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 FRIDAY: MARCH 21 , 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 18.0 16.2 111 19.0 18.6 102
Blind Bull Sum 8880 24.7 22.3 111 17.7 16.6 107
Cottonwood Creek 7710 23.7 19.8 120 26.1 22.6 115
East Rim Divide 8010 10.7 10.0 107 10.6 10.3 103
Grand Targhee 9260 36.3 37.2 98 26.0 28.0 93
Granite Creek 6770 17.8 15.8 113 17.0 16.9 101
Grassy Lake 7330 30.2 29.8 101 32.2 32.0 101
Gros Ventre Summit 8760 12.4 11.4 109 12.1 11.1 109
Gunsight Pass 9830 13.3 12.1 110 12.6 12.7 99
Lewis Lake Divide 7880 30.4 29.0 105 31.8 29.6 107
Loomis Park 8240 15.1 14.2 106 15.4 15.6 99
Phillips Bench 8160 24.7 23.6 105 24.0 24.0 100
Salt River Summit 7630 15.4 12.3 125 12.9 13.8 93
Snake River Station 6900 19.8 16.5 120 20.3 19.8 103
Somsen Ranch 6830 14.5 11.5 126 15.6 14.7 106
Spring Creek Divide 9020 24.2 22.6 107 23.3 22.0 106
Thumb Divide 7970 14.4 14.8 97 13.1 15.5 85
Togwotee Pass 9590 22.8 21.6 106 23.9 22.6 106
Triple Peak 8520 26.0 21.8 119 25.4 23.2 109
Two Ocean Plateau 9240 26.9 26.5 102 22.1 23.5 94
Willow Creek 8060 32.8 27.0 121 -M 30.0 *
Younts Peak 8340 14.4 13.6 106 13.5 13.2 102
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Basin Index (%) 109 102
MADISON HEADWATERS IN WYOMING
Black Bear 8160 32.5 36.2 90 31.7 33.4 95
Canyon 7870 11.8 -M * 12.3 -M *
Madison Plateau 7710 20.5 20.6 100 22.6 22.4 101
West Yellowstone 6680 10.6 10.2 104 11.6 13.0 89
Whiskey Creek 6790 14.8 14.4 103 18.9 17.6 107
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Basin Index (%) 96 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.1 20.0 96 17.8 18.3 97
Canyon 7870 11.8 -M * 12.3 -M *
Evening Star 9040 23.3 23.7 98 24.5 25.8 95
Fisher Creek 9110 26.4 29.8 89 27.5 29.5 93
Monument Peak 8740 16.3 18.8 87 18.9 19.3 98
Northeast Entrance 7420 9.9 9.9 100 11.4 11.9 96
Parker Peak 9420 22.1 19.3 115 21.1 18.4 115
Sylvan Lake 8440 17.7 18.6 95 19.8 20.6 96
Thumb Divide 7970 14.4 14.8 97 13.1 15.5 85
Two Ocean Plateau 9240 26.9 26.5 102 22.1 23.5 94
White Mill 8730 20.5 21.6 95 19.1 21.0 91
Wolverine 7650 12.3 10.6 116 14.1 11.2 126
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Basin Index (%) 98 97
WIND RIVER
Burroughs Creek 8760 11.4 -M * 14.8 -M *
Castle Creek 8410 6.4 7.1 90 7.2 7.8 92
Cold Springs 9640 7.7 6.4 120 8.0 7.8 103
Deer Park 9690 16.8 12.8 131 18.0 16.2 111
Hobbs Park 10080 13.8 12.2 113 13.8 11.0 125
Kirwin 9580 10.2 9.4 109 12.1 10.3 117
Little Warm 9370 10.4 9.1 114 12.2 11.0 111
South Pass 9040 14.4 13.4 107 15.7 13.7 115
St. Lawrence Alt 8610 5.6 -M * 8.6 -M *
Togwotee Pass 9590 22.8 21.6 106 23.9 22.6 106
Townsend Creek 8720 10.2 8.1 126 12.4 9.0 138
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Basin Index (%) 113 113
BIGHORN BASIN
Bald Mtn. 9360 18.8 16.4 115 15.6 14.2 110
Bear Trap Meadow 8200 5.7 5.8 98 5.5 7.2 76
Bone Springs Div 9340 13.8 14.6 95 10.5 13.4 78
Grave Springs 8560 7.9 7.8 101 9.0 8.4 107
Kirwin 9580 10.2 9.4 109 12.1 10.3 117
Marquette 8800 9.5 6.2 153 10.5 7.7 136
Middle Powder 7760 9.3 9.4 99 7.4 8.8 84
Owl Creek 8990 5.4 4.8 112 6.0 5.2 115
Powder River Pass 9480 6.9 9.9 70 8.7 11.2 78
Shell Creek 9570 10.9 13.1 83 10.0 12.0 83
Timber Creek 7910 5.9 4.1 144 6.8 6.6 103
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Basin Index (%) 103 97
SHOSHONE RIVER
Blackwater 9840 22.2 20.4 109 20.5 19.7 104
Evening Star 9040 23.3 23.7 98 24.5 25.8 95
Marquette 8800 9.5 6.2 153 10.5 7.7 136
Sylvan Lake 8440 17.7 18.6 95 19.8 20.6 96
Sylvan Road 7140 10.4 11.3 92 12.1 15.1 80
Younts Peak 8340 14.4 13.6 106 13.5 13.2 102
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Basin Index (%) 104 99
POWDER RIVER
Bear Trap Meadow 8200 5.7 5.8 98 5.5 7.2 76
Cloud Peak Reservoir 9830 10.1 13.2 77 10.3 11.6 89
Grave Springs 8560 7.9 7.8 101 9.0 8.4 107
Hansen Sawmill 8360 4.6 5.8 79 6.1 7.6 80
Middle Powder 7760 9.3 9.4 99 7.4 8.8 84
Powder River Pass 9480 6.9 9.9 70 8.7 11.2 78
Soldier Park 8680 3.2 5.9 54 5.7 8.0 71
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Basin Index (%) 83 84
TONGUE RIVER
Big Goose 8010 7.0 7.3 96 8.5 8.7 98
Bone Springs Div 9340 13.8 14.6 95 10.5 13.4 78
Burgess Junction 7900 10.4 9.5 109 11.4 10.4 110
Dome Lake 8890 9.1 10.2 89 6.8 11.1 61
Little Goose 8560 8.5 8.3 102 9.7 10.0 97
Sucker Creek 8840 11.3 11.0 103 13.0 12.2 107
Tie Creek 7050 8.3 4.8 173 11.1 9.2 121
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Basin Index (%) 104 95
BELLE FOURCHE
Blind Park 6900 5.0 7.2 69 7.8 9.8 80
Cole Canyon 5930 6.6 5.1 129 7.8 7.6 103
North Rapid Creek 6150 4.1 6.5 63 6.5 8.0 81
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Basin Index (%) 84 87
CHEYENNE RIVER BASIN
Blind Park 6900 5.0 7.2 69 7.8 9.8 80
North Rapid Creek 6150 4.1 6.5 63 6.5 8.0 81
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Basin Index (%) 66 80
UPPER N. PLATTE
Arapaho Ridge 10960 19.1 19.4 98 18.5 19.2 96
Blackhall Mtn 9830 27.1 26.9 101 27.9 26.1 107
Cinnabar Park 9670 16.5 18.1 91 19.5 21.0 93
Columbine 9170 24.7 21.5 115 24.9 21.7 115
Divide Peak 8700 16.4 17.3 95 18.3 19.2 95
Joe Wright 10140 21.1 18.2 116 25.6 23.2 110
Laprele Creek 8370 8.0 8.8 91 8.8 10.2 86
Med Bow 10500 36.7 -M * 30.7 -M *
Never Summer 10300 18.1 17.8 102 15.0 14.6 103
North French Creek 10150 28.5 24.8 115 27.0 23.5 115
Old Battle 9850 26.1 26.5 98 25.9 29.9 87
Rawah 9100 10.5 9.9 106 13.0 13.9 94
Sage Creek Basin 7830 11.2 11.9 94 11.4 11.6 98
Sand Lake 10080 26.1 23.4 112 24.8 22.0 113
South Brush Creek 8480 10.9 10.5 104 10.5 12.2 86
Tower 10610 40.0 38.7 103 36.4 36.2 101
Webber Springs 9250 17.9 20.0 90 20.4 22.6 90
Whiskey Park 8950 24.8 24.6 101 25.8 24.8 104
Willow Creek Pass 9520 11.8 11.6 102 11.8 12.1 98
Zirkel 9320 24.0 26.0 92 28.0 27.8 101
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Basin Index (%) 102 100
SWEETWATER
Deer Park 9690 16.8 12.8 131 18.0 16.2 111
Larsen Creek 8880 7.6 10.6 72 11.5 11.6 99
South Pass 9040 14.4 13.4 107 15.7 13.7 115
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Basin Index (%) 105 109
LOWER N. PLATTE
Casper Mtn. 7940 9.2 11.7 79 9.8 11.5 85
Laprele Creek 8370 8.0 8.8 91 8.8 10.2 86
Reno Hill 8410 11.1 12.0 92 12.8 12.0 107
Windy Peak 7900 6.4 6.9 93 6.7 8.5 79
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Basin Index (%) 88 90
LARAMIE RIVER
Brooklyn Lake 10250 21.8 18.6 117 21.9 19.0 115
Cinnabar Park 9670 16.5 18.1 91 19.5 21.0 93
Crow Creek 8320 3.1 6.5 48 7.0 9.3 75
Deadman Hill 10240 16.4 14.8 111 16.7 15.6 107
Rawah 9100 10.5 9.9 106 13.0 13.9 94
Roach 9710 12.6 14.2 89 15.3 16.4 93
Windy Peak 7900 6.4 6.9 93 6.7 8.5 79
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Basin Index (%) 98 97
S. PLATTE
Crow Creek 8320 3.1 6.5 48 7.0 9.3 75
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Basin Index (%) 48 75
LITTLE SNAKE RIVER
Battle Mountain 7460 10.6 11.2 95 14.1 13.4 105
Divide Peak 8700 16.4 17.3 95 18.3 19.2 95
Elk River 8710 15.4 16.5 93 17.8 17.0 105
Elkhead Divide 8780 15.3 -M * 16.9 -M *
Little Snake River 8930 23.4 24.4 96 28.4 28.4 100
Old Battle 9850 26.1 26.5 98 25.9 29.9 87
Sage Creek Basin 7830 11.2 11.9 94 11.4 11.6 98
Sandstone RS 8150 13.2 11.7 113 13.4 16.5 81
Whiskey Park 8950 24.8 24.6 101 25.8 24.8 104
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Basin Index (%) 98 96
UPPER GREEN RIVER
Big Sandy Opening 9100 10.4 12.0 87 10.5 11.5 91
Blind Bull Sum 8880 24.7 22.3 111 17.7 16.6 107
East Rim Divide 8010 10.7 10.0 107 10.6 10.3 103
Elkhart Park G.S. 9410 11.7 11.2 104 11.4 11.4 100
Gros Ventre Summit 8760 12.4 11.4 109 12.1 11.1 109
Gunsight Pass 9830 13.3 12.1 110 12.6 12.7 99
Indian Creek 9400 24.1 20.8 116 20.5 17.8 115
Kendall R.S. 7790 13.6 11.3 120 13.4 12.3 109
Larsen Creek 8880 7.6 10.6 72 11.5 11.6 99
Loomis Park 8240 15.1 14.2 106 15.4 15.6 99
New Fork Lake 8380 10.0 9.6 104 -M 9.6 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.5 12.1 112 14.8 12.8 116
Spring Creek Divide 9020 24.2 22.6 107 23.3 22.0 106
Triple Peak 8520 26.0 21.8 119 25.4 23.2 109
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Basin Index (%) 108 105
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.7 7.9 135 12.4 10.7 116
Buck Pasture 9620 13.4 -M * 17.3 -M *
EF Blacks Fork GS 9360 9.6 10.6 91 11.4 9.8 116
Hams Fork 7870 11.7 10.4 112 11.8 9.6 123
Henrys Fork 10180 -M -M * 12.2 -M *
Hewinta 9510 10.1 9.3 109 13.6 12.0 113
Hickerson Park 9130 6.8 7.5 91 8.8 8.8 100
Hole-in-Rock 9170 6.0 6.8 88 8.9 8.6 103
Indian Creek 9400 24.1 20.8 116 20.5 17.8 115
Kelley R.S. 8240 16.2 13.2 123 16.6 14.6 114
Spirit Lk 10240 12.2 11.2 109 13.2 14.4 92
Steel Creek Park 10140 15.1 13.2 114 16.2 13.9 117
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Basin Index (%) 110 111
UPPER BEAR RIVER
Bear River RS 8510 9.3 8.4 111 12.1 10.2 119
Bug Lake 7980 18.3 16.9 108 18.0 15.8 114
Burts Miller Ranch 7900 6.4 5.3 121 10.8 6.7 161
Chalk Creek #1 9160 18.5 20.8 89 21.0 20.6 102
Giveout 6940 9.1 7.8 117 11.3 10.6 107
Hayden Fork 9160 13.4 13.2 102 19.7 18.1 109
Kelley R.S. 8240 16.2 13.2 123 16.6 14.6 114
Lily Lake 9130 11.9 11.2 106 13.9 13.7 101
Monte Cristo 8930 24.6 24.2 102 23.0 22.2 104
Salt River Summit 7630 15.4 12.3 125 12.9 13.8 93
Spring Creek Divide 9020 24.2 22.6 107 23.3 22.0 106
Trial Lake 9970 23.6 19.7 120 22.8 19.9 115
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Basin Index (%) 109 109
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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.
