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 SUNDAY: MAY 26 , 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 * 24.7 25.2 98
Blind Bull Sum 8650 22.8 19.0 120 20.4 22.4 91
Cottonwood Creek 7670 4.5 3.4 132 31.7 31.0 102
East Rim Divide 7930 -M .0 * 13.8 14.6 95
Grand Targhee 9260 40.3 43.0 94 38.0 39.9 95
Granite Creek 6770 .0 .0 * 20.8 23.0 90
Grassy Lake 7265 12.7 11.3 112 39.9 42.6 94
Gros Ventre Summit 8750 .5 .8 62* -M 16.0 *
Gunsight Pass 9820 7.3 8.6 85 18.7 17.8 105
Lewis Lake Divide 7850 16.0 18.0 89 41.0 40.4 101
Loomis Park 8240 .2 .0 * 18.4 21.1 87
Phillips Bench 8200 19.5 13.6 143 34.9 31.6 110
Salt River Summit 7640 .0 .0 * 16.7 19.6 85
Snake River Station 6920 .0 .0 * 26.2 28.2 93
Somsen Ranch 6800 -M .0 * 24.5 20.5 120
Spring Creek Divide 9000 19.7 18.6 106 26.7 28.7 93
Thumb Divide 7980 .7 .0 * 21.6 23.0 94
Togwotee Pass 9580 18.2 22.1 82 26.1 30.4 86
Triple Peak 8500 9.4 6.2 152 30.6 31.5 97
Two Ocean Plateau 9240 26.7 28.6 93 32.3 32.9 98
Willow Creek 8080 16.1 11.5 140 42.1 41.2 102
Younts Peak 8350 .2 2.8 7 19.2 19.8 97
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Basin Index (%) 104 97
MADISON HEADWATERS IN WYOMING
Black Bear 8170 29.5 32.8 90 44.3 45.3 98
Canyon 7870 .8 -M * 16.7 -M *
Madison Plateau 7750 11.8 12.4 95 27.2 31.2 87
West Yellowstone 6700 -M .0 * 15.9 17.8 89
Whiskey Creek 6800 1.0 1.6 62 23.2 25.8 90
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Basin Index (%) 90 92
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.2 21.0 96 22.8 26.5 86
Canyon 7870 .8 -M * 16.7 -M *
Evening Star 9200 16.2 22.2 73 32.1 35.2 91
Fisher Creek 9100 25.6 34.8 74 34.8 41.9 83
Monument Peak 8850 14.7 16.9 87 26.2 28.0 94
Northeast Entrance 7350 .1 .0 * 15.8 16.8 94
Parker Peak 9400 18.9 18.4 103 28.4 24.8 115
Sylvan Lake 8420 6.8 11.3 60 29.3 29.4 100
Thumb Divide 7980 .7 .0 * 21.6 23.0 94
Two Ocean Plateau 9240 26.7 28.6 93 32.3 32.9 98
White Mill 8700 17.9 20.9 86 24.5 27.8 88
Wolverine 7650 .0 .0 * 16.5 16.0 103
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Basin Index (%) 85 94
WIND RIVER
Burroughs Creek 8750 .2 -M * 14.3 -M *
Castle Creek 8400 .0 .0 * 10.6 12.4 85
Cold Springs 9630 .1 .0 * 15.2 14.8 103
Deer Park 9700 15.7 8.0 196 27.6 24.7 112
Hobbs Park 10100 19.0 11.2 170 24.8 20.0 124
Kirwin 9550 7.1 5.8 122 20.6 17.4 118
Little Warm 9370 .8 .3 267* 18.1 15.8 115
South Pass 9040 9.7 5.4 180 24.1 21.0 115
St. Lawrence Alt 8620 -M -M * 15.3 -M *
Togwotee Pass 9580 18.2 22.1 82 26.1 30.4 86
Townsend Creek 8700 3.0 .0 * 20.2 18.0 112
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Basin Index (%) 139 107
BIGHORN BASIN
Bald Mtn. 9380 19.0 16.9 112 20.3 21.2 96
Bear Trap Meadow 8200 -M .0 * 15.1 13.2 114
Bone Springs Div 9350 17.1 12.5 137 18.2 20.1 91
Grave Springs 8550 .4 .0 * 15.1 13.8 109
Kirwin 9550 7.1 5.8 122 20.6 17.4 118
Marquette 8760 13.0 .8 1625* 24.3 16.4 148
Middle Powder 7760 8.0 .0 * 16.4 15.2 108
Owl Creek 8975 -M .0 * 12.9 10.8 119
Powder River Pass 9480 3.6 2.0 180 18.8 18.2 103
Shell Creek 9580 15.8 13.0 122 20.1 18.9 106
Timber Creek 7950 4.1 .0 * 18.0 13.4 134
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Basin Index (%) 173* 112
SHOSHONE RIVER
Blackwater 9780 23.6 23.3 101 29.1 29.3 99
Evening Star 9200 16.2 22.2 73 32.1 35.2 91
Marquette 8760 13.0 .8 1625* 24.3 16.4 148
Sylvan Lake 8420 6.8 11.3 60 29.3 29.4 100
Sylvan Road 7120 .0 .0 * 18.6 20.2 92
Younts Peak 8350 .2 2.8 7 19.2 19.8 97
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Basin Index (%) 99 102
POWDER RIVER
Bear Trap Meadow 8200 -M .0 * 15.1 13.2 114
Cloud Peak Reservoir 9860 17.3 11.4 152 24.7 21.4 115
Grave Springs 8550 .4 .0 * 15.1 13.8 109
Hansen Sawmill 8360 -M .0 * 15.8 14.2 111
Middle Powder 7760 8.0 .0 * 16.4 15.2 108
Powder River Pass 9480 3.6 2.0 180 18.8 18.2 103
Soldier Park 8720 1.1 1.0 110 16.2 15.0 108
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Basin Index (%) 211* 110
TONGUE RIVER
Big Goose 7990 4.6 .8 575* 18.9 18.6 102
Bone Springs Div 9350 17.1 12.5 137 18.2 20.1 91
Burgess Junction 7880 7.4 3.4 218 19.5 17.8 110
Dome Lake 8880 -M 2.0 * 21.2 20.6 103
Little Goose 8870 9.4 4.7 200 22.3 20.0 112
Sucker Creek 8880 9.1 4.2 217 24.3 21.4 114
Tie Creek 6870 .1 .0 * 19.0 18.2 104
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Basin Index (%) 186 105
BELLE FOURCHE
Blind Park 6890 .1 .0 * 13.2 15.6 85
Cole Canyon 5910 .0 .0 * 13.7 14.6 94
North Rapid Creek 6130 -M .0 * 13.2 13.6 97
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Basin Index (%) * 92
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 13.2 15.6 85
North Rapid Creek 6130 -M .0 * 13.2 13.6 97
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Basin Index (%) * 90
UPPER N. PLATTE
Arapaho Ridge 10976 19.6 15.3 128 28.0 28.6 98
Blackhall Mtn 9839 31.2 28.7 109 43.7 40.6 108
Cinnabar Park 9707 9.5 7.6 125 28.6 29.3 98
Columbine 9167 .0 .0 * 32.0 31.5 102
Divide Peak 8730 4.2 .2 2100* 31.2 26.4 118
Joe Wright 10158 18.1 16.1 112 33.1 34.2 97
Laprele Creek 8390 .1 .0 * 18.2 17.5 104
Med Bow 10512 -M -M * -M -M *
Never Summer 10323 21.9 18.8 116 21.8 23.1 94
North French Creek 10153 26.1 25.6 102 36.0 36.6 98
Old Battle 9860 34.0 30.0 113 42.7 42.2 101
Rawah 9069 .3 .0 * 21.4 20.8 103
Sage Creek Basin 7850 -M .0 * 20.3 16.9 120
Sand Lake 10098 34.0 26.4 129 38.4 32.7 117
South Brush Creek 8495 .3 .0 * 17.5 19.6 89
Tower 10620 43.5 39.9 109 50.2 49.8 101
Webber Springs 9260 13.2 6.7 197 32.6 32.2 101
Whiskey Park 9020 20.2 15.0 135 36.8 36.0 102
Willow Creek Pass 9523 8.0 6.7 119 19.3 18.1 107
Zirkel 9338 3.5 1.0 350* 36.3 36.4 100
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Basin Index (%) 121 103
SWEETWATER
Deer Park 9700 15.7 8.0 196 27.6 24.7 112
Larsen Creek 9000 -M .0 * 17.6 17.2 102
South Pass 9040 9.7 5.4 180 24.1 21.0 115
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Basin Index (%) 190 110
LOWER N. PLATTE
Casper Mtn. 7920 3.1 .2 1550* 23.3 20.0 116
Laprele Creek 8390 .1 .0 * 18.2 17.5 104
Reno Hill 8430 6.4 .4 1600* 23.0 22.4 103
Windy Peak 7915 .2 .0 * 15.8 15.7 101
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Basin Index (%) 1633* 106
LARAMIE RIVER
Brooklyn Lake 10250 16.0 11.6 138 32.5 28.5 114
Cinnabar Park 9707 9.5 7.6 125 28.6 29.3 98
Crow Creek 8335 .0 .0 * 13.3 15.1 88
Deadman Hill 10239 16.3 12.6 129 24.6 24.2 102
Rawah 9069 .3 .0 * 21.4 20.8 103
Roach 9740 4.3 5.6 77 22.5 24.5 92
Windy Peak 7915 .2 .0 * 15.8 15.7 101
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Basin Index (%) 125 100
S. PLATTE
Crow Creek 8335 .0 .0 * 13.3 15.1 88
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Basin Index (%) * 88
LITTLE SNAKE RIVER
Battle Mountain 7498 .1 .0 * 23.6 19.8 119
Divide Peak 8730 4.2 .2 2100* 31.2 26.4 118
Elk River 8739 .4 .0 * 24.7 24.4 101
Elkhead Divide 8800 4.3 -M * 28.9 -M *
Little Snake River 8928 14.5 7.8 186 42.1 40.3 104
Old Battle 9860 34.0 30.0 113 42.7 42.2 101
Sage Creek Basin 7850 -M .0 * 20.3 16.9 120
Sandstone RS 8152 .2 .0 * 23.7 22.0 108
Whiskey Park 9020 20.2 15.0 135 36.8 36.0 102
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Basin Index (%) 139* 108
UPPER GREEN RIVER
Big Sandy Opening 9080 2.7 1.0 270* 18.3 17.2 106
Blind Bull Sum 8650 22.8 19.0 120 20.4 22.4 91
East Rim Divide 7930 -M .0 * 13.8 14.6 95
Elkhart Park G.S. 9400 .2 2.4 8 15.0 17.0 88
Gros Ventre Summit 8750 .5 .8 62* -M 16.0 *
Gunsight Pass 9820 7.3 8.6 85 18.7 17.8 105
Indian Creek 9425 15.7 15.2 103 24.6 25.4 97
Kendall R.S. 7740 .1 .0 * 15.9 16.4 97
Larsen Creek 9000 -M .0 * 17.6 17.2 102
Loomis Park 8240 .2 .0 * 18.4 21.1 87
New Fork Lake 8340 -M .0 * -M 14.4 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 16.5 17.0 97
Spring Creek Divide 9000 19.7 18.6 106 26.7 28.7 93
Triple Peak 8500 9.4 6.2 152 30.6 31.5 97
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Basin Index (%) 109* 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 .2 .0 * 18.1 15.4 118
Buck Pasture 9632 6.1 -M * 22.6 -M *
EF Blacks Fork GS 9360 1.9 .0 * 15.5 16.6 93
Hams Fork 7840 -M .0 * 14.5 14.6 99
Henrys Fork 10182 -M -M * 18.6 -M *
Hewinta 9500 -M .0 * 19.6 17.4 113
Hickerson Park 9122 -M .0 * 17.4 14.0 124
Hole-in-Rock 9168 -M .0 * 14.8 13.9 106
Indian Creek 9425 15.7 15.2 103 24.6 25.4 97
Kelley R.S. 8180 .1 .0 * 21.4 21.9 98
Spirit Lk 10235 4.4 1.4 314* 23.8 20.6 116
Steel Creek Park 10158 14.8 11.5 129 23.8 21.0 113
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Basin Index (%) 132* 107
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 18.2 15.0 121
Bug Lake 7987 .5 .0 * 26.8 21.7 124
Burts Miller Ranch 8000 .2 .0 * 14.9 9.8 152
Chalk Creek #1 9171 10.6 7.4 143 30.7 29.8 103
Giveout 6930 -M .0 * 15.5 16.6 93
Hayden Fork 9130 .0 .0 * 28.7 25.4 113
Kelley R.S. 8180 .1 .0 * 21.4 21.9 98
Lily Lake 9133 .4 .0 * 20.2 21.0 96
Monte Cristo 8932 17.3 9.6 180 34.8 30.4 114
Salt River Summit 7640 .0 .0 * 16.7 19.6 85
Spring Creek Divide 9000 19.7 18.6 106 26.7 28.7 93
Trial Lake 9992 20.6 9.6 215 32.8 27.6 119
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Basin Index (%) 154* 107
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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.