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: APRIL 17 , 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 12.7 15.4 82 18.2 21.2 86
Blind Bull Sum 8650 21.8 25.0 87 15.5 18.2 85
Cottonwood Creek 7670 18.3 20.3 90 25.3 26.2 97
East Rim Divide 7930 7.3 9.7 75 11.6 11.6 100
Grand Targhee 9260 32.0 46.8 68 27.5 33.9 81
Granite Creek 6770 12.5 12.8 98 -M 19.4 *
Grassy Lake 7265 24.1 32.6 74 32.7 36.9 89
Gros Ventre Summit 8750 10.7 13.2 81 11.3 13.2 86
Gunsight Pass 9820 12.8 13.4 96 14.0 14.6 96
Lewis Lake Divide 7850 24.4 32.6 75 32.5 34.6 94
Loomis Park 8240 11.0 14.4 76 16.8 17.2 98
Phillips Bench 8200 21.1 26.5 80 25.0 27.4 91
Salt River Summit 7640 13.1 11.3 116 16.9 16.8 101
Snake River Station 6920 8.7 15.2 57 19.3 23.2 83
Somsen Ranch 6800 11.2 8.6 130 15.4 17.4 89
Spring Creek Divide 9000 22.4 25.2 89 24.3 24.4 100
Thumb Divide 7980 14.9 16.2 92 18.5 19.1 97
Togwotee Pass 9580 20.7 24.6 84 22.0 25.6 86
Triple Peak 8500 21.4 22.0 97 27.1 26.0 104
Two Ocean Plateau 9240 28.7 32.0 90 25.7 28.2 91
Willow Creek 8080 25.1 28.3 89 33.4 34.5 97
Younts Peak 8350 14.3 15.0 95 10.8 15.9 68
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Basin Index (%) 84 91
MADISON HEADWATERS IN WYOMING
Black Bear 8170 -M 39.6 * 31.3 38.4 82
Canyon 7870 9.9 -M * 12.7 -M *
Madison Plateau 7750 17.1 23.4 73 21.3 25.4 84
West Yellowstone 6700 5.6 7.2 78 13.1 14.8 89
Whiskey Creek 6800 11.9 15.8 75 -M 20.8 *
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Basin Index (%) 75 84
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 17.1 23.2 74 16.0 21.6 74
Canyon 7870 9.9 -M * 12.7 -M *
Evening Star 9200 25.6 26.4 97 24.9 29.6 84
Fisher Creek 9100 28.8 35.4 81 30.5 35.2 87
Monument Peak 8850 16.8 22.0 76 20.6 23.2 89
Northeast Entrance 7350 4.6 7.6 61 11.5 13.6 85
Parker Peak 9400 20.3 22.8 89 20.4 21.0 97
Sylvan Lake 8420 15.1 20.4 74 21.7 24.5 89
Thumb Divide 7980 14.9 16.2 92 18.5 19.1 97
Two Ocean Plateau 9240 28.7 32.0 90 25.7 28.2 91
White Mill 8700 20.3 25.2 81 20.2 23.5 86
Wolverine 7650 10.1 8.5 119 12.8 12.8 100
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Basin Index (%) 84 88
WIND RIVER
Burroughs Creek 8750 9.4 -M * 14.1 -M *
Castle Creek 8400 4.5 5.6 80 5.5 9.0 61
Cold Springs 9630 7.3 6.8 107 12.7 9.8 130
Deer Park 9700 13.9 16.0 87 17.6 19.9 88
Hobbs Park 10100 15.0 15.6 96 15.8 14.4 110
Kirwin 9550 13.0 11.8 110 13.7 13.0 105
Little Warm 9370 11.1 10.4 107 14.5 12.4 117
South Pass 9040 12.2 15.8 77 14.6 16.8 87
St. Lawrence Alt 8620 .8 -M * 9.3 -M *
Togwotee Pass 9580 20.7 24.6 84 22.0 25.6 86
Townsend Creek 8700 8.8 9.9 89 12.6 12.8 98
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Basin Index (%) 91 96
BIGHORN BASIN
Bald Mtn. 9380 16.1 20.0 80 14.8 16.9 88
Bear Trap Meadow 8200 6.5 4.4 148 10.2 9.6 106
Bone Springs Div 9350 16.5 18.1 91 13.4 16.8 80
Grave Springs 8550 7.5 8.4 89 9.2 10.7 86
Kirwin 9550 13.0 11.8 110 13.7 13.0 105
Marquette 8760 6.4 7.8 82 9.6 10.6 91
Middle Powder 7760 9.6 11.4 84 10.2 10.5 97
Owl Creek 8975 5.2 4.8 108 8.0 6.8 118
Powder River Pass 9480 9.3 10.3 90 10.2 14.0 73
Shell Creek 9580 14.6 16.4 89 14.3 14.6 98
Timber Creek 7950 4.2 5.2 81 8.8 8.8 100
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Basin Index (%) 92 93
SHOSHONE RIVER
Blackwater 9780 21.2 24.8 85 22.3 23.5 95
Evening Star 9200 25.6 26.4 97 24.9 29.6 84
Marquette 8760 6.4 7.8 82 9.6 10.6 91
Sylvan Lake 8420 15.1 20.4 74 21.7 24.5 89
Sylvan Road 7120 3.4 10.2 33 -M 17.2 *
Younts Peak 8350 14.3 15.0 95 10.8 15.9 68
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Basin Index (%) 82 86
POWDER RIVER
Bear Trap Meadow 8200 6.5 4.4 148 10.2 9.6 106
Cloud Peak Reservoir 9860 14.5 15.2 95 15.8 14.8 107
Grave Springs 8550 7.5 8.4 89 9.2 10.7 86
Hansen Sawmill 8360 7.3 6.0 122 11.0 9.4 117
Middle Powder 7760 9.6 11.4 84 10.2 10.5 97
Powder River Pass 9480 9.3 10.3 90 10.2 14.0 73
Soldier Park 8720 5.0 6.8 74 11.1 10.4 107
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Basin Index (%) 96 98
TONGUE RIVER
Big Goose 7990 8.6 8.8 98 12.4 10.8 115
Bone Springs Div 9350 16.5 18.1 91 13.4 16.8 80
Burgess Junction 7880 11.4 11.6 98 13.2 13.2 100
Dome Lake 8880 13.8 12.2 113 14.9 14.0 106
Little Goose 8870 10.0 10.5 95 14.8 13.6 109
Sucker Creek 8880 12.3 12.8 96 16.7 14.9 112
Tie Creek 6870 3.5 4.5 78 12.4 12.0 103
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Basin Index (%) 97 103
BELLE FOURCHE
Blind Park 6890 .9 4.5 20 10.5 11.9 88
Cole Canyon 5910 3.4 3.1 110 10.5 9.6 109
North Rapid Creek 6130 4.8 4.8 100 6.5 9.6 68
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Basin Index (%) 73 88
CHEYENNE RIVER BASIN
Blind Park 6890 .9 4.5 20 10.5 11.9 88
North Rapid Creek 6130 4.8 4.8 100 6.5 9.6 68
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Basin Index (%) 61 79
UPPER N. PLATTE
Arapaho Ridge 10960 21.0 23.2 91 21.6 23.1 94
Blackhall Mtn 9820 28.7 32.3 89 30.6 31.6 97
Cinnabar Park 9574 17.8 20.5 87 21.6 24.5 88
Columbine 9160 19.7 21.6 91 24.8 26.4 94
Divide Peak 8880 16.4 19.3 85 21.1 22.8 93
Joe Wright 10120 21.9 21.9 100 30.0 27.6 109
Laprele Creek 8375 7.2 8.4 86 12.3 12.6 98
Med Bow 10500 33.6 -M * 31.2 -M *
Never Summer 10280 23.2 21.6 107 18.2 18.3 99
North French Creek 10130 25.4 31.6 80 26.9 28.5 94
Old Battle 10000 29.7 33.2 89 31.9 35.6 90
Rawah 9020 11.1 10.4 107 15.9 16.9 94
Sage Creek Basin 7850 9.2 9.6 96 11.3 13.6 83
Sand Lake 10050 27.4 30.2 91 27.0 26.6 102
South Brush Creek 8440 7.3 9.6 76 12.8 14.4 89
Tower 10500 36.1 45.2 80 39.9 41.3 97
Webber Springs 9250 20.4 21.8 94 26.4 27.2 97
Whiskey Park 8950 25.2 26.1 97 28.4 29.0 98
Willow Creek Pass 9540 15.4 14.4 107 15.6 14.6 107
Zirkel 9340 22.0 25.8 85 32.3 32.8 98
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Basin Index (%) 90 96
SWEETWATER
Deer Park 9700 13.9 16.0 87 17.6 19.9 88
Larsen Creek 9000 -M 8.8 * 12.9 14.4 90
South Pass 9040 12.2 15.8 77 14.6 16.8 87
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Basin Index (%) 82 88
LOWER N. PLATTE
Casper Mtn. 7900 11.6 13.5 86 16.5 15.2 109
Laprele Creek 8375 7.2 8.4 86 12.3 12.6 98
Reno Hill 8400 14.8 13.8 107 18.8 16.6 113
Windy Peak 7900 8.2 7.4 111 12.0 11.2 107
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Basin Index (%) 97 107
LARAMIE RIVER
Brooklyn Lake 10240 20.8 21.8 95 24.1 23.4 103
Cinnabar Park 9574 17.8 20.5 87 21.6 24.5 88
Crow Creek 8330 3.9 4.5 87 10.6 11.2 95
Deadman Hill 10220 20.1 16.6 121 19.2 19.2 100
Rawah 9020 11.1 10.4 107 15.9 16.9 94
Roach 9700 16.6 16.0 104 20.7 20.1 103
Windy Peak 7900 8.2 7.4 111 12.0 11.2 107
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Basin Index (%) 101 98
S. PLATTE
Crow Creek 8330 3.9 4.5 87 10.6 11.2 95
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Basin Index (%) 87 95
LITTLE SNAKE RIVER
Battle Mountain 7440 5.7 6.8 84 16.2 16.0 101
Divide Peak 8880 16.4 19.3 85 21.1 22.8 93
Elk River 8700 15.5 16.6 93 22.1 20.4 108
Elkhead Divide 8780 17.0 -M * 22.1 -M *
Little Snake River 8915 21.6 25.1 86 31.5 34.0 93
Old Battle 10000 29.7 33.2 89 31.9 35.6 90
Sage Creek Basin 7850 9.2 9.6 96 11.3 13.6 83
Sandstone RS 8150 10.8 10.8 100 16.1 18.5 87
Whiskey Park 8950 25.2 26.1 97 28.4 29.0 98
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Basin Index (%) 91 94
UPPER GREEN RIVER
Big Sandy Opening 9080 11.0 13.4 82 13.0 13.8 94
Blind Bull Sum 8650 21.8 25.0 87 15.5 18.2 85
East Rim Divide 7930 7.3 9.7 75 11.6 11.6 100
Elkhart Park G.S. 9400 8.8 12.8 69 10.2 13.0 78
Gros Ventre Summit 8750 10.7 13.2 81 11.3 13.2 86
Gunsight Pass 9820 12.8 13.4 96 14.0 14.6 96
Indian Creek 9425 21.6 24.8 87 20.7 20.2 102
Kendall R.S. 7740 7.8 9.8 80 14.6 13.5 108
Larsen Creek 9000 -M 8.8 * 12.9 14.4 90
Loomis Park 8240 11.0 14.4 76 16.8 17.2 98
New Fork Lake 8340 7.0 9.8 71 10.0 10.9 92
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 9.4 11.1 85 -M 14.2 *
Spring Creek Divide 9000 22.4 25.2 89 24.3 24.4 100
Triple Peak 8500 21.4 22.0 97 27.1 26.0 104
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Basin Index (%) 85 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.0 7.8 90 13.1 13.0 101
Buck Pasture 9632 13.3 -M * 16.8 -M *
EF Blacks Fork GS 9360 7.5 11.6 65 12.3 12.0 102
Hams Fork 7840 5.9 8.4 70 11.8 11.3 104
Henrys Fork 10182 -M -M * 11.5 -M *
Hewinta 9500 10.5 9.4 112 14.9 14.3 104
Hickerson Park 9122 5.7 6.4 89 11.0 11.0 100
Hole-in-Rock 9168 4.3 6.3 68 10.2 10.7 95
Indian Creek 9425 21.6 24.8 87 20.7 20.2 102
Kelley R.S. 8180 11.3 14.4 78 17.3 16.9 102
Spirit Lk 10235 12.0 13.2 91 16.6 18.9 88
Steel Creek Park 10158 14.8 15.7 94 17.7 17.2 103
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Basin Index (%) 85 100
UPPER BEAR RIVER
Bear River RS 8777 5.6 5.6 100 14.4 12.7 113
Bug Lake 7987 17.0 18.6 91 19.9 18.8 106
Burts Miller Ranch 8000 2.9 1.7 171 8.5 8.6 99
Chalk Creek #1 9171 20.2 23.6 86 23.8 24.0 99
Giveout 6930 3.7 4.0 92 13.3 13.0 102
Hayden Fork 9130 10.9 13.8 79 22.3 21.8 102
Kelley R.S. 8180 11.3 14.4 78 17.3 16.9 102
Lily Lake 9133 12.0 12.4 97 16.4 16.0 102
Monte Cristo 8932 22.8 27.4 83 26.8 26.8 100
Salt River Summit 7640 13.1 11.3 116 16.9 16.8 101
Spring Creek Divide 9000 22.4 25.2 89 24.3 24.4 100
Trial Lake 9992 21.0 22.1 95 22.6 23.2 97
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Basin Index (%) 90 102
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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.
