Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
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: MAY 28 , 2025
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7040 .0 .0 * 25.1 25.2 100
Blind Bull Sum 8880 -M 18.1 * 21.7 22.8 95
Cottonwood Creek 7710 .6 1.8 33* 34.0 31.7 107
East Rim Divide 8010 .0 .0 * 14.9 14.8 101
Grand Targhee 9260 36.6 41.4 88 37.1 40.2 92
Granite Creek 6770 .0 .0 * 21.9 23.2 94
Grassy Lake 7330 4.9 8.8 56 40.4 42.8 94
Gros Ventre Summit 8760 .0 .4 0* 16.3 16.0 102
Gunsight Pass 9830 4.3 8.1 53 17.6 18.0 98
Lewis Lake Divide 7880 7.4 16.0 46 40.7 40.8 100
Loomis Park 8240 .0 .0 * 20.4 21.5 95
Phillips Bench 8160 7.6 11.8 64 32.1 31.6 102
Salt River Summit 7630 .0 .0 * 16.5 20.3 81
Snake River Station 6900 .0 .0 * 26.4 28.4 93
Somsen Ranch 6830 .0 .0 * 19.6 21.0 93
Spring Creek Divide 9020 17.4 17.7 98 29.0 29.2 99
Thumb Divide 7970 -M .0 * -M 23.0 *
Togwotee Pass 9590 14.0 21.4 65 30.1 30.8 98
Triple Peak 8520 4.9 4.8 102 31.6 31.9 99
Two Ocean Plateau 9240 20.5 28.6 72 31.3 33.1 95
Willow Creek 8060 10.4 9.4 111 44.4 41.4 107
Younts Peak 8340 .0 1.8 0 17.8 19.8 90
----- -----
Basin Index (%) 75 97
MADISON HEADWATERS IN WYOMING
Black Bear 8160 18.0 30.0 60 40.9 45.4 90
Canyon 7870 .2 .0 * 16.6 20.2 82
Madison Plateau 7710 3.5 11.2 31 30.0 31.4 96
West Yellowstone 6680 .0 .0 * 16.3 18.0 91
Whiskey Creek 6790 .1 .2 50* 24.4 26.0 94
----- -----
Basin Index (%) 53* 91
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.5 20.4 100 26.0 26.8 97
Canyon 7870 .2 .0 * 16.6 20.2 82
Evening Star 9040 15.8 22.4 71 34.7 35.6 97
Fisher Creek 9110 24.6 32.4 76 36.8 41.9 88
Monument Peak 8740 7.3 16.0 46 26.2 28.1 93
Northeast Entrance 7420 .0 .0 * 16.9 17.0 99
Parker Peak 9420 15.7 16.8 93 30.2 25.0 121
Sylvan Lake 8440 .6 9.6 6 28.4 29.8 95
Thumb Divide 7970 -M .0 * -M 23.0 *
Two Ocean Plateau 9240 20.5 28.6 72 31.3 33.1 95
White Mill 8730 17.0 20.2 84 26.9 28.6 94
Wolverine 7650 .0 .0 * 19.7 16.0 123
----- -----
Basin Index (%) 73 97
WIND RIVER
Burroughs Creek 8760 .0 -M * 19.5 -M *
Castle Creek 8410 .0 .0 * 10.8 12.9 84
Cold Springs 9640 .0 .0 * 12.3 15.0 82
Deer Park 9690 3.9 6.7 58 24.2 24.8 98
Hobbs Park 10080 7.9 9.2 86 19.7 20.2 98
Kirwin 9580 .0 4.3 0 18.5 17.8 104
Little Warm 9370 .0 .0 * 16.2 16.2 100
South Pass 9040 .0 3.0 0 21.2 21.1 100
St. Lawrence Alt 8610 .0 -M * 13.3 -M *
Togwotee Pass 9590 14.0 21.4 65 30.1 30.8 98
Townsend Creek 8720 .0 .0 * 18.7 18.0 104
----- -----
Basin Index (%) 58 97
BIGHORN BASIN
Bald Mtn. 9360 19.6 15.8 124 23.5 21.4 110
Bear Trap Meadow 8200 .0 .0 * 13.4 13.4 100
Bone Springs Div 9340 11.9 11.0 108 17.3 20.4 85
Grave Springs 8560 .1 .0 * 13.8 14.4 96
Kirwin 9580 .0 4.3 0 18.5 17.8 104
Marquette 8800 .6 .4 150* 17.5 16.4 107
Middle Powder 7760 .0 .0 * 13.7 15.3 90
Owl Creek 8990 .0 .0 * 12.0 11.2 107
Powder River Pass 9480 .0 .6 0* 17.6 18.2 97
Shell Creek 9570 11.2 11.2 100 18.1 19.2 94
Timber Creek 7910 .1 .0 * 13.9 13.8 101
----- -----
Basin Index (%) 100* 99
SHOSHONE RIVER
Blackwater 9840 -M 22.7 * 29.4 29.5 100
Evening Star 9040 15.8 22.4 71 34.7 35.6 97
Marquette 8800 .6 .4 150* 17.5 16.4 107
Sylvan Lake 8440 .6 9.6 6 28.4 29.8 95
Sylvan Road 7140 .0 .0 * 18.0 20.9 86
Younts Peak 8340 .0 1.8 0 17.8 19.8 90
----- -----
Basin Index (%) 50 96
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 13.4 13.4 100
Cloud Peak Reservoir 9830 8.1 9.8 83 20.7 21.6 96
Grave Springs 8560 .1 .0 * 13.8 14.4 96
Hansen Sawmill 8360 .1 .0 * 13.7 14.8 93
Middle Powder 7760 .0 .0 * 13.7 15.3 90
Powder River Pass 9480 .0 .6 0* 17.6 18.2 97
Soldier Park 8680 .1 .2 50* 12.4 15.4 81
----- -----
Basin Index (%) 79* 93
TONGUE RIVER
Big Goose 8010 .1 .0 * 17.2 19.0 91
Bone Springs Div 9340 11.9 11.0 108 17.3 20.4 85
Burgess Junction 7900 4.2 1.6 262 19.0 17.9 106
Dome Lake 8890 .8 .4 200* -M 20.6 *
Little Goose 8560 2.3 3.9 59 20.9 20.2 103
Sucker Creek 8840 7.3 2.8 261 24.1 21.6 112
Tie Creek 7050 .0 .0 * 19.0 18.8 101
----- -----
Basin Index (%) 135 100
BELLE FOURCHE
Blind Park 6900 .1 .0 * 14.5 15.8 92
Cole Canyon 5930 .0 .0 * 15.6 14.8 105
North Rapid Creek 6150 -M .0 * 13.3 13.9 96
----- -----
Basin Index (%) * 98
CHEYENNE RIVER BASIN
Blind Park 6900 .1 .0 * 14.5 15.8 92
North Rapid Creek 6150 -M .0 * 13.3 13.9 96
----- -----
Basin Index (%) * 94
UPPER N. PLATTE
Arapaho Ridge 10960 10.6 13.4 79 24.5 28.6 86
Blackhall Mtn 9830 10.2 28.3 36 35.5 41.0 87
Cinnabar Park 9670 1.5 6.4 23 26.4 29.4 90
Columbine 9170 .0 .0 * 30.5 31.7 96
Divide Peak 8700 .0 .0 * 22.9 26.8 85
Joe Wright 10140 13.4 15.0 89 33.9 34.5 98
Laprele Creek 8370 .1 .0 * 13.9 17.6 79
Med Bow 10500 32.2 -M * 39.9 -M *
Never Summer 10300 15.8 17.6 90 22.0 23.4 94
North French Creek 10150 22.5 24.0 94 35.8 36.9 97
Old Battle 9850 20.4 28.6 71 33.3 42.3 79
Rawah 9100 .0 .0 * 17.0 20.9 81
Sage Creek Basin 7830 .0 .0 * 14.1 16.9 83
Sand Lake 10080 25.7 25.0 103 33.2 32.7 102
South Brush Creek 8480 .3 .0 * 14.9 19.7 76
Tower 10610 30.0 38.8 77 48.6 50.2 97
Webber Springs 9250 .1 4.4 2 26.6 32.2 83
Whiskey Park 8950 4.5 12.2 37 32.4 36.0 90
Willow Creek Pass 9520 .6 4.6 13 16.5 18.2 91
Zirkel 9320 .0 .0 * 34.3 36.4 94
----- -----
Basin Index (%) 71 90
SWEETWATER
Deer Park 9690 3.9 6.7 58 24.2 24.8 98
Larsen Creek 8880 .0 .0 * 15.2 17.2 88
South Pass 9040 .0 3.0 0 21.2 21.1 100
----- -----
Basin Index (%) 40 96
LOWER N. PLATTE
Casper Mtn. 7940 .0 .0 * 15.9 20.6 77
Laprele Creek 8370 .1 .0 * 13.9 17.6 79
Reno Hill 8410 .1 .0 * 19.5 22.6 86
Windy Peak 7900 .1 .0 * 11.2 16.2 69
----- -----
Basin Index (%) * 79
LARAMIE RIVER
Brooklyn Lake 10250 9.3 10.0 93 30.3 28.6 106
Cinnabar Park 9670 1.5 6.4 23 26.4 29.4 90
Crow Creek 8320 .0 .0 * 12.4 15.6 79
Deadman Hill 10240 4.2 11.5 37 23.0 24.2 95
Rawah 9100 .0 .0 * 17.0 20.9 81
Roach 9710 .1 3.6 3 20.5 24.5 84
Windy Peak 7900 .1 .0 * 11.2 16.2 69
----- -----
Basin Index (%) 48 88
S. PLATTE
Crow Creek 8320 .0 .0 * 12.4 15.6 79
----- -----
Basin Index (%) * 79
LITTLE SNAKE RIVER
Battle Mountain 7460 .0 .0 * 17.9 19.8 90
Divide Peak 8700 .0 .0 * 22.9 26.8 85
Elk River 8710 .0 .0 * 22.9 24.4 94
Elkhead Divide 8780 .0 -M * 21.6 -M *
Little Snake River 8930 .0 5.8 0 34.7 40.3 86
Old Battle 9850 20.4 28.6 71 33.3 42.3 79
Sage Creek Basin 7830 .0 .0 * 14.1 16.9 83
Sandstone RS 8150 .1 .0 * 17.1 22.0 78
Whiskey Park 8950 4.5 12.2 37 32.4 36.0 90
----- -----
Basin Index (%) 54* 85
UPPER GREEN RIVER
Big Sandy Opening 9100 .0 .0 * 15.7 17.2 91
Blind Bull Sum 8880 -M 18.1 * 21.7 22.8 95
East Rim Divide 8010 .0 .0 * 14.9 14.8 101
Elkhart Park G.S. 9410 .0 .0 * 15.9 17.4 91
Gros Ventre Summit 8760 .0 .4 0* 16.3 16.0 102
Gunsight Pass 9830 4.3 8.1 53 17.6 18.0 98
Indian Creek 9400 10.6 14.0 76 26.7 25.7 104
Kendall R.S. 7790 .1 .0 * 17.4 16.9 103
Larsen Creek 8880 .0 .0 * 15.2 17.2 88
Loomis Park 8240 .0 .0 * 20.4 21.5 95
New Fork Lake 8380 .0 .0 * -M 14.8 *
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 .0 .0 * 18.8 17.8 106
Spring Creek Divide 9020 17.4 17.7 98 29.0 29.2 99
Triple Peak 8520 4.9 4.8 102 31.6 31.9 99
----- -----
Basin Index (%) 83* 98
LOWER GREEN RIVER
Blacks Fork Jct 8880 .0 .0 * 15.3 15.5 99
Buck Pasture 9620 .0 -M * 22.1 -M *
EF Blacks Fork GS 9360 .0 .0 * 16.5 16.8 98
Hams Fork 7870 -M .0 * 15.8 14.8 107
Henrys Fork 10180 -M -M * 15.2 -M *
Hewinta 9510 .0 .0 * 16.9 17.6 96
Hickerson Park 9130 .0 .0 * 11.8 14.4 82
Hole-in-Rock 9170 .0 .0 * 12.4 13.9 89
Indian Creek 9400 10.6 14.0 76 26.7 25.7 104
Kelley R.S. 8240 .0 .0 * 21.5 22.1 97
Spirit Lk 10240 .0 .5 0* 17.6 20.6 85
Steel Creek Park 10140 5.2 10.8 48 20.2 21.0 96
----- -----
Basin Index (%) 62* 96
UPPER BEAR RIVER
Bear River RS 8510 .0 .0 * 14.8 15.0 99
Bug Lake 7980 .0 .0 * 22.0 21.8 101
Burts Miller Ranch 7900 .0 .0 * 14.5 9.8 148
Chalk Creek #1 9160 .0 5.0 0 26.8 29.8 90
Giveout 6940 -M .0 * -M 16.8 *
Hayden Fork 9160 .0 .0 * 24.0 25.5 94
Kelley R.S. 8240 .0 .0 * 21.5 22.1 97
Lily Lake 9130 .0 .0 * 17.2 21.1 82
Monte Cristo 8930 .2 7.4 3 28.3 30.6 92
Salt River Summit 7630 .0 .0 * 16.5 20.3 81
Spring Creek Divide 9020 17.4 17.7 98 29.0 29.2 99
Trial Lake 9970 1.9 7.4 26 27.5 27.6 100
----- -----
Basin Index (%) 52* 96
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.
