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 SUNDAY: FEBRUARY 20 , 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 15.7 85
Blind Bull Sum 8650 14.8 17.8 83 11.3 13.7 82
Cottonwood Creek 7670 12.8 16.2 79 18.7 18.6 101
East Rim Divide 7930 6.6 8.0 82 8.4 8.4 100
Grand Targhee 9260 23.1 31.8 73 21.3 24.8 86
Granite Creek 6770 8.6 13.4 64 11.4 15.2 75
Grassy Lake 7265 -M 24.4 * -M 26.6 *
Gros Ventre Summit 8750 8.2 9.2 89 8.6 8.7 99
Gunsight Pass 9820 9.5 9.4 101 10.2 10.4 98
Lewis Lake Divide 7850 18.8 22.2 85 25.7 25.4 101
Loomis Park 8240 8.8 11.4 77 11.7 12.6 93
Phillips Bench 8200 14.3 19.5 73 17.7 20.2 88
Salt River Summit 7640 8.3 10.1 82 12.6 11.6 109
Snake River Station 6920 9.4 13.7 69 15.1 16.8 90
Somsen Ranch 6800 9.3 9.8 95 14.1 12.6 112
Spring Creek Divide 9000 15.1 18.0 84 17.5 18.0 97
Thumb Divide 7980 11.3 11.5 98 13.9 12.7 109
Togwotee Pass 9580 15.0 17.2 87 16.1 18.4 88
Triple Peak 8500 15.1 16.8 90 19.1 18.8 102
Two Ocean Plateau 9240 20.2 21.6 94 18.3 18.9 97
Willow Creek 8080 16.7 21.2 79 23.3 23.7 98
Younts Peak 8350 10.9 11.0 99 8.3 11.0 75
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Basin Index (%) 83 94
MADISON HEADWATERS IN WYOMING
Black Bear 8170 24.0 27.6 87 25.0 26.2 95
Canyon 7870 7.0 -M * 9.7 -M *
Madison Plateau 7750 13.8 16.2 85 16.8 17.5 96
West Yellowstone 6700 7.1 8.4 85 10.3 10.6 97
Whiskey Creek 6800 9.1 11.3 81 -M 13.6 *
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Basin Index (%) 85 96
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 12.4 16.8 74 11.8 15.6 76
Canyon 7870 7.0 -M * 9.7 -M *
Evening Star 9200 19.3 20.3 95 19.0 21.9 87
Fisher Creek 9100 21.8 25.0 87 23.1 24.2 95
Monument Peak 8850 13.0 15.4 84 15.9 16.4 97
Northeast Entrance 7350 4.6 7.8 59 8.4 10.2 82
Parker Peak 9400 14.6 15.9 92 14.4 15.0 96
Sylvan Lake 8420 11.5 14.4 80 16.1 17.4 93
Thumb Divide 7980 11.3 11.5 98 13.9 12.7 109
Two Ocean Plateau 9240 20.2 21.6 94 18.3 18.9 97
White Mill 8700 14.2 17.8 80 14.4 17.0 85
Wolverine 7650 8.9 9.1 98 9.2 9.4 98
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Basin Index (%) 86 92
WIND RIVER
Burroughs Creek 8750 6.1 -M * 9.3 -M *
Castle Creek 8400 3.7 5.2 71 4.9 6.4 77
Cold Springs 9630 7.3 5.6 130 9.5 6.7 142
Deer Park 9700 8.5 9.6 89 11.8 12.2 97
Hobbs Park 10100 11.3 9.2 123 11.8 8.1 146
Kirwin 9550 8.7 7.6 114 9.8 8.4 117
Little Warm 9370 8.2 7.4 111 10.5 8.6 122
South Pass 9040 8.5 10.2 83 10.4 10.2 102
St. Lawrence Alt 8620 1.5 -M * 6.8 -M *
Togwotee Pass 9580 15.0 17.2 87 16.1 18.4 88
Townsend Creek 8700 6.4 6.1 105 9.2 7.6 121
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Basin Index (%) 99 109
BIGHORN BASIN
Bald Mtn. 9380 11.8 13.7 86 10.8 11.4 95
Bear Trap Meadow 8200 4.5 4.6 98 6.6 5.8 114
Bone Springs Div 9350 11.4 11.4 100 9.6 10.9 88
Grave Springs 8550 4.7 5.8 81 6.6 6.6 100
Kirwin 9550 8.7 7.6 114 9.8 8.4 117
Marquette 8760 2.8 4.8 58 6.3 6.4 98
Middle Powder 7760 5.8 7.0 83 7.0 6.7 104
Owl Creek 8975 4.5 3.9 115 5.4 4.4 123
Powder River Pass 9480 6.8 7.9 86 6.1 9.2 66
Shell Creek 9580 9.6 10.8 89 9.6 9.8 98
Timber Creek 7950 2.7 3.2 84 4.8 5.3 91
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Basin Index (%) 91 97
SHOSHONE RIVER
Blackwater 9780 14.7 16.4 90 16.0 16.0 100
Evening Star 9200 19.3 20.3 95 19.0 21.9 87
Marquette 8760 2.8 4.8 58 6.3 6.4 98
Sylvan Lake 8420 11.5 14.4 80 16.1 17.4 93
Sylvan Road 7120 5.9 9.0 66 -M 13.3 *
Younts Peak 8350 10.9 11.0 99 8.3 11.0 75
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Basin Index (%) 86 90
POWDER RIVER
Bear Trap Meadow 8200 4.5 4.6 98 6.6 5.8 114
Cloud Peak Reservoir 9860 9.8 10.2 96 10.6 9.5 112
Grave Springs 8550 4.7 5.8 81 6.6 6.6 100
Hansen Sawmill 8360 4.7 4.8 98 6.9 5.8 119
Middle Powder 7760 5.8 7.0 83 7.0 6.7 104
Powder River Pass 9480 6.8 7.9 86 6.1 9.2 66
Soldier Park 8720 2.0 4.7 43 7.0 6.6 106
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Basin Index (%) 85 101
TONGUE RIVER
Big Goose 7990 4.6 5.8 79 8.2 7.2 114
Bone Springs Div 9350 11.4 11.4 100 9.6 10.9 88
Burgess Junction 7880 7.8 7.6 103 9.8 8.6 114
Dome Lake 8880 7.4 8.0 92 9.6 8.6 112
Little Goose 8870 5.8 6.9 84 9.6 8.6 112
Sucker Creek 8880 8.8 8.8 100 11.7 9.6 122
Tie Creek 6870 3.3 4.1 80 8.9 7.8 114
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Basin Index (%) 93 110
BELLE FOURCHE
Blind Park 6890 3.9 5.8 67 6.7 7.9 85
Cole Canyon 5910 3.5 4.2 83 7.2 6.4 112
North Rapid Creek 6130 4.5 5.4 83 4.8 6.5 74
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Basin Index (%) 77 90
CHEYENNE RIVER BASIN
Blind Park 6890 3.9 5.8 67 6.7 7.9 85
North Rapid Creek 6130 4.5 5.4 83 4.8 6.5 74
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Basin Index (%) 75 80
UPPER N. PLATTE
Arapaho Ridge 10960 15.6 16.7 93 15.2 16.6 92
Blackhall Mtn 9820 21.8 21.5 101 23.2 21.5 108
Cinnabar Park 9574 14.1 16.0 88 16.6 17.8 93
Columbine 9160 14.7 17.4 84 18.3 17.8 103
Divide Peak 8880 11.2 14.2 79 15.8 16.0 99
Joe Wright 10120 16.2 14.6 111 22.2 18.6 119
Laprele Creek 8375 4.6 6.6 70 7.9 8.0 99
Med Bow 10500 23.7 -M * 22.8 -M *
Never Summer 10280 15.9 14.6 109 12.0 12.0 100
North French Creek 10130 18.5 19.8 93 20.0 18.9 106
Old Battle 10000 21.1 23.0 92 23.0 25.0 92
Rawah 9020 7.7 8.5 91 10.4 11.9 87
Sage Creek Basin 7850 7.0 11.3 62 8.2 10.1 81
Sand Lake 10050 18.8 19.0 99 19.3 17.0 114
South Brush Creek 8440 6.9 8.8 78 9.3 9.8 95
Tower 10500 28.8 31.9 90 30.0 29.4 102
Webber Springs 9250 15.7 16.0 98 19.2 18.8 102
Whiskey Park 8950 18.5 20.0 92 22.4 21.2 106
Willow Creek Pass 9540 10.6 10.0 106 11.2 10.2 110
Zirkel 9340 18.8 21.4 88 25.5 23.6 108
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Basin Index (%) 92 102
SWEETWATER
Deer Park 9700 8.5 9.6 89 11.8 12.2 97
Larsen Creek 9000 -M 7.8 * 8.7 9.7 90
South Pass 9040 8.5 10.2 83 10.4 10.2 102
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Basin Index (%) 86 96
LOWER N. PLATTE
Casper Mtn. 7900 7.2 9.0 80 11.9 9.4 127
Laprele Creek 8375 4.6 6.6 70 7.9 8.0 99
Reno Hill 8400 8.7 9.4 93 12.2 10.2 120
Windy Peak 7900 4.7 5.6 84 8.0 7.2 111
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Basin Index (%) 82 115
LARAMIE RIVER
Brooklyn Lake 10240 15.5 15.4 101 17.7 15.7 113
Cinnabar Park 9574 14.1 16.0 88 16.6 17.8 93
Crow Creek 8330 3.9 5.7 68 7.2 7.5 96
Deadman Hill 10220 15.0 12.4 121 13.6 12.4 110
Rawah 9020 7.7 8.5 91 10.4 11.9 87
Roach 9700 12.4 11.6 107 15.0 13.8 109
Windy Peak 7900 4.7 5.6 84 8.0 7.2 111
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Basin Index (%) 97 103
S. PLATTE
Crow Creek 8330 3.9 5.7 68 7.2 7.5 96
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Basin Index (%) 68 96
LITTLE SNAKE RIVER
Battle Mountain 7440 6.6 8.9 74 11.5 11.4 101
Divide Peak 8880 11.2 14.2 79 15.8 16.0 99
Elk River 8700 13.2 14.1 94 17.3 14.4 120
Elkhead Divide 8780 13.0 -M * 16.7 -M *
Little Snake River 8915 16.0 20.4 78 24.5 26.3 93
Old Battle 10000 21.1 23.0 92 23.0 25.0 92
Sage Creek Basin 7850 7.0 11.3 62 8.2 10.1 81
Sandstone RS 8150 8.8 9.9 89 11.7 13.4 87
Whiskey Park 8950 18.5 20.0 92 22.4 21.2 106
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Basin Index (%) 84 98
UPPER GREEN RIVER
Big Sandy Opening 9080 7.0 9.4 74 8.9 9.1 98
Blind Bull Sum 8650 14.8 17.8 83 11.3 13.7 82
East Rim Divide 7930 6.6 8.0 82 8.4 8.4 100
Elkhart Park G.S. 9400 5.9 9.0 66 6.8 9.4 72
Gros Ventre Summit 8750 8.2 9.2 89 8.6 8.7 99
Gunsight Pass 9820 9.5 9.4 101 10.2 10.4 98
Indian Creek 9425 14.8 16.8 88 14.9 14.6 102
Kendall R.S. 7740 7.2 9.4 77 10.7 10.3 104
Larsen Creek 9000 -M 7.8 * 8.7 9.7 90
Loomis Park 8240 8.8 11.4 77 11.7 12.6 93
New Fork Lake 8340 5.9 8.0 74 6.8 8.0 85
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 7.3 9.8 74 12.5 10.2 123
Spring Creek Divide 9000 15.1 18.0 84 17.5 18.0 97
Triple Peak 8500 15.1 16.8 90 19.1 18.8 102
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Basin Index (%) 82 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.2 6.2 100 9.2 9.4 98
Buck Pasture 9632 8.9 -M * 12.1 -M *
EF Blacks Fork GS 9360 6.2 8.0 78 -M 8.0 *
Hams Fork 7840 7.0 8.5 82 9.3 8.1 115
Henrys Fork 10182 -M -M * 8.7 -M *
Hewinta 9500 6.1 6.9 88 11.2 9.9 113
Hickerson Park 9122 4.3 5.4 80 6.6 7.4 89
Hole-in-Rock 9168 4.0 5.1 78 6.9 7.1 97
Indian Creek 9425 14.8 16.8 88 14.9 14.6 102
Kelley R.S. 8180 8.2 10.8 76 13.3 12.4 107
Spirit Lk 10235 8.7 8.4 104 11.7 11.8 99
Steel Creek Park 10158 10.6 10.4 102 13.1 11.8 111
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Basin Index (%) 88 104
UPPER BEAR RIVER
Bear River RS 8777 6.6 7.0 94 10.3 8.8 117
Bug Lake 7987 10.8 14.1 77 14.8 13.8 107
Burts Miller Ranch 8000 4.5 5.0 90 5.6 5.5 102
Chalk Creek #1 9171 13.1 16.0 82 16.8 16.8 100
Giveout 6930 5.7 7.7 74 9.9 9.2 108
Hayden Fork 9130 10.5 11.2 94 16.5 15.0 110
Kelley R.S. 8180 8.2 10.8 76 13.3 12.4 107
Lily Lake 9133 7.5 9.5 79 12.0 11.5 104
Monte Cristo 8932 16.2 19.2 84 20.3 18.8 108
Salt River Summit 7640 8.3 10.1 82 12.6 11.6 109
Spring Creek Divide 9000 15.1 18.0 84 17.5 18.0 97
Trial Lake 9992 13.5 16.4 82 17.1 16.8 102
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Basin Index (%) 83 105
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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.
