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 WEDNESDAY: APRIL 13 , 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 11.8 14.6 81 17.0 20.3 84
Blind Bull Sum 8650 19.7 24.5 80 14.2 17.8 80
Cottonwood Creek 7670 16.8 21.0 80 23.7 25.7 92
East Rim Divide 7930 6.2 10.0 62 10.8 11.4 95
Grand Targhee 9260 31.1 45.4 69 26.5 33.1 80
Granite Creek 6770 11.2 13.8 81 -M 18.7 *
Grassy Lake 7265 21.6 32.3 67 30.3 35.7 85
Gros Ventre Summit 8750 10.3 12.8 80 10.6 12.4 85
Gunsight Pass 9820 12.1 12.8 95 12.9 14.4 90
Lewis Lake Divide 7850 21.7 32.0 68 30.5 33.4 91
Loomis Park 8240 10.1 14.8 68 15.5 17.0 91
Phillips Bench 8200 19.5 26.2 74 23.4 26.8 87
Salt River Summit 7640 11.6 12.0 97 15.6 16.4 95
Snake River Station 6920 8.3 15.2 55 17.8 22.8 78
Somsen Ranch 6800 10.4 9.8 106 14.8 16.8 88
Spring Creek Divide 9000 20.2 25.1 80 22.3 23.6 94
Thumb Divide 7980 13.4 15.8 85 16.9 18.3 92
Togwotee Pass 9580 19.8 23.9 83 21.1 25.0 84
Triple Peak 8500 18.8 22.4 84 24.5 25.6 96
Two Ocean Plateau 9240 27.0 30.7 88 24.0 27.4 88
Willow Creek 8080 22.3 28.6 78 30.5 34.1 89
Younts Peak 8350 13.2 14.4 92 10.2 15.2 67
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Basin Index (%) 78 87
MADISON HEADWATERS IN WYOMING
Black Bear 8170 27.8 38.6 72 29.7 37.6 79
Canyon 7870 8.8 -M * 11.8 -M *
Madison Plateau 7750 16.2 23.2 70 20.1 25.2 80
West Yellowstone 6700 4.8 8.2 59 12.0 14.0 86
Whiskey Creek 6800 10.9 15.2 72 14.6 20.8 70
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Basin Index (%) 70 78
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.8 22.2 71 15.4 20.4 75
Canyon 7870 8.8 -M * 11.8 -M *
Evening Star 9200 24.3 25.4 96 24.0 28.6 84
Fisher Creek 9100 27.4 34.0 81 28.9 34.0 85
Monument Peak 8850 16.0 21.2 75 19.7 22.4 88
Northeast Entrance 7350 4.4 8.2 54 10.8 13.3 81
Parker Peak 9400 18.7 21.9 85 18.7 20.4 92
Sylvan Lake 8420 14.3 20.0 72 20.4 23.6 86
Thumb Divide 7980 13.4 15.8 85 16.9 18.3 92
Two Ocean Plateau 9240 27.0 30.7 88 24.0 27.4 88
White Mill 8700 18.8 24.9 76 18.7 23.4 80
Wolverine 7650 8.8 8.8 100 11.6 12.8 91
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Basin Index (%) 81 85
WIND RIVER
Burroughs Creek 8750 8.8 -M * 13.3 -M *
Castle Creek 8400 4.0 6.0 67 7.2 9.0 80
Cold Springs 9630 7.1 6.9 103 12.0 9.7 124
Deer Park 9700 12.1 15.2 80 16.1 18.7 86
Hobbs Park 10100 14.0 15.4 91 15.0 14.2 106
Kirwin 9550 11.9 11.2 106 12.8 12.4 103
Little Warm 9370 10.5 9.8 107 13.6 12.0 113
South Pass 9040 10.9 15.6 70 13.1 16.4 80
St. Lawrence Alt 8620 .4 -M * 8.8 -M *
Togwotee Pass 9580 19.8 23.9 83 21.1 25.0 84
Townsend Creek 8700 8.7 9.9 88 12.0 12.5 96
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Basin Index (%) 87 95
BIGHORN BASIN
Bald Mtn. 9380 15.4 19.6 79 14.1 16.4 86
Bear Trap Meadow 8200 5.5 5.6 98 9.7 9.4 103
Bone Springs Div 9350 15.3 18.0 85 12.8 16.3 79
Grave Springs 8550 6.7 8.8 76 8.6 10.2 84
Kirwin 9550 11.9 11.2 106 12.8 12.4 103
Marquette 8760 5.4 7.6 71 9.0 10.0 90
Middle Powder 7760 9.2 11.4 81 10.0 10.2 98
Owl Creek 8975 5.2 5.4 96 7.6 6.6 115
Powder River Pass 9480 9.5 10.6 90 9.7 13.3 73
Shell Creek 9580 14.2 16.1 88 13.9 14.2 98
Timber Creek 7950 4.2 5.2 81 8.0 8.3 96
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Basin Index (%) 86 91
SHOSHONE RIVER
Blackwater 9780 19.3 24.0 80 20.8 22.6 92
Evening Star 9200 24.3 25.4 96 24.0 28.6 84
Marquette 8760 5.4 7.6 71 9.0 10.0 90
Sylvan Lake 8420 14.3 20.0 72 20.4 23.6 86
Sylvan Road 7120 2.6 10.2 25 13.6 16.5 82
Younts Peak 8350 13.2 14.4 92 10.2 15.2 67
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Basin Index (%) 78 84
POWDER RIVER
Bear Trap Meadow 8200 5.5 5.6 98 9.7 9.4 103
Cloud Peak Reservoir 9860 14.1 15.2 93 15.2 14.2 107
Grave Springs 8550 6.7 8.8 76 8.6 10.2 84
Hansen Sawmill 8360 6.9 6.2 111 10.3 8.8 117
Middle Powder 7760 9.2 11.4 81 10.0 10.2 98
Powder River Pass 9480 9.5 10.6 90 9.7 13.3 73
Soldier Park 8720 4.2 6.1 69 10.5 10.0 105
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Basin Index (%) 88 97
TONGUE RIVER
Big Goose 7990 8.0 9.0 89 11.9 10.6 112
Bone Springs Div 9350 15.3 18.0 85 12.8 16.3 79
Burgess Junction 7880 11.0 11.4 96 12.7 12.6 101
Dome Lake 8880 13.0 11.8 110 14.3 13.6 105
Little Goose 8870 9.6 10.4 92 14.4 12.8 112
Sucker Creek 8880 11.9 12.5 95 15.9 14.8 107
Tie Creek 6870 3.2 4.4 73 11.9 11.4 104
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Basin Index (%) 93 102
BELLE FOURCHE
Blind Park 6890 1.2 5.1 24 9.9 11.9 83
Cole Canyon 5910 3.5 3.7 95 9.8 9.6 102
North Rapid Creek 6130 5.0 5.8 86 6.6 9.5 69
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Basin Index (%) 66 85
CHEYENNE RIVER BASIN
Blind Park 6890 1.2 5.1 24 9.9 11.9 83
North Rapid Creek 6130 5.0 5.8 86 6.6 9.5 69
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Basin Index (%) 57 77
UPPER N. PLATTE
Arapaho Ridge 10960 20.5 22.8 90 20.8 22.4 93
Blackhall Mtn 9820 27.9 30.6 91 29.4 30.4 97
Cinnabar Park 9574 17.2 20.8 83 20.6 24.0 86
Columbine 9160 18.5 22.0 84 23.6 25.9 91
Divide Peak 8880 15.5 20.0 78 20.5 21.8 94
Joe Wright 10120 21.5 21.6 100 29.1 26.2 111
Laprele Creek 8375 7.2 9.0 80 11.6 12.2 95
Med Bow 10500 31.1 -M * 29.2 -M *
Never Summer 10280 22.6 20.8 109 17.7 17.8 99
North French Creek 10130 23.4 31.2 75 25.6 28.0 91
Old Battle 10000 28.3 32.2 88 30.4 35.4 86
Rawah 9020 10.8 10.3 105 15.7 16.2 97
Sage Creek Basin 7850 9.7 11.2 87 11.0 13.3 83
Sand Lake 10050 25.3 29.4 86 25.1 26.0 97
South Brush Creek 8440 7.4 10.2 73 12.3 14.1 87
Tower 10500 32.3 45.0 72 38.7 40.8 95
Webber Springs 9250 19.6 21.6 91 25.3 25.9 98
Whiskey Park 8950 24.3 26.6 91 27.6 28.0 99
Willow Creek Pass 9540 15.3 14.0 109 15.3 14.0 109
Zirkel 9340 21.0 25.6 82 31.3 31.0 101
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Basin Index (%) 87 95
SWEETWATER
Deer Park 9700 12.1 15.2 80 16.1 18.7 86
Larsen Creek 9000 -M 8.5 * 12.1 14.0 86
South Pass 9040 10.9 15.6 70 13.1 16.4 80
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Basin Index (%) 75 84
LOWER N. PLATTE
Casper Mtn. 7900 11.8 13.7 86 16.1 14.2 113
Laprele Creek 8375 7.2 9.0 80 11.6 12.2 95
Reno Hill 8400 14.1 14.4 98 18.1 16.2 112
Windy Peak 7900 7.7 7.4 104 11.3 10.5 108
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Basin Index (%) 92 108
LARAMIE RIVER
Brooklyn Lake 10240 19.1 22.6 85 22.5 22.6 100
Cinnabar Park 9574 17.2 20.8 83 20.6 24.0 86
Crow Creek 8330 4.0 5.0 80 10.1 10.9 93
Deadman Hill 10220 20.0 16.8 119 18.8 18.5 102
Rawah 9020 10.8 10.3 105 15.7 16.2 97
Roach 9700 16.4 15.6 105 20.1 19.8 102
Windy Peak 7900 7.7 7.4 104 11.3 10.5 108
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Basin Index (%) 97 97
S. PLATTE
Crow Creek 8330 4.0 5.0 80 10.1 10.9 93
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Basin Index (%) 80 93
LITTLE SNAKE RIVER
Battle Mountain 7440 5.7 8.2 70 15.8 15.6 101
Divide Peak 8880 15.5 20.0 78 20.5 21.8 94
Elk River 8700 15.3 17.0 90 21.6 20.0 108
Elkhead Divide 8780 16.5 -M * 21.8 -M *
Little Snake River 8915 20.7 26.2 79 30.5 32.8 93
Old Battle 10000 28.3 32.2 88 30.4 35.4 86
Sage Creek Basin 7850 9.7 11.2 87 11.0 13.3 83
Sandstone RS 8150 10.3 12.2 84 15.6 18.3 85
Whiskey Park 8950 24.3 26.6 91 27.6 28.0 99
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Basin Index (%) 85 93
UPPER GREEN RIVER
Big Sandy Opening 9080 9.9 13.4 74 12.0 13.5 89
Blind Bull Sum 8650 19.7 24.5 80 14.2 17.8 80
East Rim Divide 7930 6.2 10.0 62 10.8 11.4 95
Elkhart Park G.S. 9400 8.1 12.8 63 9.3 12.9 72
Gros Ventre Summit 8750 10.3 12.8 80 10.6 12.4 85
Gunsight Pass 9820 12.1 12.8 95 12.9 14.4 90
Indian Creek 9425 19.5 23.5 83 19.1 19.8 96
Kendall R.S. 7740 6.5 10.2 64 13.6 13.3 102
Larsen Creek 9000 -M 8.5 * 12.1 14.0 86
Loomis Park 8240 10.1 14.8 68 15.5 17.0 91
New Fork Lake 8340 6.5 9.9 66 -M 10.8 *
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.0 11.8 68 15.5 14.0 111
Spring Creek Divide 9000 20.2 25.1 80 22.3 23.6 94
Triple Peak 8500 18.8 22.4 84 24.5 25.6 96
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Basin Index (%) 76 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.5 7.6 86 12.5 12.4 101
Buck Pasture 9632 12.1 -M * 16.1 -M *
EF Blacks Fork GS 9360 6.8 11.8 58 11.7 11.4 103
Hams Fork 7840 5.2 9.2 57 11.4 11.2 102
Henrys Fork 10182 -M -M * 11.6 -M *
Hewinta 9500 6.5 9.8 66 14.1 13.6 104
Hickerson Park 9122 6.6 6.8 97 11.0 10.8 102
Hole-in-Rock 9168 4.8 7.2 67 9.7 10.4 93
Indian Creek 9425 19.5 23.5 83 19.1 19.8 96
Kelley R.S. 8180 10.1 14.6 69 16.1 16.4 98
Spirit Lk 10235 12.6 13.6 93 16.6 18.1 92
Steel Creek Park 10158 14.3 15.4 93 16.8 16.8 100
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Basin Index (%) 78 99
UPPER BEAR RIVER
Bear River RS 8777 5.4 6.9 78 13.6 12.2 111
Bug Lake 7987 15.4 18.4 84 18.8 18.4 102
Burts Miller Ranch 8000 2.7 2.3 117 7.8 8.1 96
Chalk Creek #1 9171 18.1 23.1 78 21.8 23.4 93
Giveout 6930 2.9 5.4 54 12.4 12.7 98
Hayden Fork 9130 9.7 14.2 68 21.0 21.1 100
Kelley R.S. 8180 10.1 14.6 69 16.1 16.4 98
Lily Lake 9133 10.4 12.6 83 15.4 15.6 99
Monte Cristo 8932 20.4 27.2 75 25.0 26.4 95
Salt River Summit 7640 11.6 12.0 97 15.6 16.4 95
Spring Creek Divide 9000 20.2 25.1 80 22.3 23.6 94
Trial Lake 9992 18.8 22.2 85 21.0 22.6 93
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Basin Index (%) 79 97
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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.
