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 THURSDAY: MAY 23 , 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 .0 .0 * 24.4 25.1 97
Blind Bull Sum 8650 23.4 20.2 116 19.9 21.8 91
Cottonwood Creek 7670 5.3 5.2 102 31.2 30.4 103
East Rim Divide 7930 -M .0 * 13.5 14.4 94
Grand Targhee 9260 39.1 43.9 89 37.6 38.8 97
Granite Creek 6770 .0 .0 * 20.5 22.8 90
Grassy Lake 7265 12.6 14.0 90 39.1 42.1 93
Gros Ventre Summit 8750 1.4 2.8 50 -M 15.8 *
Gunsight Pass 9820 7.5 8.6 87 18.5 17.6 105
Lewis Lake Divide 7850 16.5 20.0 82 40.2 39.9 101
Loomis Park 8240 .3 .2 150* 18.3 20.8 88
Phillips Bench 8200 19.5 16.6 117 34.4 31.4 110
Salt River Summit 7640 .0 .0 * 16.5 19.2 86
Snake River Station 6920 .1 .0 * 25.7 27.6 93
Somsen Ranch 6800 -M .0 * 24.2 20.2 120
Spring Creek Divide 9000 19.9 19.2 104 26.3 28.2 93
Thumb Divide 7980 1.1 .4 275* 21.2 22.8 93
Togwotee Pass 9580 18.1 23.0 79 25.5 29.9 85
Triple Peak 8500 9.7 8.5 114 30.1 30.8 98
Two Ocean Plateau 9240 26.1 28.6 91 31.5 32.4 97
Willow Creek 8080 15.9 14.2 112 41.3 40.8 101
Younts Peak 8350 .3 4.6 7 19.0 18.8 101
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Basin Index (%) 94 97
MADISON HEADWATERS IN WYOMING
Black Bear 8170 28.6 33.6 85 43.2 44.6 97
Canyon 7870 1.2 -M * 16.3 -M *
Madison Plateau 7750 11.7 13.6 86 26.4 31.1 85
West Yellowstone 6700 -M .0 * 15.6 17.6 89
Whiskey Creek 6800 2.0 3.0 67 22.4 25.3 89
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Basin Index (%) 84 91
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.5 21.2 87 21.2 26.0 82
Canyon 7870 1.2 -M * 16.3 -M *
Evening Star 9200 15.8 21.6 73 31.2 34.4 91
Fisher Creek 9100 24.2 35.2 69 33.1 41.6 80
Monument Peak 8850 13.8 18.0 77 25.1 28.0 90
Northeast Entrance 7350 .1 .0 * 14.9 16.6 90
Parker Peak 9400 18.1 18.6 97 27.5 24.6 112
Sylvan Lake 8420 5.7 11.4 50 27.9 28.9 97
Thumb Divide 7980 1.1 .4 275* 21.2 22.8 93
Two Ocean Plateau 9240 26.1 28.6 91 31.5 32.4 97
White Mill 8700 16.5 22.0 75 23.1 27.8 83
Wolverine 7650 .0 .0 * 16.1 15.8 102
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Basin Index (%) 79 91
WIND RIVER
Burroughs Creek 8750 .2 -M * 14.1 -M *
Castle Creek 8400 .0 .0 * 10.4 12.0 87
Cold Springs 9630 .2 .0 * 15.2 14.1 108
Deer Park 9700 16.3 8.9 183 27.5 24.3 113
Hobbs Park 10100 19.3 12.0 161 24.7 19.6 126
Kirwin 9550 8.1 7.2 112 20.4 17.2 119
Little Warm 9370 1.9 1.4 136 17.9 15.8 113
South Pass 9040 10.7 7.2 149 24.0 20.6 117
St. Lawrence Alt 8620 .0 -M * 15.3 -M *
Togwotee Pass 9580 18.1 23.0 79 25.5 29.9 85
Townsend Creek 8700 5.0 .0 * 20.2 16.7 121
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Basin Index (%) 133 109
BIGHORN BASIN
Bald Mtn. 9380 18.4 17.4 106 19.6 20.8 94
Bear Trap Meadow 8200 .1 .0 * 14.8 13.0 114
Bone Springs Div 9350 16.3 13.2 123 17.6 19.9 88
Grave Springs 8550 1.1 .3 367* 14.7 13.4 110
Kirwin 9550 8.1 7.2 112 20.4 17.2 119
Marquette 8760 13.6 1.6 850 24.1 15.8 153
Middle Powder 7760 8.0 1.2 667* 16.0 14.6 110
Owl Creek 8975 -M .0 * 12.9 10.1 128
Powder River Pass 9480 3.5 4.1 85 17.9 17.9 100
Shell Creek 9580 15.5 14.4 108 19.5 18.4 106
Timber Creek 7950 2.9 .0 * 18.0 13.1 137
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Basin Index (%) 147 112
SHOSHONE RIVER
Blackwater 9780 23.2 22.8 102 28.5 28.7 99
Evening Star 9200 15.8 21.6 73 31.2 34.4 91
Marquette 8760 13.6 1.6 850 24.1 15.8 153
Sylvan Lake 8420 5.7 11.4 50 27.9 28.9 97
Sylvan Road 7120 -M .0 * -M 19.7 *
Younts Peak 8350 .3 4.6 7 19.0 18.8 101
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Basin Index (%) 95 103
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 14.8 13.0 114
Cloud Peak Reservoir 9860 17.1 11.9 144 24.1 20.2 119
Grave Springs 8550 1.1 .3 367* 14.7 13.4 110
Hansen Sawmill 8360 .7 .0 * 15.6 13.4 116
Middle Powder 7760 8.0 1.2 667* 16.0 14.6 110
Powder River Pass 9480 3.5 4.1 85 17.9 17.9 100
Soldier Park 8720 1.4 .0 * 15.9 13.2 120
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Basin Index (%) 182* 113
TONGUE RIVER
Big Goose 7990 5.3 1.7 312 18.6 17.4 107
Bone Springs Div 9350 16.3 13.2 123 17.6 19.9 88
Burgess Junction 7880 7.1 4.4 161 18.8 17.2 109
Dome Lake 8880 -M 4.2 * 20.7 19.8 105
Little Goose 8870 9.8 4.4 223 21.9 18.0 122
Sucker Creek 8880 9.0 6.4 141 23.5 21.4 110
Tie Creek 6870 .7 .0 * 18.4 17.6 105
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Basin Index (%) 160 106
BELLE FOURCHE
Blind Park 6890 .1 .0 * -M 15.2 *
Cole Canyon 5910 .0 .0 * 13.6 14.3 95
North Rapid Creek 6130 -M .0 * -M 13.4 *
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Basin Index (%) * 95*
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * -M 15.2 *
North Rapid Creek 6130 -M .0 * -M 13.4 *
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Basin Index (%) * *
UPPER N. PLATTE
Arapaho Ridge 10976 -M 17.6 * -M 28.4 *
Blackhall Mtn 9839 31.8 29.0 110 43.0 40.0 108
Cinnabar Park 9707 11.4 9.3 123 28.2 29.2 97
Columbine 9167 2.5 .0 * 31.5 31.2 101
Divide Peak 8730 4.8 2.2 218 29.9 26.2 114
Joe Wright 10158 18.6 17.4 107 32.4 34.0 95
Laprele Creek 8390 .1 .0 * 18.2 17.1 106
Med Bow 10512 -M -M * -M -M *
Never Summer 10323 22.3 19.1 117 21.1 22.6 93
North French Creek 10153 26.4 26.6 99 34.9 36.4 96
Old Battle 9860 33.1 31.6 105 41.3 42.0 98
Rawah 9069 2.3 .2 1150* 21.3 20.6 103
Sage Creek Basin 7850 -M .0 * 19.4 16.7 116
Sand Lake 10098 34.0 26.6 128 37.5 32.4 116
South Brush Creek 8495 .2 .0 * 16.7 19.1 87
Tower 10620 43.7 41.0 107 49.2 49.5 99
Webber Springs 9260 14.4 8.4 171 31.7 32.2 98
Whiskey Park 9020 24.4 18.7 130 36.0 36.0 100
Willow Creek Pass 9523 9.8 8.7 113 19.0 18.0 106
Zirkel 9338 5.0 5.6 89 35.6 35.9 99
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Basin Index (%) 117 101
SWEETWATER
Deer Park 9700 16.3 8.9 183 27.5 24.3 113
Larsen Creek 9000 -M .0 * 17.3 17.0 102
South Pass 9040 10.7 7.2 149 24.0 20.6 117
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Basin Index (%) 168 111
LOWER N. PLATTE
Casper Mtn. 7920 5.2 1.2 433* 23.2 19.7 118
Laprele Creek 8390 .1 .0 * 18.2 17.1 106
Reno Hill 8430 8.1 2.4 338 23.0 22.0 105
Windy Peak 7915 .2 .0 * 15.8 14.9 106
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Basin Index (%) 378* 109
LARAMIE RIVER
Brooklyn Lake 10250 17.3 13.4 129 31.9 28.2 113
Cinnabar Park 9707 11.4 9.3 123 28.2 29.2 97
Crow Creek 8335 .0 .0 * 13.3 14.9 89
Deadman Hill 10239 17.7 15.2 116 24.2 24.0 101
Rawah 9069 2.3 .2 1150* 21.3 20.6 103
Roach 9740 6.4 7.8 82 22.3 24.2 92
Windy Peak 7915 .2 .0 * 15.8 14.9 106
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Basin Index (%) 120 101
S. PLATTE
Crow Creek 8335 .0 .0 * 13.3 14.9 89
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Basin Index (%) * 89
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 22.5 19.2 117
Divide Peak 8730 4.8 2.2 218 29.9 26.2 114
Elk River 8739 .2 .0 * 24.3 24.1 101
Elkhead Divide 8800 5.9 -M * 28.5 -M *
Little Snake River 8928 15.4 10.6 145 40.8 39.6 103
Old Battle 9860 33.1 31.6 105 41.3 42.0 98
Sage Creek Basin 7850 -M .0 * 19.4 16.7 116
Sandstone RS 8152 .1 .0 * 22.5 21.8 103
Whiskey Park 9020 24.4 18.7 130 36.0 36.0 100
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Basin Index (%) 124 105
UPPER GREEN RIVER
Big Sandy Opening 9080 3.9 1.2 325* 18.1 16.8 108
Blind Bull Sum 8650 23.4 20.2 116 19.9 21.8 91
East Rim Divide 7930 -M .0 * 13.5 14.4 94
Elkhart Park G.S. 9400 .3 3.3 9 14.6 16.7 87
Gros Ventre Summit 8750 1.4 2.8 50 -M 15.8 *
Gunsight Pass 9820 7.5 8.6 87 18.5 17.6 105
Indian Creek 9425 16.3 16.0 102 24.2 24.8 98
Kendall R.S. 7740 .1 .0 * 15.6 16.2 96
Larsen Creek 9000 -M .0 * 17.3 17.0 102
Loomis Park 8240 .3 .2 150* 18.3 20.8 88
New Fork Lake 8340 -M .0 * -M 14.0 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 16.4 17.0 96
Spring Creek Divide 9000 19.9 19.2 104 26.3 28.2 93
Triple Peak 8500 9.7 8.5 114 30.1 30.8 98
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Basin Index (%) 104 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 17.5 15.4 114
Buck Pasture 9632 6.2 -M * 22.0 -M *
EF Blacks Fork GS 9360 1.6 .0 * 14.7 16.5 89
Hams Fork 7840 -M .0 * 14.2 14.5 98
Henrys Fork 10182 -M -M * 18.3 -M *
Hewinta 9500 -M .0 * 19.1 17.2 111
Hickerson Park 9122 -M .0 * 17.0 13.5 126
Hole-in-Rock 9168 -M .0 * 14.7 13.5 109
Indian Creek 9425 16.3 16.0 102 24.2 24.8 98
Kelley R.S. 8180 1.2 .8 150* 21.1 21.2 100
Spirit Lk 10235 6.3 1.3 485* 23.7 20.5 116
Steel Creek Park 10158 14.8 12.2 121 23.2 21.0 110
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Basin Index (%) 134* 106
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 17.5 14.8 118
Bug Lake 7987 2.1 1.5 140* 26.4 21.0 126
Burts Miller Ranch 8000 .3 .0 * 14.6 9.7 151
Chalk Creek #1 9171 11.2 9.5 118 30.1 29.3 103
Giveout 6930 -M .0 * 15.2 16.2 94
Hayden Fork 9130 .0 .0 * 28.1 24.8 113
Kelley R.S. 8180 1.2 .8 150* 21.1 21.2 100
Lily Lake 9133 .7 .0 * 19.5 20.7 94
Monte Cristo 8932 17.8 13.2 135 34.4 29.8 115
Salt River Summit 7640 .0 .0 * 16.5 19.2 86
Spring Creek Divide 9000 19.9 19.2 104 26.3 28.2 93
Trial Lake 9992 20.9 12.4 169 31.8 27.1 117
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Basin Index (%) 131* 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.