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 25 , 2022
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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 * 21.2 25.2 84
Blind Bull Sum 8650 22.2 19.6 113 17.7 22.2 80
Cottonwood Creek 7670 7.3 4.2 174 30.2 30.7 98
East Rim Divide 7930 .0 .0 * 12.9 14.5 89
Grand Targhee 9260 32.2 44.0 73 33.2 39.6 84
Granite Creek 6770 .0 .0 * 17.4 22.8 76
Grassy Lake 7265 14.2 12.6 113 36.4 42.6 85
Gros Ventre Summit 8750 1.3 1.1 118* 13.8 16.0 86
Gunsight Pass 9820 11.0 8.6 128 17.5 17.8 98
Lewis Lake Divide 7850 14.8 18.6 80 37.2 40.0 93
Loomis Park 8240 .0 .0 * 18.6 21.0 89
Phillips Bench 8200 14.8 14.6 101 28.3 31.6 90
Salt River Summit 7640 .0 .0 * 18.8 19.4 97
Snake River Station 6920 .0 .0 * 21.4 28.1 76
Somsen Ranch 6800 .0 .0 * -M 20.4 *
Spring Creek Divide 9000 19.7 18.8 105 27.6 28.6 97
Thumb Divide 7980 4.6 .0 * 22.7 23.0 99
Togwotee Pass 9580 21.7 22.6 96 27.4 30.0 91
Triple Peak 8500 13.6 7.0 194 31.6 31.2 101
Two Ocean Plateau 9240 30.5 28.6 107 31.3 32.8 95
Willow Creek 8080 15.9 12.6 126 39.2 41.1 95
Younts Peak 8350 .7 3.2 22 15.8 19.5 81
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Basin Index (%) 104 90
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.8 33.2 84 36.0 45.2 80
Canyon 7870 5.4 -M * 16.7 -M *
Madison Plateau 7750 12.1 12.8 95 26.0 31.2 83
West Yellowstone 6700 .0 .0 * 16.5 17.8 93
Whiskey Creek 6800 4.9 2.4 204 -M 25.4 *
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Basin Index (%) 93 83
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 21.1 21.0 100 22.2 26.4 84
Canyon 7870 5.4 -M * 16.7 -M *
Evening Star 9200 29.1 21.9 133 31.5 35.1 90
Fisher Creek 9100 33.4 35.4 94 39.1 41.9 93
Monument Peak 8850 19.6 17.4 113 28.1 28.0 100
Northeast Entrance 7350 .0 .0 * 15.6 16.8 93
Parker Peak 9400 23.6 18.6 127 26.6 24.6 108
Sylvan Lake 8420 10.9 11.8 92 27.4 29.4 93
Thumb Divide 7980 4.6 .0 * 22.7 23.0 99
Two Ocean Plateau 9240 30.5 28.6 107 31.3 32.8 95
White Mill 8700 23.0 21.2 108 26.2 27.8 94
Wolverine 7650 .0 .0 * 16.9 16.0 106
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Basin Index (%) 111 95
WIND RIVER
Burroughs Creek 8750 1.4 -M * 17.7 -M *
Castle Creek 8400 .0 .0 * 10.9 12.4 88
Cold Springs 9630 .3 .0 * 16.9 14.7 115
Deer Park 9700 10.9 8.5 128 22.5 24.5 92
Hobbs Park 10100 17.4 12.0 145 23.0 19.8 116
Kirwin 9550 10.2 6.4 159 18.6 17.2 108
Little Warm 9370 6.3 .4 1575* 17.6 15.8 111
South Pass 9040 6.1 6.7 91 19.1 20.7 92
St. Lawrence Alt 8620 .0 -M * 13.3 -M *
Togwotee Pass 9580 21.7 22.6 96 27.4 30.0 91
Townsend Creek 8700 2.9 .0 * 18.3 17.9 102
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Basin Index (%) 134 101
BIGHORN BASIN
Bald Mtn. 9380 18.4 17.0 108 19.6 21.2 92
Bear Trap Meadow 8200 .4 .0 * 13.9 13.2 105
Bone Springs Div 9350 15.9 12.8 124 17.7 20.1 88
Grave Springs 8550 3.2 .0 * 14.8 13.8 107
Kirwin 9550 10.2 6.4 159 18.6 17.2 108
Marquette 8760 1.3 1.0 130 13.9 16.4 85
Middle Powder 7760 5.3 .4 1325* 14.7 15.0 98
Owl Creek 8975 .5 .0 * 11.5 10.7 107
Powder River Pass 9480 4.4 3.2 138 13.3 18.1 73
Shell Creek 9580 15.7 13.6 115 19.0 18.8 101
Timber Creek 7950 .2 .0 * 12.8 13.4 96
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Basin Index (%) 139 95
SHOSHONE RIVER
Blackwater 9780 27.3 23.2 118 30.2 29.1 104
Evening Star 9200 29.1 21.9 133 31.5 35.1 90
Marquette 8760 1.3 1.0 130 13.9 16.4 85
Sylvan Lake 8420 10.9 11.8 92 27.4 29.4 93
Sylvan Road 7120 .1 .0 * -M 20.0 *
Younts Peak 8350 .7 3.2 22 15.8 19.5 81
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Basin Index (%) 114 92
POWDER RIVER
Bear Trap Meadow 8200 .4 .0 * 13.9 13.2 105
Cloud Peak Reservoir 9860 13.9 12.1 115 20.9 21.2 99
Grave Springs 8550 3.2 .0 * 14.8 13.8 107
Hansen Sawmill 8360 .4 .0 * 13.5 13.8 98
Middle Powder 7760 5.3 .4 1325* 14.7 15.0 98
Powder River Pass 9480 4.4 3.2 138 13.3 18.1 73
Soldier Park 8720 .7 1.0 70 14.1 14.7 96
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Basin Index (%) 169* 96
TONGUE RIVER
Big Goose 7990 3.8 1.2 317 16.4 18.4 89
Bone Springs Div 9350 15.9 12.8 124 17.7 20.1 88
Burgess Junction 7880 10.1 4.2 240 19.2 17.8 108
Dome Lake 8880 9.8 2.6 377 19.5 20.4 96
Little Goose 8870 6.9 4.6 150 20.0 19.6 102
Sucker Creek 8880 10.3 4.7 219 23.2 21.4 108
Tie Creek 6870 .0 .0 * 18.1 18.0 101
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Basin Index (%) 189 99
BELLE FOURCHE
Blind Park 6890 .0 .0 * 16.2 15.6 104
Cole Canyon 5910 .0 .0 * 16.7 14.5 115
North Rapid Creek 6130 .0 .0 * 10.0 13.4 75
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Basin Index (%) * 99
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.2 15.6 104
North Rapid Creek 6130 .0 .0 * 10.0 13.4 75
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Basin Index (%) * 90
UPPER N. PLATTE
Arapaho Ridge 10976 11.7 15.8 74 26.3 28.6 92
Blackhall Mtn 9839 19.0 29.1 65 36.5 40.6 90
Cinnabar Park 9707 4.8 7.8 62 25.3 29.2 87
Columbine 9167 .0 .0 * 30.2 31.3 96
Divide Peak 8730 .0 .4 0* 24.8 26.2 95
Joe Wright 10158 18.9 16.8 112 38.5 34.0 113
Laprele Creek 8390 .1 .0 * 15.8 17.4 91
Med Bow 10512 31.7 -M * 37.8 -M *
Never Summer 10323 22.3 18.8 119 23.6 23.1 102
North French Creek 10153 21.5 26.0 83 33.4 36.6 91
Old Battle 9860 27.2 30.6 89 37.3 42.1 89
Rawah 9069 .2 .0 * 22.0 20.8 106
Sage Creek Basin 7850 -M .0 * 13.7 16.8 82
Sand Lake 10098 26.8 26.4 102 33.2 32.6 102
South Brush Creek 8495 .4 .0 * 17.0 19.4 88
Tower 10620 36.1 40.8 88 49.3 49.6 99
Webber Springs 9260 8.8 7.5 117 30.6 32.2 95
Whiskey Park 9020 -M 16.7 * 35.2 36.0 98
Willow Creek Pass 9523 6.2 7.8 79 19.6 18.0 109
Zirkel 9338 1.0 2.4 42* 37.5 36.3 103
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Basin Index (%) 89 96
SWEETWATER
Deer Park 9700 10.9 8.5 128 22.5 24.5 92
Larsen Creek 9000 -M .0 * 16.1 17.0 95
South Pass 9040 6.1 6.7 91 19.1 20.7 92
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Basin Index (%) 112 93
LOWER N. PLATTE
Casper Mtn. 7920 .6 .6 100* 20.1 19.8 102
Laprele Creek 8390 .1 .0 * 15.8 17.4 91
Reno Hill 8430 7.0 .8 875* 23.6 22.4 105
Windy Peak 7915 .4 .0 * 13.9 15.4 90
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Basin Index (%) 579* 98
LARAMIE RIVER
Brooklyn Lake 10250 9.2 12.4 74 28.3 28.4 100
Cinnabar Park 9707 4.8 7.8 62 25.3 29.2 87
Crow Creek 8335 .2 .0 * 13.7 15.1 91
Deadman Hill 10239 9.9 13.3 74 24.9 24.0 104
Rawah 9069 .2 .0 * 22.0 20.8 106
Roach 9740 4.7 6.6 71 25.8 24.4 106
Windy Peak 7915 .4 .0 * 13.9 15.4 90
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Basin Index (%) 73 98
S. PLATTE
Crow Creek 8335 .2 .0 * 13.7 15.1 91
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Basin Index (%) * 91
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 19.3 19.5 99
Divide Peak 8730 .0 .4 0* 24.8 26.2 95
Elk River 8739 .1 .0 * 26.4 24.4 108
Elkhead Divide 8800 .0 -M * 25.6 -M *
Little Snake River 8928 6.9 8.8 78 37.0 39.8 93
Old Battle 9860 27.2 30.6 89 37.3 42.1 89
Sage Creek Basin 7850 -M .0 * 13.7 16.8 82
Sandstone RS 8152 .0 .0 * 19.2 22.0 87
Whiskey Park 9020 -M 16.7 * 35.2 36.0 98
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Basin Index (%) 86* 94
UPPER GREEN RIVER
Big Sandy Opening 9080 3.5 1.3 269* 16.1 17.1 94
Blind Bull Sum 8650 22.2 19.6 113 17.7 22.2 80
East Rim Divide 7930 .0 .0 * 12.9 14.5 89
Elkhart Park G.S. 9400 .2 2.9 7 12.3 16.8 73
Gros Ventre Summit 8750 1.3 1.1 118* 13.8 16.0 86
Gunsight Pass 9820 11.0 8.6 128 17.5 17.8 98
Indian Creek 9425 15.6 15.4 101 23.4 25.4 92
Kendall R.S. 7740 .0 .0 * 16.3 16.3 100
Larsen Creek 9000 -M .0 * 16.1 17.0 95
Loomis Park 8240 .0 .0 * 18.6 21.0 89
New Fork Lake 8340 .0 .0 * 11.6 14.3 81
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 18.7 17.0 110
Spring Creek Divide 9000 19.7 18.8 105 27.6 28.6 97
Triple Peak 8500 13.6 7.0 194 31.6 31.2 101
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Basin Index (%) 117* 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 .0 * 15.6 15.4 101
Buck Pasture 9632 .0 -M * 21.0 -M *
EF Blacks Fork GS 9360 .0 .0 * 17.7 16.6 107
Hams Fork 7840 .0 .0 * 13.7 14.6 94
Henrys Fork 10182 -M -M * 14.7 -M *
Hewinta 9500 .0 .0 * 18.2 17.3 105
Hickerson Park 9122 .0 .0 * 13.0 13.9 94
Hole-in-Rock 9168 .0 .0 * 13.3 13.8 96
Indian Creek 9425 15.6 15.4 101 23.4 25.4 92
Kelley R.S. 8180 .0 .0 * 19.6 21.5 91
Spirit Lk 10235 .0 1.9 0 18.5 20.5 90
Steel Creek Park 10158 7.4 11.7 63 21.4 21.0 102
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Basin Index (%) 79* 97
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 16.6 15.0 111
Bug Lake 7987 .0 .0 * 21.7 21.6 100
Burts Miller Ranch 8000 .0 .0 * 10.0 9.8 102
Chalk Creek #1 9171 4.7 8.5 55 27.5 29.8 92
Giveout 6930 .0 .0 * 14.7 16.5 89
Hayden Fork 9130 .0 .0 * 25.5 25.4 100
Kelley R.S. 8180 .0 .0 * 19.6 21.5 91
Lily Lake 9133 .0 .0 * 19.1 21.0 91
Monte Cristo 8932 7.6 11.3 67 29.3 30.2 97
Salt River Summit 7640 .0 .0 * 18.8 19.4 97
Spring Creek Divide 9000 19.7 18.8 105 27.6 28.6 97
Trial Lake 9992 .0 11.0 0 26.4 27.4 96
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Basin Index (%) 65* 96
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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.