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 25 , 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 12.8 12.6 102 21.4 22.0 97
Blind Bull Sum 8880 28.0 25.0 112 20.2 19.2 105
Cottonwood Creek 7710 21.9 19.2 114 30.4 27.0 113
East Rim Divide 8010 5.6 9.0 62 13.6 11.9 114
Grand Targhee 9260 40.9 47.1 87 30.9 35.6 87
Granite Creek 6770 13.0 11.6 112 19.4 20.0 97
Grassy Lake 7330 27.0 30.4 89 35.8 37.7 95
Gros Ventre Summit 8760 12.5 13.1 95 14.9 13.7 109
Gunsight Pass 9830 13.9 13.2 105 15.7 15.4 102
Lewis Lake Divide 7880 28.8 31.6 91 36.8 35.6 103
Loomis Park 8240 13.0 12.4 105 19.3 17.4 111
Phillips Bench 8160 24.7 27.0 91 28.0 28.0 100
Salt River Summit 7630 11.5 10.6 108 14.9 17.4 86
Snake River Station 6900 12.5 13.2 95 22.8 23.8 96
Somsen Ranch 6830 3.7 5.2 71 17.4 17.6 99
Spring Creek Divide 9020 28.5 25.8 110 27.1 24.8 109
Thumb Divide 7970 -M 16.2 * -M 20.0 *
Togwotee Pass 9590 24.8 25.0 99 27.3 26.4 103
Triple Peak 8520 25.1 20.0 126 29.3 27.2 108
Two Ocean Plateau 9240 31.1 32.8 95 25.9 28.7 90
Willow Creek 8060 31.2 28.2 111 39.0 36.2 108
Younts Peak 8340 13.1 15.0 87 15.8 16.4 96
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Basin Index (%) 99 101
MADISON HEADWATERS IN WYOMING
Black Bear 8160 32.8 39.7 83 36.1 39.4 92
Canyon 7870 11.9 13.0 92 14.7 16.9 87
Madison Plateau 7710 21.9 23.2 94 26.5 26.3 101
West Yellowstone 6680 3.3 4.4 75 13.8 15.5 89
Whiskey Creek 6790 14.0 15.2 92 22.1 22.2 100
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Basin Index (%) 88 94
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 24.4 24.0 102 22.7 22.2 102
Canyon 7870 11.9 13.0 92 14.7 16.9 87
Evening Star 9040 27.4 26.8 102 30.4 30.5 100
Fisher Creek 9110 32.1 35.7 90 33.8 35.8 94
Monument Peak 8740 20.1 22.4 90 23.6 24.1 98
Northeast Entrance 7420 5.0 5.4 93 14.6 14.0 104
Parker Peak 9420 26.7 24.0 111 25.5 21.6 118
Sylvan Lake 8440 15.9 20.2 79 23.3 25.2 92
Thumb Divide 7970 -M 16.2 * -M 20.0 *
Two Ocean Plateau 9240 31.1 32.8 95 25.9 28.7 90
White Mill 8730 26.6 25.6 104 24.2 24.6 98
Wolverine 7650 9.6 6.0 160 16.7 13.3 126
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Basin Index (%) 98 99
WIND RIVER
Burroughs Creek 8760 10.4 -M * 18.1 -M *
Castle Creek 8410 2.1 3.0 70 9.7 9.1 107
Cold Springs 9640 4.3 5.7 75 10.9 10.4 105
Deer Park 9690 17.6 15.8 111 22.0 20.7 106
Hobbs Park 10080 15.0 16.0 94 17.0 15.7 108
Kirwin 9580 12.6 11.8 107 15.8 14.0 113
Little Warm 9370 9.8 10.2 96 14.9 13.0 115
South Pass 9040 14.4 15.0 96 19.2 17.7 108
St. Lawrence Alt 8610 .6 -M * 11.3 -M *
Togwotee Pass 9590 24.8 25.0 99 27.3 26.4 103
Townsend Creek 8720 11.4 9.4 121 16.0 13.2 121
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Basin Index (%) 100 109
BIGHORN BASIN
Bald Mtn. 9360 22.0 20.6 107 18.6 17.9 104
Bear Trap Meadow 8200 .6 3.2 19 8.0 10.5 76
Bone Springs Div 9340 17.5 17.8 98 13.2 17.5 75
Grave Springs 8560 6.0 8.2 73 11.1 11.2 99
Kirwin 9580 12.6 11.8 107 15.8 14.0 113
Marquette 8800 9.6 8.0 120 12.9 11.2 115
Middle Powder 7760 9.3 11.4 82 9.6 11.4 84
Owl Creek 8990 1.1 3.0 37 8.9 7.4 120
Powder River Pass 9480 6.3 10.8 58 12.2 14.9 82
Shell Creek 9570 14.4 16.6 87 13.6 15.4 88
Timber Creek 7910 5.5 4.0 138 10.4 9.4 111
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Basin Index (%) 91 95
SHOSHONE RIVER
Blackwater 9840 26.9 25.8 104 25.1 24.5 102
Evening Star 9040 27.4 26.8 102 30.4 30.5 100
Marquette 8800 9.6 8.0 120 12.9 11.2 115
Sylvan Lake 8440 15.9 20.2 79 23.3 25.2 92
Sylvan Road 7140 .0 7.8 0 14.5 17.8 81
Younts Peak 8340 13.1 15.0 87 15.8 16.4 96
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Basin Index (%) 90 97
POWDER RIVER
Bear Trap Meadow 8200 .6 3.2 19 8.0 10.5 76
Cloud Peak Reservoir 9830 11.8 16.0 74 14.2 16.2 88
Grave Springs 8560 6.0 8.2 73 11.1 11.2 99
Hansen Sawmill 8360 4.0 4.9 82 9.2 10.0 92
Middle Powder 7760 9.3 11.4 82 9.6 11.4 84
Powder River Pass 9480 6.3 10.8 58 12.2 14.9 82
Soldier Park 8680 1.5 6.5 23 8.5 10.9 78
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Basin Index (%) 65 86
TONGUE RIVER
Big Goose 8010 8.2 9.2 89 11.6 12.3 94
Bone Springs Div 9340 17.5 17.8 98 13.2 17.5 75
Burgess Junction 7900 12.6 12.1 104 13.7 14.1 97
Dome Lake 8890 11.3 11.9 95 11.0 15.2 72
Little Goose 8560 9.9 11.0 90 14.1 15.0 94
Sucker Creek 8840 11.9 13.0 92 16.1 16.1 100
Tie Creek 7050 5.1 3.5 146 13.6 13.2 103
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Basin Index (%) 97 90
BELLE FOURCHE
Blind Park 6900 .5 3.5 14 10.6 12.8 83
Cole Canyon 5930 .3 .8 38 11.0 10.3 107
North Rapid Creek 6150 .0 3.2 0 9.1 10.7 85
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Basin Index (%) 11 91
CHEYENNE RIVER BASIN
Blind Park 6900 .5 3.5 14 10.6 12.8 83
North Rapid Creek 6150 .0 3.2 0 9.1 10.7 85
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Basin Index (%) 7 84
UPPER N. PLATTE
Arapaho Ridge 10960 20.3 23.8 85 21.8 24.7 88
Blackhall Mtn 9830 30.2 32.8 92 33.3 33.4 100
Cinnabar Park 9670 15.1 20.1 75 23.3 25.5 91
Columbine 9170 16.2 21.0 77 28.2 28.1 100
Divide Peak 8700 12.0 17.2 70 21.0 24.1 87
Joe Wright 10140 22.5 22.6 100 30.0 29.4 102
Laprele Creek 8370 4.5 7.3 62 11.4 13.4 85
Med Bow 10500 40.8 -M * 36.2 -M *
Never Summer 10300 21.3 22.0 97 18.1 19.1 95
North French Creek 10150 32.8 31.6 104 31.9 30.8 104
Old Battle 9850 30.3 35.0 87 30.8 37.0 83
Rawah 9100 6.2 9.0 69 15.4 18.2 85
Sage Creek Basin 7830 .0 3.6 0 12.9 14.4 90
Sand Lake 10080 29.3 31.2 94 29.2 28.0 104
South Brush Creek 8480 4.7 8.4 56 13.1 15.2 86
Tower 10610 43.2 46.7 93 44.5 44.8 99
Webber Springs 9250 16.4 21.8 75 24.3 28.2 86
Whiskey Park 8950 25.3 27.4 92 30.4 31.3 97
Willow Creek Pass 9520 13.9 14.8 94 14.4 15.5 93
Zirkel 9320 16.3 24.2 67 32.0 33.8 95
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Basin Index (%) 86 94
SWEETWATER
Deer Park 9690 17.6 15.8 111 22.0 20.7 106
Larsen Creek 8880 1.9 6.0 32 14.0 15.2 92
South Pass 9040 14.4 15.0 96 19.2 17.7 108
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Basin Index (%) 92 103
LOWER N. PLATTE
Casper Mtn. 7940 8.3 13.4 62 13.0 16.2 80
Laprele Creek 8370 4.5 7.3 62 11.4 13.4 85
Reno Hill 8410 12.2 13.9 88 16.4 17.8 92
Windy Peak 7900 3.4 6.4 53 8.8 12.2 72
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Basin Index (%) 69 83
LARAMIE RIVER
Brooklyn Lake 10250 22.1 23.0 96 26.0 24.4 107
Cinnabar Park 9670 15.1 20.1 75 23.3 25.5 91
Crow Creek 8320 .1 1.2 8 9.5 12.2 78
Deadman Hill 10240 17.1 19.2 89 19.1 20.7 92
Rawah 9100 6.2 9.0 69 15.4 18.2 85
Roach 9710 11.6 16.4 71 18.4 21.0 88
Windy Peak 7900 3.4 6.4 53 8.8 12.2 72
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Basin Index (%) 79 90
S. PLATTE
Crow Creek 8320 .1 1.2 8 9.5 12.2 78
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Basin Index (%) 8 78
LITTLE SNAKE RIVER
Battle Mountain 7460 .0 3.6 0 16.5 16.8 98
Divide Peak 8700 12.0 17.2 70 21.0 24.1 87
Elk River 8710 8.7 14.4 60 21.2 21.8 97
Elkhead Divide 8780 11.1 -M * 20.6 -M *
Little Snake River 8930 20.4 24.2 84 32.6 35.8 91
Old Battle 9850 30.3 35.0 87 30.8 37.0 83
Sage Creek Basin 7830 .0 3.6 0 12.9 14.4 90
Sandstone RS 8150 5.6 8.9 63 15.8 19.2 82
Whiskey Park 8950 25.3 27.4 92 30.4 31.3 97
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Basin Index (%) 76 90
UPPER GREEN RIVER
Big Sandy Opening 9100 12.4 12.6 98 13.8 14.2 97
Blind Bull Sum 8880 28.0 25.0 112 20.2 19.2 105
East Rim Divide 8010 5.6 9.0 62 13.6 11.9 114
Elkhart Park G.S. 9410 11.8 12.2 97 14.8 13.7 108
Gros Ventre Summit 8760 12.5 13.1 95 14.9 13.7 109
Gunsight Pass 9830 13.9 13.2 105 15.7 15.4 102
Indian Creek 9400 25.4 24.0 106 24.6 20.9 118
Kendall R.S. 7790 9.3 6.8 137 16.4 14.0 117
Larsen Creek 8880 1.9 6.0 32 14.0 15.2 92
Loomis Park 8240 13.0 12.4 105 19.3 17.4 111
New Fork Lake 8380 6.9 7.7 90 -M 11.4 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 9.9 9.7 102 17.6 14.7 120
Spring Creek Divide 9020 28.5 25.8 110 27.1 24.8 109
Triple Peak 8520 25.1 20.0 126 29.3 27.2 108
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Basin Index (%) 103 109
LOWER GREEN RIVER
Blacks Fork Jct 8880 5.9 5.8 102 14.2 13.6 104
Buck Pasture 9620 9.7 -M * 19.8 -M *
EF Blacks Fork GS 9360 5.2 9.0 58 13.5 12.8 105
Hams Fork 7870 3.7 5.9 63 14.5 11.6 125
Henrys Fork 10180 -M -M * 14.0 -M *
Hewinta 9510 4.0 7.0 57 15.4 15.3 101
Hickerson Park 9130 .0 4.8 0 10.6 11.9 89
Hole-in-Rock 9170 .0 4.6 0 11.2 11.4 98
Indian Creek 9400 25.4 24.0 106 24.6 20.9 118
Kelley R.S. 8240 14.2 13.4 106 19.5 17.7 110
Spirit Lk 10240 10.5 13.2 80 15.9 19.4 82
Steel Creek Park 10140 15.9 16.6 96 18.4 17.8 103
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Basin Index (%) 81 104
UPPER BEAR RIVER
Bear River RS 8510 .0 1.0 0 13.8 13.1 105
Bug Lake 7980 12.6 16.3 77 20.5 19.2 107
Burts Miller Ranch 7900 .1 .0 * 12.9 8.7 148
Chalk Creek #1 9160 -M 22.2 * -M 24.5 *
Giveout 6940 .0 .7 0* 14.1 13.5 104
Hayden Fork 9160 5.4 10.6 51 22.3 22.1 101
Kelley R.S. 8240 14.2 13.4 106 19.5 17.7 110
Lily Lake 9130 7.3 10.2 72 15.9 16.5 96
Monte Cristo 8930 20.4 25.6 80 25.9 27.4 95
Salt River Summit 7630 11.5 10.6 108 14.9 17.4 86
Spring Creek Divide 9020 28.5 25.8 110 27.1 24.8 109
Trial Lake 9970 22.3 22.4 100 25.7 23.8 108
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Basin Index (%) 90 104
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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.
