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 20 , 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 17.4 16.0 109 18.4 18.6 99
Blind Bull Sum 8880 24.5 22.1 111 17.5 16.6 105
Cottonwood Creek 7710 23.6 19.9 119 26.0 22.6 115
East Rim Divide 8010 10.6 10.0 106 10.4 10.2 102
Grand Targhee 9260 36.5 37.1 98 25.9 27.9 93
Granite Creek 6770 17.5 15.8 111 16.8 16.9 99
Grassy Lake 7330 29.6 29.6 100 32.2 32.0 101
Gros Ventre Summit 8760 12.1 11.3 107 11.8 11.1 106
Gunsight Pass 9830 13.2 12.1 109 12.5 12.6 99
Lewis Lake Divide 7880 29.6 28.6 103 31.6 29.5 107
Loomis Park 8240 15.0 14.2 106 15.3 15.6 98
Phillips Bench 8160 24.2 23.6 103 23.8 24.0 99
Salt River Summit 7630 15.4 12.4 124 12.8 13.8 93
Snake River Station 6900 19.4 16.5 118 20.0 19.8 101
Somsen Ranch 6830 14.3 11.5 124 15.4 14.7 105
Spring Creek Divide 9020 24.0 22.6 106 23.2 21.8 106
Thumb Divide 7970 13.8 14.6 95 12.7 15.4 82
Togwotee Pass 9590 22.5 21.4 105 23.6 22.6 104
Triple Peak 8520 25.9 21.8 119 25.3 23.2 109
Two Ocean Plateau 9240 26.2 26.4 99 21.9 23.5 93
Willow Creek 8060 32.8 26.8 122 32.1 29.8 108
Younts Peak 8340 13.9 13.6 102 13.1 13.1 100
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Basin Index (%) 108 102
MADISON HEADWATERS IN WYOMING
Black Bear 8160 31.9 36.0 89 31.3 33.2 94
Canyon 7870 11.7 -M * 12.2 -M *
Madison Plateau 7710 20.3 20.5 99 22.4 22.0 102
West Yellowstone 6680 10.4 10.3 101 11.4 13.0 88
Whiskey Creek 6790 14.6 14.4 101 18.6 17.6 106
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Basin Index (%) 95 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.9 19.8 95 17.5 18.2 96
Canyon 7870 11.7 -M * 12.2 -M *
Evening Star 9040 22.9 23.7 97 24.2 25.7 94
Fisher Creek 9110 26.0 29.2 89 27.2 28.9 94
Monument Peak 8740 16.2 18.7 87 18.8 19.1 98
Northeast Entrance 7420 9.8 10.0 98 11.2 11.9 94
Parker Peak 9420 21.7 19.0 114 20.9 18.2 115
Sylvan Lake 8440 17.3 18.5 94 19.4 20.6 94
Thumb Divide 7970 13.8 14.6 95 12.7 15.4 82
Two Ocean Plateau 9240 26.2 26.4 99 21.9 23.5 93
White Mill 8730 20.2 22.0 92 18.8 21.0 90
Wolverine 7650 12.0 10.6 113 13.9 11.2 124
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Basin Index (%) 96 97
WIND RIVER
Burroughs Creek 8760 11.4 -M * 14.6 -M *
Castle Creek 8410 6.3 7.0 90 7.1 7.8 91
Cold Springs 9640 7.7 6.4 120 8.1 7.8 104
Deer Park 9690 16.8 12.6 133 18.1 15.7 115
Hobbs Park 10080 13.9 12.2 114 13.8 11.0 125
Kirwin 9580 10.2 9.4 109 12.0 10.3 117
Little Warm 9370 10.4 9.0 116 12.2 11.0 111
South Pass 9040 14.4 13.3 108 15.8 13.3 119
St. Lawrence Alt 8610 5.6 -M * 8.5 -M *
Togwotee Pass 9590 22.5 21.4 105 23.6 22.6 104
Townsend Creek 8720 10.1 8.0 126 12.3 9.0 137
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Basin Index (%) 113 113
BIGHORN BASIN
Bald Mtn. 9360 18.6 16.4 113 15.3 14.2 108
Bear Trap Meadow 8200 5.8 5.8 100 5.5 7.2 76
Bone Springs Div 9340 13.4 14.5 92 10.2 13.3 77
Grave Springs 8560 7.9 7.8 101 9.0 8.4 107
Kirwin 9580 10.2 9.4 109 12.0 10.3 117
Marquette 8800 9.6 6.2 155 10.5 7.7 136
Middle Powder 7760 9.3 9.1 102 7.4 8.8 84
Owl Creek 8990 5.4 4.8 112 6.0 5.2 115
Powder River Pass 9480 6.8 9.8 69 8.5 11.0 77
Shell Creek 9570 10.7 13.0 82 9.7 12.0 81
Timber Creek 7910 5.9 4.1 144 6.7 6.6 102
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Basin Index (%) 103 96
SHOSHONE RIVER
Blackwater 9840 21.7 20.4 106 20.3 19.5 104
Evening Star 9040 22.9 23.7 97 24.2 25.7 94
Marquette 8800 9.6 6.2 155 10.5 7.7 136
Sylvan Lake 8440 17.3 18.5 94 19.4 20.6 94
Sylvan Road 7140 10.3 11.2 92 12.0 15.1 79
Younts Peak 8340 13.9 13.6 102 13.1 13.1 100
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Basin Index (%) 102 98
POWDER RIVER
Bear Trap Meadow 8200 5.8 5.8 100 5.5 7.2 76
Cloud Peak Reservoir 9830 9.9 13.2 75 10.0 11.4 88
Grave Springs 8560 7.9 7.8 101 9.0 8.4 107
Hansen Sawmill 8360 4.5 5.8 78 6.1 7.5 81
Middle Powder 7760 9.3 9.1 102 7.4 8.8 84
Powder River Pass 9480 6.8 9.8 69 8.5 11.0 77
Soldier Park 8680 3.1 5.9 53 5.6 8.0 70
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Basin Index (%) 82 84
TONGUE RIVER
Big Goose 8010 6.8 7.3 93 8.3 8.6 97
Bone Springs Div 9340 13.4 14.5 92 10.2 13.3 77
Burgess Junction 7900 10.3 9.4 110 11.1 10.2 109
Dome Lake 8890 8.9 10.1 88 6.8 10.8 63
Little Goose 8560 8.4 8.3 101 9.6 10.0 96
Sucker Creek 8840 11.2 10.8 104 12.8 12.0 107
Tie Creek 7050 8.2 4.8 171 11.0 9.2 120
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Basin Index (%) 103 94
BELLE FOURCHE
Blind Park 6900 4.9 7.1 69 7.8 9.8 80
Cole Canyon 5930 6.4 5.0 128 7.8 7.6 103
North Rapid Creek 6150 4.0 6.4 62 6.4 8.0 80
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Basin Index (%) 83 87
CHEYENNE RIVER BASIN
Blind Park 6900 4.9 7.1 69 7.8 9.8 80
North Rapid Creek 6150 4.0 6.4 62 6.4 8.0 80
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Basin Index (%) 66 80
UPPER N. PLATTE
Arapaho Ridge 10960 19.0 19.3 98 18.4 19.1 96
Blackhall Mtn 9830 26.8 26.7 100 27.6 26.0 106
Cinnabar Park 9670 16.5 18.1 91 19.3 21.0 92
Columbine 9170 24.4 21.6 113 24.6 21.7 113
Divide Peak 8700 16.3 17.4 94 18.2 19.0 96
Joe Wright 10140 20.8 18.4 113 25.4 23.0 110
Laprele Creek 8370 8.0 8.8 91 8.8 10.1 87
Med Bow 10500 36.6 -M * 30.6 -M *
Never Summer 10300 18.1 17.6 103 14.8 14.5 102
North French Creek 10150 28.4 24.5 116 26.9 23.2 116
Old Battle 9850 25.9 26.4 98 25.7 29.7 87
Rawah 9100 10.3 10.2 101 13.0 13.8 94
Sage Creek Basin 7830 11.3 12.1 93 11.4 11.6 98
Sand Lake 10080 26.0 23.3 112 24.7 21.7 114
South Brush Creek 8480 10.9 10.6 103 10.5 12.0 88
Tower 10610 39.8 38.8 103 36.4 36.1 101
Webber Springs 9250 17.8 19.8 90 20.2 22.4 90
Whiskey Park 8950 24.5 24.4 100 25.5 24.8 103
Willow Creek Pass 9520 11.8 11.6 102 11.7 12.0 98
Zirkel 9320 23.8 26.0 92 27.9 27.6 101
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Basin Index (%) 101 100
SWEETWATER
Deer Park 9690 16.8 12.6 133 18.1 15.7 115
Larsen Creek 8880 7.6 10.4 73 11.4 11.6 98
South Pass 9040 14.4 13.3 108 15.8 13.3 119
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Basin Index (%) 107 112
LOWER N. PLATTE
Casper Mtn. 7940 9.2 11.8 78 9.8 11.4 86
Laprele Creek 8370 8.0 8.8 91 8.8 10.1 87
Reno Hill 8410 11.0 11.8 93 12.8 12.0 107
Windy Peak 7900 6.4 6.8 94 6.7 8.4 80
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Basin Index (%) 88 91
LARAMIE RIVER
Brooklyn Lake 10250 21.7 18.6 117 21.7 18.9 115
Cinnabar Park 9670 16.5 18.1 91 19.3 21.0 92
Crow Creek 8320 3.2 6.5 49 7.0 9.3 75
Deadman Hill 10240 16.2 14.8 109 16.6 15.4 108
Rawah 9100 10.3 10.2 101 13.0 13.8 94
Roach 9710 12.6 14.0 90 15.2 16.2 94
Windy Peak 7900 6.4 6.8 94 6.7 8.4 80
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Basin Index (%) 98 97
S. PLATTE
Crow Creek 8320 3.2 6.5 49 7.0 9.3 75
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Basin Index (%) 49 75
LITTLE SNAKE RIVER
Battle Mountain 7460 10.4 11.0 95 14.1 13.2 107
Divide Peak 8700 16.3 17.4 94 18.2 19.0 96
Elk River 8710 15.4 16.5 93 17.6 17.0 104
Elkhead Divide 8780 15.3 -M * 16.8 -M *
Little Snake River 8930 23.1 24.0 96 28.2 28.4 99
Old Battle 9850 25.9 26.4 98 25.7 29.7 87
Sage Creek Basin 7830 11.3 12.1 93 11.4 11.6 98
Sandstone RS 8150 13.2 11.6 114 13.3 16.2 82
Whiskey Park 8950 24.5 24.4 100 25.5 24.8 103
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Basin Index (%) 98 96
UPPER GREEN RIVER
Big Sandy Opening 9100 10.2 12.0 85 10.3 11.5 90
Blind Bull Sum 8880 24.5 22.1 111 17.5 16.6 105
East Rim Divide 8010 10.6 10.0 106 10.4 10.2 102
Elkhart Park G.S. 9410 11.7 11.2 104 11.3 11.4 99
Gros Ventre Summit 8760 12.1 11.3 107 11.8 11.1 106
Gunsight Pass 9830 13.2 12.1 109 12.5 12.6 99
Indian Creek 9400 24.1 20.7 116 20.4 17.8 115
Kendall R.S. 7790 13.2 11.2 118 13.1 12.3 107
Larsen Creek 8880 7.6 10.4 73 11.4 11.6 98
Loomis Park 8240 15.0 14.2 106 15.3 15.6 98
New Fork Lake 8380 9.9 9.6 103 -M 9.6 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.3 12.1 110 14.6 12.7 115
Spring Creek Divide 9020 24.0 22.6 106 23.2 21.8 106
Triple Peak 8520 25.9 21.8 119 25.3 23.2 109
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Basin Index (%) 107 105
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.7 7.8 137 12.3 10.6 116
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 11.8 10.3 115 11.8 9.5 124
Henrys Fork 10180 -M -M * 12.1 -M *
Hewinta 9510 10.1 9.1 111 13.5 11.9 113
Hickerson Park 9130 6.7 7.2 93 8.8 8.8 100
Hole-in-Rock 9170 6.1 6.6 92 8.7 8.6 101
Indian Creek 9400 24.1 20.7 116 20.4 17.8 115
Kelley R.S. 8240 16.2 13.2 123 16.5 14.5 114
Spirit Lk 10240 12.2 11.2 109 13.2 14.4 92
Steel Creek Park 10140 15.1 13.0 116 16.2 13.8 117
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Basin Index (%) 112 111
UPPER BEAR RIVER
Bear River RS 8510 9.2 8.4 110 12.1 10.2 119
Bug Lake 7980 18.2 16.8 108 18.0 15.8 114
Burts Miller Ranch 7900 6.3 4.9 129 10.8 6.6 164
Chalk Creek #1 9160 18.5 20.7 89 21.1 20.6 102
Giveout 6940 9.0 7.8 115 11.2 10.6 106
Hayden Fork 9160 13.4 13.2 102 19.6 18.1 108
Kelley R.S. 8240 16.2 13.2 123 16.5 14.5 114
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 12.4 124 12.8 13.8 93
Spring Creek Divide 9020 24.0 22.6 106 23.2 21.8 106
Trial Lake 9970 23.6 19.6 120 22.8 19.8 115
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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.
