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 FRIDAY: FEBRUARY 18 , 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 10.6 14.0 76 13.4 15.6 86
Blind Bull Sum 8650 14.6 17.4 84 11.2 13.5 83
Cottonwood Creek 7670 12.9 15.9 81 18.7 17.8 105
East Rim Divide 7930 6.5 8.0 81 8.4 8.3 101
Grand Targhee 9260 23.1 31.8 73 21.1 24.6 86
Granite Creek 6770 8.6 13.2 65 11.8 14.4 82
Grassy Lake 7265 16.9 23.8 71 23.9 26.4 91
Gros Ventre Summit 8750 8.0 8.8 91 8.6 8.6 100
Gunsight Pass 9820 9.4 9.4 100 10.2 10.4 98
Lewis Lake Divide 7850 18.7 21.4 87 25.6 24.6 104
Loomis Park 8240 8.8 11.4 77 11.7 12.4 94
Phillips Bench 8200 14.2 18.7 76 17.6 19.8 89
Salt River Summit 7640 8.3 9.8 85 12.6 11.4 111
Snake River Station 6920 9.4 13.6 69 14.8 16.6 89
Somsen Ranch 6800 9.3 9.6 97 14.1 12.4 114
Spring Creek Divide 9000 15.0 17.6 85 17.3 17.6 98
Thumb Divide 7980 11.2 11.2 100 13.8 12.5 110
Togwotee Pass 9580 14.9 17.1 87 15.9 18.2 87
Triple Peak 8500 14.9 16.6 90 18.9 18.4 103
Two Ocean Plateau 9240 20.1 21.6 93 18.1 18.8 96
Willow Creek 8080 16.3 21.0 78 23.1 23.6 98
Younts Peak 8350 10.7 11.0 97 8.0 11.0 73
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Basin Index (%) 82 95
MADISON HEADWATERS IN WYOMING
Black Bear 8170 23.9 27.6 87 -M 26.0 *
Canyon 7870 6.9 -M * 9.6 -M *
Madison Plateau 7750 13.7 15.8 87 16.6 17.2 97
West Yellowstone 6700 7.1 8.1 88 10.3 10.4 99
Whiskey Creek 6800 9.0 11.2 80 -M 13.4 *
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Basin Index (%) 86 97
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 12.1 16.7 72 11.4 15.4 74
Canyon 7870 6.9 -M * 9.6 -M *
Evening Star 9200 18.9 20.2 94 18.6 21.5 87
Fisher Creek 9100 21.3 24.5 87 22.7 23.9 95
Monument Peak 8850 12.7 15.2 84 15.7 16.2 97
Northeast Entrance 7350 4.6 7.7 60 8.4 10.0 84
Parker Peak 9400 14.2 15.9 89 14.1 15.0 94
Sylvan Lake 8420 11.4 14.0 81 16.0 17.1 94
Thumb Divide 7980 11.2 11.2 100 13.8 12.5 110
Two Ocean Plateau 9240 20.1 21.6 93 18.1 18.8 96
White Mill 8700 13.9 17.6 79 14.1 16.6 85
Wolverine 7650 8.8 9.0 98 9.1 9.3 98
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Basin Index (%) 86 92
WIND RIVER
Burroughs Creek 8750 6.0 -M * 9.1 -M *
Castle Creek 8400 3.6 5.2 69 4.8 6.4 75
Cold Springs 9630 7.2 5.5 131 9.5 6.6 144
Deer Park 9700 8.5 9.4 90 11.6 12.1 96
Hobbs Park 10100 11.1 9.0 123 11.6 8.1 143
Kirwin 9550 8.6 7.5 115 9.7 8.4 115
Little Warm 9370 8.1 7.4 109 10.5 8.6 122
South Pass 9040 8.5 10.2 83 10.2 10.2 100
St. Lawrence Alt 8620 1.4 -M * 6.7 -M *
Togwotee Pass 9580 14.9 17.1 87 15.9 18.2 87
Townsend Creek 8700 6.4 6.0 107 9.2 7.6 121
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Basin Index (%) 99 108
BIGHORN BASIN
Bald Mtn. 9380 11.5 13.5 85 10.7 11.2 96
Bear Trap Meadow 8200 4.3 4.6 93 6.4 5.8 110
Bone Springs Div 9350 11.1 11.4 97 9.4 10.8 87
Grave Springs 8550 4.5 5.8 78 6.6 6.4 103
Kirwin 9550 8.6 7.5 115 9.7 8.4 115
Marquette 8760 3.0 4.8 62 6.2 6.3 98
Middle Powder 7760 5.8 7.0 83 6.9 6.7 103
Owl Creek 8975 4.4 3.9 113 5.2 4.3 121
Powder River Pass 9480 6.8 7.8 87 6.0 9.0 67
Shell Creek 9580 9.4 10.7 88 9.5 9.8 97
Timber Creek 7950 2.8 3.2 88 4.7 5.3 89
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Basin Index (%) 90 97
SHOSHONE RIVER
Blackwater 9780 14.6 16.5 88 15.7 15.9 99
Evening Star 9200 18.9 20.2 94 18.6 21.5 87
Marquette 8760 3.0 4.8 62 6.2 6.3 98
Sylvan Lake 8420 11.4 14.0 81 16.0 17.1 94
Sylvan Road 7120 5.9 9.0 66 -M 13.2 *
Younts Peak 8350 10.7 11.0 97 8.0 11.0 73
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Basin Index (%) 85 90
POWDER RIVER
Bear Trap Meadow 8200 4.3 4.6 93 6.4 5.8 110
Cloud Peak Reservoir 9860 9.7 10.2 95 10.5 9.2 114
Grave Springs 8550 4.5 5.8 78 6.6 6.4 103
Hansen Sawmill 8360 4.5 4.6 98 6.7 5.6 120
Middle Powder 7760 5.8 7.0 83 6.9 6.7 103
Powder River Pass 9480 6.8 7.8 87 6.0 9.0 67
Soldier Park 8720 1.8 4.6 39 6.9 6.5 106
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Basin Index (%) 84 102
TONGUE RIVER
Big Goose 7990 4.5 5.6 80 8.3 7.0 119
Bone Springs Div 9350 11.1 11.4 97 9.4 10.8 87
Burgess Junction 7880 7.7 7.6 101 9.8 8.4 117
Dome Lake 8880 7.2 7.9 91 9.4 8.6 109
Little Goose 8870 5.7 6.8 84 9.6 8.5 113
Sucker Creek 8880 8.7 8.6 101 11.6 9.6 121
Tie Creek 6870 3.2 4.1 78 8.9 7.8 114
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Basin Index (%) 92 110
BELLE FOURCHE
Blind Park 6890 3.9 5.8 67 6.6 7.8 85
Cole Canyon 5910 3.4 4.4 77 7.1 6.4 111
North Rapid Creek 6130 4.4 5.4 81 4.8 6.4 75
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Basin Index (%) 75 90
CHEYENNE RIVER BASIN
Blind Park 6890 3.9 5.8 67 6.6 7.8 85
North Rapid Creek 6130 4.4 5.4 81 4.8 6.4 75
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Basin Index (%) 74 80
UPPER N. PLATTE
Arapaho Ridge 10960 15.5 16.3 95 15.1 16.4 92
Blackhall Mtn 9820 21.6 20.6 105 23.1 20.8 111
Cinnabar Park 9574 13.9 15.8 88 16.4 17.7 93
Columbine 9160 14.5 17.1 85 18.2 17.6 103
Divide Peak 8880 10.9 13.8 79 15.7 15.4 102
Joe Wright 10120 16.0 14.5 110 22.2 18.4 121
Laprele Creek 8375 4.5 6.4 70 7.9 7.8 101
Med Bow 10500 23.5 -M * 22.6 -M *
Never Summer 10280 15.8 14.4 110 12.0 11.8 102
North French Creek 10130 18.1 19.6 92 19.8 18.7 106
Old Battle 10000 20.9 22.4 93 22.7 24.7 92
Rawah 9020 7.7 8.4 92 10.5 11.8 89
Sage Creek Basin 7850 6.9 11.0 63 8.2 9.8 84
Sand Lake 10050 18.6 18.6 100 19.1 16.8 114
South Brush Creek 8440 6.8 8.4 81 9.2 9.7 95
Tower 10500 28.5 30.8 93 29.8 28.6 104
Webber Springs 9250 15.6 15.6 100 19.1 18.4 104
Whiskey Park 8950 18.0 19.6 92 22.3 20.7 108
Willow Creek Pass 9540 10.5 9.8 107 11.2 10.0 112
Zirkel 9340 18.6 21.0 89 25.3 22.9 110
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Basin Index (%) 93 103
SWEETWATER
Deer Park 9700 8.5 9.4 90 11.6 12.1 96
Larsen Creek 9000 -M 7.7 * 8.7 9.6 91
South Pass 9040 8.5 10.2 83 10.2 10.2 100
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Basin Index (%) 87 96
LOWER N. PLATTE
Casper Mtn. 7900 7.2 8.9 81 11.8 9.2 128
Laprele Creek 8375 4.5 6.4 70 7.9 7.8 101
Reno Hill 8400 8.6 9.3 92 12.2 9.8 124
Windy Peak 7900 4.6 5.5 84 7.9 7.2 110
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Basin Index (%) 83 117
LARAMIE RIVER
Brooklyn Lake 10240 15.3 15.2 101 17.6 15.4 114
Cinnabar Park 9574 13.9 15.8 88 16.4 17.7 93
Crow Creek 8330 3.8 5.8 66 7.1 7.4 96
Deadman Hill 10220 14.6 12.2 120 13.4 12.1 111
Rawah 9020 7.7 8.4 92 10.5 11.8 89
Roach 9700 12.2 11.5 106 14.8 13.3 111
Windy Peak 7900 4.6 5.5 84 7.9 7.2 110
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Basin Index (%) 97 103
S. PLATTE
Crow Creek 8330 3.8 5.8 66 7.1 7.4 96
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Basin Index (%) 66 96
LITTLE SNAKE RIVER
Battle Mountain 7440 6.6 8.8 75 11.6 11.2 104
Divide Peak 8880 10.9 13.8 79 15.7 15.4 102
Elk River 8700 12.7 13.8 92 17.2 14.0 123
Elkhead Divide 8780 12.7 -M * 16.7 -M *
Little Snake River 8915 15.8 20.0 79 24.4 24.9 98
Old Battle 10000 20.9 22.4 93 22.7 24.7 92
Sage Creek Basin 7850 6.9 11.0 63 8.2 9.8 84
Sandstone RS 8150 8.6 9.6 90 11.7 13.3 88
Whiskey Park 8950 18.0 19.6 92 22.3 20.7 108
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Basin Index (%) 84 100
UPPER GREEN RIVER
Big Sandy Opening 9080 6.8 9.2 74 8.7 8.8 99
Blind Bull Sum 8650 14.6 17.4 84 11.2 13.5 83
East Rim Divide 7930 6.5 8.0 81 8.4 8.3 101
Elkhart Park G.S. 9400 5.7 8.8 65 6.7 9.2 73
Gros Ventre Summit 8750 8.0 8.8 91 8.6 8.6 100
Gunsight Pass 9820 9.4 9.4 100 10.2 10.4 98
Indian Creek 9425 14.6 16.6 88 14.9 14.6 102
Kendall R.S. 7740 7.0 8.8 80 10.7 10.1 106
Larsen Creek 9000 -M 7.7 * 8.7 9.6 91
Loomis Park 8240 8.8 11.4 77 11.7 12.4 94
New Fork Lake 8340 5.9 7.7 77 6.9 7.8 88
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.2 9.4 77 12.4 10.0 124
Spring Creek Divide 9000 15.0 17.6 85 17.3 17.6 98
Triple Peak 8500 14.9 16.6 90 18.9 18.4 103
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Basin Index (%) 83 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.2 6.2 100 9.2 9.2 100
Buck Pasture 9632 8.8 -M * 12.2 -M *
EF Blacks Fork GS 9360 6.1 7.7 79 -M 7.7 *
Hams Fork 7840 7.0 8.5 82 9.3 8.0 116
Henrys Fork 10182 -M -M * 8.8 -M *
Hewinta 9500 6.1 6.6 92 11.1 9.8 113
Hickerson Park 9122 4.4 5.3 83 6.6 7.3 90
Hole-in-Rock 9168 4.0 5.1 78 6.9 7.0 99
Indian Creek 9425 14.6 16.6 88 14.9 14.6 102
Kelley R.S. 8180 8.1 10.7 76 13.2 12.2 108
Spirit Lk 10235 8.7 8.1 107 11.7 11.8 99
Steel Creek Park 10158 10.5 10.4 101 13.1 11.4 115
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Basin Index (%) 89 105
UPPER BEAR RIVER
Bear River RS 8777 6.6 6.8 97 10.3 8.6 120
Bug Lake 7987 10.7 13.6 79 14.8 13.5 110
Burts Miller Ranch 8000 4.4 5.0 88 5.5 5.5 100
Chalk Creek #1 9171 13.0 15.8 82 16.8 16.2 104
Giveout 6930 5.7 7.3 78 9.9 9.2 108
Hayden Fork 9130 10.3 10.5 98 16.6 14.6 114
Kelley R.S. 8180 8.1 10.7 76 13.2 12.2 108
Lily Lake 9133 7.4 9.3 80 12.0 11.2 107
Monte Cristo 8932 16.0 18.8 85 20.6 18.6 111
Salt River Summit 7640 8.3 9.8 85 12.6 11.4 111
Spring Creek Divide 9000 15.0 17.6 85 17.3 17.6 98
Trial Lake 9992 13.5 15.9 85 17.2 16.6 104
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Basin Index (%) 84 107
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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.
