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 SATURDAY: APRIL 23 , 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 13.2 91 18.6 22.0 85
Blind Bull Sum 8650 22.8 25.0 91 15.9 19.1 83
Cottonwood Creek 7670 18.2 19.9 91 26.2 26.8 98
East Rim Divide 7930 6.1 9.3 66 11.8 11.8 100
Grand Targhee 9260 32.4 46.7 69 28.1 35.0 80
Granite Creek 6770 11.6 11.9 97 15.5 19.6 79
Grassy Lake 7265 24.3 31.2 78 33.3 37.4 89
Gros Ventre Summit 8750 11.7 13.1 89 11.8 13.6 87
Gunsight Pass 9820 13.1 13.2 99 14.7 15.0 98
Lewis Lake Divide 7850 25.0 32.4 77 33.5 35.4 95
Loomis Park 8240 10.6 13.0 82 17.1 17.4 98
Phillips Bench 8200 21.5 26.6 81 25.5 27.6 92
Salt River Summit 7640 12.7 11.0 115 17.4 17.2 101
Snake River Station 6920 8.6 14.1 61 19.8 23.5 84
Somsen Ranch 6800 9.9 6.0 165 -M 17.4 *
Spring Creek Divide 9000 23.5 25.6 92 25.0 24.8 101
Thumb Divide 7980 15.5 16.7 93 19.2 19.8 97
Togwotee Pass 9580 21.6 24.9 87 22.8 26.1 87
Triple Peak 8500 21.6 20.6 105 27.6 27.1 102
Two Ocean Plateau 9240 30.1 32.7 92 26.8 28.6 94
Willow Creek 8080 26.4 28.2 94 34.6 35.4 98
Younts Peak 8350 14.9 15.2 98 11.3 16.4 69
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Basin Index (%) 87 91
MADISON HEADWATERS IN WYOMING
Black Bear 8170 30.1 39.4 76 32.5 39.2 83
Canyon 7870 10.4 -M * 13.4 -M *
Madison Plateau 7750 18.8 23.4 80 22.8 26.2 87
West Yellowstone 6700 5.6 5.3 106 13.9 15.5 90
Whiskey Creek 6800 12.7 15.4 82 -M 21.8 *
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Basin Index (%) 80 86
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 18.8 23.8 79 17.7 22.2 80
Canyon 7870 10.4 -M * 13.4 -M *
Evening Star 9200 27.3 26.8 102 26.0 30.5 85
Fisher Creek 9100 30.7 35.6 86 32.1 35.6 90
Monument Peak 8850 18.1 22.4 81 21.8 24.0 91
Northeast Entrance 7350 5.1 6.0 85 12.1 14.0 86
Parker Peak 9400 21.3 24.2 88 21.5 21.3 101
Sylvan Lake 8420 15.8 20.2 78 22.8 25.0 91
Thumb Divide 7980 15.5 16.7 93 19.2 19.8 97
Two Ocean Plateau 9240 30.1 32.7 92 26.8 28.6 94
White Mill 8700 21.4 25.6 84 21.2 24.5 87
Wolverine 7650 10.2 7.0 146 13.7 13.3 103
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Basin Index (%) 89 91
WIND RIVER
Burroughs Creek 8750 8.8 -M * 14.8 -M *
Castle Creek 8400 3.8 3.4 112 -M 9.1 *
Cold Springs 9630 7.5 6.4 117 13.6 10.4 131
Deer Park 9700 13.7 15.8 87 18.1 20.4 89
Hobbs Park 10100 15.9 15.8 101 16.9 15.0 113
Kirwin 9550 13.6 11.6 117 14.2 13.8 103
Little Warm 9370 11.6 10.2 114 15.3 12.8 120
South Pass 9040 11.7 15.1 77 14.9 17.4 86
St. Lawrence Alt 8620 .6 -M * 10.0 -M *
Togwotee Pass 9580 21.6 24.9 87 22.8 26.1 87
Townsend Creek 8700 8.9 9.8 91 13.3 13.2 101
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Basin Index (%) 96 100
BIGHORN BASIN
Bald Mtn. 9380 16.6 20.2 82 15.1 17.4 87
Bear Trap Meadow 8200 5.0 3.4 147 10.3 10.2 101
Bone Springs Div 9350 16.7 17.8 94 13.7 17.4 79
Grave Springs 8550 6.9 8.2 84 8.9 11.1 80
Kirwin 9550 13.6 11.6 117 14.2 13.8 103
Marquette 8760 7.2 8.0 90 10.9 10.9 100
Middle Powder 7760 9.4 11.4 82 10.4 11.2 93
Owl Creek 8975 4.3 3.4 126 8.6 7.3 118
Powder River Pass 9480 8.8 10.5 84 10.5 14.6 72
Shell Creek 9580 -M 16.6 * -M 15.2 *
Timber Creek 7950 4.4 4.8 92 9.3 9.2 101
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Basin Index (%) 94 91
SHOSHONE RIVER
Blackwater 9780 23.0 25.5 90 23.7 24.4 97
Evening Star 9200 27.3 26.8 102 26.0 30.5 85
Marquette 8760 7.2 8.0 90 10.9 10.9 100
Sylvan Lake 8420 15.8 20.2 78 22.8 25.0 91
Sylvan Road 7120 3.1 8.4 37 -M 17.7 *
Younts Peak 8350 14.9 15.2 98 11.3 16.4 69
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Basin Index (%) 88 88
POWDER RIVER
Bear Trap Meadow 8200 5.0 3.4 147 10.3 10.2 101
Cloud Peak Reservoir 9860 14.4 15.8 91 16.0 15.2 105
Grave Springs 8550 6.9 8.2 84 8.9 11.1 80
Hansen Sawmill 8360 6.6 5.0 132 11.1 9.9 112
Middle Powder 7760 9.4 11.4 82 10.4 11.2 93
Powder River Pass 9480 8.8 10.5 84 10.5 14.6 72
Soldier Park 8720 4.4 6.2 71 11.2 10.8 104
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Basin Index (%) 92 94
TONGUE RIVER
Big Goose 7990 8.5 8.4 101 12.7 11.4 111
Bone Springs Div 9350 16.7 17.8 94 13.7 17.4 79
Burgess Junction 7880 11.1 11.8 94 13.6 13.9 98
Dome Lake 8880 13.7 12.1 113 15.1 14.8 102
Little Goose 8870 9.8 10.4 94 15.2 14.0 109
Sucker Creek 8880 12.3 12.6 98 17.1 15.8 108
Tie Creek 6870 3.2 4.0 80 12.6 13.2 95
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Basin Index (%) 98 100
BELLE FOURCHE
Blind Park 6890 .5 3.6 14 10.7 12.7 84
Cole Canyon 5910 1.7 2.0 85 10.7 10.2 105
North Rapid Creek 6130 2.0 3.8 53 6.8 10.5 65
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Basin Index (%) 45 84
CHEYENNE RIVER BASIN
Blind Park 6890 .5 3.6 14 10.7 12.7 84
North Rapid Creek 6130 2.0 3.8 53 6.8 10.5 65
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Basin Index (%) 34 75
UPPER N. PLATTE
Arapaho Ridge 10976 20.6 23.9 86 22.1 24.0 92
Blackhall Mtn 9820 28.8 32.9 88 31.4 32.0 98
Cinnabar Park 9574 16.8 19.4 87 22.2 24.7 90
Columbine 9167 17.9 20.8 86 25.7 27.2 94
Divide Peak 8880 13.2 18.0 73 21.3 23.3 91
Joe Wright 10158 22.8 22.4 102 31.4 28.8 109
Laprele Creek 8375 6.4 6.8 94 12.6 13.2 95
Med Bow 10500 34.4 -M * 32.1 -M *
Never Summer 10323 23.7 21.9 108 18.8 18.8 100
North French Creek 10130 25.8 31.6 82 27.7 30.2 92
Old Battle 10000 30.3 34.2 89 32.8 36.0 91
Rawah 9069 10.1 9.4 107 16.8 17.6 95
Sage Creek Basin 7850 5.6 5.4 104 11.4 13.8 83
Sand Lake 10050 27.4 30.6 90 27.5 27.1 101
South Brush Creek 8440 5.4 8.4 64 13.1 15.1 87
Tower 10620 38.8 45.3 86 42.0 43.2 97
Webber Springs 9250 19.3 21.6 89 27.2 27.6 99
Whiskey Park 8950 25.1 26.6 94 29.8 30.1 99
Willow Creek Pass 9523 15.2 14.9 102 15.9 15.2 105
Zirkel 9338 20.5 24.7 83 33.4 33.2 101
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Basin Index (%) 89 96
SWEETWATER
Deer Park 9700 13.7 15.8 87 18.1 20.4 89
Larsen Creek 9000 -M 7.2 * 13.3 15.1 88
South Pass 9040 11.7 15.1 77 14.9 17.4 86
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Basin Index (%) 82 88
LOWER N. PLATTE
Casper Mtn. 7900 11.0 13.7 80 17.0 15.8 108
Laprele Creek 8375 6.4 6.8 94 12.6 13.2 95
Reno Hill 8400 13.7 13.6 101 19.3 17.2 112
Windy Peak 7900 7.1 7.3 97 12.1 11.8 103
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Basin Index (%) 92 105
LARAMIE RIVER
Brooklyn Lake 10240 20.2 23.2 87 24.8 24.0 103
Cinnabar Park 9574 16.8 19.4 87 22.2 24.7 90
Crow Creek 8330 .1 2.2 5 10.6 11.9 89
Deadman Hill 10239 19.9 18.6 107 20.0 20.0 100
Rawah 9069 10.1 9.4 107 16.8 17.6 95
Roach 9740 16.0 16.8 95 21.5 20.8 103
Windy Peak 7900 7.1 7.3 97 12.1 11.8 103
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Basin Index (%) 93 98
S. PLATTE
Crow Creek 8330 .1 2.2 5 10.6 11.9 89
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Basin Index (%) 5 89
LITTLE SNAKE RIVER
Battle Mountain 7440 1.4 4.2 33 16.6 16.4 101
Divide Peak 8880 13.2 18.0 73 21.3 23.3 91
Elk River 8739 13.3 14.6 91 22.9 21.0 109
Elkhead Divide 8800 14.6 -M * 22.7 -M *
Little Snake River 8915 19.8 23.7 84 32.5 34.4 94
Old Battle 10000 30.3 34.2 89 32.8 36.0 91
Sage Creek Basin 7850 5.6 5.4 104 11.4 13.8 83
Sandstone RS 8150 6.9 9.6 72 16.4 19.0 86
Whiskey Park 8950 25.1 26.6 94 29.8 30.1 99
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Basin Index (%) 85 95
UPPER GREEN RIVER
Big Sandy Opening 9080 11.0 12.8 86 13.5 14.0 96
Blind Bull Sum 8650 22.8 25.0 91 15.9 19.1 83
East Rim Divide 7930 6.1 9.3 66 11.8 11.8 100
Elkhart Park G.S. 9400 9.1 12.9 71 10.6 13.5 79
Gros Ventre Summit 8750 11.7 13.1 89 11.8 13.6 87
Gunsight Pass 9820 13.1 13.2 99 14.7 15.0 98
Indian Creek 9425 22.6 24.2 93 21.2 20.8 102
Kendall R.S. 7740 7.3 7.7 95 14.9 14.0 106
Larsen Creek 9000 -M 7.2 * 13.3 15.1 88
Loomis Park 8240 10.6 13.0 82 17.1 17.4 98
New Fork Lake 8340 6.4 8.4 76 10.3 11.4 90
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.4 10.2 82 16.9 14.6 116
Spring Creek Divide 9000 23.5 25.6 92 25.0 24.8 101
Triple Peak 8500 21.6 20.6 105 27.6 27.1 102
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Basin Index (%) 89 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.3 6.4 83 13.7 13.4 102
Buck Pasture 9632 12.1 -M * 17.7 -M *
EF Blacks Fork GS 9360 5.9 10.0 59 12.9 12.6 102
Hams Fork 7840 5.0 6.8 74 12.5 11.6 108
Henrys Fork 10182 -M -M * 12.2 -M *
Hewinta 9500 5.6 7.3 77 15.5 15.2 102
Hickerson Park 9122 3.0 4.8 62 11.4 11.6 98
Hole-in-Rock 9168 1.2 5.6 21 10.6 11.3 94
Indian Creek 9425 22.6 24.2 93 21.2 20.8 102
Kelley R.S. 8180 11.2 13.8 81 17.8 17.6 101
Spirit Lk 10235 9.3 13.2 70 17.2 19.3 89
Steel Creek Park 10158 15.1 16.2 93 18.4 17.8 103
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Basin Index (%) 78 100
UPPER BEAR RIVER
Bear River RS 8777 2.4 1.5 160 14.9 13.0 115
Bug Lake 7987 16.0 16.7 96 20.4 18.9 108
Burts Miller Ranch 8000 .0 .0 * 8.8 8.7 101
Chalk Creek #1 9171 19.9 22.2 90 24.9 24.4 102
Giveout 6930 1.4 1.9 74 13.4 13.4 100
Hayden Fork 9130 6.9 11.2 62 23.2 21.9 106
Kelley R.S. 8180 11.2 13.8 81 17.8 17.6 101
Lily Lake 9133 10.0 10.8 93 17.0 16.4 104
Monte Cristo 8932 22.3 25.8 86 27.5 27.0 102
Salt River Summit 7640 12.7 11.0 115 17.4 17.2 101
Spring Creek Divide 9000 23.5 25.6 92 25.0 24.8 101
Trial Lake 9992 22.0 22.0 100 23.5 23.4 100
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Basin Index (%) 91 103
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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.
