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 TUESDAY: MARCH 18 , 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 17.7 16.0 111 18.2 18.2 100
Blind Bull Sum 8880 24.5 21.8 112 17.5 16.2 108
Cottonwood Creek 7710 23.4 19.8 118 25.7 22.4 115
East Rim Divide 8010 10.4 10.0 104 10.4 10.1 103
Grand Targhee 9260 36.3 36.6 99 25.9 27.0 96
Granite Creek 6770 17.7 15.6 113 16.9 16.8 101
Grassy Lake 7330 29.6 29.2 101 32.0 31.8 101
Gros Ventre Summit 8760 11.9 11.3 105 11.6 11.0 105
Gunsight Pass 9830 12.8 11.9 108 12.2 12.4 98
Lewis Lake Divide 7880 29.5 27.9 106 31.3 29.4 106
Loomis Park 8240 15.0 13.8 109 15.2 15.4 99
Phillips Bench 8160 24.2 23.4 103 23.9 24.0 100
Salt River Summit 7630 15.1 12.2 124 12.6 13.7 92
Snake River Station 6900 19.5 16.1 121 20.2 19.6 103
Somsen Ranch 6830 14.0 11.6 121 15.4 14.6 105
Spring Creek Divide 9020 24.4 22.3 109 23.4 21.6 108
Thumb Divide 7970 13.7 14.4 95 12.9 15.4 84
Togwotee Pass 9590 22.1 21.1 105 23.3 22.4 104
Triple Peak 8520 25.8 21.7 119 25.2 23.2 109
Two Ocean Plateau 9240 25.8 26.0 99 21.7 23.4 93
Willow Creek 8060 32.5 26.6 122 -M 29.1 *
Younts Peak 8340 13.9 13.2 105 13.1 13.0 101
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Basin Index (%) 109 102
MADISON HEADWATERS IN WYOMING
Black Bear 8160 31.8 35.2 90 31.2 33.0 95
Canyon 7870 11.6 -M * 12.1 -M *
Madison Plateau 7710 20.3 20.3 100 22.2 22.0 101
West Yellowstone 6680 10.5 10.2 103 11.4 13.0 88
Whiskey Creek 6790 14.7 14.6 101 18.5 17.6 105
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Basin Index (%) 96 97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.9 19.6 96 17.6 18.2 97
Canyon 7870 11.6 -M * 12.1 -M *
Evening Star 9040 22.6 23.4 97 24.0 25.6 94
Fisher Creek 9110 25.9 28.4 91 27.2 28.7 95
Monument Peak 8740 16.0 18.2 88 18.4 19.0 97
Northeast Entrance 7420 9.9 9.7 102 11.2 11.8 95
Parker Peak 9420 21.5 18.9 114 20.8 18.2 114
Sylvan Lake 8440 16.8 18.1 93 19.4 20.4 95
Thumb Divide 7970 13.7 14.4 95 12.9 15.4 84
Two Ocean Plateau 9240 25.8 26.0 99 21.7 23.4 93
White Mill 8730 20.1 21.6 93 18.8 20.8 90
Wolverine 7650 11.8 10.9 108 13.9 11.0 126
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Basin Index (%) 97 97
WIND RIVER
Burroughs Creek 8760 11.1 -M * 14.4 -M *
Castle Creek 8410 6.2 6.9 90 7.0 7.8 90
Cold Springs 9640 7.2 6.5 111 7.5 7.6 99
Deer Park 9690 16.2 12.0 135 17.6 15.0 117
Hobbs Park 10080 12.7 11.8 108 12.6 10.6 119
Kirwin 9580 9.8 9.4 104 11.6 10.1 115
Little Warm 9370 9.9 8.9 111 11.8 10.8 109
South Pass 9040 13.8 12.8 108 15.1 12.8 118
St. Lawrence Alt 8610 4.9 -M * 7.7 -M *
Togwotee Pass 9590 22.1 21.1 105 23.3 22.4 104
Townsend Creek 8720 9.0 8.0 112 11.3 8.9 127
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Basin Index (%) 110 111
BIGHORN BASIN
Bald Mtn. 9360 17.9 16.5 108 14.7 14.0 105
Bear Trap Meadow 8200 5.4 5.6 96 5.4 7.0 77
Bone Springs Div 9340 13.3 14.2 94 10.0 13.1 76
Grave Springs 8560 7.5 7.6 99 8.6 8.2 105
Kirwin 9580 9.8 9.4 104 11.6 10.1 115
Marquette 8800 8.4 6.1 138 9.6 7.6 126
Middle Powder 7760 8.6 9.0 96 6.9 8.7 79
Owl Creek 8990 5.0 4.8 104 5.7 5.1 112
Powder River Pass 9480 6.6 9.7 68 8.4 10.8 78
Shell Creek 9570 10.4 13.0 80 9.6 11.8 81
Timber Creek 7910 5.1 4.1 124 6.0 6.4 94
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Basin Index (%) 98 94
SHOSHONE RIVER
Blackwater 9840 21.1 20.3 104 19.7 19.3 102
Evening Star 9040 22.6 23.4 97 24.0 25.6 94
Marquette 8800 8.4 6.1 138 9.6 7.6 126
Sylvan Lake 8440 16.8 18.1 93 19.4 20.4 95
Sylvan Road 7140 10.2 10.8 94 11.7 14.9 79
Younts Peak 8340 13.9 13.2 105 13.1 13.0 101
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Basin Index (%) 101 97
POWDER RIVER
Bear Trap Meadow 8200 5.4 5.6 96 5.4 7.0 77
Cloud Peak Reservoir 9830 9.2 12.9 71 9.5 11.0 86
Grave Springs 8560 7.5 7.6 99 8.6 8.2 105
Hansen Sawmill 8360 4.1 5.8 71 5.6 7.4 76
Middle Powder 7760 8.6 9.0 96 6.9 8.7 79
Powder River Pass 9480 6.6 9.7 68 8.4 10.8 78
Soldier Park 8680 2.9 5.9 49 5.4 8.0 68
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Basin Index (%) 78 82
TONGUE RIVER
Big Goose 8010 5.7 7.2 79 7.2 8.6 84
Bone Springs Div 9340 13.3 14.2 94 10.0 13.1 76
Burgess Junction 7900 9.0 9.4 96 9.8 10.2 96
Dome Lake 8890 8.0 10.0 80 6.8 10.6 64
Little Goose 8560 7.1 8.3 86 8.5 9.9 86
Sucker Creek 8840 9.8 10.6 92 11.8 11.9 99
Tie Creek 7050 6.4 4.6 139 9.0 9.1 99
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Basin Index (%) 92 86
BELLE FOURCHE
Blind Park 6900 4.5 7.0 64 7.6 9.6 79
Cole Canyon 5930 5.4 5.0 108 7.2 7.6 95
North Rapid Creek 6150 4.0 6.2 65 6.2 7.8 79
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Basin Index (%) 76 84
CHEYENNE RIVER BASIN
Blind Park 6900 4.5 7.0 64 7.6 9.6 79
North Rapid Creek 6150 4.0 6.2 65 6.2 7.8 79
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Basin Index (%) 64 79
UPPER N. PLATTE
Arapaho Ridge 10960 19.0 19.2 99 18.2 19.1 95
Blackhall Mtn 9830 25.8 26.4 98 26.7 25.8 103
Cinnabar Park 9670 16.4 18.1 91 19.2 21.0 91
Columbine 9170 24.2 20.8 116 24.4 21.2 115
Divide Peak 8700 15.6 17.0 92 17.8 18.4 97
Joe Wright 10140 20.3 18.2 112 24.7 22.8 108
Laprele Creek 8370 7.6 8.4 90 8.4 9.9 85
Med Bow 10500 35.4 -M * 30.1 -M *
Never Summer 10300 17.0 17.6 97 14.2 14.5 98
North French Creek 10150 28.0 24.0 117 26.2 22.8 115
Old Battle 9850 25.1 26.0 97 25.2 29.1 87
Rawah 9100 10.3 9.6 107 12.7 13.2 96
Sage Creek Basin 7830 11.1 12.0 92 11.2 11.4 98
Sand Lake 10080 24.7 22.6 109 23.9 21.0 114
South Brush Creek 8480 10.6 10.8 98 10.1 11.7 86
Tower 10610 38.8 38.4 101 36.5 35.5 103
Webber Springs 9250 17.2 19.4 89 19.7 21.8 90
Whiskey Park 8950 24.4 24.3 100 25.1 24.3 103
Willow Creek Pass 9520 11.6 11.2 104 11.5 11.9 97
Zirkel 9320 23.6 26.0 91 27.7 27.6 100
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Basin Index (%) 100 100
SWEETWATER
Deer Park 9690 16.2 12.0 135 17.6 15.0 117
Larsen Creek 8880 7.7 10.5 73 11.5 11.4 101
South Pass 9040 13.8 12.8 108 15.1 12.8 118
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Basin Index (%) 107 113
LOWER N. PLATTE
Casper Mtn. 7940 8.4 11.5 73 9.4 11.2 84
Laprele Creek 8370 7.6 8.4 90 8.4 9.9 85
Reno Hill 8410 9.8 11.6 84 11.6 12.0 97
Windy Peak 7900 6.1 6.8 90 6.4 8.3 77
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Basin Index (%) 83 86
LARAMIE RIVER
Brooklyn Lake 10250 21.4 17.8 120 21.4 18.4 116
Cinnabar Park 9670 16.4 18.1 91 19.2 21.0 91
Crow Creek 8320 3.2 6.6 48 6.8 9.3 73
Deadman Hill 10240 15.7 14.6 108 16.0 15.2 105
Rawah 9100 10.3 9.6 107 12.7 13.2 96
Roach 9710 12.5 13.6 92 15.2 15.8 96
Windy Peak 7900 6.1 6.8 90 6.4 8.3 77
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Basin Index (%) 98 97
S. PLATTE
Crow Creek 8320 3.2 6.6 48 6.8 9.3 73
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Basin Index (%) 48 73
LITTLE SNAKE RIVER
Battle Mountain 7460 10.1 11.1 91 13.6 13.1 104
Divide Peak 8700 15.6 17.0 92 17.8 18.4 97
Elk River 8710 15.0 16.6 90 17.4 16.8 104
Elkhead Divide 8780 15.2 -M * 16.4 -M *
Little Snake River 8930 22.5 23.9 94 27.6 28.2 98
Old Battle 9850 25.1 26.0 97 25.2 29.1 87
Sage Creek Basin 7830 11.1 12.0 92 11.2 11.4 98
Sandstone RS 8150 12.9 11.4 113 13.0 15.9 82
Whiskey Park 8950 24.4 24.3 100 25.1 24.3 103
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Basin Index (%) 96 96
UPPER GREEN RIVER
Big Sandy Opening 9100 10.1 11.7 86 10.2 11.2 91
Blind Bull Sum 8880 24.5 21.8 112 17.5 16.2 108
East Rim Divide 8010 10.4 10.0 104 10.4 10.1 103
Elkhart Park G.S. 9410 11.6 11.1 105 11.2 11.2 100
Gros Ventre Summit 8760 11.9 11.3 105 11.6 11.0 105
Gunsight Pass 9830 12.8 11.9 108 12.2 12.4 98
Indian Creek 9400 24.0 20.6 117 20.4 17.4 117
Kendall R.S. 7790 13.4 11.0 122 13.1 12.1 108
Larsen Creek 8880 7.7 10.5 73 11.5 11.4 101
Loomis Park 8240 15.0 13.8 109 15.2 15.4 99
New Fork Lake 8380 9.9 9.6 103 -M 9.5 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 13.6 12.0 113 14.9 12.6 118
Spring Creek Divide 9020 24.4 22.3 109 23.4 21.6 108
Triple Peak 8520 25.8 21.7 119 25.2 23.2 109
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Basin Index (%) 108 106
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.4 7.8 133 12.2 10.5 116
Buck Pasture 9620 12.7 -M * 16.7 -M *
EF Blacks Fork GS 9360 9.4 10.4 90 11.2 9.8 114
Hams Fork 7870 11.7 10.2 115 11.8 9.4 126
Henrys Fork 10180 -M -M * 11.7 -M *
Hewinta 9510 9.7 8.6 113 13.2 11.4 116
Hickerson Park 9130 6.6 6.8 97 8.6 8.8 98
Hole-in-Rock 9170 5.8 6.4 91 8.8 8.5 104
Indian Creek 9400 24.0 20.6 117 20.4 17.4 117
Kelley R.S. 8240 16.2 13.1 124 16.5 14.4 115
Spirit Lk 10240 11.9 10.4 114 12.9 14.4 90
Steel Creek Park 10140 14.5 12.8 113 15.7 13.2 119
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Basin Index (%) 112 111
UPPER BEAR RIVER
Bear River RS 8510 8.8 8.4 105 11.6 10.1 115
Bug Lake 7980 18.1 16.5 110 17.8 15.5 115
Burts Miller Ranch 7900 6.0 4.9 122 10.5 6.6 159
Chalk Creek #1 9160 17.7 20.0 88 20.4 20.5 100
Giveout 6940 9.2 8.0 115 11.3 10.4 109
Hayden Fork 9160 13.0 13.6 96 19.2 17.5 110
Kelley R.S. 8240 16.2 13.1 124 16.5 14.4 115
Lily Lake 9130 11.4 11.2 102 13.5 13.6 99
Monte Cristo 8930 24.3 23.8 102 22.9 21.9 105
Salt River Summit 7630 15.1 12.2 124 12.6 13.7 92
Spring Creek Divide 9020 24.4 22.3 109 23.4 21.6 108
Trial Lake 9970 23.2 19.6 118 22.4 19.6 114
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Basin Index (%) 108 109
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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.
