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: APRIL 27 , 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 11.4 11.9 96 18.6 22.1 84
Blind Bull Sum 8650 22.5 24.8 91 16.1 19.2 84
Cottonwood Creek 7670 17.8 19.4 92 26.5 27.4 97
East Rim Divide 7930 4.7 8.2 57 11.8 12.1 98
Grand Targhee 9260 32.8 47.6 69 28.6 35.8 80
Granite Creek 6770 10.6 11.0 96 -M 20.3 *
Grassy Lake 7265 23.8 31.0 77 33.5 37.8 89
Gros Ventre Summit 8750 11.7 12.7 92 12.1 14.1 86
Gunsight Pass 9820 13.4 13.4 100 15.0 15.7 96
Lewis Lake Divide 7850 24.9 31.2 80 33.5 36.0 93
Loomis Park 8240 10.1 11.6 87 17.1 17.6 97
Phillips Bench 8200 21.8 27.5 79 25.7 28.2 91
Salt River Summit 7640 12.2 9.7 126 17.5 17.4 101
Snake River Station 6920 8.9 13.0 68 19.7 24.0 82
Somsen Ranch 6800 8.5 4.1 207 -M 17.8 *
Spring Creek Divide 9000 23.2 25.2 92 25.2 25.2 100
Thumb Divide 7980 15.2 15.3 99 19.3 20.5 94
Togwotee Pass 9580 21.9 25.2 87 23.5 26.6 88
Triple Peak 8500 21.2 19.9 107 27.8 27.2 102
Two Ocean Plateau 9240 30.5 32.6 94 27.2 28.8 94
Willow Creek 8080 26.6 28.1 95 35.0 36.5 96
Younts Peak 8350 14.6 14.8 99 11.9 16.6 72
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Basin Index (%) 89 91
MADISON HEADWATERS IN WYOMING
Black Bear 8170 29.8 40.4 74 32.5 39.6 82
Canyon 7870 10.1 -M * 13.5 -M *
Madison Plateau 7750 18.9 23.1 82 22.8 27.1 84
West Yellowstone 6700 4.3 3.6 119 13.9 15.5 90
Whiskey Creek 6800 12.5 14.8 84 -M 22.2 *
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Basin Index (%) 80 84
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.9 24.0 79 18.3 22.4 82
Canyon 7870 10.1 -M * 13.5 -M *
Evening Star 9200 27.6 26.9 103 26.6 30.8 86
Fisher Creek 9100 31.0 35.8 87 32.8 36.0 91
Monument Peak 8850 18.4 22.4 82 22.4 24.4 92
Northeast Entrance 7350 4.0 4.5 89 12.1 14.1 86
Parker Peak 9400 21.9 23.2 94 21.9 22.0 100
Sylvan Lake 8420 16.0 20.6 78 23.0 25.9 89
Thumb Divide 7980 15.2 15.3 99 19.3 20.5 94
Two Ocean Plateau 9240 30.5 32.6 94 27.2 28.8 94
White Mill 8700 21.6 25.9 83 21.5 25.0 86
Wolverine 7650 9.9 5.2 190 13.7 13.4 102
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Basin Index (%) 91 91
WIND RIVER
Burroughs Creek 8750 9.6 -M * 15.4 -M *
Castle Creek 8400 3.7 1.8 206 -M 9.4 *
Cold Springs 9630 7.4 5.7 130 14.0 11.0 127
Deer Park 9700 13.7 15.6 88 18.8 20.9 90
Hobbs Park 10100 16.7 16.2 103 17.9 15.8 113
Kirwin 9550 14.2 12.1 117 15.3 14.0 109
Little Warm 9370 11.4 9.7 118 15.4 13.0 118
South Pass 9040 12.1 15.1 80 15.8 18.0 88
St. Lawrence Alt 8620 .1 -M * 10.2 -M *
Togwotee Pass 9580 21.9 25.2 87 23.5 26.6 88
Townsend Creek 8700 9.2 9.4 98 13.9 13.2 105
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Basin Index (%) 100 102
BIGHORN BASIN
Bald Mtn. 9380 18.0 20.5 88 15.8 18.0 88
Bear Trap Meadow 8200 5.1 3.3 155 10.8 10.6 102
Bone Springs Div 9350 17.5 17.4 101 14.4 17.8 81
Grave Springs 8550 9.0 8.6 105 11.4 11.8 97
Kirwin 9550 14.2 12.1 117 15.3 14.0 109
Marquette 8760 7.5 8.0 94 11.2 11.6 97
Middle Powder 7760 12.1 12.2 99 11.5 11.9 97
Owl Creek 8975 3.8 2.2 173 8.9 8.0 111
Powder River Pass 9480 9.3 10.7 87 10.8 15.2 71
Shell Creek 9580 -M 16.5 * -M 15.5 *
Timber Creek 7950 4.0 3.6 111 10.1 9.6 105
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Basin Index (%) 102 94
SHOSHONE RIVER
Blackwater 9780 23.5 25.3 93 24.7 24.6 100
Evening Star 9200 27.6 26.9 103 26.6 30.8 86
Marquette 8760 7.5 8.0 94 11.2 11.6 97
Sylvan Lake 8420 16.0 20.6 78 23.0 25.9 89
Sylvan Road 7120 1.5 7.1 21 -M 17.9 *
Younts Peak 8350 14.6 14.8 99 11.9 16.6 72
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Basin Index (%) 88 89
POWDER RIVER
Bear Trap Meadow 8200 5.1 3.3 155 10.8 10.6 102
Cloud Peak Reservoir 9860 15.6 16.0 98 17.1 16.3 105
Grave Springs 8550 9.0 8.6 105 11.4 11.8 97
Hansen Sawmill 8360 5.8 4.6 126 11.3 10.2 111
Middle Powder 7760 12.1 12.2 99 11.5 11.9 97
Powder River Pass 9480 9.3 10.7 87 10.8 15.2 71
Soldier Park 8720 5.2 6.0 87 11.9 11.1 107
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Basin Index (%) 101 97
TONGUE RIVER
Big Goose 7990 9.4 8.9 106 13.6 12.4 110
Bone Springs Div 9350 17.5 17.4 101 14.4 17.8 81
Burgess Junction 7880 13.5 12.1 112 15.7 14.3 110
Dome Lake 8880 14.5 11.1 131 16.0 15.6 103
Little Goose 8870 10.8 11.1 97 16.4 15.4 106
Sucker Creek 8880 14.0 13.2 106 19.1 16.7 114
Tie Creek 6870 5.0 2.7 185 14.5 13.5 107
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Basin Index (%) 111 104
BELLE FOURCHE
Blind Park 6890 1.4 2.6 54 12.6 13.1 96
Cole Canyon 5910 4.2 .6 700 13.2 10.8 122
North Rapid Creek 6130 3.3 2.0 165 8.0 10.7 75
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Basin Index (%) 171 98
CHEYENNE RIVER BASIN
Blind Park 6890 1.4 2.6 54 12.6 13.1 96
North Rapid Creek 6130 3.3 2.0 165 8.0 10.7 75
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Basin Index (%) 102 87
UPPER N. PLATTE
Arapaho Ridge 10976 21.1 23.8 89 23.0 25.0 92
Blackhall Mtn 9839 29.4 32.2 91 32.3 33.4 97
Cinnabar Park 9707 17.5 20.1 87 23.0 25.8 89
Columbine 9167 20.0 20.1 100 27.9 28.6 98
Divide Peak 8730 13.9 17.1 81 22.4 24.3 92
Joe Wright 10158 23.0 22.8 101 32.2 29.6 109
Laprele Creek 8390 7.2 7.2 100 13.8 14.2 97
Med Bow 10512 35.5 -M * 33.5 -M *
Never Summer 10323 24.1 22.1 109 19.1 19.2 99
North French Creek 10153 27.6 31.7 87 29.3 31.8 92
Old Battle 9860 31.5 35.6 88 34.2 37.0 92
Rawah 9069 10.6 8.3 128 17.5 18.6 94
Sage Creek Basin 7850 5.3 1.5 353 11.9 14.4 83
Sand Lake 10098 29.2 31.2 94 29.1 28.6 102
South Brush Creek 8495 6.2 8.0 78 14.1 15.6 90
Tower 10620 42.7 46.7 91 45.1 45.0 100
Webber Springs 9260 20.2 22.4 90 27.9 28.5 98
Whiskey Park 9020 27.6 27.0 102 32.3 31.5 103
Willow Creek Pass 9523 15.3 15.0 102 16.1 15.7 103
Zirkel 9338 21.2 24.4 87 34.7 34.4 101
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Basin Index (%) 94 97
SWEETWATER
Deer Park 9700 13.7 15.6 88 18.8 20.9 90
Larsen Creek 9000 -M 5.6 * 13.9 15.6 89
South Pass 9040 12.1 15.1 80 15.8 18.0 88
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Basin Index (%) 84 89
LOWER N. PLATTE
Casper Mtn. 7920 13.0 13.6 96 18.2 17.3 105
Laprele Creek 8390 7.2 7.2 100 13.8 14.2 97
Reno Hill 8430 15.3 14.0 109 21.0 18.0 117
Windy Peak 7915 6.6 5.4 122 12.4 12.4 100
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Basin Index (%) 105 106
LARAMIE RIVER
Brooklyn Lake 10250 21.1 23.3 91 25.5 24.8 103
Cinnabar Park 9707 17.5 20.1 87 23.0 25.8 89
Crow Creek 8335 .0 .0 * 11.1 12.3 90
Deadman Hill 10239 21.1 19.4 109 20.6 20.8 99
Rawah 9069 10.6 8.3 128 17.5 18.6 94
Roach 9740 16.4 16.4 100 22.3 21.2 105
Windy Peak 7915 6.6 5.4 122 12.4 12.4 100
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Basin Index (%) 100 97
S. PLATTE
Crow Creek 8335 .0 .0 * 11.1 12.3 90
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Basin Index (%) * 90
LITTLE SNAKE RIVER
Battle Mountain 7498 1.6 1.6 100 17.5 17.2 102
Divide Peak 8730 13.9 17.1 81 22.4 24.3 92
Elk River 8739 14.5 13.6 107 24.2 21.8 111
Elkhead Divide 8800 15.6 -M * 23.7 -M *
Little Snake River 8928 20.8 24.3 86 34.1 36.2 94
Old Battle 9860 31.5 35.6 88 34.2 37.0 92
Sage Creek Basin 7850 5.3 1.5 353 11.9 14.4 83
Sandstone RS 8152 8.4 7.4 114 17.3 19.2 90
Whiskey Park 9020 27.6 27.0 102 32.3 31.5 103
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Basin Index (%) 96 96
UPPER GREEN RIVER
Big Sandy Opening 9080 11.5 12.4 93 14.1 14.8 95
Blind Bull Sum 8650 22.5 24.8 91 16.1 19.2 84
East Rim Divide 7930 4.7 8.2 57 11.8 12.1 98
Elkhart Park G.S. 9400 9.1 11.9 76 10.8 13.8 78
Gros Ventre Summit 8750 11.7 12.7 92 12.1 14.1 86
Gunsight Pass 9820 13.4 13.4 100 15.0 15.7 96
Indian Creek 9425 22.7 23.2 98 21.4 20.9 102
Kendall R.S. 7740 6.4 6.2 103 14.9 14.0 106
Larsen Creek 9000 -M 5.6 * 13.9 15.6 89
Loomis Park 8240 10.1 11.6 87 17.1 17.6 97
New Fork Lake 8340 6.1 7.1 86 10.4 11.6 90
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.8 8.8 89 16.9 14.8 114
Spring Creek Divide 9000 23.2 25.2 92 25.2 25.2 100
Triple Peak 8500 21.2 19.9 107 27.8 27.2 102
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Basin Index (%) 92 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.0 5.2 96 13.9 14.0 99
Buck Pasture 9632 12.6 -M * 18.2 -M *
EF Blacks Fork GS 9360 5.4 8.4 64 13.2 13.2 100
Hams Fork 7840 3.8 5.4 70 12.7 11.8 108
Henrys Fork 10182 -M -M * 12.6 -M *
Hewinta 9500 6.0 6.6 91 15.7 15.5 101
Hickerson Park 9122 1.8 4.8 38 11.5 11.9 97
Hole-in-Rock 9168 .8 4.2 19 10.6 11.6 91
Indian Creek 9425 22.7 23.2 98 21.4 20.9 102
Kelley R.S. 8180 10.8 12.6 86 17.8 17.8 100
Spirit Lk 10235 8.8 13.0 68 17.4 19.4 90
Steel Creek Park 10158 15.2 16.8 90 18.8 18.2 103
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Basin Index (%) 80 99
UPPER BEAR RIVER
Bear River RS 8777 .8 1.2 67 15.1 13.8 109
Bug Lake 7987 15.4 15.6 99 20.4 19.2 106
Burts Miller Ranch 8000 .0 .0 * 8.8 8.7 101
Chalk Creek #1 9171 20.1 21.6 93 25.2 25.2 100
Giveout 6930 .2 .0 * 13.5 13.6 99
Hayden Fork 9130 5.5 10.2 54 23.5 22.4 105
Kelley R.S. 8180 10.8 12.6 86 17.8 17.8 100
Lily Lake 9133 9.3 10.2 91 17.2 17.4 99
Monte Cristo 8932 22.3 26.2 85 27.6 27.8 99
Salt River Summit 7640 12.2 9.7 126 17.5 17.4 101
Spring Creek Divide 9000 23.2 25.2 92 25.2 25.2 100
Trial Lake 9992 22.2 22.9 97 24.1 24.4 99
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Basin Index (%) 91 101
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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.
