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: APRIL 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 12.8 15.2 84 18.3 21.3 86
Blind Bull Sum 8650 21.9 25.1 87 15.6 18.3 85
Cottonwood Creek 7670 18.4 20.1 92 25.4 26.4 96
East Rim Divide 7930 7.1 9.8 72 11.6 11.6 100
Grand Targhee 9260 32.0 46.8 68 27.5 34.3 80
Granite Creek 6770 12.5 12.6 99 15.2 19.4 78
Grassy Lake 7265 24.2 33.0 73 32.8 37.2 88
Gros Ventre Summit 8750 10.9 13.2 83 11.3 13.2 86
Gunsight Pass 9820 12.7 13.4 95 14.0 14.8 95
Lewis Lake Divide 7850 24.6 33.0 75 32.7 34.8 94
Loomis Park 8240 11.0 13.8 80 16.7 17.2 97
Phillips Bench 8200 21.2 26.6 80 25.1 27.4 92
Salt River Summit 7640 13.3 11.0 121 16.8 16.8 100
Snake River Station 6920 8.8 15.2 58 19.4 23.3 83
Somsen Ranch 6800 11.0 8.0 138 15.2 17.4 87
Spring Creek Divide 9000 22.6 25.3 89 24.5 24.4 100
Thumb Divide 7980 15.0 16.3 92 18.5 19.2 96
Togwotee Pass 9580 20.8 24.8 84 22.1 25.9 85
Triple Peak 8500 21.4 22.0 97 27.0 26.4 102
Two Ocean Plateau 9240 29.0 32.1 90 25.9 28.2 92
Willow Creek 8080 25.6 28.5 90 33.4 34.9 96
Younts Peak 8350 14.4 15.0 96 10.9 16.0 68
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Basin Index (%) 85 90
MADISON HEADWATERS IN WYOMING
Black Bear 8170 -M 39.7 * 31.2 38.6 81
Canyon 7870 9.9 -M * 12.8 -M *
Madison Plateau 7750 17.2 23.4 74 21.4 25.4 84
West Yellowstone 6700 5.7 7.0 81 13.1 14.9 88
Whiskey Creek 6800 11.8 15.8 75 -M 21.0 *
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Basin Index (%) 75 83
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 17.2 23.5 73 16.5 21.8 76
Canyon 7870 9.9 -M * 12.8 -M *
Evening Star 9200 26.0 26.8 97 25.3 30.0 84
Fisher Creek 9100 28.9 35.4 82 30.5 35.2 87
Monument Peak 8850 16.8 22.3 75 20.6 23.4 88
Northeast Entrance 7350 4.7 7.5 63 11.5 13.6 85
Parker Peak 9400 20.3 22.8 89 20.5 21.2 97
Sylvan Lake 8420 15.2 20.9 73 21.9 24.6 89
Thumb Divide 7980 15.0 16.3 92 18.5 19.2 96
Two Ocean Plateau 9240 29.0 32.1 90 25.9 28.2 92
White Mill 8700 20.3 25.6 79 20.2 23.9 85
Wolverine 7650 10.0 8.2 122 12.9 13.0 99
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Basin Index (%) 84 88
WIND RIVER
Burroughs Creek 8750 9.4 -M * 14.0 -M *
Castle Creek 8400 4.6 5.3 87 4.9 9.0 54
Cold Springs 9630 7.7 6.6 117 12.7 9.8 130
Deer Park 9700 14.0 16.0 88 17.5 20.0 88
Hobbs Park 10100 15.1 15.8 96 15.8 14.5 109
Kirwin 9550 13.0 11.9 109 13.8 13.0 106
Little Warm 9370 11.2 10.4 108 14.5 12.5 116
South Pass 9040 12.3 15.6 79 14.7 17.0 86
St. Lawrence Alt 8620 .1 -M * 9.2 -M *
Togwotee Pass 9580 20.8 24.8 84 22.1 25.9 85
Townsend Creek 8700 9.0 9.8 92 12.6 12.8 98
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Basin Index (%) 93 96
BIGHORN BASIN
Bald Mtn. 9380 16.0 20.0 80 14.7 16.9 87
Bear Trap Meadow 8200 6.4 4.0 160 9.9 9.8 101
Bone Springs Div 9350 16.4 17.9 92 13.3 16.8 79
Grave Springs 8550 7.1 8.4 85 8.6 10.7 80
Kirwin 9550 13.0 11.9 109 13.8 13.0 106
Marquette 8760 6.3 7.8 81 9.5 10.6 90
Middle Powder 7760 9.7 11.4 85 10.0 10.5 95
Owl Creek 8975 5.2 4.6 113 8.0 6.8 118
Powder River Pass 9480 9.5 10.2 93 10.2 14.1 72
Shell Creek 9580 14.6 16.4 89 14.4 14.9 97
Timber Creek 7950 4.2 5.2 81 8.6 8.8 98
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Basin Index (%) 92 91
SHOSHONE RIVER
Blackwater 9780 21.6 25.0 86 22.6 23.6 96
Evening Star 9200 26.0 26.8 97 25.3 30.0 84
Marquette 8760 6.3 7.8 81 9.5 10.6 90
Sylvan Lake 8420 15.2 20.9 73 21.9 24.6 89
Sylvan Road 7120 3.5 10.2 34 -M 17.4 *
Younts Peak 8350 14.4 15.0 96 10.9 16.0 68
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Basin Index (%) 82 86
POWDER RIVER
Bear Trap Meadow 8200 6.4 4.0 160 9.9 9.8 101
Cloud Peak Reservoir 9860 14.4 15.1 95 15.7 14.9 105
Grave Springs 8550 7.1 8.4 85 8.6 10.7 80
Hansen Sawmill 8360 7.0 5.7 123 10.9 9.5 115
Middle Powder 7760 9.7 11.4 85 10.0 10.5 95
Powder River Pass 9480 9.5 10.2 93 10.2 14.1 72
Soldier Park 8720 4.8 6.8 71 11.0 10.7 103
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Basin Index (%) 96 95
TONGUE RIVER
Big Goose 7990 8.6 8.8 98 12.5 11.0 114
Bone Springs Div 9350 16.4 17.9 92 13.3 16.8 79
Burgess Junction 7880 11.3 11.8 96 13.1 13.4 98
Dome Lake 8880 13.7 12.1 113 14.8 14.4 103
Little Goose 8870 10.1 10.8 94 14.8 13.8 107
Sucker Creek 8880 12.2 12.9 95 16.7 15.0 111
Tie Creek 6870 3.5 4.3 81 12.4 12.4 100
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Basin Index (%) 96 101
BELLE FOURCHE
Blind Park 6890 .9 4.0 22 10.3 12.0 86
Cole Canyon 5910 4.0 3.0 133 10.4 9.8 106
North Rapid Creek 6130 4.7 4.4 107 6.4 9.6 67
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Basin Index (%) 84 86
CHEYENNE RIVER BASIN
Blind Park 6890 .9 4.0 22 10.3 12.0 86
North Rapid Creek 6130 4.7 4.4 107 6.4 9.6 67
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Basin Index (%) 67 77
UPPER N. PLATTE
Arapaho Ridge 10960 21.4 23.2 92 21.9 23.1 95
Blackhall Mtn 9820 29.3 32.9 89 31.1 31.8 98
Cinnabar Park 9574 18.3 20.4 90 22.0 24.6 89
Columbine 9160 20.5 21.8 94 25.5 26.6 96
Divide Peak 8880 16.3 19.4 84 21.0 23.0 91
Joe Wright 10120 23.2 22.0 105 31.2 27.8 112
Laprele Creek 8375 7.4 8.2 90 12.2 12.8 95
Med Bow 10500 34.2 -M * 31.7 -M *
Never Summer 10280 23.8 21.7 110 18.6 18.4 101
North French Creek 10130 26.0 31.6 82 27.3 28.5 96
Old Battle 10000 30.1 33.4 90 32.3 35.6 91
Rawah 9020 11.9 10.8 110 16.6 17.0 98
Sage Creek Basin 7850 9.5 8.5 112 11.3 13.6 83
Sand Lake 10050 27.7 30.2 92 27.3 26.8 102
South Brush Creek 8440 7.6 9.4 81 12.8 14.4 89
Tower 10500 37.8 45.2 84 41.1 41.6 99
Webber Springs 9250 20.7 22.2 93 26.8 27.4 98
Whiskey Park 8950 26.0 26.3 99 29.2 29.4 99
Willow Creek Pass 9540 15.8 14.4 110 15.9 14.6 109
Zirkel 9340 22.9 25.5 90 33.2 33.1 100
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Basin Index (%) 93 97
SWEETWATER
Deer Park 9700 14.0 16.0 88 17.5 20.0 88
Larsen Creek 9000 -M 8.8 * 12.9 14.4 90
South Pass 9040 12.3 15.6 79 14.7 17.0 86
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Basin Index (%) 83 88
LOWER N. PLATTE
Casper Mtn. 7900 11.7 13.5 87 16.5 15.2 109
Laprele Creek 8375 7.4 8.2 90 12.2 12.8 95
Reno Hill 8400 14.8 13.8 107 18.6 16.6 112
Windy Peak 7900 8.1 6.9 117 11.9 11.2 106
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Basin Index (%) 99 106
LARAMIE RIVER
Brooklyn Lake 10240 21.5 22.0 98 24.7 23.4 106
Cinnabar Park 9574 18.3 20.4 90 22.0 24.6 89
Crow Creek 8330 3.9 4.0 98 10.7 11.8 91
Deadman Hill 10220 20.8 17.5 119 19.8 19.4 102
Rawah 9020 11.9 10.8 110 16.6 17.0 98
Roach 9700 17.2 16.2 106 21.1 20.2 104
Windy Peak 7900 8.1 6.9 117 11.9 11.2 106
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Basin Index (%) 104 99
S. PLATTE
Crow Creek 8330 3.9 4.0 98 10.7 11.8 91
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Basin Index (%) 98 91
LITTLE SNAKE RIVER
Battle Mountain 7440 5.8 6.6 88 16.3 16.2 101
Divide Peak 8880 16.3 19.4 84 21.0 23.0 91
Elk River 8700 16.2 15.6 104 22.5 20.5 110
Elkhead Divide 8780 17.4 -M * 22.3 -M *
Little Snake River 8915 22.2 24.9 89 32.1 34.3 94
Old Battle 10000 30.1 33.4 90 32.3 35.6 91
Sage Creek Basin 7850 9.5 8.5 112 11.3 13.6 83
Sandstone RS 8150 11.0 10.2 108 16.3 18.5 88
Whiskey Park 8950 26.0 26.3 99 29.2 29.4 99
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Basin Index (%) 95 95
UPPER GREEN RIVER
Big Sandy Opening 9080 11.0 13.6 81 13.0 13.8 94
Blind Bull Sum 8650 21.9 25.1 87 15.6 18.3 85
East Rim Divide 7930 7.1 9.8 72 11.6 11.6 100
Elkhart Park G.S. 9400 8.7 12.6 69 10.1 13.0 78
Gros Ventre Summit 8750 10.9 13.2 83 11.3 13.2 86
Gunsight Pass 9820 12.7 13.4 95 14.0 14.8 95
Indian Creek 9425 21.9 24.8 88 20.7 20.2 102
Kendall R.S. 7740 7.8 9.8 80 14.6 13.6 107
Larsen Creek 9000 -M 8.8 * 12.9 14.4 90
Loomis Park 8240 11.0 13.8 80 16.7 17.2 97
New Fork Lake 8340 7.1 9.6 74 10.0 11.0 91
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 9.2 10.9 84 -M 14.2 *
Spring Creek Divide 9000 22.6 25.3 89 24.5 24.4 100
Triple Peak 8500 21.4 22.0 97 27.0 26.4 102
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Basin Index (%) 85 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 7.1 7.6 93 13.1 13.0 101
Buck Pasture 9632 13.4 -M * 17.0 -M *
EF Blacks Fork GS 9360 7.8 11.4 68 12.4 12.1 102
Hams Fork 7840 6.2 7.8 79 11.9 11.4 104
Henrys Fork 10182 -M -M * 11.7 -M *
Hewinta 9500 9.9 9.2 108 15.0 14.4 104
Hickerson Park 9122 5.2 6.0 87 11.0 11.2 98
Hole-in-Rock 9168 4.3 5.7 75 10.1 10.8 94
Indian Creek 9425 21.9 24.8 88 20.7 20.2 102
Kelley R.S. 8180 11.3 14.4 78 17.3 17.0 102
Spirit Lk 10235 12.1 12.8 95 16.6 19.0 87
Steel Creek Park 10158 15.0 15.8 95 17.9 17.2 104
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Basin Index (%) 87 100
UPPER BEAR RIVER
Bear River RS 8777 5.7 4.4 130 14.4 12.8 112
Bug Lake 7987 17.0 18.3 93 19.9 18.8 106
Burts Miller Ranch 8000 2.7 .6 450* 8.5 8.6 99
Chalk Creek #1 9171 20.2 23.5 86 23.8 24.0 99
Giveout 6930 3.5 3.3 106 13.3 13.1 102
Hayden Fork 9130 10.9 13.2 83 22.4 21.8 103
Kelley R.S. 8180 11.3 14.4 78 17.3 17.0 102
Lily Lake 9133 12.0 12.0 100 16.4 16.0 102
Monte Cristo 8932 22.9 27.3 84 26.8 27.0 99
Salt River Summit 7640 13.3 11.0 121 16.8 16.8 100
Spring Creek Divide 9000 22.6 25.3 89 24.5 24.4 100
Trial Lake 9992 21.2 22.2 95 22.7 23.2 98
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Basin Index (%) 93 101
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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.
