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: MARCH 21 , 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 12.3 16.2 76 15.0 18.6 81
Blind Bull Sum 8650 16.9 22.3 76 12.3 16.6 74
Cottonwood Creek 7670 15.5 19.8 78 21.3 22.6 94
East Rim Divide 7930 8.1 10.0 81 9.9 10.3 96
Grand Targhee 9260 27.9 37.2 75 24.8 28.0 89
Granite Creek 6770 10.7 15.8 68 12.2 16.9 72
Grassy Lake 7265 20.3 29.8 68 27.9 32.0 87
Gros Ventre Summit 8750 9.8 11.4 86 9.6 11.1 86
Gunsight Pass 9820 11.6 12.1 96 12.1 12.7 95
Lewis Lake Divide 7850 21.3 29.0 73 28.7 29.6 97
Loomis Park 8240 10.8 14.2 76 13.5 15.6 87
Phillips Bench 8200 17.4 23.6 74 20.8 24.0 87
Salt River Summit 7640 11.0 12.3 89 14.4 13.8 104
Snake River Station 6920 10.8 16.5 65 16.6 19.8 84
Somsen Ranch 6800 10.5 11.5 91 15.1 14.7 103
Spring Creek Divide 9000 17.4 22.6 77 19.6 22.0 89
Thumb Divide 7980 13.5 14.8 91 15.9 15.5 103
Togwotee Pass 9580 18.0 21.6 83 18.7 22.6 83
Triple Peak 8500 17.1 21.8 78 21.4 23.2 92
Two Ocean Plateau 9240 23.6 26.5 89 21.2 23.5 90
Willow Creek 8080 20.8 27.0 77 26.9 30.0 90
Younts Peak 8350 12.4 13.6 91 8.8 13.2 67
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Basin Index (%) 79 89
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.3 36.2 75 27.8 33.4 83
Canyon 7870 7.9 -M * 10.5 -M *
Madison Plateau 7750 15.4 20.6 75 18.6 22.4 83
West Yellowstone 6700 7.9 10.2 77 11.1 13.0 85
Whiskey Creek 6800 10.1 14.4 70 -M 17.6 *
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Basin Index (%) 75 84
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.0 20.0 75 14.0 18.3 77
Canyon 7870 7.9 -M * 10.5 -M *
Evening Star 9200 22.5 23.7 95 22.2 25.8 86
Fisher Creek 9100 25.2 29.8 85 26.4 29.5 89
Monument Peak 8850 14.8 18.8 79 17.8 19.3 92
Northeast Entrance 7350 5.7 9.9 58 9.7 11.9 82
Parker Peak 9400 17.5 19.3 91 17.0 18.4 92
Sylvan Lake 8420 14.0 18.6 75 18.6 20.6 90
Thumb Divide 7980 13.5 14.8 91 15.9 15.5 103
Two Ocean Plateau 9240 23.6 26.5 89 21.2 23.5 90
White Mill 8700 17.3 21.6 80 16.8 21.0 80
Wolverine 7650 9.4 10.6 89 10.6 11.2 95
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Basin Index (%) 84 88
WIND RIVER
Burroughs Creek 8750 8.0 -M * 10.7 -M *
Castle Creek 8400 5.2 7.1 73 5.6 7.8 72
Cold Springs 9630 8.7 6.4 136 10.9 7.8 140
Deer Park 9700 10.4 12.8 81 13.7 16.2 85
Hobbs Park 10100 13.1 12.2 107 13.6 11.0 124
Kirwin 9550 9.8 9.4 104 10.9 10.3 106
Little Warm 9370 9.9 9.1 109 12.2 11.0 111
South Pass 9040 9.9 13.4 74 12.2 13.7 89
St. Lawrence Alt 8620 2.2 -M * 7.9 -M *
Togwotee Pass 9580 18.0 21.6 83 18.7 22.6 83
Townsend Creek 8700 8.1 8.1 100 10.9 9.0 121
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Basin Index (%) 93 99
BIGHORN BASIN
Bald Mtn. 9380 13.5 16.4 82 12.6 14.2 89
Bear Trap Meadow 8200 6.0 5.8 103 8.2 7.2 114
Bone Springs Div 9350 13.0 14.6 89 11.1 13.4 83
Grave Springs 8550 5.8 7.8 74 7.4 8.4 88
Kirwin 9550 9.8 9.4 104 10.9 10.3 106
Marquette 8760 3.9 6.2 63 7.3 7.7 95
Middle Powder 7760 7.6 9.4 81 8.3 8.8 94
Owl Creek 8975 6.0 4.8 125 6.5 5.2 125
Powder River Pass 9480 9.3 9.9 94 8.2 11.2 73
Shell Creek 9580 11.7 13.1 89 11.8 12.0 98
Timber Creek 7950 3.8 4.1 93 6.0 6.6 91
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Basin Index (%) 89 94
SHOSHONE RIVER
Blackwater 9780 17.1 20.4 84 18.6 19.7 94
Evening Star 9200 22.5 23.7 95 22.2 25.8 86
Marquette 8760 3.9 6.2 63 7.3 7.7 95
Sylvan Lake 8420 14.0 18.6 75 18.6 20.6 90
Sylvan Road 7120 7.0 11.3 62 -M 15.1 *
Younts Peak 8350 12.4 13.6 91 8.8 13.2 67
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Basin Index (%) 82 87
POWDER RIVER
Bear Trap Meadow 8200 6.0 5.8 103 8.2 7.2 114
Cloud Peak Reservoir 9860 11.9 13.2 90 12.5 11.6 108
Grave Springs 8550 5.8 7.8 74 7.4 8.4 88
Hansen Sawmill 8360 6.4 5.8 110 8.6 7.6 113
Middle Powder 7760 7.6 9.4 81 8.3 8.8 94
Powder River Pass 9480 9.3 9.9 94 8.2 11.2 73
Soldier Park 8720 3.6 5.9 61 8.8 8.0 110
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Basin Index (%) 88 99
TONGUE RIVER
Big Goose 7990 6.2 7.3 85 9.8 8.7 113
Bone Springs Div 9350 13.0 14.6 89 11.1 13.4 83
Burgess Junction 7880 9.0 9.5 95 11.0 10.4 106
Dome Lake 8880 10.5 10.2 103 11.6 11.1 105
Little Goose 8870 8.0 8.3 96 11.7 10.0 117
Sucker Creek 8880 10.1 11.0 92 13.4 12.2 110
Tie Creek 6870 3.7 4.8 77 10.0 9.2 109
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Basin Index (%) 92 105
BELLE FOURCHE
Blind Park 6890 3.0 7.2 42 7.2 9.8 73
Cole Canyon 5910 3.5 5.1 69 7.7 7.6 101
North Rapid Creek 6130 4.9 6.5 75 5.1 8.0 64
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Basin Index (%) 61 79
CHEYENNE RIVER BASIN
Blind Park 6890 3.0 7.2 42 7.2 9.8 73
North Rapid Creek 6130 4.9 6.5 75 5.1 8.0 64
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Basin Index (%) 58 69
UPPER N. PLATTE
Arapaho Ridge 10960 18.5 19.4 95 17.8 19.2 93
Blackhall Mtn 9820 26.3 26.9 98 27.1 26.1 104
Cinnabar Park 9574 16.8 18.1 93 19.1 21.0 91
Columbine 9160 19.0 21.5 88 21.2 21.7 98
Divide Peak 8880 14.1 17.3 82 18.5 19.2 96
Joe Wright 10120 19.2 18.2 105 25.2 23.2 109
Laprele Creek 8375 6.6 8.8 75 10.4 10.2 102
Med Bow 10500 28.2 -M * 26.0 -M *
Never Summer 10280 18.9 17.8 106 14.5 14.6 99
North French Creek 10130 21.4 24.8 86 22.7 23.5 97
Old Battle 10000 25.4 26.5 96 27.6 29.9 92
Rawah 9020 9.8 9.9 99 12.5 13.9 90
Sage Creek Basin 7850 11.5 11.9 97 9.8 11.6 84
Sand Lake 10050 22.1 23.4 94 22.3 22.0 101
South Brush Creek 8440 8.8 10.5 84 10.9 12.2 89
Tower 10500 34.9 38.7 90 34.9 36.2 96
Webber Springs 9250 18.8 20.0 94 22.7 22.6 100
Whiskey Park 8950 22.8 24.6 93 25.5 24.8 103
Willow Creek Pass 9540 12.8 11.6 110 13.2 12.1 109
Zirkel 9340 23.0 26.0 88 29.4 27.8 106
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Basin Index (%) 93 98
SWEETWATER
Deer Park 9700 10.4 12.8 81 13.7 16.2 85
Larsen Creek 9000 -M 10.6 * 10.3 11.6 89
South Pass 9040 9.9 13.4 74 12.2 13.7 89
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Basin Index (%) 77 87
LOWER N. PLATTE
Casper Mtn. 7900 9.8 11.7 84 13.9 11.5 121
Laprele Creek 8375 6.6 8.8 75 10.4 10.2 102
Reno Hill 8400 11.1 12.0 92 14.7 12.0 122
Windy Peak 7900 7.1 6.9 103 10.3 8.5 121
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Basin Index (%) 88 117
LARAMIE RIVER
Brooklyn Lake 10240 18.1 18.6 97 20.1 19.0 106
Cinnabar Park 9574 16.8 18.1 93 19.1 21.0 91
Crow Creek 8330 5.2 6.5 80 9.5 9.3 102
Deadman Hill 10220 17.4 14.8 118 15.9 15.6 102
Rawah 9020 9.8 9.9 99 12.5 13.9 90
Roach 9700 14.8 14.2 104 17.8 16.4 109
Windy Peak 7900 7.1 6.9 103 10.3 8.5 121
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Basin Index (%) 100 101
S. PLATTE
Crow Creek 8330 5.2 6.5 80 9.5 9.3 102
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Basin Index (%) 80 102
LITTLE SNAKE RIVER
Battle Mountain 7440 9.2 11.2 82 14.2 13.4 106
Divide Peak 8880 14.1 17.3 82 18.5 19.2 96
Elk River 8700 16.4 16.5 99 19.8 17.0 116
Elkhead Divide 8780 16.6 -M * 20.3 -M *
Little Snake River 8915 20.0 24.4 82 28.3 28.4 100
Old Battle 10000 25.4 26.5 96 27.6 29.9 92
Sage Creek Basin 7850 11.5 11.9 97 9.8 11.6 84
Sandstone RS 8150 11.8 11.7 101 14.4 16.5 87
Whiskey Park 8950 22.8 24.6 93 25.5 24.8 103
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Basin Index (%) 91 98
UPPER GREEN RIVER
Big Sandy Opening 9080 8.5 12.0 71 10.4 11.5 90
Blind Bull Sum 8650 16.9 22.3 76 12.3 16.6 74
East Rim Divide 7930 8.1 10.0 81 9.9 10.3 96
Elkhart Park G.S. 9400 7.3 11.2 65 8.4 11.4 74
Gros Ventre Summit 8750 9.8 11.4 86 9.6 11.1 86
Gunsight Pass 9820 11.6 12.1 96 12.1 12.7 95
Indian Creek 9425 17.4 20.8 84 16.9 17.8 95
Kendall R.S. 7740 8.7 11.3 77 12.1 12.3 98
Larsen Creek 9000 -M 10.6 * 10.3 11.6 89
Loomis Park 8240 10.8 14.2 76 13.5 15.6 87
New Fork Lake 8340 7.4 9.6 77 8.1 9.6 84
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.9 12.1 74 13.7 12.8 107
Spring Creek Divide 9000 17.4 22.6 77 19.6 22.0 89
Triple Peak 8500 17.1 21.8 78 21.4 23.2 92
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Basin Index (%) 78 90
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.3 7.9 105 11.1 10.7 104
Buck Pasture 9632 11.3 -M * 14.0 -M *
EF Blacks Fork GS 9360 7.6 10.6 72 10.6 9.8 108
Hams Fork 7840 8.1 10.4 78 10.4 9.6 108
Henrys Fork 10182 -M -M * 10.1 -M *
Hewinta 9500 8.4 9.3 90 12.9 12.0 108
Hickerson Park 9122 6.8 7.5 91 8.9 8.8 101
Hole-in-Rock 9168 5.8 6.8 85 8.6 8.6 100
Indian Creek 9425 17.4 20.8 84 16.9 17.8 95
Kelley R.S. 8180 9.7 13.2 73 14.7 14.6 101
Spirit Lk 10235 11.9 11.2 106 14.8 14.4 103
Steel Creek Park 10158 12.8 13.2 97 15.2 13.9 109
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Basin Index (%) 87 103
UPPER BEAR RIVER
Bear River RS 8777 8.2 8.4 98 12.0 10.2 118
Bug Lake 7987 13.6 16.9 80 17.2 15.8 109
Burts Miller Ranch 8000 6.9 5.3 130 7.7 6.7 115
Chalk Creek #1 9171 16.8 20.8 81 19.5 20.6 95
Giveout 6930 7.2 7.8 92 11.2 10.6 106
Hayden Fork 9130 12.8 13.2 97 18.7 18.1 103
Kelley R.S. 8180 9.7 13.2 73 14.7 14.6 101
Lily Lake 9133 9.7 11.2 87 14.0 13.7 102
Monte Cristo 8932 20.6 24.2 85 23.1 22.2 104
Salt River Summit 7640 11.0 12.3 89 14.4 13.8 104
Spring Creek Divide 9000 17.4 22.6 77 19.6 22.0 89
Trial Lake 9992 16.2 19.7 82 19.4 19.9 97
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Basin Index (%) 85 102
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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.
