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: APRIL 4 , 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 18.3 16.6 110 20.9 19.8 106
Blind Bull Sum 8880 25.9 23.6 110 18.7 17.5 107
Cottonwood Creek 7710 25.3 21.4 118 28.4 24.8 115
East Rim Divide 8010 11.1 10.4 107 11.5 11.0 105
Grand Targhee 9260 39.7 42.0 95 30.0 30.0 100
Granite Creek 6770 18.3 15.3 120 18.2 17.8 102
Grassy Lake 7330 31.9 32.2 99 35.0 34.0 103
Gros Ventre Summit 8760 12.8 12.8 100 13.1 12.0 109
Gunsight Pass 9830 13.9 12.8 109 13.6 13.4 101
Lewis Lake Divide 7880 32.5 30.2 108 35.1 32.2 109
Loomis Park 8240 15.3 15.4 99 16.6 16.6 100
Phillips Bench 8160 26.4 26.0 102 26.9 26.2 103
Salt River Summit 7630 15.5 13.4 116 13.9 15.8 88
Snake River Station 6900 19.6 16.7 117 22.0 22.0 100
Somsen Ranch 6830 14.0 10.8 130 16.6 16.4 101
Spring Creek Divide 9020 26.6 24.6 108 25.5 23.2 110
Thumb Divide 7970 15.0 16.2 93 14.5 17.2 84
Togwotee Pass 9590 24.4 23.2 105 25.7 24.2 106
Triple Peak 8520 28.7 22.8 126 27.3 24.6 111
Two Ocean Plateau 9240 28.8 28.4 101 24.8 25.4 98
Willow Creek 8060 35.2 29.6 119 35.1 32.3 109
Younts Peak 8340 15.2 14.2 107 14.6 14.6 100
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Basin Index (%) 108 104
MADISON HEADWATERS IN WYOMING
Black Bear 8160 34.2 37.8 90 34.5 36.6 94
Canyon 7870 12.4 -M * 13.3 -M *
Madison Plateau 7710 22.3 22.4 100 24.7 24.3 102
West Yellowstone 6680 10.8 10.0 108 12.6 13.8 91
Whiskey Creek 6790 15.7 15.4 102 20.3 19.2 106
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Basin Index (%) 97 98
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 21.5 21.2 101 20.0 19.6 102
Canyon 7870 12.4 -M * 13.3 -M *
Evening Star 9040 25.5 24.7 103 27.4 27.2 101
Fisher Creek 9110 29.2 32.2 91 30.3 31.8 95
Monument Peak 8740 18.2 20.2 90 21.0 20.9 100
Northeast Entrance 7420 9.8 9.0 109 12.6 12.7 99
Parker Peak 9420 24.3 20.3 120 23.2 19.5 119
Sylvan Lake 8440 18.4 19.4 95 21.5 22.6 95
Thumb Divide 7970 15.0 16.2 93 14.5 17.2 84
Two Ocean Plateau 9240 28.8 28.4 101 24.8 25.4 98
White Mill 8730 23.0 23.2 99 21.3 22.2 96
Wolverine 7650 12.0 10.6 113 14.6 12.4 118
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Basin Index (%) 100 100
WIND RIVER
Burroughs Creek 8760 12.5 -M * 16.4 -M *
Castle Creek 8410 6.1 6.3 97 8.2 8.2 100
Cold Springs 9640 7.4 7.0 106 8.9 9.0 99
Deer Park 9690 17.5 14.7 119 19.6 17.5 112
Hobbs Park 10080 14.4 14.2 101 14.7 13.2 111
Kirwin 9580 11.9 10.5 113 13.8 11.7 118
Little Warm 9370 10.8 10.0 108 13.0 11.6 112
South Pass 9040 14.7 14.6 101 16.8 15.4 109
St. Lawrence Alt 8610 5.2 -M * 9.6 -M *
Togwotee Pass 9590 24.4 23.2 105 25.7 24.2 106
Townsend Creek 8720 10.4 9.2 113 13.1 10.8 121
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Basin Index (%) 107 110
BIGHORN BASIN
Bald Mtn. 9360 20.6 19.2 107 16.9 15.7 108
Bear Trap Meadow 8200 5.5 5.8 95 6.6 8.2 80
Bone Springs Div 9340 15.7 16.8 93 11.8 15.1 78
Grave Springs 8560 8.1 8.2 99 10.0 9.0 111
Kirwin 9580 11.9 10.5 113 13.8 11.7 118
Marquette 8800 10.1 7.2 140 11.6 9.0 129
Middle Powder 7760 9.9 10.8 92 8.5 9.6 89
Owl Creek 8990 5.8 5.6 104 7.1 6.0 118
Powder River Pass 9480 7.6 10.4 73 10.3 12.3 84
Shell Creek 9570 13.0 15.0 87 11.9 13.6 88
Timber Creek 7910 6.8 4.8 142 8.5 7.8 109
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Basin Index (%) 101 99
SHOSHONE RIVER
Blackwater 9840 23.8 22.4 106 22.5 21.5 105
Evening Star 9040 25.5 24.7 103 27.4 27.2 101
Marquette 8800 10.1 7.2 140 11.6 9.0 129
Sylvan Lake 8440 18.4 19.4 95 21.5 22.6 95
Sylvan Road 7140 8.8 10.6 83 13.4 16.0 84
Younts Peak 8340 15.2 14.2 107 14.6 14.6 100
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Basin Index (%) 103 100
POWDER RIVER
Bear Trap Meadow 8200 5.5 5.8 95 6.6 8.2 80
Cloud Peak Reservoir 9830 11.1 14.4 77 11.9 13.2 90
Grave Springs 8560 8.1 8.2 99 10.0 9.0 111
Hansen Sawmill 8360 5.4 6.2 87 7.5 8.2 91
Middle Powder 7760 9.9 10.8 92 8.5 9.6 89
Powder River Pass 9480 7.6 10.4 73 10.3 12.3 84
Soldier Park 8680 3.7 7.7 48 6.9 9.1 76
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Basin Index (%) 81 89
TONGUE RIVER
Big Goose 8010 8.2 8.6 95 10.0 9.8 102
Bone Springs Div 9340 15.7 16.8 93 11.8 15.1 78
Burgess Junction 7900 11.3 10.6 107 12.2 11.5 106
Dome Lake 8890 11.0 11.6 95 10.7 12.6 85
Little Goose 8560 10.0 9.5 105 11.9 11.8 101
Sucker Creek 8840 12.0 11.8 102 14.4 13.6 106
Tie Creek 7050 7.1 4.8 148 11.8 10.4 113
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Basin Index (%) 102 98
BELLE FOURCHE
Blind Park 6900 4.2 7.1 59 9.6 10.6 91
Cole Canyon 5930 5.7 5.4 106 9.6 9.0 107
North Rapid Creek 6150 3.0 6.4 47 8.0 8.6 93
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Basin Index (%) 68 96
CHEYENNE RIVER BASIN
Blind Park 6900 4.2 7.1 59 9.6 10.6 91
North Rapid Creek 6150 3.0 6.4 47 8.0 8.6 93
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Basin Index (%) 53 92
UPPER N. PLATTE
Arapaho Ridge 10960 20.6 21.8 94 20.4 21.3 96
Blackhall Mtn 9830 29.8 30.4 98 30.8 29.1 106
Cinnabar Park 9670 17.7 20.6 86 21.7 23.4 93
Columbine 9170 24.7 21.8 113 27.1 23.6 115
Divide Peak 8700 16.9 19.6 86 20.2 21.2 95
Joe Wright 10140 23.1 20.1 115 28.3 25.6 111
Laprele Creek 8370 8.1 9.6 84 9.9 11.6 85
Med Bow 10500 41.2 -M * 35.0 -M *
Never Summer 10300 20.9 20.4 102 17.1 16.6 103
North French Creek 10150 32.1 28.3 113 30.7 26.2 117
Old Battle 9850 29.8 31.0 96 29.3 34.2 86
Rawah 9100 11.0 10.6 104 14.8 15.3 97
Sage Creek Basin 7830 9.7 12.6 77 12.6 12.8 98
Sand Lake 10080 29.7 27.0 110 28.2 24.6 115
South Brush Creek 8480 10.5 11.8 89 12.2 13.6 90
Tower 10610 43.4 42.8 101 42.6 38.8 110
Webber Springs 9250 19.2 22.2 86 22.8 25.2 90
Whiskey Park 8950 27.4 27.1 101 29.1 27.2 107
Willow Creek Pass 9520 13.3 13.0 102 13.2 13.4 99
Zirkel 9320 24.5 27.6 89 30.7 30.4 101
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Basin Index (%) 99 102
SWEETWATER
Deer Park 9690 17.5 14.7 119 19.6 17.5 112
Larsen Creek 8880 6.8 10.1 67 12.3 13.4 92
South Pass 9040 14.7 14.6 101 16.8 15.4 109
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Basin Index (%) 99 105
LOWER N. PLATTE
Casper Mtn. 7940 9.3 13.0 72 11.1 13.6 82
Laprele Creek 8370 8.1 9.6 84 9.9 11.6 85
Reno Hill 8410 12.0 14.0 86 14.1 14.5 97
Windy Peak 7900 6.5 8.0 81 7.8 10.2 76
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Basin Index (%) 80 86
LARAMIE RIVER
Brooklyn Lake 10250 23.5 21.4 110 24.5 21.3 115
Cinnabar Park 9670 17.7 20.6 86 21.7 23.4 93
Crow Creek 8320 2.4 6.2 39 8.6 10.5 82
Deadman Hill 10240 17.8 15.8 113 18.3 17.6 104
Rawah 9100 11.0 10.6 104 14.8 15.3 97
Roach 9710 13.6 15.4 88 17.2 18.6 92
Windy Peak 7900 6.5 8.0 81 7.8 10.2 76
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Basin Index (%) 94 97
S. PLATTE
Crow Creek 8320 2.4 6.2 39 8.6 10.5 82
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Basin Index (%) 39 82
LITTLE SNAKE RIVER
Battle Mountain 7460 8.8 10.5 84 16.1 14.6 110
Divide Peak 8700 16.9 19.6 86 20.2 21.2 95
Elk River 8710 15.2 18.2 84 19.8 18.9 105
Elkhead Divide 8780 15.9 -M * 19.0 -M *
Little Snake River 8930 24.7 26.5 93 31.4 31.5 100
Old Battle 9850 29.8 31.0 96 29.3 34.2 86
Sage Creek Basin 7830 9.7 12.6 77 12.6 12.8 98
Sandstone RS 8150 12.6 12.8 98 15.1 17.2 88
Whiskey Park 8950 27.4 27.1 101 29.1 27.2 107
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Basin Index (%) 92 98
UPPER GREEN RIVER
Big Sandy Opening 9100 11.2 12.9 87 11.6 12.7 91
Blind Bull Sum 8880 25.9 23.6 110 18.7 17.5 107
East Rim Divide 8010 11.1 10.4 107 11.5 11.0 105
Elkhart Park G.S. 9410 12.7 12.4 102 12.6 12.6 100
Gros Ventre Summit 8760 12.8 12.8 100 13.1 12.0 109
Gunsight Pass 9830 13.9 12.8 109 13.6 13.4 101
Indian Creek 9400 26.3 23.4 112 22.4 19.4 115
Kendall R.S. 7790 13.8 11.2 123 14.3 13.0 110
Larsen Creek 8880 6.8 10.1 67 12.3 13.4 92
Loomis Park 8240 15.3 15.4 99 16.6 16.6 100
New Fork Lake 8380 9.9 10.5 94 -M 10.6 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 14.0 12.6 111 16.0 13.8 116
Spring Creek Divide 9020 26.6 24.6 108 25.5 23.2 110
Triple Peak 8520 28.7 22.8 126 27.3 24.6 111
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Basin Index (%) 106 106
LOWER GREEN RIVER
Blacks Fork Jct 8880 10.9 9.0 121 13.6 12.2 111
Buck Pasture 9620 14.1 -M * 19.2 -M *
EF Blacks Fork GS 9360 10.0 11.4 88 12.8 10.8 119
Hams Fork 7870 11.4 11.1 103 12.8 11.0 116
Henrys Fork 10180 -M -M * 13.6 -M *
Hewinta 9510 9.2 10.8 85 14.7 13.4 110
Hickerson Park 9130 6.4 7.4 86 10.0 10.2 98
Hole-in-Rock 9170 6.6 6.9 96 10.2 9.8 104
Indian Creek 9400 26.3 23.4 112 22.4 19.4 115
Kelley R.S. 8240 17.2 14.9 115 18.1 15.9 114
Spirit Lk 10240 13.1 13.2 99 14.7 16.8 88
Steel Creek Park 10140 16.2 14.2 114 17.6 16.2 109
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Basin Index (%) 104 108
UPPER BEAR RIVER
Bear River RS 8510 7.2 9.2 78 13.3 11.8 113
Bug Lake 7980 18.6 18.6 100 19.6 17.8 110
Burts Miller Ranch 7900 4.8 5.7 84 12.2 7.7 158
Chalk Creek #1 9160 20.1 22.8 88 23.2 22.4 104
Giveout 6940 9.2 8.0 115 12.4 11.6 107
Hayden Fork 9160 13.6 15.0 91 21.6 20.2 107
Kelley R.S. 8240 17.2 14.9 115 18.1 15.9 114
Lily Lake 9130 12.5 12.4 101 15.3 14.7 104
Monte Cristo 8930 25.5 27.2 94 24.6 26.0 95
Salt River Summit 7630 15.5 13.4 116 13.9 15.8 88
Spring Creek Divide 9020 26.6 24.6 108 25.5 23.2 110
Trial Lake 9970 24.7 21.4 115 25.0 22.2 113
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Basin Index (%) 101 107
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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.
