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: MARCH 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 12.0 16.0 75 14.8 18.2 81
Blind Bull Sum 8650 16.7 21.8 77 12.2 16.2 75
Cottonwood Creek 7670 15.3 19.8 77 21.1 22.4 94
East Rim Divide 7930 8.1 10.0 81 9.8 10.1 97
Grand Targhee 9260 26.7 36.6 73 24.0 27.0 89
Granite Creek 6770 10.5 15.6 67 -M 16.8 *
Grassy Lake 7265 19.4 29.2 66 27.1 31.8 85
Gros Ventre Summit 8750 9.5 11.3 84 9.4 11.0 85
Gunsight Pass 9820 11.2 11.9 94 11.7 12.4 94
Lewis Lake Divide 7850 21.0 27.9 75 28.2 29.4 96
Loomis Park 8240 10.6 13.8 77 13.4 15.4 87
Phillips Bench 8200 17.0 23.4 73 20.4 24.0 85
Salt River Summit 7640 10.8 12.2 89 14.2 13.7 104
Snake River Station 6920 10.6 16.1 66 16.4 19.6 84
Somsen Ranch 6800 9.8 11.6 84 14.9 14.6 102
Spring Creek Divide 9000 17.3 22.3 78 19.4 21.6 90
Thumb Divide 7980 13.0 14.4 90 15.4 15.4 100
Togwotee Pass 9580 17.6 21.1 83 18.5 22.4 83
Triple Peak 8500 17.0 21.7 78 21.2 23.2 91
Two Ocean Plateau 9240 22.9 26.0 88 20.6 23.4 88
Willow Creek 8080 20.5 26.6 77 26.5 29.1 91
Younts Peak 8350 12.4 13.2 94 9.2 13.0 71
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Basin Index (%) 78 89
MADISON HEADWATERS IN WYOMING
Black Bear 8170 26.8 35.2 76 27.4 33.0 83
Canyon 7870 7.7 -M * 10.6 -M *
Madison Plateau 7750 15.1 20.3 74 18.3 22.0 83
West Yellowstone 6700 7.7 10.2 75 10.9 13.0 84
Whiskey Creek 6800 9.9 14.6 68 13.4 17.6 76
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Basin Index (%) 74 82
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 14.4 19.6 73 13.8 18.2 76
Canyon 7870 7.7 -M * 10.6 -M *
Evening Star 9200 22.2 23.4 95 22.0 25.6 86
Fisher Creek 9100 24.8 28.4 87 26.1 28.7 91
Monument Peak 8850 14.6 18.2 80 17.6 19.0 93
Northeast Entrance 7350 5.6 9.7 58 9.5 11.8 81
Parker Peak 9400 17.0 18.9 90 16.6 18.2 91
Sylvan Lake 8420 13.7 18.1 76 18.3 20.4 90
Thumb Divide 7980 13.0 14.4 90 15.4 15.4 100
Two Ocean Plateau 9240 22.9 26.0 88 20.6 23.4 88
White Mill 8700 16.9 21.6 78 16.6 20.8 80
Wolverine 7650 9.5 10.9 87 10.4 11.0 95
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Basin Index (%) 83 88
WIND RIVER
Burroughs Creek 8750 7.9 -M * 10.6 -M *
Castle Creek 8400 5.1 6.9 74 6.2 7.8 79
Cold Springs 9630 8.6 6.5 132 11.0 7.6 145
Deer Park 9700 10.2 12.0 85 13.4 15.0 89
Hobbs Park 10100 12.6 11.8 107 13.2 10.6 125
Kirwin 9550 9.6 9.4 102 10.9 10.1 108
Little Warm 9370 9.7 8.9 109 12.1 10.8 112
South Pass 9040 9.8 12.8 77 11.9 12.8 93
St. Lawrence Alt 8620 1.9 -M * 7.7 -M *
Togwotee Pass 9580 17.6 21.1 83 18.5 22.4 83
Townsend Creek 8700 7.8 8.0 98 10.6 8.9 119
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Basin Index (%) 93 102
BIGHORN BASIN
Bald Mtn. 9380 13.0 16.5 79 12.1 14.0 86
Bear Trap Meadow 8200 5.7 5.6 102 7.9 7.0 113
Bone Springs Div 9350 12.6 14.2 89 11.0 13.1 84
Grave Springs 8550 5.6 7.6 74 7.5 8.2 91
Kirwin 9550 9.6 9.4 102 10.9 10.1 108
Marquette 8760 3.5 6.1 57 6.9 7.6 91
Middle Powder 7760 7.0 9.0 78 7.9 8.7 91
Owl Creek 8975 5.7 4.8 119 6.5 5.1 127
Powder River Pass 9480 8.9 9.7 92 7.8 10.8 72
Shell Creek 9580 11.3 13.0 87 11.4 11.8 97
Timber Creek 7950 3.9 4.1 95 6.0 6.4 94
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Basin Index (%) 87 93
SHOSHONE RIVER
Blackwater 9780 16.8 20.3 83 18.5 19.3 96
Evening Star 9200 22.2 23.4 95 22.0 25.6 86
Marquette 8760 3.5 6.1 57 6.9 7.6 91
Sylvan Lake 8420 13.7 18.1 76 18.3 20.4 90
Sylvan Road 7120 7.3 10.8 68 12.4 14.9 83
Younts Peak 8350 12.4 13.2 94 9.2 13.0 71
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Basin Index (%) 83 87
POWDER RIVER
Bear Trap Meadow 8200 5.7 5.6 102 7.9 7.0 113
Cloud Peak Reservoir 9860 11.6 12.9 90 11.8 11.0 107
Grave Springs 8550 5.6 7.6 74 7.5 8.2 91
Hansen Sawmill 8360 5.9 5.8 102 8.5 7.4 115
Middle Powder 7760 7.0 9.0 78 7.9 8.7 91
Powder River Pass 9480 8.9 9.7 92 7.8 10.8 72
Soldier Park 8720 2.9 5.9 49 8.3 8.0 104
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Basin Index (%) 84 98
TONGUE RIVER
Big Goose 7990 5.6 7.2 78 9.4 8.6 109
Bone Springs Div 9350 12.6 14.2 89 11.0 13.1 84
Burgess Junction 7880 8.6 9.4 91 10.8 10.2 106
Dome Lake 8880 9.9 10.0 99 11.0 10.6 104
Little Goose 8870 7.3 8.3 88 11.1 9.9 112
Sucker Creek 8880 9.8 10.6 92 12.9 11.9 108
Tie Creek 6870 3.6 4.6 78 9.8 9.1 108
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Basin Index (%) 89 104
BELLE FOURCHE
Blind Park 6890 3.8 7.0 54 7.3 9.6 76
Cole Canyon 5910 3.8 5.0 76 7.7 7.6 101
North Rapid Creek 6130 5.2 6.2 84 5.2 7.8 67
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Basin Index (%) 70 81
CHEYENNE RIVER BASIN
Blind Park 6890 3.8 7.0 54 7.3 9.6 76
North Rapid Creek 6130 5.2 6.2 84 5.2 7.8 67
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Basin Index (%) 68 72
UPPER N. PLATTE
Arapaho Ridge 10960 18.4 19.2 96 17.6 19.1 92
Blackhall Mtn 9820 26.2 26.4 99 27.1 25.8 105
Cinnabar Park 9574 16.7 18.1 92 19.0 21.0 90
Columbine 9160 18.8 20.8 90 20.8 21.2 98
Divide Peak 8880 14.0 17.0 82 18.4 18.4 100
Joe Wright 10120 19.1 18.2 105 25.2 22.8 111
Laprele Creek 8375 6.3 8.4 75 10.2 9.9 103
Med Bow 10500 27.7 -M * 25.8 -M *
Never Summer 10280 19.0 17.6 108 14.4 14.5 99
North French Creek 10130 21.2 24.0 88 22.5 22.8 99
Old Battle 10000 25.2 26.0 97 27.3 29.1 94
Rawah 9020 9.9 9.6 103 12.5 13.2 95
Sage Creek Basin 7850 11.7 12.0 98 9.7 11.4 85
Sand Lake 10050 21.7 22.6 96 21.9 21.0 104
South Brush Creek 8440 8.8 10.8 81 10.8 11.7 92
Tower 10500 34.8 38.4 91 34.6 35.5 97
Webber Springs 9250 18.9 19.4 97 22.4 21.8 103
Whiskey Park 8950 22.6 24.3 93 25.2 24.3 104
Willow Creek Pass 9540 12.9 11.2 115 13.2 11.9 111
Zirkel 9340 22.7 26.0 87 29.3 27.6 106
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Basin Index (%) 94 100
SWEETWATER
Deer Park 9700 10.2 12.0 85 13.4 15.0 89
Larsen Creek 9000 -M 10.5 * 10.0 11.4 88
South Pass 9040 9.8 12.8 77 11.9 12.8 93
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Basin Index (%) 81 90
LOWER N. PLATTE
Casper Mtn. 7900 9.7 11.5 84 13.7 11.2 122
Laprele Creek 8375 6.3 8.4 75 10.2 9.9 103
Reno Hill 8400 10.9 11.6 94 14.5 12.0 121
Windy Peak 7900 6.9 6.8 101 10.0 8.3 120
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Basin Index (%) 88 117
LARAMIE RIVER
Brooklyn Lake 10240 18.0 17.8 101 20.0 18.4 109
Cinnabar Park 9574 16.7 18.1 92 19.0 21.0 90
Crow Creek 8330 5.3 6.6 80 9.3 9.3 100
Deadman Hill 10220 17.3 14.6 118 15.7 15.2 103
Rawah 9020 9.9 9.6 103 12.5 13.2 95
Roach 9700 14.8 13.6 109 17.7 15.8 112
Windy Peak 7900 6.9 6.8 101 10.0 8.3 120
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Basin Index (%) 102 103
S. PLATTE
Crow Creek 8330 5.3 6.6 80 9.3 9.3 100
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Basin Index (%) 80 100
LITTLE SNAKE RIVER
Battle Mountain 7440 8.9 11.1 80 13.8 13.1 105
Divide Peak 8880 14.0 17.0 82 18.4 18.4 100
Elk River 8700 17.0 16.6 102 19.7 16.8 117
Elkhead Divide 8780 16.6 -M * 20.2 -M *
Little Snake River 8915 19.7 23.9 82 28.0 28.2 99
Old Battle 10000 25.2 26.0 97 27.3 29.1 94
Sage Creek Basin 7850 11.7 12.0 98 9.7 11.4 85
Sandstone RS 8150 11.7 11.4 103 14.1 15.9 89
Whiskey Park 8950 22.6 24.3 93 25.2 24.3 104
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Basin Index (%) 92 99
UPPER GREEN RIVER
Big Sandy Opening 9080 8.1 11.7 69 10.0 11.2 89
Blind Bull Sum 8650 16.7 21.8 77 12.2 16.2 75
East Rim Divide 7930 8.1 10.0 81 9.8 10.1 97
Elkhart Park G.S. 9400 7.2 11.1 65 8.1 11.2 72
Gros Ventre Summit 8750 9.5 11.3 84 9.4 11.0 85
Gunsight Pass 9820 11.2 11.9 94 11.7 12.4 94
Indian Creek 9425 17.3 20.6 84 16.9 17.4 97
Kendall R.S. 7740 8.6 11.0 78 11.9 12.1 98
Larsen Creek 9000 -M 10.5 * 10.0 11.4 88
Loomis Park 8240 10.6 13.8 77 13.4 15.4 87
New Fork Lake 8340 7.2 9.6 75 -M 9.5 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.8 12.0 73 13.7 12.6 109
Spring Creek Divide 9000 17.3 22.3 78 19.4 21.6 90
Triple Peak 8500 17.0 21.7 78 21.2 23.2 91
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Basin Index (%) 78 90
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.2 7.8 105 11.1 10.5 106
Buck Pasture 9632 11.1 -M * 13.4 -M *
EF Blacks Fork GS 9360 6.9 10.4 66 10.4 9.8 106
Hams Fork 7840 8.1 10.2 79 10.4 9.4 111
Henrys Fork 10182 -M -M * 10.2 -M *
Hewinta 9500 9.3 8.6 108 12.6 11.4 111
Hickerson Park 9122 6.5 6.8 96 8.5 8.8 97
Hole-in-Rock 9168 5.7 6.4 89 8.4 8.5 99
Indian Creek 9425 17.3 20.6 84 16.9 17.4 97
Kelley R.S. 8180 9.4 13.1 72 14.5 14.4 101
Spirit Lk 10235 11.6 10.4 112 14.5 14.4 101
Steel Creek Park 10158 12.6 12.8 98 15.0 13.2 114
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Basin Index (%) 89 104
UPPER BEAR RIVER
Bear River RS 8777 8.6 8.4 102 12.0 10.1 119
Bug Lake 7987 13.5 16.5 82 17.1 15.5 110
Burts Miller Ranch 8000 7.0 4.9 143 7.4 6.6 112
Chalk Creek #1 9171 16.5 20.0 82 19.3 20.5 94
Giveout 6930 7.1 8.0 89 11.1 10.4 107
Hayden Fork 9130 13.2 13.6 97 18.5 17.5 106
Kelley R.S. 8180 9.4 13.1 72 14.5 14.4 101
Lily Lake 9133 9.6 11.2 86 13.8 13.6 101
Monte Cristo 8932 20.5 23.8 86 23.1 21.9 105
Salt River Summit 7640 10.8 12.2 89 14.2 13.7 104
Spring Creek Divide 9000 17.3 22.3 78 19.4 21.6 90
Trial Lake 9992 16.7 19.6 85 19.0 19.6 97
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Basin Index (%) 87 102
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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.
