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 30 , 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 * 22.4 25.2 89
Blind Bull Sum 8650 21.3 17.5 122 18.4 23.0 80
Cottonwood Creek 7670 2.6 .2 1300* 31.3 32.0 98
East Rim Divide 7930 .3 .0 * 14.1 14.8 95
Grand Targhee 9260 31.0 39.5 78 35.2 40.2 88
Granite Creek 6770 .1 .0 * 18.6 24.0 78
Grassy Lake 7265 9.6 7.8 123 37.9 43.0 88
Gros Ventre Summit 8750 1.7 .0 * 15.2 16.1 94
Gunsight Pass 9820 9.2 6.6 139 18.6 18.1 103
Lewis Lake Divide 7850 9.3 13.6 68 39.0 41.0 95
Loomis Park 8240 .1 .0 * 19.5 21.6 90
Phillips Bench 8200 9.9 10.4 95 29.2 31.7 92
Salt River Summit 7640 .0 .0 * 19.8 20.4 97
Snake River Station 6920 .1 .0 * 22.7 28.4 80
Somsen Ranch 6800 .0 .0 * -M 21.0 *
Spring Creek Divide 9000 16.7 15.3 109 28.5 29.4 97
Thumb Divide 7980 .8 .0 * 23.8 23.3 102
Togwotee Pass 9580 18.4 19.9 92 28.3 30.9 92
Triple Peak 8500 8.3 2.3 361* 32.3 32.0 101
Two Ocean Plateau 9240 27.9 27.0 103 32.8 33.2 99
Willow Creek 8080 11.2 6.9 162 40.7 41.6 98
Younts Peak 8350 .0 .6 0* 16.6 20.0 83
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Basin Index (%) 107* 92
MADISON HEADWATERS IN WYOMING
Black Bear 8170 23.7 28.7 83 38.8 45.4 85
Canyon 7870 2.2 -M * 18.6 -M *
Madison Plateau 7750 8.7 9.3 94 28.0 31.8 88
West Yellowstone 6700 .0 .0 * 17.9 18.2 98
Whiskey Creek 6800 .4 .0 * -M 26.1 *
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Basin Index (%) 86 89
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 20.1 19.8 102 23.0 26.9 86
Canyon 7870 2.2 -M * 18.6 -M *
Evening Star 9200 25.5 20.8 123 32.4 36.0 90
Fisher Creek 9100 33.3 30.6 109 41.0 42.0 98
Monument Peak 8850 17.1 15.3 112 30.0 28.1 107
Northeast Entrance 7350 -M .0 * -M 17.2 *
Parker Peak 9400 22.5 15.2 148 28.7 25.2 114
Sylvan Lake 8420 8.4 7.4 114 29.6 29.8 99
Thumb Divide 7980 .8 .0 * 23.8 23.3 102
Two Ocean Plateau 9240 27.9 27.0 103 32.8 33.2 99
White Mill 8700 -M 18.6 * -M 28.8 *
Wolverine 7650 -M .0 * -M 16.1 *
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Basin Index (%) 114 99
WIND RIVER
Burroughs Creek 8750 .8 -M * 18.8 -M *
Castle Creek 8400 .0 .0 * 11.6 13.2 88
Cold Springs 9630 .1 .0 * 17.2 15.6 110
Deer Park 9700 6.4 5.2 123 22.7 24.8 92
Hobbs Park 10100 13.8 7.2 192 23.2 20.4 114
Kirwin 9550 5.4 2.8 193 19.4 18.2 107
Little Warm 9370 1.6 .0 * 18.6 16.5 113
South Pass 9040 .8 1.1 73* 19.4 21.2 92
St. Lawrence Alt 8620 .0 -M * 13.3 -M *
Togwotee Pass 9580 18.4 19.9 92 28.3 30.9 92
Townsend Creek 8700 .0 .0 * 18.3 18.0 102
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Basin Index (%) 128* 100
BIGHORN BASIN
Bald Mtn. 9380 16.0 14.1 113 20.6 22.0 94
Bear Trap Meadow 8200 .1 .0 * 14.5 13.7 106
Bone Springs Div 9350 13.2 9.9 133 18.2 21.0 87
Grave Springs 8550 .0 .0 * 14.7 14.6 101
Kirwin 9550 5.4 2.8 193 19.4 18.2 107
Marquette 8760 -M .3 * 15.2 17.2 88
Middle Powder 7760 .1 .0 * 15.0 15.4 97
Owl Creek 8975 .3 .0 * 11.7 11.4 103
Powder River Pass 9480 .7 .0 * 13.5 18.4 73
Shell Creek 9580 13.0 9.3 140 19.8 19.4 102
Timber Creek 7950 .8 .0 * 14.4 13.8 104
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Basin Index (%) 137* 96
SHOSHONE RIVER
Blackwater 9780 26.1 21.6 121 31.5 30.0 105
Evening Star 9200 25.5 20.8 123 32.4 36.0 90
Marquette 8760 -M .3 * 15.2 17.2 88
Sylvan Lake 8420 8.4 7.4 114 29.6 29.8 99
Sylvan Road 7120 -M .0 * -M 21.1 *
Younts Peak 8350 .0 .6 0* 16.6 20.0 83
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Basin Index (%) 119 94
POWDER RIVER
Bear Trap Meadow 8200 .1 .0 * 14.5 13.7 106
Cloud Peak Reservoir 9860 11.6 7.2 161 21.9 22.0 100
Grave Springs 8550 .0 .0 * 14.7 14.6 101
Hansen Sawmill 8360 .1 .0 * 13.8 14.8 93
Middle Powder 7760 .1 .0 * 15.0 15.4 97
Powder River Pass 9480 .7 .0 * 13.5 18.4 73
Soldier Park 8720 .4 .0 * 14.7 15.8 93
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Basin Index (%) 181* 94
TONGUE RIVER
Big Goose 7990 .6 .0 * 17.0 19.2 89
Bone Springs Div 9350 13.2 9.9 133 18.2 21.0 87
Burgess Junction 7880 7.2 .1 7200* 19.5 17.9 109
Dome Lake 8880 6.2 .1 6200* 20.1 20.7 97
Little Goose 8870 4.0 2.6 154 20.8 20.9 100
Sucker Creek 8880 7.6 1.2 633* 23.9 21.6 111
Tie Creek 6870 .1 .0 * 18.7 19.0 98
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Basin Index (%) 280* 99
BELLE FOURCHE
Blind Park 6890 .0 .0 * 16.4 16.4 100
Cole Canyon 5910 .0 .0 * 17.2 15.5 111
North Rapid Creek 6130 .2 .0 * 10.1 14.7 69
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Basin Index (%) * 94
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 16.4 16.4 100
North Rapid Creek 6130 .2 .0 * 10.1 14.7 69
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Basin Index (%) * 85
UPPER N. PLATTE
Arapaho Ridge 10976 9.6 11.6 83 27.0 28.6 94
Blackhall Mtn 9839 14.5 26.6 55 37.1 41.2 90
Cinnabar Park 9707 .4 4.3 9 25.5 29.4 87
Columbine 9167 .0 .0 * 31.0 31.8 97
Divide Peak 8730 .0 .0 * 25.1 26.8 94
Joe Wright 10158 17.7 14.5 122 39.0 34.6 113
Laprele Creek 8390 .0 .0 * 15.9 17.6 90
Med Bow 10512 28.7 -M * 38.3 -M *
Never Summer 10323 20.4 17.2 119 24.2 23.6 103
North French Creek 10153 19.2 22.2 86 33.8 36.9 92
Old Battle 9860 24.5 27.1 90 38.0 42.5 89
Rawah 9069 .0 .0 * 22.4 21.0 107
Sage Creek Basin 7850 -M .0 * 14.2 16.9 84
Sand Lake 10098 24.2 23.8 102 33.6 33.2 101
South Brush Creek 8495 .5 .0 * 17.3 19.8 87
Tower 10620 33.4 36.7 91 50.8 50.3 101
Webber Springs 9260 4.0 1.9 211* 31.3 32.4 97
Whiskey Park 9020 -M 9.0 * 35.9 36.0 100
Willow Creek Pass 9523 1.9 2.6 73 20.0 18.4 109
Zirkel 9338 .0 .0 * 38.7 36.4 106
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Basin Index (%) 90 97
SWEETWATER
Deer Park 9700 6.4 5.2 123 22.7 24.8 92
Larsen Creek 9000 .0 .0 * 16.2 17.2 94
South Pass 9040 .8 1.1 73* 19.4 21.2 92
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Basin Index (%) 114* 92
LOWER N. PLATTE
Casper Mtn. 7920 .0 .0 * 20.1 21.0 96
Laprele Creek 8390 .0 .0 * 15.9 17.6 90
Reno Hill 8430 1.6 .0 * 23.7 22.8 104
Windy Peak 7915 .2 .0 * 14.0 16.5 85
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Basin Index (%) * 95
LARAMIE RIVER
Brooklyn Lake 10250 4.7 7.4 64 28.5 28.7 99
Cinnabar Park 9707 .4 4.3 9 25.5 29.4 87
Crow Creek 8335 .0 .0 * 13.9 16.0 87
Deadman Hill 10239 6.7 9.2 73 25.1 24.2 104
Rawah 9069 .0 .0 * 22.4 21.0 107
Roach 9740 1.0 2.2 45 26.3 24.6 107
Windy Peak 7915 .2 .0 * 14.0 16.5 85
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Basin Index (%) 56 97
S. PLATTE
Crow Creek 8335 .0 .0 * 13.9 16.0 87
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Basin Index (%) * 87
LITTLE SNAKE RIVER
Battle Mountain 7498 -M .0 * 20.0 19.8 101
Divide Peak 8730 .0 .0 * 25.1 26.8 94
Elk River 8739 .1 .0 * 27.1 24.4 111
Elkhead Divide 8800 .0 -M * 26.5 -M *
Little Snake River 8928 1.2 3.7 32 37.7 40.4 93
Old Battle 9860 24.5 27.1 90 38.0 42.5 89
Sage Creek Basin 7850 -M .0 * 14.2 16.9 84
Sandstone RS 8152 .1 .0 * 19.9 22.0 90
Whiskey Park 9020 -M 9.0 * 35.9 36.0 100
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Basin Index (%) 84* 95
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 16.1 17.4 93
Blind Bull Sum 8650 21.3 17.5 122 18.4 23.0 80
East Rim Divide 7930 .3 .0 * 14.1 14.8 95
Elkhart Park G.S. 9400 .2 .1 200* 13.0 17.4 75
Gros Ventre Summit 8750 1.7 .0 * 15.2 16.1 94
Gunsight Pass 9820 9.2 6.6 139 18.6 18.1 103
Indian Creek 9425 11.8 12.5 94 24.2 25.8 94
Kendall R.S. 7740 .0 .0 * 17.1 17.1 100
Larsen Creek 9000 .0 .0 * 16.2 17.2 94
Loomis Park 8240 .1 .0 * 19.5 21.6 90
New Fork Lake 8340 .0 .0 * 12.5 15.2 82
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .0 .0 * 19.1 18.0 106
Spring Creek Divide 9000 16.7 15.3 109 28.5 29.4 97
Triple Peak 8500 8.3 2.3 361* 32.3 32.0 101
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Basin Index (%) 128* 94
LOWER GREEN RIVER
Blacks Fork Jct 8869 .8 .0 * 16.3 15.7 104
Buck Pasture 9632 .7 -M * 21.8 -M *
EF Blacks Fork GS 9360 .0 .0 * 19.1 16.8 114
Hams Fork 7840 .0 .0 * 14.1 14.8 95
Henrys Fork 10182 -M -M * 15.4 -M *
Hewinta 9500 .2 .0 * 18.9 17.8 106
Hickerson Park 9122 .3 .0 * 13.7 14.4 95
Hole-in-Rock 9168 .0 .0 * 13.9 13.9 100
Indian Creek 9425 11.8 12.5 94 24.2 25.8 94
Kelley R.S. 8180 .1 .0 * 20.6 22.2 93
Spirit Lk 10235 .4 .0 * 17.5 20.6 85
Steel Creek Park 10158 4.4 9.0 49 22.0 21.4 103
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Basin Index (%) 84* 98
UPPER BEAR RIVER
Bear River RS 8777 .2 .0 * 17.4 15.2 114
Bug Lake 7987 .2 .0 * 22.8 21.8 105
Burts Miller Ranch 8000 .0 .0 * 10.5 9.9 106
Chalk Creek #1 9171 1.5 3.8 39 28.5 29.8 96
Giveout 6930 .1 .0 * 15.3 16.8 91
Hayden Fork 9130 .4 .0 * 26.4 25.5 104
Kelley R.S. 8180 .1 .0 * 20.6 22.2 93
Lily Lake 9133 .6 .0 * 19.8 21.2 93
Monte Cristo 8932 2.9 6.2 47 30.7 30.6 100
Salt River Summit 7640 .0 .0 * 19.8 20.4 97
Spring Creek Divide 9000 16.7 15.3 109 28.5 29.4 97
Trial Lake 9992 .7 6.4 11 27.5 27.6 100
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Basin Index (%) 74* 99
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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.
