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: MAY 6 , 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 8.6 8.2 105 23.0 23.1 100
Blind Bull Sum 8880 27.8 24.1 115 20.9 19.6 107
Cottonwood Creek 7710 16.4 15.6 105 31.5 28.5 111
East Rim Divide 8010 .0 4.8 0 14.1 12.8 110
Grand Targhee 9260 41.4 46.4 89 33.8 36.4 93
Granite Creek 6770 6.2 8.3 75 20.8 21.0 99
Grassy Lake 7330 21.5 25.6 84 37.5 38.8 97
Gros Ventre Summit 8760 9.1 11.1 82 15.5 14.8 105
Gunsight Pass 9830 12.2 12.0 102 16.2 16.4 99
Lewis Lake Divide 7880 23.8 29.1 82 38.5 37.0 104
Loomis Park 8240 8.1 10.1 80 19.6 18.9 104
Phillips Bench 8160 21.4 25.6 84 29.7 28.9 103
Salt River Summit 7630 4.9 7.0 70 15.3 18.0 85
Snake River Station 6900 4.7 6.0 78 24.3 24.8 98
Somsen Ranch 6830 .2 .0 * 18.4 18.3 101
Spring Creek Divide 9020 26.7 24.7 108 27.8 25.7 108
Thumb Divide 7970 -M 10.4 * -M 21.4 *
Togwotee Pass 9590 22.7 25.4 89 27.8 28.0 99
Triple Peak 8520 20.2 18.0 112 30.3 29.0 104
Two Ocean Plateau 9240 30.5 32.5 94 27.6 30.2 91
Willow Creek 8060 25.7 25.6 100 40.8 38.6 106
Younts Peak 8340 6.6 13.9 47 15.9 17.5 91
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Basin Index (%) 91 101
MADISON HEADWATERS IN WYOMING
Black Bear 8160 29.8 40.7 73 37.8 41.2 92
Canyon 7870 8.3 10.8 77 15.4 18.4 84
Madison Plateau 7710 16.9 22.8 74 27.9 28.0 100
West Yellowstone 6680 .0 .0 * 14.9 16.1 93
Whiskey Creek 6790 10.1 12.1 83 23.2 22.8 102
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Basin Index (%) 75 94
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 25.8 24.3 106 23.8 23.8 100
Canyon 7870 8.3 10.8 77 15.4 18.4 84
Evening Star 9040 25.0 26.8 93 31.9 32.0 100
Fisher Creek 9110 32.3 35.9 90 35.2 37.7 93
Monument Peak 8740 18.6 21.8 85 25.0 26.1 96
Northeast Entrance 7420 .2 .6 33* 15.7 14.7 107
Parker Peak 9420 25.5 24.0 106 26.9 23.2 116
Sylvan Lake 8440 12.1 18.6 65 24.8 26.8 93
Thumb Divide 7970 -M 10.4 * -M 21.4 *
Two Ocean Plateau 9240 30.5 32.5 94 27.6 30.2 91
White Mill 8730 26.8 26.8 100 25.4 25.8 98
Wolverine 7650 3.7 1.9 195 17.7 14.0 126
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Basin Index (%) 93 99
WIND RIVER
Burroughs Creek 8760 6.3 -M * 18.5 -M *
Castle Creek 8410 .0 .0 * 10.0 10.1 99
Cold Springs 9640 .5 2.8 18 11.4 11.7 97
Deer Park 9690 16.0 14.6 110 22.8 22.1 103
Hobbs Park 10080 15.6 16.4 95 18.4 17.4 106
Kirwin 9580 11.2 11.8 95 16.8 15.0 112
Little Warm 9370 6.9 8.4 82 15.4 14.1 109
South Pass 9040 12.3 13.2 93 20.0 18.4 109
St. Lawrence Alt 8610 .1 -M * 12.5 -M *
Togwotee Pass 9590 22.7 25.4 89 27.8 28.0 99
Townsend Creek 8720 10.2 7.8 131 17.2 14.2 121
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Basin Index (%) 95 106
BIGHORN BASIN
Bald Mtn. 9360 23.7 20.5 116 20.1 19.0 106
Bear Trap Meadow 8200 .5 .6 83* 9.8 11.6 84
Bone Springs Div 9340 19.6 18.0 109 14.6 18.6 78
Grave Springs 8560 3.8 7.8 49 11.9 12.6 94
Kirwin 9580 11.2 11.8 95 16.8 15.0 112
Marquette 8800 9.8 7.4 132 14.9 12.8 116
Middle Powder 7760 9.2 10.8 85 11.3 12.6 90
Owl Creek 8990 .2 .3 67* 9.9 8.8 112
Powder River Pass 9480 5.6 9.2 61 14.2 15.7 90
Shell Creek 9570 15.5 16.4 95 15.4 16.8 92
Timber Creek 7910 2.7 1.8 150 11.7 10.8 108
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Basin Index (%) 97 98
SHOSHONE RIVER
Blackwater 9840 27.4 26.2 105 26.7 26.2 102
Evening Star 9040 25.0 26.8 93 31.9 32.0 100
Marquette 8800 9.8 7.4 132 14.9 12.8 116
Sylvan Lake 8440 12.1 18.6 65 24.8 26.8 93
Sylvan Road 7140 .0 1.2 0 15.6 18.4 85
Younts Peak 8340 6.6 13.9 47 15.9 17.5 91
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Basin Index (%) 86 97
POWDER RIVER
Bear Trap Meadow 8200 .5 .6 83* 9.8 11.6 84
Cloud Peak Reservoir 9830 13.8 16.4 84 17.3 17.7 98
Grave Springs 8560 3.8 7.8 49 11.9 12.6 94
Hansen Sawmill 8360 3.4 2.8 121 12.2 11.2 109
Middle Powder 7760 9.2 10.8 85 11.3 12.6 90
Powder River Pass 9480 5.6 9.2 61 14.2 15.7 90
Soldier Park 8680 .7 2.6 27 10.2 11.6 88
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Basin Index (%) 74 93
TONGUE RIVER
Big Goose 8010 9.3 8.3 112 14.7 13.8 107
Bone Springs Div 9340 19.6 18.0 109 14.6 18.6 78
Burgess Junction 7900 12.9 11.2 115 15.8 14.8 107
Dome Lake 8890 12.0 11.4 105 -M 16.2 *
Little Goose 8560 11.3 10.4 109 17.6 16.2 109
Sucker Creek 8840 13.3 11.2 119 19.2 17.6 109
Tie Creek 7050 1.8 1.4 129 15.4 14.4 107
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Basin Index (%) 112 102
BELLE FOURCHE
Blind Park 6900 .2 .0 * 11.8 13.6 87
Cole Canyon 5930 -M .0 * -M 12.6 *
North Rapid Creek 6150 -M .0 * 10.9 11.2 97
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Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6900 .2 .0 * 11.8 13.6 87
North Rapid Creek 6150 -M .0 * 10.9 11.2 97
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Basin Index (%) * 92
UPPER N. PLATTE
Arapaho Ridge 10960 17.3 22.7 76 22.4 25.7 87
Blackhall Mtn 9830 26.2 32.2 81 34.1 36.3 94
Cinnabar Park 9670 9.7 18.3 53 23.5 27.5 85
Columbine 9170 6.9 16.3 42 28.7 29.6 97
Divide Peak 8700 5.4 13.9 39 21.8 25.2 87
Joe Wright 10140 19.6 22.2 88 31.0 31.0 100
Laprele Creek 8370 .3 4.4 7 12.0 15.4 78
Med Bow 10500 38.6 -M * 36.7 -M *
Never Summer 10300 21.0 22.4 94 19.3 20.6 94
North French Creek 10150 28.6 32.4 88 32.4 33.0 98
Old Battle 9850 28.9 35.3 82 31.3 39.1 80
Rawah 9100 1.4 5.6 25 16.0 19.9 80
Sage Creek Basin 7830 .0 .0 * 13.3 14.9 89
Sand Lake 10080 28.1 32.2 87 29.9 29.9 100
South Brush Creek 8480 .3 4.6 7 13.5 17.0 79
Tower 10610 40.0 47.8 84 45.5 45.2 101
Webber Springs 9250 12.4 20.2 61 25.0 30.2 83
Whiskey Park 8950 20.0 26.8 75 30.9 33.7 92
Willow Creek Pass 9520 12.5 15.0 83 15.3 16.7 92
Zirkel 9320 6.3 21.2 30 32.4 35.2 92
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Basin Index (%) 72 91
SWEETWATER
Deer Park 9690 16.0 14.6 110 22.8 22.1 103
Larsen Creek 8880 .0 1.0 0* 14.0 16.1 87
South Pass 9040 12.3 13.2 93 20.0 18.4 109
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Basin Index (%) 98 100
LOWER N. PLATTE
Casper Mtn. 7940 5.5 11.2 49 14.4 17.9 80
Laprele Creek 8370 .3 4.4 7 12.0 15.4 78
Reno Hill 8410 10.8 13.5 80 17.5 19.9 88
Windy Peak 7900 .3 3.0 10 9.4 13.6 69
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Basin Index (%) 53 80
LARAMIE RIVER
Brooklyn Lake 10250 17.6 22.3 79 26.4 25.6 103
Cinnabar Park 9670 9.7 18.3 53 23.5 27.5 85
Crow Creek 8320 .0 .0 * 10.0 13.3 75
Deadman Hill 10240 12.4 19.3 64 19.8 22.0 90
Rawah 9100 1.4 5.6 25 16.0 19.9 80
Roach 9710 6.3 16.4 38 18.8 22.2 85
Windy Peak 7900 .3 3.0 10 9.4 13.6 69
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Basin Index (%) 56 86
S. PLATTE
Crow Creek 8320 .0 .0 * 10.0 13.3 75
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Basin Index (%) * 75
LITTLE SNAKE RIVER
Battle Mountain 7460 .0 .0 * 17.4 17.8 98
Divide Peak 8700 5.4 13.9 39 21.8 25.2 87
Elk River 8710 1.3 10.8 12 21.9 23.0 95
Elkhead Divide 8780 4.5 -M * 21.0 -M *
Little Snake River 8930 14.0 21.4 65 33.0 37.2 89
Old Battle 9850 28.9 35.3 82 31.3 39.1 80
Sage Creek Basin 7830 .0 .0 * 13.3 14.9 89
Sandstone RS 8150 .2 3.8 5 16.4 20.2 81
Whiskey Park 8950 20.0 26.8 75 30.9 33.7 92
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Basin Index (%) 62 88
UPPER GREEN RIVER
Big Sandy Opening 9100 8.9 9.6 93 14.1 15.0 94
Blind Bull Sum 8880 27.8 24.1 115 20.9 19.6 107
East Rim Divide 8010 .0 4.8 0 14.1 12.8 110
Elkhart Park G.S. 9410 7.8 10.3 76 14.9 14.0 106
Gros Ventre Summit 8760 9.1 11.1 82 15.5 14.8 105
Gunsight Pass 9830 12.2 12.0 102 16.2 16.4 99
Indian Creek 9400 21.7 21.2 102 25.5 21.9 116
Kendall R.S. 7790 2.0 2.2 91 16.5 14.8 111
Larsen Creek 8880 .0 1.0 0* 14.0 16.1 87
Loomis Park 8240 8.1 10.1 80 19.6 18.9 104
New Fork Lake 8380 1.3 4.1 32 -M 12.4 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 3.5 6.2 56 18.0 15.3 118
Spring Creek Divide 9020 26.7 24.7 108 27.8 25.7 108
Triple Peak 8520 20.2 18.0 112 30.3 29.0 104
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Basin Index (%) 94 106
LOWER GREEN RIVER
Blacks Fork Jct 8880 .2 1.0 20 14.6 14.4 101
Buck Pasture 9620 4.8 -M * 20.4 -M *
EF Blacks Fork GS 9360 .0 5.8 0 14.6 13.6 107
Hams Fork 7870 -M .2 * 15.1 12.1 125
Henrys Fork 10180 -M -M * 14.4 -M *
Hewinta 9510 .0 3.5 0 16.0 16.2 99
Hickerson Park 9130 .0 1.7 0 11.0 12.5 88
Hole-in-Rock 9170 .0 .9 0 11.4 12.6 90
Indian Creek 9400 21.7 21.2 102 25.5 21.9 116
Kelley R.S. 8240 9.0 9.2 98 20.2 18.2 111
Spirit Lk 10240 7.0 12.3 57 16.7 19.9 84
Steel Creek Park 10140 14.2 17.2 83 19.1 19.4 98
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Basin Index (%) 72 102
UPPER BEAR RIVER
Bear River RS 8510 .0 .0 * 14.3 13.8 104
Bug Lake 7980 6.0 13.0 46 21.2 19.5 109
Burts Miller Ranch 7900 .0 .0 * 13.8 8.7 159
Chalk Creek #1 9160 12.0 21.2 57 25.6 26.2 98
Giveout 6940 .0 .0 * 14.8 13.8 107
Hayden Fork 9160 .0 7.6 0 23.0 23.5 98
Kelley R.S. 8240 9.0 9.2 98 20.2 18.2 111
Lily Lake 9130 1.9 7.8 24 16.4 18.6 88
Monte Cristo 8930 15.0 21.4 70 27.1 28.1 96
Salt River Summit 7630 4.9 7.0 70 15.3 18.0 85
Spring Creek Divide 9020 26.7 24.7 108 27.8 25.7 108
Trial Lake 9970 17.0 21.6 79 26.3 25.1 105
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Basin Index (%) 69 103
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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.
