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 THURSDAY: APRIL 30 , 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 10.7 48 26.1 22.4 117
Blind Bull Sum 8880 25.4 24.4 104 17.4 19.2 91
Cottonwood Creek 7710 10.6 17.4 61 28.0 27.8 101
East Rim Divide 8010 .0 6.7 0 12.8 12.4 103
Grand Targhee 9260 -M 46.9 * -M 36.0 *
Granite Creek 6770 .1 9.8 1 22.6 20.8 109
Grassy Lake 7330 13.6 29.6 46 35.9 38.3 94
Gros Ventre Summit 8760 5.1 12.2 42 16.7 14.3 117
Gunsight Pass 9820 7.1 12.9 55 17.7 16.0 111
Lewis Lake Divide 7880 25.2 30.4 83 43.4 36.4 119
Loomis Park 8240 .6 11.8 5 18.1 18.3 99
Phillips Bench 8170 18.0 27.7 65 30.6 28.4 108
Salt River Summit 7630 .0 9.0 0 17.7 17.8 99
Snake River Station 6900 .0 10.0 0 23.9 24.4 98
Somsen Ranch 6830 .0 2.2 0 18.9 17.9 106
Spring Creek Divide 9020 23.9 25.2 95 27.1 25.2 108
Thumb Divide 7970 8.2 13.6 60 23.5 20.6 114
Togwotee Pass 9590 21.8 25.4 86 31.6 26.8 118
Triple Peak 8520 13.2 19.6 67 29.9 27.9 107
Two Ocean Plateau 9240 35.8 33.2 108 36.1 29.2 124
Willow Creek 8060 15.5 27.6 56 36.4 36.6 99
Younts Peak 8340 2.2 14.6 15 23.7 17.1 139
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Basin Index (%) 62 108
MADISON HEADWATERS IN WYOMING
Black Bear 8160 30.2 40.0 76 39.5 40.6 97
Canyon 7870 6.5 12.3 53 17.7 17.6 101
Madison Plateau 7710 16.9 23.0 73 30.1 27.6 109
West Yellowstone 6680 .0 .7 0* 17.4 15.6 112
Whiskey Creek 6790 7.0 14.1 50 25.5 22.4 114
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Basin Index (%) 67 105
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 28.8 24.0 120 29.9 22.6 132
Canyon 7870 6.5 12.3 53 17.7 17.6 101
Evening Star 9030 28.1 27.4 103 38.3 31.1 123
Fisher Creek 9110 40.2 35.5 113 41.8 36.3 115
Monument Peak 8740 21.7 22.2 98 29.9 24.9 120
Northeast Entrance 7420 .1 3.4 3 18.5 14.2 130
Parker Peak 9420 22.9 23.6 97 29.7 22.5 132
Sylvan Lake 8440 12.4 20.4 61 28.5 26.0 110
Thumb Divide 7970 8.2 13.6 60 23.5 20.6 114
Two Ocean Plateau 9240 35.8 33.2 108 36.1 29.2 124
White Mill 8730 28.5 25.8 110 29.8 25.2 118
Wolverine 7660 .0 4.6 0 18.1 13.6 133
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Basin Index (%) 95 120
WIND RIVER
Burroughs Creek 8760 .0 -M * 20.1 -M *
Castle Creek 8410 .0 .2 0* 9.4 9.4 100
Cold Springs 9640 .6 3.8 16 14.1 11.2 126
Deer Park 9690 8.1 15.4 53 19.9 21.6 92
Hobbs Park 10080 11.2 16.4 68 17.2 16.1 107
Kirwin 9580 10.3 11.8 87 20.8 14.2 146
Little Warm 9370 4.8 9.0 53 16.6 13.2 126
South Pass 9040 6.2 14.9 42 17.0 18.2 93
St. Lawrence Alt 8610 -M -M * -M -M *
Togwotee Pass 9590 21.8 25.4 86 31.6 26.8 118
Townsend Creek 8720 .9 8.8 10 12.4 13.4 93
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Basin Index (%) 60 110
BIGHORN BASIN
Bald Mtn. 9360 19.7 21.0 94 18.7 18.3 102
Bear Trap Meadow 8200 .3 2.7 11 11.2 10.7 105
Bone Springs Div 9340 14.4 17.6 82 13.7 18.0 76
Grave Springs 8560 -M 8.2 * 10.4 12.0 87
Kirwin 9580 10.3 11.8 87 20.8 14.2 146
Marquette 8800 .6 8.2 7 8.5 11.9 71
Middle Powder 7760 -M 11.6 * 12.2 12.0 102
Owl Creek 8990 1.8 1.4 129 7.8 8.2 95
Powder River Pass 9480 1.5 10.2 15 16.9 15.2 111
Shell Creek 9570 16.0 16.2 99 17.2 15.8 109
Timber Creek 7910 1.2 3.1 39 3.9 9.6 41
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Basin Index (%) 71 97
SHOSHONE RIVER
Blackwater 9830 25.6 25.4 101 30.3 24.9 122
Evening Star 9030 28.1 27.4 103 38.3 31.1 123
Marquette 8800 .6 8.2 7 8.5 11.9 71
Sylvan Lake 8440 12.4 20.4 61 28.5 26.0 110
Sylvan Road 7140 .0 5.6 0 21.3 18.0 118
Younts Peak 8340 2.2 14.6 15 23.7 17.1 139
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Basin Index (%) 68 117
POWDER RIVER
Bear Trap Meadow 8200 .3 2.7 11 11.2 10.7 105
Cloud Peak Reservoir 9830 8.5 15.4 55 16.5 16.4 101
Grave Springs 8560 -M 8.2 * 10.4 12.0 87
Hanson Sawmill 8360 1.2 4.0 30 11.5 10.8 106
Middle Powder 7760 -M 11.6 * 12.2 12.0 102
Powder River Pass 9480 1.5 10.2 15 16.9 15.2 111
Soldier Park 8680 1.5 4.0 38 9.4 11.3 83
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Basin Index (%) 36 100
TONGUE RIVER
Big Goose 8010 .0 8.6 0 12.2 12.6 97
Bone Springs Div 9340 14.4 17.6 82 13.7 18.0 76
Burgess Junction 7910 6.8 12.2 56 13.7 14.7 93
Dome Lake 8890 6.4 11.1 58 15.7 15.8 99
Little Goose 8560 2.1 10.3 20 14.9 15.6 96
Sucker Creek 8840 4.9 12.4 40 16.7 16.9 99
Tie Creek 7050 .8 2.5 32 12.2 13.6 90
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Basin Index (%) 47 92
BELLE FOURCHE
Blind Park 6900 .2 .2 100* 13.3 13.2 101
Cole Canyon 5930 .0 1.0 0 11.3 11.5 98
North Rapid Creek 6150 .0 .4 0* 10.4 10.7 97
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Basin Index (%) 12* 99
CHEYENNE RIVER BASIN
Blind Park 6900 .2 .2 100* 13.3 13.2 101
North Rapid Creek 6150 .0 .4 0* 10.4 10.7 97
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Basin Index (%) 33* 99
UPPER N. PLATTE
Arapaho Ridge 10960 8.8 23.7 37 18.8 25.0 75
Blackhall Mtn 9830 10.8 31.5 34 25.1 34.7 72
Cinnabar Park 9670 1.2 19.1 6 19.4 26.9 72
Columbine 9170 .0 17.2 0 22.3 28.6 78
Divide Peak 8700 .5 17.3 3 18.5 24.8 75
Joe Wright 10140 3.2 22.1 14 22.0 29.8 74
Laprele Creek 8370 .5 6.4 8 12.2 14.6 84
Med Bow 10500 26.5 -M * 30.6 -M *
Never Summer 10300 13.0 22.2 59 12.6 19.4 65
North French Creek 10150 17.4 32.3 54 27.1 32.4 84
Old Battle 9840 23.3 35.4 66 31.6 38.3 83
Rawah 9100 .4 7.0 6 12.8 19.0 67
Sage Creek Basin 7830 .0 2.1 0 12.2 14.5 84
Sand Lake 10080 20.7 31.1 67 23.5 29.0 81
South Brush Creek 8480 .4 7.0 6 10.9 16.0 68
Tower 10610 25.7 46.2 56 36.3 45.0 81
Webber Springs 9250 5.3 21.7 24 23.0 29.0 79
Whiskey Park 8950 12.8 27.6 46 28.4 31.9 89
Willow Creek Pass 9520 7.7 15.6 49 12.2 15.8 77
Zirkel 9320 .4 23.7 2 28.4 34.6 82
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Basin Index (%) 37 78
SWEETWATER
Deer Park 9690 8.1 15.4 53 19.9 21.6 92
Larsen Creek 8880 .2 3.2 6 12.8 15.8 81
South Pass 9040 6.2 14.9 42 17.0 18.2 93
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Basin Index (%) 43 89
LOWER N. PLATTE
Casper Mtn. 7940 .5 13.0 4 11.6 17.4 67
Laprele Creek 8370 .5 6.4 8 12.2 14.6 84
Reno Hill 8410 1.5 13.3 11 14.3 18.2 79
Windy Peak 7890 .0 4.3 0 9.4 12.4 76
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Basin Index (%) 7 76
LARAMIE RIVER
Brooklyn Lake 10250 4.9 23.4 21 21.7 24.9 87
Cinnabar Park 9670 1.2 19.1 6 19.4 26.9 72
Crow Creek 8320 .8 .5 160* 8.9 12.4 72
Deadman Hill 10240 3.9 20.0 20 13.6 21.2 64
Rawah 9100 .4 7.0 6 12.8 19.0 67
Roach 9710 1.3 15.4 8 15.2 21.6 70
Windy Peak 7890 .0 4.3 0 9.4 12.4 76
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Basin Index (%) 14 73
S. PLATTE
Crow Creek 8320 .8 .5 160* 8.9 12.4 72
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Basin Index (%) 160* 72
LITTLE SNAKE RIVER
Battle Mountain 7460 .0 .7 0* 15.7 17.4 90
Divide Peak 8700 .5 17.3 3 18.5 24.8 75
Elk River 8710 .6 13.2 5 19.4 22.5 86
Elkhead Divide 8780 1.8 -M * -M -M *
Little Snake River 8930 4.0 24.4 16 30.0 36.4 82
Old Battle 9840 23.3 35.4 66 31.6 38.3 83
Sage Creek Basin 7830 .0 2.1 0 12.2 14.5 84
Sandstone RS 8150 .0 6.4 0 16.0 19.9 80
Whiskey Park 8950 12.8 27.6 46 28.4 31.9 89
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Basin Index (%) 32 84
UPPER GREEN RIVER
Big Sandy Opening 9100 8.8 12.0 73 13.6 14.9 91
Blind Bull Sum 8880 25.4 24.4 104 17.4 19.2 91
East Rim Divide 8010 .0 6.7 0 12.8 12.4 103
Elkhart Park G.S. 9410 .3 11.5 3 13.9 13.8 101
Gros Ventre Summit 8760 5.1 12.2 42 16.7 14.3 117
Gunsight Pass 9820 7.1 12.9 55 17.7 16.0 111
Indian Creek 9400 15.5 22.5 69 22.8 21.1 108
Kendall R.S. 7790 .1 4.8 2 18.0 14.4 125
Larsen Creek 8880 .2 3.2 6 12.8 15.8 81
Loomis Park 8240 .6 11.8 5 18.1 18.3 99
New Fork Lake 8380 .0 6.2 0 13.8 11.8 117
Pocket Creek 9370 -M -M * -M -M *
Snider Basin 8080 .0 7.4 0 15.7 15.1 104
Spring Creek Divide 9020 23.9 25.2 95 27.1 25.2 108
Triple Peak 8520 13.2 19.6 67 29.9 27.9 107
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Basin Index (%) 56 104
LOWER GREEN RIVER
Blacks Fork Jct 8880 .6 4.0 15 11.9 14.2 84
Buck Pasture 9630 -M -M * 16.4 -M *
EF Blacks Fork GS 9360 .0 7.9 0 11.2 13.4 84
Hams Fork 7860 -M 3.5 * 13.8 12.0 115
Henrys Fork 10180 -M -M * 11.7 -M *
Hewinta 9510 .0 6.4 0 12.7 15.8 80
Hickerson Park 9120 .1 4.2 2 8.7 12.0 72
Hole-in-Rock 9170 .0 3.0 0 9.3 11.6 80
Indian Creek 9400 15.5 22.5 69 22.8 21.1 108
Kelley R.S. 8240 .2 11.4 2 19.2 17.8 108
Spirit Lk 10240 1.4 11.9 12 16.0 19.4 82
Steel Creek Park 10140 9.0 17.0 53 15.6 18.5 84
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Basin Index (%) 30 91
UPPER BEAR RIVER
Bear River RS 8510 .0 .8 0* 11.9 13.8 86
Bug Lake 7980 .2 14.6 1 22.0 19.4 113
Burts Miller Ranch 7900 .0 .0 * 11.6 8.7 133
Chalk Creek #1 9160 7.1 21.2 33 22.8 25.6 89
Giveout 6940 .0 .0 * 15.6 13.6 115
Hayden Fork 9170 .0 9.5 0 20.3 23.1 88
Kelley R.S. 8240 .2 11.4 2 19.2 17.8 108
Lily Lake 9130 .0 10.2 0 13.9 18.0 77
Monte Cristo 8930 11.6 24.9 47 28.1 28.0 100
Salt River Summit 7630 .0 9.0 0 17.7 17.8 99
Spring Creek Divide 9020 23.9 25.2 95 27.1 25.2 108
Trial Lake 9970 11.9 23.2 51 22.9 24.5 93
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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.
