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 MONDAY: APRIL 27 , 2026
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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 5.1 11.9 43 25.9 22.1 117
Blind Bull Sum 8880 25.5 24.8 103 17.3 19.2 90
Cottonwood Creek 7710 10.7 19.4 55 28.6 27.4 104
East Rim Divide 8010 .0 8.2 0 12.8 12.1 106
Grand Targhee 9260 -M 47.6 * -M 35.8 *
Granite Creek 6770 .9 11.0 8 22.5 20.3 111
Grassy Lake 7330 13.4 31.0 43 35.7 37.8 94
Gros Ventre Summit 8760 5.0 12.7 39 16.6 14.1 118
Gunsight Pass 9820 6.9 13.4 51 17.6 15.7 112
Lewis Lake Divide 7880 25.1 31.2 80 43.3 36.0 120
Loomis Park 8240 1.1 11.6 9 18.0 17.6 102
Phillips Bench 8170 18.0 27.5 65 30.5 28.2 108
Salt River Summit 7630 .0 9.7 0 17.5 17.4 101
Snake River Station 6900 .6 13.0 5 23.7 24.0 99
Somsen Ranch 6830 .0 4.1 0 18.9 17.8 106
Spring Creek Divide 9020 23.8 25.2 94 27.0 25.2 107
Thumb Divide 7970 8.0 15.3 52 23.2 20.5 113
Togwotee Pass 9590 21.4 25.2 85 31.2 26.6 117
Triple Peak 8520 13.1 19.9 66 29.8 27.2 110
Two Ocean Plateau 9240 35.4 32.6 109 35.8 28.8 124
Willow Creek 8060 15.2 28.1 54 36.3 36.5 99
Younts Peak 8340 2.2 14.8 15 23.5 16.6 142
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Basin Index (%) 59 109
MADISON HEADWATERS IN WYOMING
Black Bear 8160 29.7 40.4 74 39.0 39.6 98
Canyon 7870 6.4 12.9 50 17.6 17.3 102
Madison Plateau 7710 16.3 23.1 71 29.6 27.1 109
West Yellowstone 6680 .0 3.6 0 17.2 15.5 111
Whiskey Creek 6790 6.6 14.8 45 25.0 22.2 113
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Basin Index (%) 62 106
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 28.8 24.0 120 29.5 22.4 132
Canyon 7870 6.4 12.9 50 17.6 17.3 102
Evening Star 9030 27.4 26.9 102 37.8 30.8 123
Fisher Creek 9110 39.8 35.8 111 41.4 36.0 115
Monument Peak 8740 21.0 22.4 94 29.3 24.4 120
Northeast Entrance 7420 .1 4.5 2 18.3 14.1 130
Parker Peak 9420 22.1 23.2 95 29.1 22.0 132
Sylvan Lake 8440 12.0 20.6 58 28.1 25.9 108
Thumb Divide 7970 8.0 15.3 52 23.2 20.5 113
Two Ocean Plateau 9240 35.4 32.6 109 35.8 28.8 124
White Mill 8730 28.1 25.9 108 29.5 25.0 118
Wolverine 7660 .0 5.2 0 17.7 13.4 132
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Basin Index (%) 92 120
WIND RIVER
Burroughs Creek 8760 .0 -M * 20.0 -M *
Castle Creek 8410 .0 1.8 0 9.2 9.4 98
Cold Springs 9640 .4 5.7 7 13.6 11.0 124
Deer Park 9690 7.9 15.6 51 19.5 20.9 93
Hobbs Park 10080 10.8 16.2 67 16.8 15.8 106
Kirwin 9580 10.1 12.1 83 20.5 14.0 146
Little Warm 9370 4.6 9.7 47 16.4 13.0 126
South Pass 9040 5.8 15.1 38 16.4 18.0 91
St. Lawrence Alt 8610 -M -M * -M -M *
Togwotee Pass 9590 21.4 25.2 85 31.2 26.6 117
Townsend Creek 8720 .2 9.4 2 11.7 13.2 89
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Basin Index (%) 55 109
BIGHORN BASIN
Bald Mtn. 9360 19.4 20.5 95 18.5 18.0 103
Bear Trap Meadow 8200 .6 3.3 18 11.0 10.6 104
Bone Springs Div 9340 14.0 17.4 80 13.5 17.8 76
Grave Springs 8560 -M 8.6 * 10.1 11.8 86
Kirwin 9580 10.1 12.1 83 20.5 14.0 146
Marquette 8800 .8 8.0 10 8.3 11.6 72
Middle Powder 7760 -M 12.2 * 12.0 11.9 101
Owl Creek 8990 1.3 2.2 59 7.1 8.0 89
Powder River Pass 9480 1.4 10.7 13 16.8 15.2 111
Shell Creek 9570 15.5 16.5 94 16.8 15.5 108
Timber Creek 7910 .5 3.6 14 3.5 9.6 36
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Basin Index (%) 67 96
SHOSHONE RIVER
Blackwater 9830 25.0 25.3 99 29.7 24.6 121
Evening Star 9030 27.4 26.9 102 37.8 30.8 123
Marquette 8800 .8 8.0 10 8.3 11.6 72
Sylvan Lake 8440 12.0 20.6 58 28.1 25.9 108
Sylvan Road 7140 .5 7.1 7 21.1 17.9 118
Younts Peak 8340 2.2 14.8 15 23.5 16.6 142
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Basin Index (%) 66 117
POWDER RIVER
Bear Trap Meadow 8200 .6 3.3 18 11.0 10.6 104
Cloud Peak Reservoir 9830 7.6 16.0 48 16.1 16.3 99
Grave Springs 8560 -M 8.6 * 10.1 11.8 86
Hanson Sawmill 8360 1.0 4.6 22 11.2 10.2 110
Middle Powder 7760 -M 12.2 * 12.0 11.9 101
Powder River Pass 9480 1.4 10.7 13 16.8 15.2 111
Soldier Park 8680 1.3 6.0 22 9.2 11.1 83
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Basin Index (%) 29 99
TONGUE RIVER
Big Goose 8010 .0 8.9 0 12.0 12.4 97
Bone Springs Div 9340 14.0 17.4 80 13.5 17.8 76
Burgess Junction 7910 6.8 12.1 56 13.5 14.3 94
Dome Lake 8890 6.1 11.1 55 15.5 15.6 99
Little Goose 8560 1.8 11.1 16 14.6 15.4 95
Sucker Creek 8840 4.7 13.2 36 16.4 16.7 98
Tie Creek 7050 .4 2.7 15 11.8 13.5 87
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Basin Index (%) 44 92
BELLE FOURCHE
Blind Park 6900 .3 2.6 12 13.1 13.1 100
Cole Canyon 5930 .0 .6 0 11.2 10.8 104
North Rapid Creek 6150 .0 2.0 0 10.2 10.7 95
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Basin Index (%) 6 100
CHEYENNE RIVER BASIN
Blind Park 6900 .3 2.6 12 13.1 13.1 100
North Rapid Creek 6150 .0 2.0 0 10.2 10.7 95
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Basin Index (%) 7 98
UPPER N. PLATTE
Arapaho Ridge 10960 7.9 23.8 33 18.0 25.0 72
Blackhall Mtn 9830 9.8 32.2 30 23.8 33.4 71
Cinnabar Park 9670 1.0 20.1 5 18.7 25.8 72
Columbine 9170 .1 20.1 0 21.5 28.6 75
Divide Peak 8700 .6 17.1 4 17.8 24.3 73
Joe Wright 10140 2.3 22.8 10 21.2 29.6 72
Laprele Creek 8370 .5 7.2 7 11.5 14.2 81
Med Bow 10500 25.4 -M * 29.4 -M *
Never Summer 10300 12.2 22.1 55 12.3 19.2 64
North French Creek 10150 15.9 31.7 50 25.8 31.8 81
Old Battle 9840 22.2 35.6 62 30.6 37.0 83
Rawah 9100 .1 8.3 1 12.2 18.6 66
Sage Creek Basin 7830 .3 1.5 20 11.9 14.4 83
Sand Lake 10080 19.7 31.2 63 22.6 28.6 79
South Brush Creek 8480 .4 8.0 5 10.1 15.6 65
Tower 10610 23.6 46.7 51 34.6 45.0 77
Webber Springs 9250 5.0 22.4 22 22.4 28.5 79
Whiskey Park 8950 11.7 27.0 43 27.2 31.5 86
Willow Creek Pass 9520 6.8 15.0 45 11.8 15.7 75
Zirkel 9320 .4 24.4 2 27.4 34.4 80
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Basin Index (%) 34 76
SWEETWATER
Deer Park 9690 7.9 15.6 51 19.5 20.9 93
Larsen Creek 8880 .7 5.6 12 12.8 15.6 82
South Pass 9040 5.8 15.1 38 16.4 18.0 91
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Basin Index (%) 40 89
LOWER N. PLATTE
Casper Mtn. 7940 .5 13.6 4 11.3 17.3 65
Laprele Creek 8370 .5 7.2 7 11.5 14.2 81
Reno Hill 8410 1.1 14.0 8 13.7 18.0 76
Windy Peak 7890 .2 5.4 4 9.0 12.4 73
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Basin Index (%) 6 74
LARAMIE RIVER
Brooklyn Lake 10250 4.4 23.3 19 20.9 24.8 84
Cinnabar Park 9670 1.0 20.1 5 18.7 25.8 72
Crow Creek 8320 .1 .0 * 7.6 12.3 62
Deadman Hill 10240 3.1 19.4 16 12.8 20.8 62
Rawah 9100 .1 8.3 1 12.2 18.6 66
Roach 9710 .6 16.4 4 14.2 21.2 67
Windy Peak 7890 .2 5.4 4 9.0 12.4 73
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Basin Index (%) 10 70
S. PLATTE
Crow Creek 8320 .1 .0 * 7.6 12.3 62
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Basin Index (%) * 62
LITTLE SNAKE RIVER
Battle Mountain 7460 .3 1.6 19 15.1 17.2 88
Divide Peak 8700 .6 17.1 4 17.8 24.3 73
Elk River 8710 .4 13.6 3 18.4 21.8 84
Elkhead Divide 8780 1.2 -M * -M -M *
Little Snake River 8930 2.5 24.3 10 28.6 36.2 79
Old Battle 9840 22.2 35.6 62 30.6 37.0 83
Sage Creek Basin 7830 .3 1.5 20 11.9 14.4 83
Sandstone RS 8150 .1 7.4 1 15.4 19.2 80
Whiskey Park 8950 11.7 27.0 43 27.2 31.5 86
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Basin Index (%) 30 82
UPPER GREEN RIVER
Big Sandy Opening 9100 -M 12.4 * -M 14.8 *
Blind Bull Sum 8880 25.5 24.8 103 17.3 19.2 90
East Rim Divide 8010 .0 8.2 0 12.8 12.1 106
Elkhart Park G.S. 9410 .4 11.9 3 13.8 13.8 100
Gros Ventre Summit 8760 5.0 12.7 39 16.6 14.1 118
Gunsight Pass 9820 6.9 13.4 51 17.6 15.7 112
Indian Creek 9400 15.0 23.2 65 22.6 20.9 108
Kendall R.S. 7790 .2 6.2 3 17.9 14.0 128
Larsen Creek 8880 .7 5.6 12 12.8 15.6 82
Loomis Park 8240 1.1 11.6 9 18.0 17.6 102
New Fork Lake 8380 .1 7.1 1 13.7 11.6 118
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 .0 8.8 0 15.8 14.8 107
Spring Creek Divide 9020 23.8 25.2 94 27.0 25.2 107
Triple Peak 8520 13.1 19.9 66 29.8 27.2 110
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Basin Index (%) 51 106
LOWER GREEN RIVER
Blacks Fork Jct 8880 .6 5.2 12 11.4 14.0 81
Buck Pasture 9630 -M -M * 16.1 -M *
EF Blacks Fork GS 9360 .1 8.4 1 10.9 13.2 83
Hams Fork 7860 -M 5.4 * 13.2 11.8 112
Henrys Fork 10180 -M -M * 11.5 -M *
Hewinta 9510 .0 6.6 0 12.2 15.5 79
Hickerson Park 9120 .1 4.8 2 8.4 11.9 71
Hole-in-Rock 9170 .0 4.2 0 9.0 11.6 78
Indian Creek 9400 15.0 23.2 65 22.6 20.9 108
Kelley R.S. 8240 4.3 12.6 34 19.1 17.8 107
Spirit Lk 10240 1.5 13.0 12 15.8 19.4 81
Steel Creek Park 10140 8.7 16.8 52 15.1 18.2 83
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Basin Index (%) 32 89
UPPER BEAR RIVER
Bear River RS 8510 .0 1.2 0 11.5 13.8 83
Bug Lake 7980 .0 15.6 0 21.9 19.2 114
Burts Miller Ranch 7900 .1 .0 * 11.3 8.7 130
Chalk Creek #1 9160 6.7 21.6 31 22.4 25.2 89
Giveout 6940 .0 .0 * 15.5 13.6 114
Hayden Fork 9170 .0 10.2 0 20.0 22.4 89
Kelley R.S. 8240 4.3 12.6 34 19.1 17.8 107
Lily Lake 9130 .0 10.2 0 13.5 17.4 78
Monte Cristo 8930 11.2 26.2 43 28.0 27.8 101
Salt River Summit 7630 .0 9.7 0 17.5 17.4 101
Spring Creek Divide 9020 23.8 25.2 94 27.0 25.2 107
Trial Lake 9970 11.2 22.9 49 22.5 24.4 92
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Basin Index (%) 37 99
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.
