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 WEDNESDAY: MAY 8 , 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 7.6 6.6 115 23.4 23.4 100
Blind Bull Sum 8650 27.1 24.0 113 19.5 19.8 98
Cottonwood Creek 7670 14.3 15.4 93 30.0 28.8 104
East Rim Divide 7930 -M 3.2 * 13.0 13.0 100
Grand Targhee 9260 44.6 46.8 95 34.5 36.6 94
Granite Creek 6770 7.3 6.8 107 19.2 21.2 91
Grassy Lake 7265 22.5 24.1 93 37.9 39.0 97
Gros Ventre Summit 8750 9.2 10.6 87 -M 14.9 *
Gunsight Pass 9820 12.4 12.4 100 17.4 16.8 104
Lewis Lake Divide 7850 26.8 29.4 91 38.6 37.6 103
Loomis Park 8240 6.2 8.7 71 17.9 19.4 92
Phillips Bench 8200 25.3 24.5 103 33.1 29.0 114
Salt River Summit 7640 6.3 5.7 111 16.1 18.4 88
Snake River Station 6920 6.2 4.1 151 24.8 25.2 98
Somsen Ranch 6800 5.3 .0 * 23.4 18.8 124
Spring Creek Divide 9000 24.9 24.2 103 25.7 26.4 97
Thumb Divide 7980 12.1 9.0 134 20.3 21.7 94
Togwotee Pass 9580 22.1 25.4 87 23.6 28.4 83
Triple Peak 8500 19.2 17.1 112 29.4 29.2 101
Two Ocean Plateau 9240 31.7 32.8 97 30.0 30.4 99
Willow Creek 8080 27.7 25.1 110 39.6 38.7 102
Younts Peak 8350 9.8 13.2 74 17.8 17.6 101
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Basin Index (%) 101 99
MADISON HEADWATERS IN WYOMING
Black Bear 8170 33.6 41.0 82 41.5 41.4 100
Canyon 7870 8.6 -M * 15.5 -M *
Madison Plateau 7750 18.4 22.4 82 25.7 28.2 91
West Yellowstone 6700 -M .0 * 14.9 16.2 92
Whiskey Creek 6800 9.4 11.2 84 21.7 22.8 95
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Basin Index (%) 82 96
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 19.3 24.8 78 19.4 24.0 81
Canyon 7870 8.6 -M * 15.5 -M *
Evening Star 9200 21.2 27.1 78 30.3 32.2 94
Fisher Creek 9100 25.0 35.9 70 29.8 38.3 78
Monument Peak 8850 16.0 21.8 73 22.2 26.4 84
Northeast Entrance 7350 .2 .0 * 13.0 15.0 87
Parker Peak 9400 22.1 24.3 91 25.9 23.3 111
Sylvan Lake 8420 12.8 18.2 70 26.3 27.2 97
Thumb Divide 7980 12.1 9.0 134 20.3 21.7 94
Two Ocean Plateau 9240 31.7 32.8 97 30.0 30.4 99
White Mill 8700 19.1 26.8 71 20.9 25.8 81
Wolverine 7650 .1 .6 17* 15.4 14.2 108
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Basin Index (%) 81 91
WIND RIVER
Burroughs Creek 8750 6.8 -M * 13.8 -M *
Castle Creek 8400 .1 .0 * 9.6 10.6 91
Cold Springs 9630 3.7 2.3 161 14.4 11.8 122
Deer Park 9700 18.4 13.6 135 24.6 22.3 110
Hobbs Park 10100 18.6 15.8 118 20.6 17.4 118
Kirwin 9550 13.8 11.8 117 18.4 15.3 120
Little Warm 9370 9.3 7.7 121 17.0 14.4 118
South Pass 9040 14.8 12.2 121 21.2 19.2 110
St. Lawrence Alt 8620 -M -M * 13.3 -M *
Togwotee Pass 9580 22.1 25.4 87 23.6 28.4 83
Townsend Creek 8700 8.5 6.8 125 16.9 14.4 117
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Basin Index (%) 114 108
BIGHORN BASIN
Bald Mtn. 9380 17.8 20.6 86 16.5 19.6 84
Bear Trap Meadow 8200 1.4 .4 350* 11.9 11.6 103
Bone Springs Div 9350 16.6 17.6 94 15.3 18.8 81
Grave Springs 8550 5.1 6.8 75 12.4 12.6 98
Kirwin 9550 13.8 11.8 117 18.4 15.3 120
Marquette 8760 15.5 7.0 221 20.0 12.8 156
Middle Powder 7760 12.6 9.2 137 13.4 12.8 105
Owl Creek 8975 .1 .8 12 11.3 8.8 128
Powder River Pass 9480 5.5 9.1 60 15.4 16.2 95
Shell Creek 9580 16.4 17.0 96 17.3 17.1 101
Timber Creek 7950 4.4 1.8 244 15.9 10.8 147
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Basin Index (%) 107 107
SHOSHONE RIVER
Blackwater 9780 24.9 26.6 94 27.3 26.4 103
Evening Star 9200 21.2 27.1 78 30.3 32.2 94
Marquette 8760 15.5 7.0 221 20.0 12.8 156
Sylvan Lake 8420 12.8 18.2 70 26.3 27.2 97
Sylvan Road 7120 .0 .2 0* 17.2 18.5 93
Younts Peak 8350 9.8 13.2 74 17.8 17.6 101
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Basin Index (%) 91 103
POWDER RIVER
Bear Trap Meadow 8200 1.4 .4 350* 11.9 11.6 103
Cloud Peak Reservoir 9860 15.0 16.1 93 19.6 18.2 108
Grave Springs 8550 5.1 6.8 75 12.4 12.6 98
Hansen Sawmill 8360 1.8 2.3 78 13.0 11.7 111
Middle Powder 7760 12.6 9.2 137 13.4 12.8 105
Powder River Pass 9480 5.5 9.1 60 15.4 16.2 95
Soldier Park 8720 1.3 1.2 108 13.3 11.9 112
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Basin Index (%) 95 104
TONGUE RIVER
Big Goose 7990 6.6 8.2 80 14.7 14.0 105
Bone Springs Div 9350 16.6 17.6 94 15.3 18.8 81
Burgess Junction 7880 9.0 11.3 80 15.1 15.6 97
Dome Lake 8880 -M 11.1 * 16.0 17.2 93
Little Goose 8870 9.9 10.0 99 17.4 16.2 107
Sucker Creek 8880 10.0 12.2 82 18.8 18.6 101
Tie Creek 6870 .4 1.2 33 14.6 14.6 100
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Basin Index (%) 87 97
BELLE FOURCHE
Blind Park 6890 2.0 .0 * 11.3 13.9 81
Cole Canyon 5910 2.2 .0 * 11.3 13.1 86
North Rapid Creek 6130 -M .0 * 11.5 11.6 99
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Basin Index (%) * 88
CHEYENNE RIVER BASIN
Blind Park 6890 2.0 .0 * 11.3 13.9 81
North Rapid Creek 6130 -M .0 * 11.5 11.6 99
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Basin Index (%) * 89
UPPER N. PLATTE
Arapaho Ridge 10976 23.6 22.1 107 27.0 25.8 105
Blackhall Mtn 9839 37.8 32.8 115 41.5 36.9 112
Cinnabar Park 9707 18.9 17.3 109 27.4 27.5 100
Columbine 9167 14.8 14.0 106 30.6 29.8 103
Divide Peak 8730 16.6 13.2 126 29.1 25.3 115
Joe Wright 10158 23.4 22.2 105 31.4 31.4 100
Laprele Creek 8390 3.1 3.0 103 15.0 15.5 97
Med Bow 10512 44.7 -M * 39.7 -M *
Never Summer 10323 25.1 22.2 113 20.4 20.8 98
North French Creek 10153 31.1 31.6 98 33.4 34.0 98
Old Battle 9860 36.3 35.4 103 39.7 39.7 100
Rawah 9069 9.9 4.2 236 20.8 20.1 103
Sage Creek Basin 7850 1.0 .0 * 18.8 15.3 123
Sand Lake 10098 36.4 31.9 114 36.0 30.4 118
South Brush Creek 8495 5.7 2.6 219 15.8 17.2 92
Tower 10620 47.3 47.2 100 47.6 46.1 103
Webber Springs 9260 21.3 19.6 109 30.4 30.6 99
Whiskey Park 9020 28.9 27.4 105 35.0 34.4 102
Willow Creek Pass 9523 16.1 14.7 110 18.6 16.8 111
Zirkel 9338 17.6 20.4 86 34.3 35.4 97
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Basin Index (%) 109 104
SWEETWATER
Deer Park 9700 18.4 13.6 135 24.6 22.3 110
Larsen Creek 9000 -M .2 * 16.1 16.4 98
South Pass 9040 14.8 12.2 121 21.2 19.2 110
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Basin Index (%) 129 107
LOWER N. PLATTE
Casper Mtn. 7920 8.6 10.4 83 19.2 18.0 107
Laprele Creek 8390 3.1 3.0 103 15.0 15.5 97
Reno Hill 8430 9.3 12.9 72 19.0 20.9 91
Windy Peak 7915 4.8 1.6 300 13.9 13.9 100
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Basin Index (%) 92 98
LARAMIE RIVER
Brooklyn Lake 10250 24.1 21.8 111 31.1 26.0 120
Cinnabar Park 9707 18.9 17.3 109 27.4 27.5 100
Crow Creek 8335 .0 .0 * 12.8 13.6 94
Deadman Hill 10239 23.2 19.4 120 23.3 22.1 105
Rawah 9069 9.9 4.2 236 20.8 20.1 103
Roach 9740 13.5 15.7 86 21.4 22.2 96
Windy Peak 7915 4.8 1.6 300 13.9 13.9 100
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Basin Index (%) 118 104
S. PLATTE
Crow Creek 8335 .0 .0 * 12.8 13.6 94
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Basin Index (%) * 94
LITTLE SNAKE RIVER
Battle Mountain 7498 .6 .0 * 22.0 17.8 124
Divide Peak 8730 16.6 13.2 126 29.1 25.3 115
Elk River 8739 7.6 8.5 89 23.4 23.0 102
Elkhead Divide 8800 16.2 -M * 27.4 -M *
Little Snake River 8928 25.2 20.6 122 39.3 37.6 105
Old Battle 9860 36.3 35.4 103 39.7 39.7 100
Sage Creek Basin 7850 1.0 .0 * 18.8 15.3 123
Sandstone RS 8152 6.6 3.2 206 21.7 20.4 106
Whiskey Park 9020 28.9 27.4 105 35.0 34.4 102
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Basin Index (%) 113 107
UPPER GREEN RIVER
Big Sandy Opening 9080 10.4 9.6 108 16.8 15.5 108
Blind Bull Sum 8650 27.1 24.0 113 19.5 19.8 98
East Rim Divide 7930 -M 3.2 * 13.0 13.0 100
Elkhart Park G.S. 9400 8.2 9.7 85 14.1 14.7 96
Gros Ventre Summit 8750 9.2 10.6 87 -M 14.9 *
Gunsight Pass 9820 12.4 12.4 100 17.4 16.8 104
Indian Creek 9425 23.2 20.9 111 23.4 22.4 104
Kendall R.S. 7740 .0 .2 0* 15.3 15.1 101
Larsen Creek 9000 -M .2 * 16.1 16.4 98
Loomis Park 8240 6.2 8.7 71 17.9 19.4 92
New Fork Lake 8340 1.0 3.4 29 -M 12.6 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 3.6 5.6 64 15.9 15.7 101
Spring Creek Divide 9000 24.9 24.2 103 25.7 26.4 97
Triple Peak 8500 19.2 17.1 112 29.4 29.2 101
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Basin Index (%) 99 100
LOWER GREEN RIVER
Blacks Fork Jct 8869 2.0 .2 1000* 16.6 14.6 114
Buck Pasture 9632 12.0 -M * 20.4 -M *
EF Blacks Fork GS 9360 4.6 5.0 92 13.0 14.2 92
Hams Fork 7840 -M .2 * 13.5 12.9 105
Henrys Fork 10182 -M -M * 16.4 -M *
Hewinta 9500 4.9 3.0 163 17.8 16.4 109
Hickerson Park 9122 -M 1.0 * 15.9 12.6 126
Hole-in-Rock 9168 -M .5 * 12.8 12.6 102
Indian Creek 9425 23.2 20.9 111 23.4 22.4 104
Kelley R.S. 8180 11.0 8.5 129 20.5 18.6 110
Spirit Lk 10235 10.1 11.7 86 21.5 20.0 108
Steel Creek Park 10158 17.0 17.2 99 21.7 19.8 110
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Basin Index (%) 109 108
UPPER BEAR RIVER
Bear River RS 8777 .7 .0 * 17.0 14.0 121
Bug Lake 7987 15.0 12.6 119 26.1 19.5 134
Burts Miller Ranch 8000 .5 .0 * 13.8 8.8 157
Chalk Creek #1 9171 20.4 20.8 98 29.2 26.4 111
Giveout 6930 -M .0 * 14.6 14.6 100
Hayden Fork 9130 6.2 5.5 113 27.3 23.6 116
Kelley R.S. 8180 11.0 8.5 129 20.5 18.6 110
Lily Lake 9133 9.0 7.2 125 18.8 18.6 101
Monte Cristo 8932 28.2 20.6 137 33.7 28.2 120
Salt River Summit 7640 6.3 5.7 111 16.1 18.4 88
Spring Creek Divide 9000 24.9 24.2 103 25.7 26.4 97
Trial Lake 9992 28.3 21.2 133 31.1 25.4 122
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Basin Index (%) 119 113
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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.