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 MONDAY: MAY 13 , 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 4.1 3.4 121 23.4 23.8 98
Blind Bull Sum 8650 26.7 23.8 112 19.6 20.5 96
Cottonwood Creek 7670 12.8 12.8 100 30.4 29.9 102
East Rim Divide 7930 -M .3 * 13.5 13.6 99
Grand Targhee 9260 42.7 46.2 92 36.1 37.2 97
Granite Creek 6770 3.8 4.2 90 19.3 21.6 89
Grassy Lake 7265 19.6 20.2 97 38.2 40.0 96
Gros Ventre Summit 8750 7.1 9.6 74 -M 15.2 *
Gunsight Pass 9820 11.4 11.9 96 17.7 17.4 102
Lewis Lake Divide 7850 23.2 27.8 83 38.8 39.0 99
Loomis Park 8240 4.3 6.8 63 17.9 20.2 89
Phillips Bench 8200 24.3 22.8 107 33.5 30.3 111
Salt River Summit 7640 3.4 2.8 121 17.0 18.8 90
Snake River Station 6920 1.4 .4 350* 25.0 26.0 96
Somsen Ranch 6800 1.1 .0 * 23.6 19.3 122
Spring Creek Divide 9000 24.8 23.2 107 25.9 27.3 95
Thumb Divide 7980 8.7 5.8 150 20.5 22.2 92
Togwotee Pass 9580 21.4 25.1 85 24.5 28.8 85
Triple Peak 8500 17.5 16.3 107 29.9 29.8 100
Two Ocean Plateau 9240 30.2 33.0 92 30.3 30.8 98
Willow Creek 8080 26.0 22.2 117 40.2 39.9 101
Younts Peak 8350 6.6 12.0 55 17.9 18.0 99
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Basin Index (%) 97 98
MADISON HEADWATERS IN WYOMING
Black Bear 8170 31.9 39.8 80 41.7 42.0 99
Canyon 7870 6.4 -M * 15.6 -M *
Madison Plateau 7750 16.4 20.4 80 25.8 30.5 85
West Yellowstone 6700 -M .0 * 14.6 16.4 89
Whiskey Creek 6800 7.0 9.0 78 21.7 24.0 90
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Basin Index (%) 80 92
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.2 24.3 83 20.7 24.8 83
Canyon 7870 6.4 -M * 15.6 -M *
Evening Star 9200 19.3 26.2 74 30.8 33.3 92
Fisher Creek 9100 24.9 36.4 68 31.7 39.6 80
Monument Peak 8850 16.3 20.6 79 23.9 26.8 89
Northeast Entrance 7350 .0 .0 * 13.8 15.2 91
Parker Peak 9400 22.1 22.6 98 26.7 23.6 113
Sylvan Lake 8420 11.6 16.3 71 26.8 27.5 97
Thumb Divide 7980 8.7 5.8 150 20.5 22.2 92
Two Ocean Plateau 9240 30.2 33.0 92 30.3 30.8 98
White Mill 8700 19.0 26.2 73 22.1 26.6 83
Wolverine 7650 .0 .0 * 15.9 14.8 107
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Basin Index (%) 82 92
WIND RIVER
Burroughs Creek 8750 4.5 -M * 13.8 -M *
Castle Creek 8400 .1 .0 * 10.0 10.8 93
Cold Springs 9630 2.4 1.8 133 14.8 13.2 112
Deer Park 9700 19.9 14.1 141 26.7 23.4 114
Hobbs Park 10100 21.8 16.5 132 23.8 18.4 129
Kirwin 9550 14.0 11.4 123 19.8 16.0 124
Little Warm 9370 7.8 7.0 111 17.3 15.0 115
South Pass 9040 15.6 13.0 120 23.2 19.5 119
St. Lawrence Alt 8620 .0 -M * 14.6 -M *
Togwotee Pass 9580 21.4 25.1 85 24.5 28.8 85
Townsend Creek 8700 10.2 3.4 300 19.5 15.6 125
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Basin Index (%) 123 112
BIGHORN BASIN
Bald Mtn. 9380 19.1 21.0 91 17.8 20.2 88
Bear Trap Meadow 8200 -M .0 * 12.2 12.4 98
Bone Springs Div 9350 17.6 17.3 102 16.5 19.2 86
Grave Springs 8550 4.4 6.2 71 13.0 13.0 100
Kirwin 9550 14.0 11.4 123 19.8 16.0 124
Marquette 8760 16.6 7.7 216 22.1 14.3 155
Middle Powder 7760 12.6 8.2 154 13.9 13.4 104
Owl Creek 8975 -M .0 * 11.9 9.4 127
Powder River Pass 9480 5.4 8.8 61 15.9 16.8 95
Shell Creek 9580 17.1 16.4 104 18.5 17.4 106
Timber Creek 7950 3.5 .6 583 16.6 12.0 138
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Basin Index (%) 113 109
SHOSHONE RIVER
Blackwater 9780 23.9 23.8 100 28.2 26.9 105
Evening Star 9200 19.3 26.2 74 30.8 33.3 92
Marquette 8760 16.6 7.7 216 22.1 14.3 155
Sylvan Lake 8420 11.6 16.3 71 26.8 27.5 97
Sylvan Road 7120 -M .0 * 17.2 19.1 90
Younts Peak 8350 6.6 12.0 55 17.9 18.0 99
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Basin Index (%) 91 103
POWDER RIVER
Bear Trap Meadow 8200 -M .0 * 12.2 12.4 98
Cloud Peak Reservoir 9860 16.2 15.6 104 20.8 19.2 108
Grave Springs 8550 4.4 6.2 71 13.0 13.0 100
Hansen Sawmill 8360 -M .9 * 13.6 12.5 109
Middle Powder 7760 12.6 8.2 154 13.9 13.4 104
Powder River Pass 9480 5.4 8.8 61 15.9 16.8 95
Soldier Park 8720 .3 .2 150* 13.7 12.0 114
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Basin Index (%) 100 104
TONGUE RIVER
Big Goose 7990 7.8 7.8 100 16.6 15.7 106
Bone Springs Div 9350 17.6 17.3 102 16.5 19.2 86
Burgess Junction 7880 10.1 10.0 101 17.0 16.4 104
Dome Lake 8880 -M 10.1 * 17.9 18.8 95
Little Goose 8870 11.3 9.1 124 19.7 17.0 116
Sucker Creek 8880 11.2 11.4 98 21.2 19.2 110
Tie Creek 6870 .0 .0 * 16.5 15.9 104
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Basin Index (%) 104 103
BELLE FOURCHE
Blind Park 6890 .1 .0 * 11.8 14.4 82
Cole Canyon 5910 .1 .0 * 11.8 13.6 87
North Rapid Creek 6130 -M .0 * 11.9 12.4 96
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Basin Index (%) * 88
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 11.8 14.4 82
North Rapid Creek 6130 -M .0 * 11.9 12.4 96
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Basin Index (%) * 88
UPPER N. PLATTE
Arapaho Ridge 10976 -M 22.2 * -M 27.2 *
Blackhall Mtn 9839 37.0 31.9 116 41.8 38.7 108
Cinnabar Park 9707 18.6 15.6 119 27.7 27.8 100
Columbine 9167 13.8 9.6 144 30.9 30.4 102
Divide Peak 8730 15.8 12.0 132 29.5 25.6 115
Joe Wright 10158 23.5 22.2 106 31.7 32.4 98
Laprele Creek 8390 3.8 .6 633* 17.0 16.1 106
Med Bow 10512 44.5 -M * 40.2 -M *
Never Summer 10323 25.1 22.2 113 20.6 21.8 94
North French Creek 10153 31.1 32.0 97 33.8 35.1 96
Old Battle 9860 36.3 36.1 101 40.2 41.3 97
Rawah 9069 9.1 2.4 379 21.2 20.2 105
Sage Creek Basin 7850 -M .0 * 18.9 16.1 117
Sand Lake 10098 37.0 32.0 116 36.7 31.5 117
South Brush Creek 8495 3.4 .7 486* 16.1 18.6 87
Tower 10620 47.6 48.1 99 48.4 48.2 100
Webber Springs 9260 21.0 16.4 128 30.8 31.8 97
Whiskey Park 9020 27.8 25.8 108 35.2 35.2 100
Willow Creek Pass 9523 15.7 13.6 115 18.7 16.8 111
Zirkel 9338 16.8 17.8 94 34.7 35.6 97
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Basin Index (%) 113 102
SWEETWATER
Deer Park 9700 19.9 14.1 141 26.7 23.4 114
Larsen Creek 9000 -M .0 * 16.7 16.5 101
South Pass 9040 15.6 13.0 120 23.2 19.5 119
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Basin Index (%) 131 112
LOWER N. PLATTE
Casper Mtn. 7920 10.5 7.9 133 21.6 18.4 117
Laprele Creek 8390 3.8 .6 633* 17.0 16.1 106
Reno Hill 8430 11.1 9.2 121 21.6 21.2 102
Windy Peak 7915 4.6 .0 * 15.0 14.3 105
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Basin Index (%) 169 107
LARAMIE RIVER
Brooklyn Lake 10250 23.9 20.5 117 31.4 27.2 115
Cinnabar Park 9707 18.6 15.6 119 27.7 27.8 100
Crow Creek 8335 .0 .0 * 13.0 13.9 94
Deadman Hill 10239 23.3 18.1 129 23.8 23.4 102
Rawah 9069 9.1 2.4 379 21.2 20.2 105
Roach 9740 13.2 14.2 93 21.8 23.1 94
Windy Peak 7915 4.6 .0 * 15.0 14.3 105
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Basin Index (%) 131 103
S. PLATTE
Crow Creek 8335 .0 .0 * 13.0 13.9 94
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Basin Index (%) * 94
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 22.1 18.4 120
Divide Peak 8730 15.8 12.0 132 29.5 25.6 115
Elk River 8739 5.3 4.2 126 23.5 23.5 100
Elkhead Divide 8800 15.1 -M * 27.9 -M *
Little Snake River 8928 23.9 19.3 124 39.6 39.2 101
Old Battle 9860 36.3 36.1 101 40.2 41.3 97
Sage Creek Basin 7850 -M .0 * 18.9 16.1 117
Sandstone RS 8152 4.7 .0 * 21.9 21.0 104
Whiskey Park 9020 27.8 25.8 108 35.2 35.2 100
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Basin Index (%) 117 105
UPPER GREEN RIVER
Big Sandy Opening 9080 9.4 8.8 107 17.4 15.9 109
Blind Bull Sum 8650 26.7 23.8 112 19.6 20.5 96
East Rim Divide 7930 -M .3 * 13.5 13.6 99
Elkhart Park G.S. 9400 7.0 9.2 76 14.4 15.5 93
Gros Ventre Summit 8750 7.1 9.6 74 -M 15.2 *
Gunsight Pass 9820 11.4 11.9 96 17.7 17.4 102
Indian Creek 9425 22.4 21.2 106 24.0 23.4 103
Kendall R.S. 7740 .0 .0 * 15.2 15.8 96
Larsen Creek 9000 -M .0 * 16.7 16.5 101
Loomis Park 8240 4.3 6.8 63 17.9 20.2 89
New Fork Lake 8340 -M 2.0 * -M 13.2 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .4 2.8 14 16.1 16.0 101
Spring Creek Divide 9000 24.8 23.2 107 25.9 27.3 95
Triple Peak 8500 17.5 16.3 107 29.9 29.8 100
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Basin Index (%) 98 98
LOWER GREEN RIVER
Blacks Fork Jct 8869 1.0 .0 * 17.1 15.1 113
Buck Pasture 9632 12.0 -M * 21.0 -M *
EF Blacks Fork GS 9360 4.6 1.7 271 13.7 14.4 95
Hams Fork 7840 -M .0 * 13.9 13.8 101
Henrys Fork 10182 -M -M * 17.6 -M *
Hewinta 9500 4.8 .9 533* 18.5 17.0 109
Hickerson Park 9122 -M .0 * 16.4 13.0 126
Hole-in-Rock 9168 -M .0 * 14.1 13.2 107
Indian Creek 9425 22.4 21.2 106 24.0 23.4 103
Kelley R.S. 8180 9.2 7.2 128 20.8 19.4 107
Spirit Lk 10235 11.3 8.6 131 23.1 20.0 116
Steel Creek Park 10158 17.8 17.1 104 22.4 20.8 108
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Basin Index (%) 125 108
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 17.2 14.4 119
Bug Lake 7987 12.5 11.9 105 26.3 20.1 131
Burts Miller Ranch 8000 .2 .0 * 14.3 8.8 162
Chalk Creek #1 9171 19.5 18.9 103 29.5 27.8 106
Giveout 6930 -M .0 * 14.8 15.0 99
Hayden Fork 9130 4.8 2.9 166 27.6 24.3 114
Kelley R.S. 8180 9.2 7.2 128 20.8 19.4 107
Lily Lake 9133 8.7 4.0 218 19.2 19.9 96
Monte Cristo 8932 27.5 20.2 136 34.1 29.4 116
Salt River Summit 7640 3.4 2.8 121 17.0 18.8 90
Spring Creek Divide 9000 24.8 23.2 107 25.9 27.3 95
Trial Lake 9992 27.8 20.3 137 31.4 26.6 118
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Basin Index (%) 124 110
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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.