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 THURSDAY: MAY 26 , 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 19.0 117 17.8 22.4 79
Cottonwood Creek 7670 5.8 3.4 171 30.1 31.0 97
East Rim Divide 7930 .1 .0 * 12.9 14.6 88
Grand Targhee 9260 31.8 43.0 74 33.3 39.9 83
Granite Creek 6770 .0 .0 * 17.4 23.0 76
Grassy Lake 7265 13.0 11.3 115 36.4 42.6 85
Gros Ventre Summit 8750 1.3 .8 162* 13.9 16.0 87
Gunsight Pass 9820 10.3 8.6 120 17.5 17.8 98
Lewis Lake Divide 7850 13.3 18.0 74 37.2 40.4 92
Loomis Park 8240 .0 .0 * 18.5 21.1 88
Phillips Bench 8200 13.7 13.6 101 28.4 31.6 90
Salt River Summit 7640 .0 .0 * 18.8 19.6 96
Snake River Station 6920 .0 .0 * 21.4 28.2 76
Somsen Ranch 6800 .0 .0 * -M 20.5 *
Spring Creek Divide 9000 18.9 18.6 102 27.6 28.7 96
Thumb Divide 7980 3.4 .0 * 22.7 23.0 99
Togwotee Pass 9580 20.6 22.1 93 27.4 30.4 90
Triple Peak 8500 11.7 6.2 189 31.8 31.5 101
Two Ocean Plateau 9240 29.8 28.6 104 31.3 32.9 95
Willow Creek 8080 14.0 11.5 122 39.2 41.2 95
Younts Peak 8350 .4 2.8 14 16.3 19.8 82
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Basin Index (%) 101 90
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.4 32.8 80 36.1 45.3 80
Canyon 7870 4.5 -M * 16.7 -M *
Madison Plateau 7750 10.9 12.4 88 25.9 31.2 83
West Yellowstone 6700 .0 .0 * 16.4 17.8 92
Whiskey Creek 6800 3.9 1.6 244 -M 25.8 *
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Basin Index (%) 88 83
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.9 21.0 100 22.1 26.5 83
Canyon 7870 4.5 -M * 16.7 -M *
Evening Star 9200 28.1 22.2 127 31.5 35.2 89
Fisher Creek 9100 32.4 34.8 93 39.2 41.9 94
Monument Peak 8850 18.7 16.9 111 28.1 28.0 100
Northeast Entrance 7350 .0 .0 * 15.6 16.8 93
Parker Peak 9400 23.0 18.4 125 26.6 24.8 107
Sylvan Lake 8420 9.9 11.3 88 27.4 29.4 93
Thumb Divide 7980 3.4 .0 * 22.7 23.0 99
Two Ocean Plateau 9240 29.8 28.6 104 31.3 32.9 95
White Mill 8700 22.3 20.9 107 26.3 27.8 95
Wolverine 7650 .0 .0 * 16.9 16.0 106
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Basin Index (%) 108 95
WIND RIVER
Burroughs Creek 8750 1.4 -M * 17.8 -M *
Castle Creek 8400 .0 .0 * 10.9 12.4 88
Cold Springs 9630 .2 .0 * 17.0 14.8 115
Deer Park 9700 10.2 8.0 128 22.6 24.7 91
Hobbs Park 10100 17.3 11.2 154 23.2 20.0 116
Kirwin 9550 9.3 5.8 160 18.7 17.4 107
Little Warm 9370 5.3 .3 1767* 17.7 15.8 112
South Pass 9040 5.2 5.4 96 19.4 21.0 92
St. Lawrence Alt 8620 .0 -M * 13.3 -M *
Togwotee Pass 9580 20.6 22.1 93 27.4 30.4 90
Townsend Creek 8700 1.7 .0 * 18.3 18.0 102
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Basin Index (%) 132 100
BIGHORN BASIN
Bald Mtn. 9380 18.2 16.9 108 19.7 21.2 93
Bear Trap Meadow 8200 .1 .0 * 13.9 13.2 105
Bone Springs Div 9350 15.8 12.5 126 17.9 20.1 89
Grave Springs 8550 2.4 .0 * 14.4 13.8 104
Kirwin 9550 9.3 5.8 160 18.7 17.4 107
Marquette 8760 .8 .8 100* 13.8 16.4 84
Middle Powder 7760 3.9 .0 * 14.7 15.2 97
Owl Creek 8975 .2 .0 * 11.5 10.8 106
Powder River Pass 9480 3.9 2.0 195 13.4 18.2 74
Shell Creek 9580 -M 13.0 * -M 18.9 *
Timber Creek 7950 .1 .0 * 12.9 13.4 96
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Basin Index (%) 144* 94
SHOSHONE RIVER
Blackwater 9780 27.2 23.3 117 30.5 29.3 104
Evening Star 9200 28.1 22.2 127 31.5 35.2 89
Marquette 8760 .8 .8 100* 13.8 16.4 84
Sylvan Lake 8420 9.9 11.3 88 27.4 29.4 93
Sylvan Road 7120 .0 .0 * -M 20.2 *
Younts Peak 8350 .4 2.8 14 16.3 19.8 82
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Basin Index (%) 110 92
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 13.9 13.2 105
Cloud Peak Reservoir 9860 13.7 11.4 120 21.0 21.4 98
Grave Springs 8550 2.4 .0 * 14.4 13.8 104
Hansen Sawmill 8360 .1 .0 * 13.9 14.2 98
Middle Powder 7760 3.9 .0 * 14.7 15.2 97
Powder River Pass 9480 3.9 2.0 195 13.4 18.2 74
Soldier Park 8720 .4 1.0 40 14.2 15.0 95
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Basin Index (%) 170* 95
TONGUE RIVER
Big Goose 7990 3.1 .8 388* 16.3 18.6 88
Bone Springs Div 9350 15.8 12.5 126 17.9 20.1 89
Burgess Junction 7880 9.9 3.4 291 19.2 17.8 108
Dome Lake 8880 9.4 2.0 470 19.7 20.6 96
Little Goose 8870 6.7 4.7 143 20.0 20.0 100
Sucker Creek 8880 10.0 4.2 238 23.4 21.4 109
Tie Creek 6870 .0 .0 * 18.1 18.2 99
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Basin Index (%) 199 98
BELLE FOURCHE
Blind Park 6890 .0 .0 * 16.2 15.6 104
Cole Canyon 5910 .0 .0 * 16.7 14.6 114
North Rapid Creek 6130 .0 .0 * 10.0 13.6 74
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Basin Index (%) * 98
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.2 15.6 104
North Rapid Creek 6130 .0 .0 * 10.0 13.6 74
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Basin Index (%) * 90
UPPER N. PLATTE
Arapaho Ridge 10976 11.5 15.3 75 26.4 28.6 92
Blackhall Mtn 9839 18.6 28.7 65 36.5 40.6 90
Cinnabar Park 9707 4.2 7.6 55 25.3 29.3 86
Columbine 9167 .0 .0 * 30.2 31.5 96
Divide Peak 8730 .0 .2 0* 24.9 26.4 94
Joe Wright 10158 18.6 16.1 116 38.6 34.2 113
Laprele Creek 8390 .0 .0 * 15.8 17.5 90
Med Bow 10512 31.9 -M * 37.8 -M *
Never Summer 10323 22.3 18.8 119 23.6 23.1 102
North French Creek 10153 21.3 25.6 83 33.4 36.6 91
Old Battle 9860 26.8 30.0 89 37.4 42.2 89
Rawah 9069 .0 .0 * 22.0 20.8 106
Sage Creek Basin 7850 -M .0 * 13.8 16.9 82
Sand Lake 10098 26.4 26.4 100 33.5 32.7 102
South Brush Creek 8495 .4 .0 * 17.1 19.6 87
Tower 10620 35.8 39.9 90 49.4 49.8 99
Webber Springs 9260 8.3 6.7 124 30.8 32.2 96
Whiskey Park 9020 -M 15.0 * 35.2 36.0 98
Willow Creek Pass 9523 5.7 6.7 85 19.6 18.1 108
Zirkel 9338 .1 1.0 10* 37.5 36.4 103
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Basin Index (%) 90 96
SWEETWATER
Deer Park 9700 10.2 8.0 128 22.6 24.7 91
Larsen Creek 9000 -M .0 * 16.2 17.2 94
South Pass 9040 5.2 5.4 96 19.4 21.0 92
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Basin Index (%) 115 93
LOWER N. PLATTE
Casper Mtn. 7920 .1 .2 50* 20.1 20.0 100
Laprele Creek 8390 .0 .0 * 15.8 17.5 90
Reno Hill 8430 6.4 .4 1600* 23.5 22.4 105
Windy Peak 7915 .2 .0 * 13.9 15.7 89
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Basin Index (%) 1117* 97
LARAMIE RIVER
Brooklyn Lake 10250 8.7 11.6 75 28.4 28.5 100
Cinnabar Park 9707 4.2 7.6 55 25.3 29.3 86
Crow Creek 8335 .0 .0 * 13.7 15.1 91
Deadman Hill 10239 9.9 12.6 79 25.0 24.2 103
Rawah 9069 .0 .0 * 22.0 20.8 106
Roach 9740 3.8 5.6 68 25.9 24.5 106
Windy Peak 7915 .2 .0 * 13.9 15.7 89
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Basin Index (%) 72 98
S. PLATTE
Crow Creek 8335 .0 .0 * 13.7 15.1 91
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Basin Index (%) * 91
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * 19.3 19.8 97
Divide Peak 8730 .0 .2 0* 24.9 26.4 94
Elk River 8739 .0 .0 * 26.3 24.4 108
Elkhead Divide 8800 .0 -M * 25.7 -M *
Little Snake River 8928 6.5 7.8 83 37.0 40.3 92
Old Battle 9860 26.8 30.0 89 37.4 42.2 89
Sage Creek Basin 7850 -M .0 * 13.8 16.9 82
Sandstone RS 8152 .0 .0 * 19.2 22.0 87
Whiskey Park 9020 -M 15.0 * 35.2 36.0 98
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Basin Index (%) 88* 93
UPPER GREEN RIVER
Big Sandy Opening 9080 1.9 1.0 190* 16.0 17.2 93
Blind Bull Sum 8650 22.2 19.0 117 17.8 22.4 79
East Rim Divide 7930 .1 .0 * 12.9 14.6 88
Elkhart Park G.S. 9400 .1 2.4 4 12.4 17.0 73
Gros Ventre Summit 8750 1.3 .8 162* 13.9 16.0 87
Gunsight Pass 9820 10.3 8.6 120 17.5 17.8 98
Indian Creek 9425 14.2 15.2 93 23.5 25.4 93
Kendall R.S. 7740 .0 .0 * 16.3 16.4 99
Larsen Creek 9000 -M .0 * 16.2 17.2 94
Loomis Park 8240 .0 .0 * 18.5 21.1 88
New Fork Lake 8340 .0 .0 * 11.6 14.4 81
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 18.8 17.0 111
Spring Creek Divide 9000 18.9 18.6 102 27.6 28.7 96
Triple Peak 8500 11.7 6.2 189 31.8 31.5 101
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Basin Index (%) 112* 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 .0 * 15.6 15.4 101
Buck Pasture 9632 .0 -M * 21.0 -M *
EF Blacks Fork GS 9360 .0 .0 * 18.0 16.6 108
Hams Fork 7840 .0 .0 * 13.7 14.6 94
Henrys Fork 10182 -M -M * 14.6 -M *
Hewinta 9500 .0 .0 * 18.2 17.4 105
Hickerson Park 9122 .0 .0 * 12.9 14.0 92
Hole-in-Rock 9168 .0 .0 * 13.2 13.9 95
Indian Creek 9425 14.2 15.2 93 23.5 25.4 93
Kelley R.S. 8180 .0 .0 * 19.6 21.9 89
Spirit Lk 10235 .1 1.4 7* -M 20.6 *
Steel Creek Park 10158 6.3 11.5 55 21.3 21.0 101
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Basin Index (%) 75* 97
UPPER BEAR RIVER
Bear River RS 8777 .0 .0 * 16.6 15.0 111
Bug Lake 7987 .2 .0 * 21.7 21.7 100
Burts Miller Ranch 8000 -M .0 * 10.0 9.8 102
Chalk Creek #1 9171 3.2 7.4 43 27.6 29.8 93
Giveout 6930 .2 .0 * 14.7 16.6 89
Hayden Fork 9130 .0 .0 * 25.4 25.4 100
Kelley R.S. 8180 .0 .0 * 19.6 21.9 89
Lily Lake 9133 .1 .0 * 19.0 21.0 90
Monte Cristo 8932 5.9 9.6 61 29.3 30.4 96
Salt River Summit 7640 .0 .0 * 18.8 19.6 96
Spring Creek Divide 9000 18.9 18.6 102 27.6 28.7 96
Trial Lake 9992 .0 9.6 0 26.6 27.6 96
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Basin Index (%) 63* 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.