.2 135
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Basin Index (%) 115 114
BIGHORN BASIN
Bald Mtn. 9360 19.1 16.5 116 15.7 14.7 107
Bear Trap Meadow 8200 5.8 5.9 98 5.5 7.2 76
Bone Springs Div 9340 14.1 14.8 95 10.6 13.6 78
Grave Springs 8560 8.1 7.8 104 9.2 8.5 108
Kirwin 9580 10.5 9.5 111 12.4 10.4 119
Marquette 8800 9.8 6.4 153 10.7 7.8 137
Middle Powder 7760 9.8 9.6 102 7.7 9.0 86
Owl Creek 8990 5.6 5.0 112 6.0 5.2 115
Powder River Pass 9480 7.1 9.9 72 8.9 11.4 78
Shell Creek 9570 11.2 13.8 81 10.2 12.2 84
Timber Creek 7910 5.9 4.0 148 6.9 6.6 105
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Basin Index (%) 104 97
SHOSHONE RIVER
Blackwater 9840 22.6 20.7 109 21.1 20.0 106
Evening Star 9040 24.0 23.7 101 25.0 26.2 95
Marquette 8800 9.8 6.4 153 10.7 7.8 137
Sylvan Lake 8440 18.3 18.5 99 20.1 20.9 96
Sylvan Road 7140 10.7 11.3 95 12.4 15.1 82
Younts Peak 8340 14.9 13.7 109 13.9 13.4 104
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Basin Index (%) 106 100
POWDER RIVER
Bear Trap Meadow 8200 5.8 5.9 98 5.5 7.2 76
Cloud Peak Reservoir 9830 10.3 13.4 77 10.5 11.8 89
Grave Springs 8560 8.1 7.8 104 9.2 8.5 108
Hansen Sawmill 8360 4.6 6.0 77 6.2 7.7 81
Middle Powder 7760 9.8 9.6 102 7.7 9.0 86
Powder River Pass 9480 7.1 9.9 72 8.9 11.4 78
Soldier Park 8680 3.3 6.0 55 5.8 8.0 72
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Basin Index (%) 84 85
TONGUE RIVER
Big Goose 8010 7.2 7.4 97 8.6 8.8 98
Bone Springs Div 9340 14.1 14.8 95 10.6 13.6 78
Burgess Junction 7900 10.6 9.6 110 11.4 10.4 110
Dome Lake 8890 9.3 10.4 89 6.8 11.2 61
Little Goose 8560 8.6 8.3 104 9.8 10.4 94
Sucker Creek 8840 11.5 11.2 103 13.2 12.4 106
Tie Creek 7050 8.4 4.6 183 11.1 9.3 119
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Basin Index (%) 105 94
BELLE FOURCHE
Blind Park 6900 5.0 7.0 71 8.1 9.9 82
Cole Canyon 5930 6.4 5.1 125 8.1 7.8 104
North Rapid Creek 6150 4.0 6.6 61 6.6 8.1 81
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Basin Index (%) 82 88
CHEYENNE RIVER BASIN
Blind Park 6900 5.0 7.0 71 8.1 9.9 82
North Rapid Creek 6150 4.0 6.6 61 6.6 8.1 81
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Basin Index (%) 66 82
UPPER N. PLATTE
Arapaho Ridge 10960 19.5 19.6 99 18.8 19.2 98
Blackhall Mtn 9830 27.8 27.3 102 28.6 26.5 108
Cinnabar Park 9670 16.8 18.3 92 19.8 21.0 94
Columbine 9170 24.8 21.3 116 25.4 21.8 117
Divide Peak 8700 16.4 17.7 93 18.4 19.4 95
Joe Wright 10140 21.2 18.5 115 25.9 23.6 110
Laprele Creek 8370 8.1 8.8 92 9.0 10.4 87
Med Bow 10500 37.3 -M * 30.8 -M *
Never Summer 10300 18.4 18.0 102 15.1 14.8 102
North French Creek 10150 28.6 25.3 113 27.1 23.6 115
Old Battle 9850 26.7 26.8 100 26.5 30.2 88
Rawah 9100 10.6 9.8 108 13.2 14.0 94
Sage Creek Basin 7830 11.5 11.7 98 11.4 11.6 98
Sand Lake 10080 26.5 24.0 110 25.2 22.1 114
South Brush Creek 8480 10.7 10.8 99 10.6 12.4 85
Tower 10610 40.7 38.8 105 36.5 36.2 101
Webber Springs 9250 18.4 20.3 91 20.9 23.0 91
Whiskey Park 8950 25.6 24.8 103 26.8 25.0 107
Willow Creek Pass 9520 11.9 12.0 99 11.9 12.2 98
Zirkel 9320 24.7 26.0 95 28.9 27.8 104
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Basin Index (%) 102 101
SWEETWATER
Deer Park 9690 17.1 12.8 134 18.4 16.3 113
Larsen Creek 8880 7.8 10.6 74 11.7 11.9 98
South Pass 9040 14.6 13.5 108 16.0 13.8 116
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Basin Index (%) 107 110
LOWER N. PLATTE
Casper Mtn. 7940 9.4 11.8 80 10.0 11.7 85
Laprele Creek 8370 8.1 8.8 92 9.0 10.4 87
Reno Hill 8410 11.2 12.2 92 13.0 12.4 105
Windy Peak 7900 6.4 7.0 91 6.8 8.6 79
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Basin Index (%) 88 90
LARAMIE RIVER
Brooklyn Lake 10250 22.2 19.0 117 22.3 19.2 116
Cinnabar Park 9670 16.8 18.3 92 19.8 21.0 94
Crow Creek 8320 3.1 6.5 48 7.1 9.3 76
Deadman Hill 10240 16.7 15.2 110 17.1 15.7 109
Rawah 9100 10.6 9.8 108 13.2 14.0 94
Roach 9710 12.8 14.2 90 15.6 16.6 94
Windy Peak 7900 6.4 7.0 91 6.8 8.6 79
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Basin Index (%) 98 98
S. PLATTE
Crow Creek 8320 3.1 6.5 48 7.1 9.3 76
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Basin Index (%) 48 76
LITTLE SNAKE RIVER
Battle Mountain 7460 10.7 11.1 96 14.3 13.6 105
Divide Peak 8700 16.4 17.7 93 18.4 19.4 95
Elk River 8710 15.4 16.5 93 18.1 17.1 106
Elkhead Divide 8780 15.6 -M * 17.2 -M *
Little Snake River 8930 24.3 24.6 99 29.3 28.6 102
Old Battle 9850 26.7 26.8 100 26.5 30.2 88
Sage Creek Basin 7830 11.5 11.7 98 11.4 11.6 98
Sandstone RS 8150 13.2 11.7 113 13.5 16.5 82
Whiskey Park 8950 25.6 24.8 103 26.8 25.0 107
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Basin Index (%) 99 98
UPPER GREEN RIVER
Big Sandy Opening 9100 10.8 12.0 90 10.9 11.8 92
Blind Bull Sum 8880 25.2 22.4 112 18.1 16.8 108
East Rim Divide 8010 10.9 10.2 107 10.8 10.3 105
Elkhart Park G.S. 9410 12.1 11.3 107 11.8 11.6 102
Gros Ventre Summit 8760 12.5 11.5 109 12.4 11.2 111
Gunsight Pass 9830 13.8 12.0 115 12.9 12.7 102
Indian Creek 9400 24.9 20.6 121 21.1 17.9 118
Kendall R.S. 7790 14.2 11.4 125 13.8 12.4 111
Larsen Creek 8880 7.8 10.6 74 11.7 11.9 98
Loomis Park 8240 15.4 14.0 110 15.9 15.6 102
New Fork Lake 8380 10.3 9.7 106 -M 9.8 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 14.1 12.2 116 15.5 12.8 121
Spring Creek Divide 9020 25.2 22.6 112 23.8 22.0 108
Triple Peak 8520 26.9 21.9 123 26.2 23.6 111
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Basin Index (%) 111 108
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.6 7.8 136 12.7 10.9 117
Buck Pasture 9620 13.6 -M * 17.6 -M *
EF Blacks Fork GS 9360 9.7 10.8 90 11.6 10.0 116
Hams Fork 7870 11.9 10.5 113 12.2 9.7 126
Henrys Fork 10180 -M -M * 12.2 -M *
Hewinta 9510 10.3 9.5 108 13.8 12.0 115
Hickerson Park 9130 7.0 7.4 95 8.8 8.9 99
Hole-in-Rock 9170 6.3 6.9 91 8.9 8.8 101
Indian Creek 9400 24.9 20.6 121 21.1 17.9 118
Kelley R.S. 8240 16.7 13.5 124 17.0 14.6 116
Spirit Lk 10240 12.3 11.3 109 13.2 15.2 87
Steel Creek Park 10140 15.2 13.3 114 16.4 14.0 117
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Basin Index (%) 112 111
UPPER BEAR RIVER
Bear River RS 8510 9.2 8.3 111 12.2 10.7 114
Bug Lake 7980 18.6 17.1 109 18.4 16.0 115
Burts Miller Ranch 7900 6.6 5.4 122 11.0 6.8 162
Chalk Creek #1 9160 18.9 20.9 90 21.4 20.8 103
Giveout 6940 9.5 7.6 125 11.7 10.7 109
Hayden Fork 9160 13.4 13.4 100 19.9 18.3 109
Kelley R.S. 8240 16.7 13.5 124 17.0 14.6 116
Lily Lake 9130 12.2 11.2 109 14.1 13.8 102
Monte Cristo 8930 25.0 24.6 102 23.3 22.7 103
Salt River Summit 7630 15.7 12.4 127 13.2 14.1 94
Spring Creek Divide 9020 25.2 22.6 112 23.8 22.0 108
Trial Lake 9970 24.0 20.1 119 23.2 20.0 116
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Basin Index (%) 110 110
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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.
