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 THURSDAY: APRIL 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 12.6 14.2 89 18.4 21.4 86
Blind Bull Sum 8650 22.2 25.4 87 15.7 18.8 84
Cottonwood Creek 7670 17.9 20.6 87 25.5 26.7 96
East Rim Divide 7930 6.4 9.4 68 11.6 11.8 98
Grand Targhee 9260 32.0 46.5 69 27.7 34.6 80
Granite Creek 6770 12.0 12.3 98 15.2 19.6 78
Grassy Lake 7265 24.3 32.5 75 33.3 37.3 89
Gros Ventre Summit 8750 11.4 13.3 86 11.4 13.6 84
Gunsight Pass 9820 12.7 13.5 94 14.1 14.9 95
Lewis Lake Divide 7850 25.1 33.2 76 33.3 35.1 95
Loomis Park 8240 10.6 13.2 80 16.7 17.4 96
Phillips Bench 8200 21.3 26.7 80 25.4 27.6 92
Salt River Summit 7640 12.9 11.0 117 17.0 17.1 99
Snake River Station 6920 8.8 15.0 59 19.6 23.3 84
Somsen Ranch 6800 10.3 7.0 147 -M 17.4 *
Spring Creek Divide 9000 22.7 25.5 89 24.6 24.6 100
Thumb Divide 7980 15.7 16.8 93 19.1 19.6 97
Togwotee Pass 9580 20.9 24.9 84 22.3 26.1 85
Triple Peak 8500 21.6 21.4 101 27.1 26.9 101
Two Ocean Plateau 9240 29.4 32.3 91 26.4 28.5 93
Willow Creek 8080 26.0 28.6 91 33.8 35.2 96
Younts Peak 8350 14.6 15.2 96 10.8 16.3 66
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Basin Index (%) 85 90
MADISON HEADWATERS IN WYOMING
Black Bear 8170 29.6 39.6 75 32.0 39.2 82
Canyon 7870 10.4 -M * 13.3 -M *
Madison Plateau 7750 18.5 23.5 79 22.4 25.8 87
West Yellowstone 6700 5.6 6.7 84 13.6 15.4 88
Whiskey Creek 6800 12.4 15.8 78 -M 21.8 *
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Basin Index (%) 77 85
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.1 23.8 76 17.4 21.9 79
Canyon 7870 10.4 -M * 13.3 -M *
Evening Star 9200 26.8 27.1 99 25.8 30.4 85
Fisher Creek 9100 30.0 35.4 85 31.5 35.4 89
Monument Peak 8850 17.5 22.2 79 21.1 23.8 89
Northeast Entrance 7350 5.1 6.6 77 11.9 14.0 85
Parker Peak 9400 20.7 23.6 88 20.8 21.2 98
Sylvan Lake 8420 15.6 20.9 75 22.4 24.9 90
Thumb Divide 7980 15.7 16.8 93 19.1 19.6 97
Two Ocean Plateau 9240 29.4 32.3 91 26.4 28.5 93
White Mill 8700 21.1 26.0 81 20.8 24.2 86
Wolverine 7650 10.3 7.4 139 13.0 13.2 98
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Basin Index (%) 87 90
WIND RIVER
Burroughs Creek 8750 8.4 -M * 14.0 -M *
Castle Creek 8400 4.3 4.2 102 -M 9.0 *
Cold Springs 9630 7.7 6.0 128 12.8 9.8 131
Deer Park 9700 13.8 16.0 86 17.6 20.3 87
Hobbs Park 10100 15.3 15.8 97 16.0 14.6 110
Kirwin 9550 12.8 11.9 108 13.9 13.6 102
Little Warm 9370 11.2 10.3 109 14.6 12.8 114
South Pass 9040 12.0 15.4 78 14.8 17.4 85
St. Lawrence Alt 8620 .1 -M * 9.3 -M *
Togwotee Pass 9580 20.9 24.9 84 22.3 26.1 85
Townsend Creek 8700 9.0 9.6 94 12.6 13.0 97
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Basin Index (%) 94 98
BIGHORN BASIN
Bald Mtn. 9380 16.2 19.8 82 14.9 17.2 87
Bear Trap Meadow 8200 5.6 3.9 144 10.1 10.2 99
Bone Springs Div 9350 16.6 17.7 94 13.6 17.2 79
Grave Springs 8550 7.0 8.2 85 9.2 11.0 84
Kirwin 9550 12.8 11.9 108 13.9 13.6 102
Marquette 8760 6.0 8.0 75 9.6 10.7 90
Middle Powder 7760 9.5 12.0 79 10.0 11.1 90
Owl Creek 8975 4.7 3.8 124 8.0 7.2 111
Powder River Pass 9480 9.8 11.0 89 10.4 14.5 72
Shell Creek 9580 14.6 16.8 87 14.4 15.2 95
Timber Creek 7950 3.6 5.2 69 8.6 9.1 95
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Basin Index (%) 90 90
SHOSHONE RIVER
Blackwater 9780 21.9 25.2 87 23.1 24.0 96
Evening Star 9200 26.8 27.1 99 25.8 30.4 85
Marquette 8760 6.0 8.0 75 9.6 10.7 90
Sylvan Lake 8420 15.6 20.9 75 22.4 24.9 90
Sylvan Road 7120 3.3 9.6 34 -M 17.6 *
Younts Peak 8350 14.6 15.2 96 10.8 16.3 66
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Basin Index (%) 83 86
POWDER RIVER
Bear Trap Meadow 8200 5.6 3.9 144 10.1 10.2 99
Cloud Peak Reservoir 9860 14.6 15.8 92 15.8 15.1 105
Grave Springs 8550 7.0 8.2 85 9.2 11.0 84
Hansen Sawmill 8360 7.1 5.2 137 10.9 9.8 111
Middle Powder 7760 9.5 12.0 79 10.0 11.1 90
Powder River Pass 9480 9.8 11.0 89 10.4 14.5 72
Soldier Park 8720 4.7 6.5 72 11.1 10.8 103
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Basin Index (%) 93 94
TONGUE RIVER
Big Goose 7990 8.4 8.7 97 12.6 11.1 114
Bone Springs Div 9350 16.6 17.7 94 13.6 17.2 79
Burgess Junction 7880 11.2 11.8 95 13.2 13.8 96
Dome Lake 8880 13.7 11.6 118 15.0 14.8 101
Little Goose 8870 9.9 10.7 93 14.9 13.9 107
Sucker Creek 8880 12.3 13.0 95 16.8 15.6 108
Tie Creek 6870 3.5 4.4 80 12.4 12.6 98
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Basin Index (%) 97 99
BELLE FOURCHE
Blind Park 6890 .7 4.2 17 10.3 12.5 82
Cole Canyon 5910 3.4 2.2 155 10.3 10.2 101
North Rapid Creek 6130 3.4 3.9 87 6.4 10.2 63
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Basin Index (%) 73 82
CHEYENNE RIVER BASIN
Blind Park 6890 .7 4.2 17 10.3 12.5 82
North Rapid Creek 6130 3.4 3.9 87 6.4 10.2 63
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Basin Index (%) 51 74
UPPER N. PLATTE
Arapaho Ridge 10960 19.9 23.9 83 21.8 24.0 91
Blackhall Mtn 9820 29.0 32.9 88 31.2 31.8 98
Cinnabar Park 9574 17.8 19.7 90 22.1 24.6 90
Columbine 9160 19.1 21.3 90 25.5 27.0 94
Divide Peak 8880 14.8 19.3 77 21.1 23.3 91
Joe Wright 10120 23.0 22.0 105 31.2 28.5 109
Laprele Creek 8375 7.3 7.6 96 12.4 13.1 95
Med Bow 10500 34.4 -M * 31.9 -M *
Never Summer 10280 23.7 22.0 108 18.7 18.7 100
North French Creek 10130 26.1 31.5 83 27.5 29.6 93
Old Battle 10000 30.2 33.5 90 32.5 35.9 91
Rawah 9020 11.1 10.2 109 16.7 17.4 96
Sage Creek Basin 7850 7.9 6.2 127 11.2 13.8 81
Sand Lake 10050 27.8 30.4 91 27.5 27.0 102
South Brush Creek 8440 7.0 9.0 78 13.0 14.8 88
Tower 10500 38.5 46.2 83 41.4 42.2 98
Webber Springs 9250 20.1 22.0 91 26.9 27.4 98
Whiskey Park 8950 25.6 26.6 96 29.3 30.0 98
Willow Creek Pass 9540 15.5 14.7 105 15.9 14.8 107
Zirkel 9340 22.5 25.6 88 33.3 33.2 100
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Basin Index (%) 91 96
SWEETWATER
Deer Park 9700 13.8 16.0 86 17.6 20.3 87
Larsen Creek 9000 -M 8.0 * 12.9 15.1 85
South Pass 9040 12.0 15.4 78 14.8 17.4 85
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Basin Index (%) 82 86
LOWER N. PLATTE
Casper Mtn. 7900 11.6 13.9 83 16.7 15.6 107
Laprele Creek 8375 7.3 7.6 96 12.4 13.1 95
Reno Hill 8400 14.4 14.2 101 18.9 17.2 110
Windy Peak 7900 7.7 6.6 117 11.9 11.4 104
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Basin Index (%) 97 105
LARAMIE RIVER
Brooklyn Lake 10240 21.1 22.0 96 24.8 23.7 105
Cinnabar Park 9574 17.8 19.7 90 22.1 24.6 90
Crow Creek 8330 2.3 2.9 79 10.7 11.8 91
Deadman Hill 10220 20.7 17.7 117 20.0 19.6 102
Rawah 9020 11.1 10.2 109 16.7 17.4 96
Roach 9700 16.6 16.4 101 21.3 20.4 104
Windy Peak 7900 7.7 6.6 117 11.9 11.4 104
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Basin Index (%) 102 99
S. PLATTE
Crow Creek 8330 2.3 2.9 79 10.7 11.8 91
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Basin Index (%) 79 91
LITTLE SNAKE RIVER
Battle Mountain 7440 3.2 5.5 58 16.3 16.2 101
Divide Peak 8880 14.8 19.3 77 21.1 23.3 91
Elk River 8700 15.4 15.0 103 22.7 20.8 109
Elkhead Divide 8780 16.2 -M * 22.4 -M *
Little Snake River 8915 21.7 24.0 90 32.1 34.4 93
Old Battle 10000 30.2 33.5 90 32.5 35.9 91
Sage Creek Basin 7850 7.9 6.2 127 11.2 13.8 81
Sandstone RS 8150 9.1 10.0 91 16.2 18.8 86
Whiskey Park 8950 25.6 26.6 96 29.3 30.0 98
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Basin Index (%) 91 94
UPPER GREEN RIVER
Big Sandy Opening 9080 10.7 13.4 80 13.0 13.9 94
Blind Bull Sum 8650 22.2 25.4 87 15.7 18.8 84
East Rim Divide 7930 6.4 9.4 68 11.6 11.8 98
Elkhart Park G.S. 9400 8.8 13.0 68 10.3 13.2 78
Gros Ventre Summit 8750 11.4 13.3 86 11.4 13.6 84
Gunsight Pass 9820 12.7 13.5 94 14.1 14.9 95
Indian Creek 9425 22.1 24.5 90 20.8 20.4 102
Kendall R.S. 7740 7.4 8.7 85 14.6 13.8 106
Larsen Creek 9000 -M 8.0 * 12.9 15.1 85
Loomis Park 8240 10.6 13.2 80 16.7 17.4 96
New Fork Lake 8340 6.5 9.2 71 10.1 11.2 90
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.6 10.5 82 16.7 14.4 116
Spring Creek Divide 9000 22.7 25.5 89 24.6 24.6 100
Triple Peak 8500 21.6 21.4 101 27.1 26.9 101
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Basin Index (%) 85 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.9 7.0 84 13.4 13.4 100
Buck Pasture 9632 12.8 -M * 17.1 -M *
EF Blacks Fork GS 9360 6.5 11.0 59 12.5 12.6 99
Hams Fork 7840 5.6 7.1 79 11.9 11.5 103
Henrys Fork 10182 -M -M * 11.7 -M *
Hewinta 9500 7.1 7.8 91 15.2 15.0 101
Hickerson Park 9122 3.5 5.4 65 11.0 11.3 97
Hole-in-Rock 9168 1.6 6.0 27 10.1 10.9 93
Indian Creek 9425 22.1 24.5 90 20.8 20.4 102
Kelley R.S. 8180 11.2 14.0 80 17.3 17.2 101
Spirit Lk 10235 9.7 12.9 75 16.7 19.1 87
Steel Creek Park 10158 14.9 16.0 93 18.0 17.4 103
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Basin Index (%) 79 99
UPPER BEAR RIVER
Bear River RS 8777 3.3 3.0 110 14.5 13.0 112
Bug Lake 7987 16.1 17.2 94 20.0 18.8 106
Burts Miller Ranch 8000 .0 .0 * 8.6 8.7 99
Chalk Creek #1 9171 19.4 22.6 86 24.1 24.2 100
Giveout 6930 2.0 2.7 74 13.3 13.2 101
Hayden Fork 9130 8.0 11.4 70 22.6 21.9 103
Kelley R.S. 8180 11.2 14.0 80 17.3 17.2 101
Lily Lake 9133 10.4 11.2 93 16.6 16.0 104
Monte Cristo 8932 22.3 26.1 85 27.0 27.0 100
Salt River Summit 7640 12.9 11.0 117 17.0 17.1 99
Spring Creek Divide 9000 22.7 25.5 89 24.6 24.6 100
Trial Lake 9992 21.4 22.8 94 22.8 23.4 97
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Basin Index (%) 89 101
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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.
