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 TUESDAY: MAY 28 , 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 22.1 18.1 122 20.4 22.8 89
Cottonwood Creek 7670 1.6 1.8 89* 31.6 31.7 100
East Rim Divide 7930 -M .0 * 13.9 14.8 94
Grand Targhee 9260 41.6 41.4 100 38.4 40.2 96
Granite Creek 6770 -M .0 * 21.2 23.2 91
Grassy Lake 7265 10.6 8.8 120 39.9 42.8 93
Gros Ventre Summit 8750 -M .4 * -M 16.0 *
Gunsight Pass 9820 6.1 8.1 75 18.7 18.0 104
Lewis Lake Divide 7850 14.5 16.0 91 41.0 40.8 100
Loomis Park 8240 .1 .0 * 18.4 21.5 86
Phillips Bench 8200 17.9 11.8 152 35.0 31.6 111
Salt River Summit 7640 -M .0 * 17.1 20.3 84
Snake River Station 6920 -M .0 * 26.2 28.4 92
Somsen Ranch 6800 -M .0 * 24.5 21.0 117
Spring Creek Divide 9000 18.6 17.7 105 26.7 29.2 91
Thumb Divide 7980 .2 .0 * 21.7 23.0 94
Togwotee Pass 9580 17.2 21.4 80 26.3 30.8 85
Triple Peak 8500 7.8 4.8 162 30.7 31.9 96
Two Ocean Plateau 9240 26.3 28.6 92 32.3 33.1 98
Willow Creek 8080 13.8 9.4 147 42.1 41.4 102
Younts Peak 8350 .1 1.8 6 19.1 19.8 96
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Basin Index (%) 105 96
MADISON HEADWATERS IN WYOMING
Black Bear 8170 29.4 30.0 98 44.5 45.4 98
Canyon 7870 .2 -M * 16.8 -M *
Madison Plateau 7750 10.4 11.2 93 27.6 31.4 88
West Yellowstone 6700 -M .0 * 15.9 18.0 88
Whiskey Creek 6800 .2 .2 100* 23.1 26.0 89
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Basin Index (%) 97 92
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.1 20.4 99 23.1 26.8 86
Canyon 7870 .2 -M * 16.8 -M *
Evening Star 9200 16.0 22.4 71 32.4 35.6 91
Fisher Creek 9100 25.0 32.4 77 35.0 41.9 84
Monument Peak 8850 13.9 16.0 87 26.3 28.1 94
Northeast Entrance 7350 .0 .0 * 16.0 17.0 94
Parker Peak 9400 19.0 16.8 113 28.8 25.0 115
Sylvan Lake 8420 6.2 9.6 65 29.5 29.8 99
Thumb Divide 7980 .2 .0 * 21.7 23.0 94
Two Ocean Plateau 9240 26.3 28.6 92 32.3 33.1 98
White Mill 8700 17.7 20.2 88 24.7 28.6 86
Wolverine 7650 .0 .0 * 16.6 16.0 104
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Basin Index (%) 87 94
WIND RIVER
Burroughs Creek 8750 .0 -M * 14.2 -M *
Castle Creek 8400 -M .0 * 10.4 12.9 81
Cold Springs 9630 .0 .0 * 15.2 15.0 101
Deer Park 9700 13.9 6.7 207 27.6 24.8 111
Hobbs Park 10100 17.5 9.2 190 24.8 20.2 123
Kirwin 9550 5.1 4.3 119 20.6 17.8 116
Little Warm 9370 .0 .0 * 18.1 16.2 112
South Pass 9040 7.3 3.0 243 24.1 21.1 114
St. Lawrence Alt 8620 -M -M * 15.3 -M *
Togwotee Pass 9580 17.2 21.4 80 26.3 30.8 85
Townsend Creek 8700 1.0 .0 * 20.1 18.0 112
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Basin Index (%) 139 106
BIGHORN BASIN
Bald Mtn. 9380 18.9 15.8 120 20.6 21.4 96
Bear Trap Meadow 8200 -M .0 * 15.4 13.4 115
Bone Springs Div 9350 17.0 11.0 155 18.4 20.4 90
Grave Springs 8550 .0 .0 * 15.1 14.4 105
Kirwin 9550 5.1 4.3 119 20.6 17.8 116
Marquette 8760 11.5 .4 2875* 24.2 16.4 148
Middle Powder 7760 5.9 .0 * 16.4 15.3 107
Owl Creek 8975 -M .0 * 12.9 11.2 115
Powder River Pass 9480 3.0 .6 500* 19.1 18.2 105
Shell Creek 9580 15.5 11.2 138 20.2 19.2 105
Timber Creek 7950 5.0 .0 * 17.9 13.8 130
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Basin Index (%) 189* 111
SHOSHONE RIVER
Blackwater 9780 23.7 22.7 104 29.6 29.5 100
Evening Star 9200 16.0 22.4 71 32.4 35.6 91
Marquette 8760 11.5 .4 2875* 24.2 16.4 148
Sylvan Lake 8420 6.2 9.6 65 29.5 29.8 99
Sylvan Road 7120 -M .0 * 18.6 20.9 89
Younts Peak 8350 .1 1.8 6 19.1 19.8 96
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Basin Index (%) 101 101
POWDER RIVER
Bear Trap Meadow 8200 -M .0 * 15.4 13.4 115
Cloud Peak Reservoir 9860 16.6 9.8 169 24.7 21.6 114
Grave Springs 8550 .0 .0 * 15.1 14.4 105
Hansen Sawmill 8360 -M .0 * 15.6 14.8 105
Middle Powder 7760 5.9 .0 * 16.4 15.3 107
Powder River Pass 9480 3.0 .6 500* 19.1 18.2 105
Soldier Park 8720 .2 .2 100* 16.2 15.4 105
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Basin Index (%) 242* 108
TONGUE RIVER
Big Goose 7990 3.2 .0 * 18.9 19.0 99
Bone Springs Div 9350 17.0 11.0 155 18.4 20.4 90
Burgess Junction 7880 6.5 1.6 406 19.6 17.9 109
Dome Lake 8880 -M .4 * 21.5 20.6 104
Little Goose 8870 8.3 3.9 213 22.3 20.2 110
Sucker Creek 8880 8.4 2.8 300 24.6 21.6 114
Tie Creek 6870 -M .0 * 19.0 18.8 101
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Basin Index (%) 225 104
BELLE FOURCHE
Blind Park 6890 .2 .0 * 13.3 15.8 84
Cole Canyon 5910 .0 .0 * 13.8 14.8 93
North Rapid Creek 6130 -M .0 * 13.6 13.9 98
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Basin Index (%) * 91
CHEYENNE RIVER BASIN
Blind Park 6890 .2 .0 * 13.3 15.8 84
North Rapid Creek 6130 -M .0 * 13.6 13.9 98
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Basin Index (%) * 91
UPPER N. PLATTE
Arapaho Ridge 10976 19.1 13.4 143 28.1 28.6 98
Blackhall Mtn 9839 29.8 28.3 105 43.7 41.0 107
Cinnabar Park 9707 8.0 6.4 125 28.6 29.4 97
Columbine 9167 -M .0 * 32.2 31.7 102
Divide Peak 8730 1.6 .0 * 31.2 26.8 116
Joe Wright 10158 17.2 15.0 115 33.2 34.5 96
Laprele Creek 8390 .0 .0 * 18.2 17.6 103
Med Bow 10512 -M -M * -M -M *
Never Summer 10323 21.6 17.6 123 21.8 23.4 93
North French Creek 10153 25.7 24.0 107 36.0 36.9 98
Old Battle 9860 33.4 28.6 117 42.8 42.3 101
Rawah 9069 .0 .0 * 21.4 20.9 102
Sage Creek Basin 7850 -M .0 * 20.2 16.9 120
Sand Lake 10098 33.3 25.0 133 38.3 32.7 117
South Brush Creek 8495 .1 .0 * 17.5 19.7 89
Tower 10620 43.3 38.8 112 50.4 50.2 100
Webber Springs 9260 11.8 4.4 268 32.7 32.2 102
Whiskey Park 9020 17.9 12.2 147 36.8 36.0 102
Willow Creek Pass 9523 6.2 4.6 135 19.3 18.2 106
Zirkel 9338 1.4 .0 * 36.5 36.4 100
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Basin Index (%) 124 102
SWEETWATER
Deer Park 9700 13.9 6.7 207 27.6 24.8 111
Larsen Creek 9000 -M .0 * 17.6 17.2 102
South Pass 9040 7.3 3.0 243 24.1 21.1 114
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Basin Index (%) 219 110
LOWER N. PLATTE
Casper Mtn. 7920 .9 .0 * 23.4 20.6 114
Laprele Creek 8390 .0 .0 * 18.2 17.6 103
Reno Hill 8430 4.6 .0 * 23.0 22.6 102
Windy Peak 7915 .1 .0 * 15.7 16.2 97
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Basin Index (%) * 104
LARAMIE RIVER
Brooklyn Lake 10250 14.7 10.0 147 32.6 28.6 114
Cinnabar Park 9707 8.0 6.4 125 28.6 29.4 97
Crow Creek 8335 .0 .0 * 13.3 15.6 85
Deadman Hill 10239 15.7 11.5 137 24.6 24.2 102
Rawah 9069 .0 .0 * 21.4 20.9 102
Roach 9740 2.7 3.6 75 22.5 24.5 92
Windy Peak 7915 .1 .0 * 15.7 16.2 97
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Basin Index (%) 131 100
S. PLATTE
Crow Creek 8335 .0 .0 * 13.3 15.6 85
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Basin Index (%) * 85
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 23.6 19.8 119
Divide Peak 8730 1.6 .0 * 31.2 26.8 116
Elk River 8739 .1 .0 * 24.6 24.4 101
Elkhead Divide 8800 2.8 -M * 28.9 -M *
Little Snake River 8928 13.2 5.8 228 42.1 40.3 104
Old Battle 9860 33.4 28.6 117 42.8 42.3 101
Sage Creek Basin 7850 -M .0 * 20.2 16.9 120
Sandstone RS 8152 .1 .0 * 23.7 22.0 108
Whiskey Park 9020 17.9 12.2 147 36.8 36.0 102
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Basin Index (%) 142* 107
UPPER GREEN RIVER
Big Sandy Opening 9080 .7 .0 * 18.2 17.2 106
Blind Bull Sum 8650 22.1 18.1 122 20.4 22.8 89
East Rim Divide 7930 -M .0 * 13.9 14.8 94
Elkhart Park G.S. 9400 -M .0 * 15.0 17.4 86
Gros Ventre Summit 8750 -M .4 * -M 16.0 *
Gunsight Pass 9820 6.1 8.1 75 18.7 18.0 104
Indian Creek 9425 14.3 14.0 102 24.7 25.7 96
Kendall R.S. 7740 .0 .0 * 15.9 16.9 94
Larsen Creek 9000 -M .0 * 17.6 17.2 102
Loomis Park 8240 .1 .0 * 18.4 21.5 86
New Fork Lake 8340 -M .0 * -M 14.8 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * 16.4 17.8 92
Spring Creek Divide 9000 18.6 17.7 105 26.7 29.2 91
Triple Peak 8500 7.8 4.8 162 30.7 31.9 96
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Basin Index (%) 111* 94
LOWER GREEN RIVER
Blacks Fork Jct 8869 .3 .0 * 18.1 15.5 117
Buck Pasture 9632 4.4 -M * 22.6 -M *
EF Blacks Fork GS 9360 2.3 .0 * 15.9 16.8 95
Hams Fork 7840 -M .0 * 14.6 14.8 99
Henrys Fork 10182 -M -M * 18.6 -M *
Hewinta 9500 -M .0 * 19.6 17.6 111
Hickerson Park 9122 -M .0 * 17.2 14.4 119
Hole-in-Rock 9168 -M .0 * 14.8 13.9 106
Indian Creek 9425 14.3 14.0 102 24.7 25.7 96
Kelley R.S. 8180 -M .0 * 21.4 22.1 97
Spirit Lk 10235 1.8 .5 360* 23.8 20.6 116
Steel Creek Park 10158 13.8 10.8 128 23.8 21.0 113
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Basin Index (%) 128* 106
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 18.0 15.0 120
Bug Lake 7987 .1 .0 * 26.7 21.8 122
Burts Miller Ranch 8000 .2 .0 * 15.0 9.8 153
Chalk Creek #1 9171 -M 5.0 * -M 29.8 *
Giveout 6930 -M .0 * 15.6 16.8 93
Hayden Fork 9130 -M .0 * 28.6 25.5 112
Kelley R.S. 8180 -M .0 * 21.4 22.1 97
Lily Lake 9133 .0 .0 * 20.2 21.1 96
Monte Cristo 8932 15.4 7.4 208 34.9 30.6 114
Salt River Summit 7640 -M .0 * 17.1 20.3 84
Spring Creek Divide 9000 18.6 17.7 105 26.7 29.2 91
Trial Lake 9992 19.6 7.4 265 32.8 27.6 119
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Basin Index (%) 166* 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.