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 WEDNESDAY: APRIL 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 13.2 13.2 100 21.2 22.0 96
Blind Bull Sum 8880 27.2 25.0 109 19.7 19.1 103
Cottonwood Creek 7710 21.6 19.9 109 29.7 26.8 111
East Rim Divide 8010 5.6 9.3 60 13.1 11.8 111
Grand Targhee 9260 40.4 46.7 87 30.7 35.0 88
Granite Creek 6770 13.7 11.9 115 18.9 19.6 96
Grassy Lake 7330 27.6 31.2 88 35.3 37.4 94
Gros Ventre Summit 8760 12.4 13.1 95 14.4 13.6 106
Gunsight Pass 9830 13.2 13.2 100 14.9 15.0 99
Lewis Lake Divide 7880 30.2 32.4 93 36.2 35.4 102
Loomis Park 8240 12.8 13.0 98 18.8 17.4 108
Phillips Bench 8160 24.3 26.6 91 27.7 27.6 100
Salt River Summit 7630 11.8 11.0 107 14.7 17.2 85
Snake River Station 6900 14.1 14.1 100 22.4 23.5 95
Somsen Ranch 6830 4.8 6.0 80 17.2 17.4 99
Spring Creek Divide 9020 28.1 25.6 110 26.6 24.8 107
Thumb Divide 7970 -M 16.7 * -M 19.8 *
Togwotee Pass 9590 24.1 24.9 97 26.5 26.1 102
Triple Peak 8520 25.1 20.6 122 28.7 27.1 106
Two Ocean Plateau 9240 30.5 32.7 93 25.6 28.6 90
Willow Creek 8060 31.4 28.2 111 37.9 35.4 107
Younts Peak 8340 12.5 15.2 82 15.1 16.4 92
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Basin Index (%) 98 100
MADISON HEADWATERS IN WYOMING
Black Bear 8160 33.2 39.4 84 35.8 39.2 91
Canyon 7870 12.2 13.1 93 14.6 16.8 87
Madison Plateau 7710 22.3 23.4 95 26.2 26.2 100
West Yellowstone 6680 4.1 5.3 77 13.6 15.5 88
Whiskey Creek 6790 14.2 15.4 92 21.6 21.8 99
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Basin Index (%) 89 94
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 24.3 23.8 102 22.6 22.2 102
Canyon 7870 12.2 13.1 93 14.6 16.8 87
Evening Star 9040 26.7 26.8 100 29.8 30.5 98
Fisher Creek 9110 31.7 35.6 89 33.5 35.6 94
Monument Peak 8740 19.8 22.4 88 23.3 24.0 97
Northeast Entrance 7420 5.0 6.0 83 14.3 14.0 102
Parker Peak 9420 26.4 24.2 109 25.1 21.3 118
Sylvan Lake 8440 15.6 20.2 77 22.8 25.0 91
Thumb Divide 7970 -M 16.7 * -M 19.8 *
Two Ocean Plateau 9240 30.5 32.7 93 25.6 28.6 90
White Mill 8730 26.2 25.6 102 23.8 24.5 97
Wolverine 7650 9.4 7.0 134 16.3 13.3 123
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Basin Index (%) 96 98
WIND RIVER
Burroughs Creek 8760 9.6 -M * 17.3 -M *
Castle Creek 8410 1.9 3.4 56 8.8 9.1 97
Cold Springs 9640 3.9 6.4 61 10.2 10.4 98
Deer Park 9690 17.0 15.8 108 21.4 20.4 105
Hobbs Park 10080 14.5 15.8 92 16.4 15.0 109
Kirwin 9580 11.9 11.6 103 15.0 13.8 109
Little Warm 9370 9.5 10.2 93 14.3 12.8 112
South Pass 9040 14.2 15.1 94 18.7 17.4 107
St. Lawrence Alt 8610 .3 -M * 10.8 -M *
Togwotee Pass 9590 24.1 24.9 97 26.5 26.1 102
Townsend Creek 8720 10.8 9.8 110 15.3 13.2 116
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Basin Index (%) 95 106
BIGHORN BASIN
Bald Mtn. 9360 21.8 20.2 108 17.9 17.4 103
Bear Trap Meadow 8200 .3 3.4 9 7.5 10.2 74
Bone Springs Div 9340 17.2 17.8 97 12.7 17.4 73
Grave Springs 8560 6.1 8.2 74 10.8 11.1 97
Kirwin 9580 11.9 11.6 103 15.0 13.8 109
Marquette 8800 9.4 8.0 118 12.5 10.9 115
Middle Powder 7760 9.5 11.4 83 9.4 11.2 84
Owl Creek 8990 .5 3.4 15 8.0 7.3 110
Powder River Pass 9480 6.3 10.5 60 11.8 14.6 81
Shell Creek 9570 13.8 16.6 83 13.0 15.2 86
Timber Creek 7910 5.2 4.8 108 9.6 9.2 104
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Basin Index (%) 88 93
SHOSHONE RIVER
Blackwater 9840 26.1 25.5 102 24.5 24.4 100
Evening Star 9040 26.7 26.8 100 29.8 30.5 98
Marquette 8800 9.4 8.0 118 12.5 10.9 115
Sylvan Lake 8440 15.6 20.2 77 22.8 25.0 91
Sylvan Road 7140 .0 8.4 0 14.2 17.7 80
Younts Peak 8340 12.5 15.2 82 15.1 16.4 92
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Basin Index (%) 87 95
POWDER RIVER
Bear Trap Meadow 8200 .3 3.4 9 7.5 10.2 74
Cloud Peak Reservoir 9830 11.4 15.8 72 13.7 15.2 90
Grave Springs 8560 6.1 8.2 74 10.8 11.1 97
Hansen Sawmill 8360 3.8 5.0 76 8.8 9.9 89
Middle Powder 7760 9.5 11.4 83 9.4 11.2 84
Powder River Pass 9480 6.3 10.5 60 11.8 14.6 81
Soldier Park 8680 1.1 6.2 18 8.1 10.8 75
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Basin Index (%) 64 84
TONGUE RIVER
Big Goose 8010 7.8 8.4 93 11.2 11.4 98
Bone Springs Div 9340 17.2 17.8 97 12.7 17.4 73
Burgess Junction 7900 12.5 11.8 106 13.3 13.9 96
Dome Lake 8890 10.8 12.1 89 11.0 14.8 74
Little Goose 8560 9.4 10.4 90 13.5 14.0 96
Sucker Creek 8840 11.6 12.6 92 15.7 15.8 99
Tie Creek 7050 4.8 4.0 120 13.2 13.2 100
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Basin Index (%) 96 90
BELLE FOURCHE
Blind Park 6900 .1 3.6 3 10.1 12.7 80
Cole Canyon 5930 .5 2.0 25 10.3 10.2 101
North Rapid Creek 6150 .0 3.8 0 8.4 10.5 80
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Basin Index (%) 6 86
CHEYENNE RIVER BASIN
Blind Park 6900 .1 3.6 3 10.1 12.7 80
North Rapid Creek 6150 .0 3.8 0 8.4 10.5 80
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Basin Index (%) 1 80
UPPER N. PLATTE
Arapaho Ridge 10960 20.6 23.9 86 21.8 24.0 91
Blackhall Mtn 9830 30.7 32.9 93 33.3 32.0 104
Cinnabar Park 9670 15.7 19.4 81 23.3 24.7 94
Columbine 9170 17.4 20.8 84 28.1 27.2 103
Divide Peak 8700 13.1 18.0 73 21.0 23.3 90
Joe Wright 10140 22.5 22.4 100 29.9 28.8 104
Laprele Creek 8370 5.2 6.8 76 11.2 13.2 85
Med Bow 10500 40.6 -M * 36.2 -M *
Never Summer 10300 21.3 21.9 97 18.1 18.8 96
North French Creek 10150 33.1 31.6 105 31.9 30.2 106
Old Battle 9850 30.2 34.2 88 30.8 36.0 86
Rawah 9100 6.9 9.4 73 15.4 17.6 88
Sage Creek Basin 7830 .4 5.4 7 12.8 13.8 93
Sand Lake 10080 29.3 30.6 96 29.1 27.1 107
South Brush Creek 8480 6.0 8.4 71 13.0 15.1 86
Tower 10610 43.5 45.3 96 44.5 43.2 103
Webber Springs 9250 17.0 21.6 79 24.3 27.6 88
Whiskey Park 8950 26.0 26.6 98 30.4 30.1 101
Willow Creek Pass 9520 14.2 14.9 95 14.4 15.2 95
Zirkel 9320 18.3 24.7 74 31.9 33.2 96
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Basin Index (%) 89 97
SWEETWATER
Deer Park 9690 17.0 15.8 108 21.4 20.4 105
Larsen Creek 8880 2.1 7.2 29 13.7 15.1 91
South Pass 9040 14.2 15.1 94 18.7 17.4 107
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Basin Index (%) 87 102
LOWER N. PLATTE
Casper Mtn. 7940 8.4 13.7 61 12.8 15.8 81
Laprele Creek 8370 5.2 6.8 76 11.2 13.2 85
Reno Hill 8410 12.2 13.6 90 16.1 17.2 94
Windy Peak 7900 4.1 7.3 56 8.5 11.8 72
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Basin Index (%) 72 84
LARAMIE RIVER
Brooklyn Lake 10250 22.5 23.2 97 26.0 24.0 108
Cinnabar Park 9670 15.7 19.4 81 23.3 24.7 94
Crow Creek 8320 .0 2.2 0 9.2 11.9 77
Deadman Hill 10240 17.9 18.6 96 19.1 20.0 96
Rawah 9100 6.9 9.4 73 15.4 17.6 88
Roach 9710 12.2 16.8 73 18.4 20.8 88
Windy Peak 7900 4.1 7.3 56 8.5 11.8 72
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Basin Index (%) 82 92
S. PLATTE
Crow Creek 8320 .0 2.2 0 9.2 11.9 77
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Basin Index (%) 0 77
LITTLE SNAKE RIVER
Battle Mountain 7460 .0 4.2 0 16.5 16.4 101
Divide Peak 8700 13.1 18.0 73 21.0 23.3 90
Elk River 8710 10.3 14.6 71 21.2 21.0 101
Elkhead Divide 8780 12.5 -M * 20.6 -M *
Little Snake River 8930 21.2 23.7 89 32.6 34.4 95
Old Battle 9850 30.2 34.2 88 30.8 36.0 86
Sage Creek Basin 7830 .4 5.4 7 12.8 13.8 93
Sandstone RS 8150 6.9 9.6 72 15.8 19.0 83
Whiskey Park 8950 26.0 26.6 98 30.4 30.1 101
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Basin Index (%) 79 93
UPPER GREEN RIVER
Big Sandy Opening 9100 12.1 12.8 95 13.5 14.0 96
Blind Bull Sum 8880 27.2 25.0 109 19.7 19.1 103
East Rim Divide 8010 5.6 9.3 60 13.1 11.8 111
Elkhart Park G.S. 9410 11.6 12.9 90 14.6 13.5 108
Gros Ventre Summit 8760 12.4 13.1 95 14.4 13.6 106
Gunsight Pass 9830 13.2 13.2 100 14.9 15.0 99
Indian Creek 9400 25.4 24.2 105 24.2 20.8 116
Kendall R.S. 7790 9.6 7.7 125 16.0 14.0 114
Larsen Creek 8880 2.1 7.2 29 13.7 15.1 91
Loomis Park 8240 12.8 13.0 98 18.8 17.4 108
New Fork Lake 8380 6.7 8.4 80 -M 11.4 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 10.2 10.2 100 17.2 14.6 118
Spring Creek Divide 9020 28.1 25.6 110 26.6 24.8 107
Triple Peak 8520 25.1 20.6 122 28.7 27.1 106
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Basin Index (%) 99 107
LOWER GREEN RIVER
Blacks Fork Jct 8880 7.0 6.4 109 14.2 13.4 106
Buck Pasture 9620 10.2 -M * 19.8 -M *
EF Blacks Fork GS 9360 5.7 10.0 57 13.4 12.6 106
Hams Fork 7870 4.3 6.8 63 14.1 11.6 122
Henrys Fork 10180 -M -M * 13.8 -M *
Hewinta 9510 5.3 7.3 73 15.3 15.2 101
Hickerson Park 9130 .0 4.8 0 10.4 11.6 90
Hole-in-Rock 9170 .2 5.6 4 11.0 11.3 97
Indian Creek 9400 25.4 24.2 105 24.2 20.8 116
Kelley R.S. 8240 14.5 13.8 105 19.1 17.6 109
Spirit Lk 10240 10.8 13.2 82 15.6 19.3 81
Steel Creek Park 10140 15.8 16.2 98 18.3 17.8 103
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Basin Index (%) 82 103
UPPER BEAR RIVER
Bear River RS 8510 .0 1.5 0 13.7 13.0 105
Bug Lake 7980 13.4 16.7 80 20.4 18.9 108
Burts Miller Ranch 7900 .0 .0 * 12.8 8.7 147
Chalk Creek #1 9160 17.6 22.2 79 24.3 24.4 100
Giveout 6940 .4 1.9 21 13.6 13.4 101
Hayden Fork 9160 6.4 11.2 57 22.3 21.9 102
Kelley R.S. 8240 14.5 13.8 105 19.1 17.6 109
Lily Lake 9130 7.5 10.8 69 15.8 16.4 96
Monte Cristo 8930 22.0 25.8 85 25.9 27.0 96
Salt River Summit 7630 11.8 11.0 107 14.7 17.2 85
Spring Creek Divide 9020 28.1 25.6 110 26.6 24.8 107
Trial Lake 9970 23.2 22.0 105 25.7 23.4 110
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Basin Index (%) 89 104
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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.
