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 FRIDAY: MAY 31 , 2024
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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 7060 -M .0 * 24.8 25.4 98
Blind Bull Sum 8650 22.0 16.6 133 20.4 23.2 88
Cottonwood Creek 7670 .1 .0 * 32.2 32.0 101
East Rim Divide 7930 -M .0 * 13.8 15.0 92
Grand Targhee 9260 38.8 38.6 101 38.6 40.2 96
Granite Creek 6770 -M .0 * 21.1 24.0 88
Grassy Lake 7265 7.4 7.0 106 40.2 43.1 93
Gros Ventre Summit 8750 -M .0 * -M 16.1 *
Gunsight Pass 9820 3.3 5.5 60 18.7 18.2 103
Lewis Lake Divide 7850 11.7 12.4 94 41.3 41.0 101
Loomis Park 8240 .1 .0 * 18.4 21.8 84
Phillips Bench 8200 15.5 10.0 155 35.0 31.7 110
Salt River Summit 7640 -M .0 * 16.9 20.6 82
Snake River Station 6920 .0 .0 * 26.3 28.4 93
Somsen Ranch 6800 -M .0 * 24.5 21.0 117
Spring Creek Divide 9000 15.7 14.1 111 26.7 29.6 90
Thumb Divide 7980 .2 .0 * 21.8 23.3 94
Togwotee Pass 9580 15.7 19.2 82 26.4 31.0 85
Triple Peak 8500 4.0 1.1 364* 30.8 32.2 96
Two Ocean Plateau 9240 25.6 26.4 97 32.4 33.2 98
Willow Creek 8080 10.8 6.0 180 42.3 41.9 101
Younts Peak 8350 .0 .2 0* 19.3 20.2 96
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Basin Index (%) 109* 96
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.2 27.4 99 44.6 45.6 98
Canyon 7870 .1 -M * 16.9 -M *
Madison Plateau 7750 7.8 8.8 89 27.6 32.0 86
West Yellowstone 6700 -M .0 * 15.9 18.2 87
Whiskey Creek 6800 .0 .0 * 23.2 26.2 89
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Basin Index (%) 97 91
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.1 19.4 98 23.3 27.1 86
Canyon 7870 .1 -M * 16.9 -M *
Evening Star 9200 14.6 19.2 76 32.9 36.2 91
Fisher Creek 9100 24.0 30.3 79 35.2 42.2 83
Monument Peak 8850 11.8 14.4 82 26.6 28.3 94
Northeast Entrance 7350 .0 .0 * 16.2 17.4 93
Parker Peak 9400 17.1 14.4 119 29.0 25.4 114
Sylvan Lake 8420 4.1 6.2 66 29.8 29.9 100
Thumb Divide 7980 .2 .0 * 21.8 23.3 94
Two Ocean Plateau 9240 25.6 26.4 97 32.4 33.2 98
White Mill 8700 16.6 18.0 92 25.0 28.9 87
Wolverine 7650 .0 .0 * 16.8 16.4 102
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Basin Index (%) 90 94
WIND RIVER
Burroughs Creek 8750 .0 -M * 14.4 -M *
Castle Creek 8400 -M .0 * 10.4 13.4 78
Cold Springs 9630 .0 .0 * 15.2 16.0 95
Deer Park 9700 10.6 4.5 236 27.6 24.8 111
Hobbs Park 10100 15.6 6.1 256 24.8 20.4 122
Kirwin 9550 1.5 1.6 94 20.7 18.4 112
Little Warm 9370 .0 .0 * 18.1 16.8 108
South Pass 9040 3.9 .6 650* 24.0 21.2 113
St. Lawrence Alt 8620 -M -M * 15.4 -M *
Togwotee Pass 9580 15.7 19.2 82 26.4 31.0 85
Townsend Creek 8700 -M .0 * 20.1 18.0 112
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Basin Index (%) 148* 104
BIGHORN BASIN
Bald Mtn. 9380 17.2 14.0 123 20.6 22.2 93
Bear Trap Meadow 8200 -M .0 * 15.8 14.1 112
Bone Springs Div 9350 14.9 9.0 166 18.5 21.1 88
Grave Springs 8550 -M .0 * 15.1 14.7 103
Kirwin 9550 1.5 1.6 94 20.7 18.4 112
Marquette 8760 9.1 .0 * 24.2 17.6 138
Middle Powder 7760 2.2 .0 * 16.3 16.0 102
Owl Creek 8975 -M .0 * 12.8 11.4 112
Powder River Pass 9480 .5 .0 * 19.4 18.8 103
Shell Creek 9580 13.8 8.2 168 20.4 19.4 105
Timber Creek 7950 -M .0 * 17.9 14.0 128
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Basin Index (%) 180* 107
SHOSHONE RIVER
Blackwater 9780 22.4 20.8 108 29.7 30.2 98
Evening Star 9200 14.6 19.2 76 32.9 36.2 91
Marquette 8760 9.1 .0 * 24.2 17.6 138
Sylvan Lake 8420 4.1 6.2 66 29.8 29.9 100
Sylvan Road 7120 -M .0 * 18.9 21.1 90
Younts Peak 8350 .0 .2 0* 19.3 20.2 96
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Basin Index (%) 108 100
POWDER RIVER
Bear Trap Meadow 8200 -M .0 * 15.8 14.1 112
Cloud Peak Reservoir 9860 14.6 6.2 235 24.8 22.0 113
Grave Springs 8550 -M .0 * 15.1 14.7 103
Hansen Sawmill 8360 -M .0 * 15.5 14.9 104
Middle Powder 7760 2.2 .0 * 16.3 16.0 102
Powder River Pass 9480 .5 .0 * 19.4 18.8 103
Soldier Park 8720 .0 .0 * 16.2 15.8 103
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Basin Index (%) 279* 106
TONGUE RIVER
Big Goose 7990 .8 .0 * 19.1 19.2 99
Bone Springs Div 9350 14.9 9.0 166 18.5 21.1 88
Burgess Junction 7880 4.4 .0 * 19.8 18.1 109
Dome Lake 8880 -M .1 * 22.1 20.7 107
Little Goose 8870 5.9 1.8 328 22.5 21.0 107
Sucker Creek 8880 6.2 .8 775* 24.7 21.8 113
Tie Creek 6870 .0 .0 * 19.3 19.0 102
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Basin Index (%) 278* 104
BELLE FOURCHE
Blind Park 6890 .1 .0 * 13.5 16.4 82
Cole Canyon 5910 .0 .0 * 13.9 15.8 88
North Rapid Creek 6130 -M .0 * 14.0 14.8 95
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Basin Index (%) * 88
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 13.5 16.4 82
North Rapid Creek 6130 -M .0 * 14.0 14.8 95
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Basin Index (%) * 88
UPPER N. PLATTE
Arapaho Ridge 10976 -M 11.7 * -M 28.6 *
Blackhall Mtn 9839 25.8 25.9 100 43.8 41.2 106
Cinnabar Park 9707 4.5 3.2 141 28.6 29.4 97
Columbine 9167 -M .0 * 32.1 31.8 101
Divide Peak 8730 -M .0 * 31.1 26.8 116
Joe Wright 10158 15.2 14.0 109 33.1 34.6 96
Laprele Creek 8390 .0 .0 * 18.2 17.8 102
Med Bow 10512 -M -M * -M -M *
Never Summer 10323 20.0 17.1 117 21.8 23.6 92
North French Creek 10153 23.0 20.8 111 36.1 36.9 98
Old Battle 9860 30.5 26.2 116 42.8 42.7 100
Rawah 9069 .0 .0 * 21.3 21.1 101
Sage Creek Basin 7850 -M .0 * 20.2 16.9 120
Sand Lake 10098 30.3 23.4 129 38.2 33.2 115
South Brush Creek 8495 .0 .0 * 17.5 19.8 88
Tower 10620 41.1 34.9 118 50.4 50.3 100
Webber Springs 9260 8.8 1.0 880* 32.7 32.6 100
Whiskey Park 9020 13.1 7.8 168 36.8 36.2 102
Willow Creek Pass 9523 3.0 1.9 158 19.3 18.4 105
Zirkel 9338 .1 .0 * 36.5 36.4 100
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Basin Index (%) 122 102
SWEETWATER
Deer Park 9700 10.6 4.5 236 27.6 24.8 111
Larsen Creek 9000 -M .0 * 17.5 17.2 102
South Pass 9040 3.9 .6 650* 24.0 21.2 113
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Basin Index (%) 284* 109
LOWER N. PLATTE
Casper Mtn. 7920 -M .0 * 23.3 21.0 111
Laprele Creek 8390 .0 .0 * 18.2 17.8 102
Reno Hill 8430 1.0 .0 * 22.9 23.0 100
Windy Peak 7915 .1 .0 * 15.5 16.5 94
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Basin Index (%) * 102
LARAMIE RIVER
Brooklyn Lake 10250 11.9 6.0 198 32.6 28.8 113
Cinnabar Park 9707 4.5 3.2 141 28.6 29.4 97
Crow Creek 8335 .0 .0 * 13.3 16.0 83
Deadman Hill 10239 12.5 8.8 142 24.6 24.2 102
Rawah 9069 .0 .0 * 21.3 21.1 101
Roach 9740 .5 1.6 31* 22.5 24.8 91
Windy Peak 7915 .1 .0 * 15.5 16.5 94
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Basin Index (%) 151* 99
S. PLATTE
Crow Creek 8335 .0 .0 * 13.3 16.0 83
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Basin Index (%) * 83
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 23.5 19.8 119
Divide Peak 8730 -M .0 * 31.1 26.8 116
Elk River 8739 .0 .0 * 24.6 24.4 101
Elkhead Divide 8800 .0 -M * 28.9 -M *
Little Snake River 8928 9.9 2.6 381* 42.1 40.8 103
Old Battle 9860 30.5 26.2 116 42.8 42.7 100
Sage Creek Basin 7850 -M .0 * 20.2 16.9 120
Sandstone RS 8152 .0 .0 * 23.7 22.0 108
Whiskey Park 9020 13.1 7.8 168 36.8 36.2 102
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Basin Index (%) 146* 107
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .0 * 18.1 17.4 104
Blind Bull Sum 8650 22.0 16.6 133 20.4 23.2 88
East Rim Divide 7930 -M .0 * 13.8 15.0 92
Elkhart Park G.S. 9400 -M .0 * 15.2 17.4 87
Gros Ventre Summit 8750 -M .0 * -M 16.1 *
Gunsight Pass 9820 3.3 5.5 60 18.7 18.2 103
Indian Creek 9425 11.0 12.2 90 24.6 26.0 95
Kendall R.S. 7740 -M .0 * 15.9 17.3 92
Larsen Creek 9000 -M .0 * 17.5 17.2 102
Loomis Park 8240 .1 .0 * 18.4 21.8 84
New Fork Lake 8340 -M .0 * -M 15.3 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 16.4 18.0 91
Spring Creek Divide 9000 15.7 14.1 111 26.7 29.6 90
Triple Peak 8500 4.0 1.1 364* 30.8 32.2 96
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Basin Index (%) 113* 93
LOWER GREEN RIVER
Blacks Fork Jct 8869 .2 .0 * 18.1 15.7 115
Buck Pasture 9632 .8 -M * 22.9 -M *
EF Blacks Fork GS 9360 -M .0 * 16.7 16.8 99
Hams Fork 7840 -M .0 * 14.6 14.8 99
Henrys Fork 10182 -M -M * 18.6 -M *
Hewinta 9500 -M .0 * 19.6 18.0 109
Hickerson Park 9122 -M .0 * 17.3 14.4 120
Hole-in-Rock 9168 -M .0 * 14.8 14.0 106
Indian Creek 9425 11.0 12.2 90 24.6 26.0 95
Kelley R.S. 8180 -M .0 * 21.4 22.3 96
Spirit Lk 10235 .3 .0 * 23.8 20.6 116
Steel Creek Park 10158 11.1 8.5 131 23.7 21.5 110
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Basin Index (%) 109* 106
UPPER BEAR RIVER
Bear River RS 8777 -M .0 * 18.0 15.2 118
Bug Lake 7987 .0 .0 * 26.8 21.8 123
Burts Miller Ranch 8000 .1 .0 * 14.9 9.9 151
Chalk Creek #1 9171 4.9 3.0 163 30.7 29.8 103
Giveout 6930 -M .0 * 15.5 16.8 92
Hayden Fork 9130 -M .0 * 28.6 25.8 111
Kelley R.S. 8180 -M .0 * 21.4 22.3 96
Lily Lake 9133 .0 .0 * 20.2 21.2 95
Monte Cristo 8932 11.5 5.2 221 34.9 30.8 113
Salt River Summit 7640 -M .0 * 16.9 20.6 82
Spring Creek Divide 9000 15.7 14.1 111 26.7 29.6 90
Trial Lake 9992 16.4 5.2 315 32.8 27.8 118
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Basin Index (%) 177* 106
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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.