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 SATURDAY: MAY 11 , 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 6.1 4.9 124 23.4 23.6 99
Blind Bull Sum 8650 27.4 24.2 113 19.6 20.2 97
Cottonwood Creek 7670 14.6 14.6 100 30.5 29.6 103
East Rim Divide 7930 -M .6 * 13.3 13.3 100
Grand Targhee 9260 46.7 47.0 99 35.8 37.2 96
Granite Creek 6770 5.9 5.0 118 19.2 21.4 90
Grassy Lake 7265 21.9 21.8 100 38.2 39.8 96
Gros Ventre Summit 8750 8.4 9.5 88 -M 15.0 *
Gunsight Pass 9820 12.5 12.4 101 17.7 17.2 103
Lewis Lake Divide 7850 25.5 29.8 86 38.8 38.8 100
Loomis Park 8240 5.7 7.0 81 18.0 19.8 91
Phillips Bench 8200 25.2 23.5 107 33.5 30.1 111
Salt River Summit 7640 5.8 4.0 145 16.6 18.8 88
Snake River Station 6920 4.6 2.4 192 24.9 26.0 96
Somsen Ranch 6800 4.4 .0 * 23.6 19.2 123
Spring Creek Divide 9000 25.2 24.0 105 25.9 27.0 96
Thumb Divide 7980 10.8 7.4 146 20.5 22.2 92
Togwotee Pass 9580 22.5 25.8 87 24.5 28.6 86
Triple Peak 8500 19.1 16.3 117 29.9 29.6 101
Two Ocean Plateau 9240 31.3 33.3 94 30.3 30.5 99
Willow Creek 8080 28.6 22.7 126 40.2 39.3 102
Younts Peak 8350 8.8 12.5 70 17.8 17.8 100
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Basin Index (%) 104 99
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.5 40.8 82 41.6 41.6 100
Canyon 7870 8.1 -M * 15.7 -M *
Madison Plateau 7750 17.9 21.6 83 25.8 30.0 86
West Yellowstone 6700 -M .0 * 14.8 16.2 91
Whiskey Creek 6800 8.3 10.0 83 21.6 23.4 92
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Basin Index (%) 82 93
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.6 25.0 82 20.7 24.6 84
Canyon 7870 8.1 -M * 15.7 -M *
Evening Star 9200 21.1 26.4 80 30.7 33.2 92
Fisher Creek 9100 26.2 36.2 72 31.7 39.2 81
Monument Peak 8850 17.4 21.4 81 23.9 26.6 90
Northeast Entrance 7350 .0 .0 * 13.8 15.1 91
Parker Peak 9400 23.1 23.5 98 26.7 23.4 114
Sylvan Lake 8420 13.0 17.4 75 26.8 27.4 98
Thumb Divide 7980 10.8 7.4 146 20.5 22.2 92
Two Ocean Plateau 9240 31.3 33.3 94 30.3 30.5 99
White Mill 8700 20.0 26.6 75 22.1 26.4 84
Wolverine 7650 .0 .0 * 16.0 14.6 110
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Basin Index (%) 84 93
WIND RIVER
Burroughs Creek 8750 6.0 -M * 14.0 -M *
Castle Creek 8400 .1 .0 * 10.0 10.8 93
Cold Springs 9630 3.9 2.2 177 14.8 12.6 117
Deer Park 9700 20.6 14.0 147 26.7 23.0 116
Hobbs Park 10100 22.0 15.6 141 23.7 17.8 133
Kirwin 9550 15.1 11.6 130 19.8 15.8 125
Little Warm 9370 9.2 7.2 128 17.2 14.4 119
South Pass 9040 16.5 12.7 130 23.3 19.3 121
St. Lawrence Alt 8620 .8 -M * 14.6 -M *
Togwotee Pass 9580 22.5 25.8 87 24.5 28.6 86
Townsend Creek 8700 11.0 5.0 220 19.6 15.5 126
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Basin Index (%) 128 114
BIGHORN BASIN
Bald Mtn. 9380 19.7 21.1 93 17.8 19.8 90
Bear Trap Meadow 8200 .9 .4 225* 12.2 12.2 100
Bone Springs Div 9350 18.1 17.6 103 16.4 18.8 87
Grave Springs 8550 5.5 6.4 86 13.0 12.7 102
Kirwin 9550 15.1 11.6 130 19.8 15.8 125
Marquette 8760 17.4 8.4 207 22.1 13.3 166
Middle Powder 7760 13.4 9.3 144 13.8 13.3 104
Owl Creek 8975 .0 .8 0 11.8 9.2 128
Powder River Pass 9480 6.0 8.9 67 15.8 16.8 94
Shell Creek 9580 17.9 16.6 108 18.5 17.2 108
Timber Creek 7950 4.3 1.3 331 16.5 11.4 145
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Basin Index (%) 116 111
SHOSHONE RIVER
Blackwater 9780 25.7 24.8 104 28.1 26.8 105
Evening Star 9200 21.1 26.4 80 30.7 33.2 92
Marquette 8760 17.4 8.4 207 22.1 13.3 166
Sylvan Lake 8420 13.0 17.4 75 26.8 27.4 98
Sylvan Road 7120 -M .0 * 17.1 19.0 90
Younts Peak 8350 8.8 12.5 70 17.8 17.8 100
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Basin Index (%) 96 104
POWDER RIVER
Bear Trap Meadow 8200 .9 .4 225* 12.2 12.2 100
Cloud Peak Reservoir 9860 16.5 16.0 103 20.7 18.4 112
Grave Springs 8550 5.5 6.4 86 13.0 12.7 102
Hansen Sawmill 8360 1.4 1.2 117 13.4 12.2 110
Middle Powder 7760 13.4 9.3 144 13.8 13.3 104
Powder River Pass 9480 6.0 8.9 67 15.8 16.8 94
Soldier Park 8720 1.2 .8 150 13.7 12.0 114
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Basin Index (%) 104 105
TONGUE RIVER
Big Goose 7990 8.6 8.5 101 16.7 15.0 111
Bone Springs Div 9350 18.1 17.6 103 16.4 18.8 87
Burgess Junction 7880 10.8 10.8 100 17.0 16.0 106
Dome Lake 8880 -M 11.0 * 17.8 17.6 101
Little Goose 8870 12.1 9.4 129 19.6 16.6 118
Sucker Creek 8880 12.0 12.5 96 21.2 19.1 111
Tie Creek 6870 1.2 .4 300* 16.5 15.6 106
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Basin Index (%) 106 105
BELLE FOURCHE
Blind Park 6890 1.0 .0 * 11.8 14.2 83
Cole Canyon 5910 .8 .0 * 12.0 13.4 90
North Rapid Creek 6130 -M .0 * 11.9 12.2 98
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Basin Index (%) * 90
CHEYENNE RIVER BASIN
Blind Park 6890 1.0 .0 * 11.8 14.2 83
North Rapid Creek 6130 -M .0 * 11.9 12.2 98
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Basin Index (%) * 90
UPPER N. PLATTE
Arapaho Ridge 10976 23.9 22.2 108 27.2 26.8 101
Blackhall Mtn 9839 37.4 33.2 113 41.8 37.5 111
Cinnabar Park 9707 19.3 17.6 110 27.6 27.8 99
Columbine 9167 14.9 12.0 124 30.9 30.4 102
Divide Peak 8730 16.9 11.2 151 29.5 25.4 116
Joe Wright 10158 23.7 22.4 106 31.5 32.1 98
Laprele Creek 8390 4.8 .7 686* 17.0 15.8 108
Med Bow 10512 44.9 -M * 40.1 -M *
Never Summer 10323 25.2 22.0 115 20.5 21.0 98
North French Creek 10153 31.6 32.5 97 33.8 35.0 97
Old Battle 9860 36.7 37.2 99 40.2 41.0 98
Rawah 9069 10.1 2.8 361 21.2 20.2 105
Sage Creek Basin 7850 .0 .0 * 18.9 15.7 120
Sand Lake 10098 37.0 32.1 115 36.7 31.5 117
South Brush Creek 8495 5.4 1.4 386 16.0 17.8 90
Tower 10620 47.8 48.0 100 48.2 47.6 101
Webber Springs 9260 21.4 18.0 119 30.7 31.4 98
Whiskey Park 9020 28.9 26.6 109 35.2 35.2 100
Willow Creek Pass 9523 16.1 14.0 115 18.7 16.8 111
Zirkel 9338 17.6 19.1 92 34.5 35.4 97
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Basin Index (%) 112 103
SWEETWATER
Deer Park 9700 20.6 14.0 147 26.7 23.0 116
Larsen Creek 9000 -M .0 * 16.7 16.5 101
South Pass 9040 16.5 12.7 130 23.3 19.3 121
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Basin Index (%) 139 113
LOWER N. PLATTE
Casper Mtn. 7920 11.5 9.8 117 21.4 18.2 118
Laprele Creek 8390 4.8 .7 686* 17.0 15.8 108
Reno Hill 8430 11.9 10.4 114 21.6 21.2 102
Windy Peak 7915 5.6 .3 1867* 15.0 14.2 106
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Basin Index (%) 159 108
LARAMIE RIVER
Brooklyn Lake 10250 24.4 21.0 116 31.4 27.1 116
Cinnabar Park 9707 19.3 17.6 110 27.6 27.8 99
Crow Creek 8335 .0 .0 * 13.0 13.7 95
Deadman Hill 10239 23.7 18.5 128 23.6 23.2 102
Rawah 9069 10.1 2.8 361 21.2 20.2 105
Roach 9740 13.8 15.2 91 21.8 22.6 96
Windy Peak 7915 5.6 .3 1867* 15.0 14.2 106
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Basin Index (%) 129 103
S. PLATTE
Crow Creek 8335 .0 .0 * 13.0 13.7 95
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Basin Index (%) * 95
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 22.1 18.2 121
Divide Peak 8730 16.9 11.2 151 29.5 25.4 116
Elk River 8739 7.7 5.8 133 23.5 23.5 100
Elkhead Divide 8800 16.2 -M * 27.9 -M *
Little Snake River 8928 25.1 21.2 118 39.5 38.4 103
Old Battle 9860 36.7 37.2 99 40.2 41.0 98
Sage Creek Basin 7850 .0 .0 * 18.9 15.7 120
Sandstone RS 8152 6.1 .6 1017* 21.9 20.6 106
Whiskey Park 9020 28.9 26.6 109 35.2 35.2 100
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Basin Index (%) 118 106
UPPER GREEN RIVER
Big Sandy Opening 9080 10.7 9.3 115 17.4 15.8 110
Blind Bull Sum 8650 27.4 24.2 113 19.6 20.2 97
East Rim Divide 7930 -M .6 * 13.3 13.3 100
Elkhart Park G.S. 9400 8.3 9.6 86 14.4 15.1 95
Gros Ventre Summit 8750 8.4 9.5 88 -M 15.0 *
Gunsight Pass 9820 12.5 12.4 101 17.7 17.2 103
Indian Creek 9425 23.9 21.0 114 24.0 23.2 103
Kendall R.S. 7740 .0 .0 * 15.3 15.4 99
Larsen Creek 9000 -M .0 * 16.7 16.5 101
Loomis Park 8240 5.7 7.0 81 18.0 19.8 91
New Fork Lake 8340 -M 2.8 * -M 12.9 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 2.2 4.2 52 16.0 15.8 101
Spring Creek Divide 9000 25.2 24.0 105 25.9 27.0 96
Triple Peak 8500 19.1 16.3 117 29.9 29.6 101
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Basin Index (%) 104 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 2.3 .0 * 17.1 15.0 114
Buck Pasture 9632 12.5 -M * 21.0 -M *
EF Blacks Fork GS 9360 5.4 3.8 142 13.7 14.4 95
Hams Fork 7840 -M .0 * 13.8 13.6 101
Henrys Fork 10182 -M -M * 17.7 -M *
Hewinta 9500 5.8 .5 1160* 18.4 16.6 111
Hickerson Park 9122 1.0 .1 1000* 16.6 13.0 128
Hole-in-Rock 9168 .7 .0 * 14.1 12.8 110
Indian Creek 9425 23.9 21.0 114 24.0 23.2 103
Kelley R.S. 8180 11.0 8.3 133 20.8 19.2 108
Spirit Lk 10235 11.6 10.0 116 23.1 20.0 116
Steel Creek Park 10158 17.9 18.1 99 22.4 20.1 111
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Basin Index (%) 129 110
UPPER BEAR RIVER
Bear River RS 8777 .4 .0 * 17.2 14.3 120
Bug Lake 7987 14.6 12.2 120 26.3 20.0 132
Burts Miller Ranch 8000 .2 .0 * 14.2 8.8 161
Chalk Creek #1 9171 20.4 19.5 105 29.4 27.3 108
Giveout 6930 -M .0 * 14.7 15.0 98
Hayden Fork 9130 6.2 4.4 141 27.6 24.3 114
Kelley R.S. 8180 11.0 8.3 133 20.8 19.2 108
Lily Lake 9133 9.4 5.6 168 19.2 19.8 97
Monte Cristo 8932 28.4 20.9 136 34.1 29.2 117
Salt River Summit 7640 5.8 4.0 145 16.6 18.8 88
Spring Creek Divide 9000 25.2 24.0 105 25.9 27.0 96
Trial Lake 9992 28.6 20.8 138 31.4 26.5 118
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Basin Index (%) 125 111
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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.