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 MONDAY: MAY 5 , 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 8.9 8.6 103 22.5 22.8 99
Blind Bull Sum 8880 28.0 24.4 115 20.4 19.6 104
Cottonwood Creek 7710 16.6 16.0 104 31.0 28.4 109
East Rim Divide 8010 .0 5.4 0 13.9 12.6 110
Grand Targhee 9260 41.6 46.3 90 33.6 36.2 93
Granite Creek 6770 6.8 8.8 77 20.0 21.0 95
Grassy Lake 7330 21.8 26.6 82 37.1 38.6 96
Gros Ventre Summit 8760 9.4 11.2 84 15.4 14.8 104
Gunsight Pass 9830 12.8 12.4 103 16.3 16.4 99
Lewis Lake Divide 7880 23.8 29.3 81 38.2 37.0 103
Loomis Park 8240 8.4 10.9 77 19.5 18.7 104
Phillips Bench 8160 21.5 26.3 82 29.1 28.8 101
Salt River Summit 7630 5.5 7.2 76 15.4 18.0 86
Snake River Station 6900 4.8 7.0 69 24.0 24.8 97
Somsen Ranch 6830 .0 .0 * 18.0 18.2 99
Spring Creek Divide 9020 26.9 25.0 108 27.5 25.5 108
Thumb Divide 7970 -M 11.0 * -M 21.4 *
Togwotee Pass 9590 23.0 25.4 91 27.8 27.3 102
Triple Peak 8520 20.4 18.6 110 29.8 28.7 104
Two Ocean Plateau 9240 31.3 32.4 97 27.7 30.0 92
Willow Creek 8060 26.3 25.8 102 40.3 38.1 106
Younts Peak 8340 6.8 13.8 49 15.9 17.5 91
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Basin Index (%) 90 100
MADISON HEADWATERS IN WYOMING
Black Bear 8160 29.2 40.0 73 37.0 41.2 90
Canyon 7870 8.3 11.2 74 15.4 18.2 85
Madison Plateau 7710 16.1 22.8 71 27.0 28.0 96
West Yellowstone 6680 .0 .0 * 14.1 16.0 88
Whiskey Creek 6790 9.6 12.3 78 22.5 22.8 99
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Basin Index (%) 73 92
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 25.9 23.9 108 23.9 23.3 103
Canyon 7870 8.3 11.2 74 15.4 18.2 85
Evening Star 9040 25.0 26.7 94 31.8 32.0 99
Fisher Creek 9110 32.5 35.8 91 35.3 37.4 94
Monument Peak 8740 18.7 22.0 85 24.7 26.0 95
Northeast Entrance 7420 .1 1.1 9 15.6 14.7 106
Parker Peak 9420 25.9 24.4 106 27.0 22.9 118
Sylvan Lake 8440 12.3 18.7 66 24.9 26.6 94
Thumb Divide 7970 -M 11.0 * -M 21.4 *
Two Ocean Plateau 9240 31.3 32.4 97 27.7 30.0 92
White Mill 8730 27.0 26.6 102 25.4 25.8 98
Wolverine 7650 3.9 2.7 144 17.6 14.0 126
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Basin Index (%) 94 99
WIND RIVER
Burroughs Creek 8760 6.4 -M * 18.4 -M *
Castle Creek 8410 .0 .0 * 9.9 9.9 100
Cold Springs 9640 .3 3.2 9 11.1 11.4 97
Deer Park 9690 15.9 15.0 106 22.6 22.1 102
Hobbs Park 10080 15.3 16.6 92 18.0 16.8 107
Kirwin 9580 11.2 11.4 98 16.6 14.6 114
Little Warm 9370 7.2 8.5 85 15.2 13.6 112
South Pass 9040 12.0 13.6 88 19.6 18.4 107
St. Lawrence Alt 8610 .0 -M * 12.0 -M *
Togwotee Pass 9590 23.0 25.4 91 27.8 27.3 102
Townsend Creek 8720 9.7 8.2 118 16.6 13.7 121
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Basin Index (%) 93 106
BIGHORN BASIN
Bald Mtn. 9360 23.2 20.6 113 19.9 19.0 105
Bear Trap Meadow 8200 .0 .4 0* 9.6 11.4 84
Bone Springs Div 9340 19.8 17.6 112 14.6 18.5 79
Grave Springs 8560 3.6 8.3 43 11.7 12.2 96
Kirwin 9580 11.2 11.4 98 16.6 14.6 114
Marquette 8800 9.4 7.4 127 14.6 12.6 116
Middle Powder 7760 8.7 10.4 84 10.7 12.6 85
Owl Creek 8990 .0 .5 0* 9.7 8.7 111
Powder River Pass 9480 5.7 9.2 62 13.9 15.4 90
Shell Creek 9570 15.4 16.0 96 15.4 16.2 95
Timber Creek 7910 2.3 2.4 96 11.4 10.8 106
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Basin Index (%) 95 97
SHOSHONE RIVER
Blackwater 9840 27.8 25.8 108 26.8 26.2 102
Evening Star 9040 25.0 26.7 94 31.8 32.0 99
Marquette 8800 9.4 7.4 127 14.6 12.6 116
Sylvan Lake 8440 12.3 18.7 66 24.9 26.6 94
Sylvan Road 7140 .0 2.4 0 15.8 18.4 86
Younts Peak 8340 6.8 13.8 49 15.9 17.5 91
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Basin Index (%) 86 97
POWDER RIVER
Bear Trap Meadow 8200 .0 .4 0* 9.6 11.4 84
Cloud Peak Reservoir 9830 12.9 16.2 80 16.5 17.2 96
Grave Springs 8560 3.6 8.3 43 11.7 12.2 96
Hansen Sawmill 8360 2.9 3.0 97 11.0 11.2 98
Middle Powder 7760 8.7 10.4 84 10.7 12.6 85
Powder River Pass 9480 5.7 9.2 62 13.9 15.4 90
Soldier Park 8680 .0 3.0 0 9.5 11.4 83
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Basin Index (%) 67 91
TONGUE RIVER
Big Goose 8010 8.7 8.4 104 13.8 13.7 101
Bone Springs Div 9340 19.8 17.6 112 14.6 18.5 79
Burgess Junction 7900 12.7 10.9 117 15.4 14.8 104
Dome Lake 8890 11.4 11.0 104 -M 16.1 *
Little Goose 8560 10.5 10.5 100 16.8 16.2 104
Sucker Creek 8840 12.9 11.1 116 19.3 17.6 110
Tie Creek 7050 1.5 1.4 107 15.3 14.0 109
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Basin Index (%) 109 100
BELLE FOURCHE
Blind Park 6900 .0 .0 * 11.3 13.6 83
Cole Canyon 5930 .0 .0 * 12.2 12.1 101
North Rapid Creek 6150 -M .0 * 10.2 11.0 93
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Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6900 .0 .0 * 11.3 13.6 83
North Rapid Creek 6150 -M .0 * 10.2 11.0 93
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Basin Index (%) * 87
UPPER N. PLATTE
Arapaho Ridge 10960 17.8 22.6 79 22.4 25.7 87
Blackhall Mtn 9830 26.8 31.8 84 34.0 35.9 95
Cinnabar Park 9670 10.3 18.3 56 23.5 27.5 85
Columbine 9170 7.9 16.8 47 28.7 29.4 98
Divide Peak 8700 6.1 14.3 43 21.5 25.2 85
Joe Wright 10140 20.6 22.5 92 31.0 30.9 100
Laprele Creek 8370 .1 5.1 2 11.7 15.2 77
Med Bow 10500 39.4 -M * 36.7 -M *
Never Summer 10300 21.4 22.6 95 19.2 20.6 93
North French Creek 10150 30.3 32.4 94 32.4 33.0 98
Old Battle 9850 29.2 35.2 83 31.2 39.0 80
Rawah 9100 2.2 6.0 37 16.0 19.6 82
Sage Creek Basin 7830 .0 .0 * 13.1 14.9 88
Sand Lake 10080 28.6 32.0 89 29.9 29.5 101
South Brush Creek 8480 .4 5.6 7 13.5 17.0 79
Tower 10610 41.0 48.0 85 45.4 45.2 100
Webber Springs 9250 12.8 20.6 62 24.8 30.2 82
Whiskey Park 8950 20.0 26.8 75 30.8 33.6 92
Willow Creek Pass 9520 13.0 15.4 84 15.2 16.7 91
Zirkel 9320 7.4 21.5 34 32.4 35.2 92
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Basin Index (%) 74 91
SWEETWATER
Deer Park 9690 15.9 15.0 106 22.6 22.1 102
Larsen Creek 8880 .1 2.1 5 14.0 16.1 87
South Pass 9040 12.0 13.6 88 19.6 18.4 107
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Basin Index (%) 91 99
LOWER N. PLATTE
Casper Mtn. 7940 5.5 11.6 47 14.0 17.8 79
Laprele Creek 8370 .1 5.1 2 11.7 15.2 77
Reno Hill 8410 11.2 13.6 82 17.4 19.0 92
Windy Peak 7900 .1 3.4 3 9.2 13.5 68
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Basin Index (%) 50 80
LARAMIE RIVER
Brooklyn Lake 10250 18.2 22.5 81 26.3 25.5 103
Cinnabar Park 9670 10.3 18.3 56 23.5 27.5 85
Crow Creek 8320 .0 .0 * 9.8 13.2 74
Deadman Hill 10240 13.2 19.4 68 19.6 21.8 90
Rawah 9100 2.2 6.0 37 16.0 19.6 82
Roach 9710 7.0 16.6 42 18.7 22.0 85
Windy Peak 7900 .1 3.4 3 9.2 13.5 68
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Basin Index (%) 59 86
S. PLATTE
Crow Creek 8320 .0 .0 * 9.8 13.2 74
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Basin Index (%) * 74
LITTLE SNAKE RIVER
Battle Mountain 7460 .0 .0 * 16.9 17.8 95
Divide Peak 8700 6.1 14.3 43 21.5 25.2 85
Elk River 8710 2.1 11.5 18 21.6 23.0 94
Elkhead Divide 8780 5.3 -M * 20.9 -M *
Little Snake River 8930 15.2 22.4 68 32.9 37.2 88
Old Battle 9850 29.2 35.2 83 31.2 39.0 80
Sage Creek Basin 7830 .0 .0 * 13.1 14.9 88
Sandstone RS 8150 .2 4.2 5 16.1 20.2 80
Whiskey Park 8950 20.0 26.8 75 30.8 33.6 92
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Basin Index (%) 64 87
UPPER GREEN RIVER
Big Sandy Opening 9100 9.7 9.8 99 14.1 15.0 94
Blind Bull Sum 8880 28.0 24.4 115 20.4 19.6 104
East Rim Divide 8010 .0 5.4 0 13.9 12.6 110
Elkhart Park G.S. 9410 8.8 10.5 84 15.0 13.9 108
Gros Ventre Summit 8760 9.4 11.2 84 15.4 14.8 104
Gunsight Pass 9830 12.8 12.4 103 16.3 16.4 99
Indian Creek 9400 21.8 21.2 103 25.0 21.8 115
Kendall R.S. 7790 2.5 3.0 83 16.5 14.7 112
Larsen Creek 8880 .1 2.1 5 14.0 16.1 87
Loomis Park 8240 8.4 10.9 77 19.5 18.7 104
New Fork Lake 8380 1.7 4.7 36 -M 12.3 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 4.1 6.4 64 17.9 15.2 118
Spring Creek Divide 9020 26.9 25.0 108 27.5 25.5 108
Triple Peak 8520 20.4 18.6 110 29.8 28.7 104
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Basin Index (%) 93 105
LOWER GREEN RIVER
Blacks Fork Jct 8880 .3 1.8 17 14.4 14.4 100
Buck Pasture 9620 4.7 -M * 20.1 -M *
EF Blacks Fork GS 9360 .0 6.6 0 14.0 13.6 103
Hams Fork 7870 -M .4 * 14.7 12.1 121
Henrys Fork 10180 -M -M * 14.0 -M *
Hewinta 9510 .0 4.0 0 15.6 16.2 96
Hickerson Park 9130 .0 2.4 0 10.6 12.4 85
Hole-in-Rock 9170 .0 1.6 0 11.3 12.2 93
Indian Creek 9400 21.8 21.2 103 25.0 21.8 115
Kelley R.S. 8240 9.3 9.8 95 19.9 18.1 110
Spirit Lk 10240 6.6 12.6 52 16.2 19.9 81
Steel Creek Park 10140 13.8 17.4 79 18.6 19.4 96
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Basin Index (%) 67 100
UPPER BEAR RIVER
Bear River RS 8510 .0 .0 * 13.7 13.8 99
Bug Lake 7980 6.4 13.5 47 20.7 19.5 106
Burts Miller Ranch 7900 .1 .0 * 13.0 8.7 149
Chalk Creek #1 9160 11.9 21.7 55 24.8 26.0 95
Giveout 6940 .0 .0 * 14.3 13.8 104
Hayden Fork 9160 .0 8.2 0 22.5 23.5 96
Kelley R.S. 8240 9.3 9.8 95 19.9 18.1 110
Lily Lake 9130 2.0 8.8 23 16.0 18.6 86
Monte Cristo 8930 14.7 22.2 66 26.3 28.1 94
Salt River Summit 7630 5.5 7.2 76 15.4 18.0 86
Spring Creek Divide 9020 26.9 25.0 108 27.5 25.5 108
Trial Lake 9970 17.1 22.0 78 26.0 25.0 104
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Basin Index (%) 68 101
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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.
