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: MARCH 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 11.4 15.7 73 14.3 17.8 80
Blind Bull Sum 8650 16.2 20.8 78 12.0 15.9 75
Cottonwood Creek 7670 14.8 19.0 78 20.6 21.5 96
East Rim Divide 7930 7.9 9.7 81 9.7 10.0 97
Grand Targhee 9260 25.3 34.8 73 23.1 27.0 86
Granite Creek 6770 10.1 15.2 66 -M 16.6 *
Grassy Lake 7265 18.5 27.8 67 25.9 30.6 85
Gros Ventre Summit 8750 9.3 10.7 87 9.5 10.4 91
Gunsight Pass 9820 10.9 11.4 96 11.5 11.9 97
Lewis Lake Divide 7850 19.9 26.5 75 27.1 28.2 96
Loomis Park 8240 10.4 13.5 77 13.1 14.6 90
Phillips Bench 8200 16.0 22.2 72 19.5 23.3 84
Salt River Summit 7640 10.4 11.6 90 13.9 13.4 104
Snake River Station 6920 10.1 15.4 66 16.0 19.1 84
Somsen Ranch 6800 8.8 11.7 75 14.8 14.4 103
Spring Creek Divide 9000 16.9 21.0 80 19.1 20.8 92
Thumb Divide 7980 12.4 14.0 89 14.9 14.9 100
Togwotee Pass 9580 17.2 21.0 82 18.0 22.1 81
Triple Peak 8500 16.5 21.1 78 20.7 22.4 92
Two Ocean Plateau 9240 21.8 24.8 88 19.6 23.0 85
Willow Creek 8080 19.8 26.2 76 25.8 28.3 91
Younts Peak 8350 12.2 13.1 93 8.9 12.8 70
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Basin Index (%) 78 89
MADISON HEADWATERS IN WYOMING
Black Bear 8170 25.4 32.7 78 26.1 32.1 81
Canyon 7870 7.4 -M * 10.4 -M *
Madison Plateau 7750 14.5 19.4 75 17.7 21.6 82
West Yellowstone 6700 7.5 10.0 75 10.6 12.7 83
Whiskey Creek 6800 9.5 14.0 68 -M 17.2 *
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Basin Index (%) 75 82
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 14.1 19.2 73 13.3 17.6 76
Canyon 7870 7.4 -M * 10.4 -M *
Evening Star 9200 21.1 22.6 93 20.9 24.8 84
Fisher Creek 9100 23.5 28.2 83 24.9 27.7 90
Monument Peak 8850 14.1 18.2 77 17.0 18.2 93
Northeast Entrance 7350 5.3 9.3 57 9.2 11.6 79
Parker Peak 9400 16.2 18.5 88 16.0 17.5 91
Sylvan Lake 8420 13.1 17.1 77 17.7 19.4 91
Thumb Divide 7980 12.4 14.0 89 14.9 14.9 100
Two Ocean Plateau 9240 21.8 24.8 88 19.6 23.0 85
White Mill 8700 15.9 20.9 76 15.7 20.2 78
Wolverine 7650 9.6 10.8 89 10.2 11.0 93
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Basin Index (%) 82 87
WIND RIVER
Burroughs Creek 8750 7.9 -M * 11.0 -M *
Castle Creek 8400 5.1 6.9 74 6.2 7.5 83
Cold Springs 9630 8.6 6.3 137 10.8 7.4 146
Deer Park 9700 9.7 11.4 85 13.0 14.4 90
Hobbs Park 10100 12.5 11.4 110 13.0 10.1 129
Kirwin 9550 9.7 9.2 105 10.9 10.0 109
Little Warm 9370 9.6 8.9 108 11.9 10.3 116
South Pass 9040 9.5 12.5 76 11.7 12.6 93
St. Lawrence Alt 8620 2.0 -M * 7.7 -M *
Togwotee Pass 9580 17.2 21.0 82 18.0 22.1 81
Townsend Creek 8700 7.5 7.6 99 10.3 8.6 120
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Basin Index (%) 94 103
BIGHORN BASIN
Bald Mtn. 9380 12.8 16.0 80 11.9 13.5 88
Bear Trap Meadow 8200 5.4 5.7 95 7.4 6.7 110
Bone Springs Div 9350 12.5 13.8 91 10.8 12.8 84
Grave Springs 8550 5.2 7.4 70 7.0 7.8 90
Kirwin 9550 9.7 9.2 105 10.9 10.0 109
Marquette 8760 3.4 5.8 59 6.8 7.2 94
Middle Powder 7760 6.4 8.8 73 7.4 8.4 88
Owl Creek 8975 5.5 4.6 120 6.2 5.0 124
Powder River Pass 9480 8.1 9.2 88 7.3 10.4 70
Shell Creek 9580 11.0 12.6 87 11.0 11.4 96
Timber Creek 7950 3.6 4.3 84 5.9 6.2 95
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Basin Index (%) 86 93
SHOSHONE RIVER
Blackwater 9780 16.2 19.6 83 17.8 18.6 96
Evening Star 9200 21.1 22.6 93 20.9 24.8 84
Marquette 8760 3.4 5.8 59 6.8 7.2 94
Sylvan Lake 8420 13.1 17.1 77 17.7 19.4 91
Sylvan Road 7120 6.8 10.4 65 -M 14.6 *
Younts Peak 8350 12.2 13.1 93 8.9 12.8 70
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Basin Index (%) 82 87
POWDER RIVER
Bear Trap Meadow 8200 5.4 5.7 95 7.4 6.7 110
Cloud Peak Reservoir 9860 11.0 12.4 89 11.6 11.0 105
Grave Springs 8550 5.2 7.4 70 7.0 7.8 90
Hansen Sawmill 8360 5.7 5.8 98 8.0 7.0 114
Middle Powder 7760 6.4 8.8 73 7.4 8.4 88
Powder River Pass 9480 8.1 9.2 88 7.3 10.4 70
Soldier Park 8720 2.9 5.8 50 8.1 7.7 105
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Basin Index (%) 81 96
TONGUE RIVER
Big Goose 7990 5.5 6.7 82 9.1 8.2 111
Bone Springs Div 9350 12.5 13.8 91 10.8 12.8 84
Burgess Junction 7880 8.5 9.1 93 10.7 9.9 108
Dome Lake 8880 9.6 9.6 100 10.9 10.1 108
Little Goose 8870 7.0 7.8 90 10.7 9.8 109
Sucker Creek 8880 9.7 10.4 93 12.8 11.6 110
Tie Creek 6870 3.7 4.9 76 9.7 8.9 109
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Basin Index (%) 91 105
BELLE FOURCHE
Blind Park 6890 3.9 7.0 56 7.2 9.3 77
Cole Canyon 5910 3.5 5.1 69 7.6 7.4 103
North Rapid Creek 6130 5.0 6.2 81 5.2 7.6 68
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Basin Index (%) 68 82
CHEYENNE RIVER BASIN
Blind Park 6890 3.9 7.0 56 7.2 9.3 77
North Rapid Creek 6130 5.0 6.2 81 5.2 7.6 68
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Basin Index (%) 67 73
UPPER N. PLATTE
Arapaho Ridge 10960 17.9 18.3 98 17.1 18.4 93
Blackhall Mtn 9820 25.3 24.0 105 26.3 23.6 111
Cinnabar Park 9574 16.5 18.4 90 18.7 20.8 90
Columbine 9160 17.8 20.7 86 20.3 20.8 98
Divide Peak 8880 13.9 16.9 82 18.2 18.2 100
Joe Wright 10120 18.4 18.0 102 24.4 22.2 110
Laprele Creek 8375 6.0 8.3 72 9.7 9.6 101
Med Bow 10500 27.0 -M * 25.2 -M *
Never Summer 10280 18.1 17.2 105 13.7 14.5 94
North French Creek 10130 20.8 24.0 87 22.1 22.2 100
Old Battle 10000 24.7 26.0 95 26.7 28.4 94
Rawah 9020 9.3 9.6 97 11.9 13.2 90
Sage Creek Basin 7850 11.3 12.6 90 9.6 11.1 86
Sand Lake 10050 21.3 22.4 95 21.5 20.5 105
South Brush Creek 8440 8.6 10.3 83 10.7 11.5 93
Tower 10500 33.5 37.8 89 33.6 34.4 98
Webber Springs 9250 18.3 18.8 97 21.9 21.2 103
Whiskey Park 8950 21.9 23.8 92 24.9 23.8 105
Willow Creek Pass 9540 12.3 11.0 112 12.6 11.6 109
Zirkel 9340 21.8 25.0 87 28.6 26.5 108
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Basin Index (%) 93 100
SWEETWATER
Deer Park 9700 9.7 11.4 85 13.0 14.4 90
Larsen Creek 9000 -M 10.2 * 10.0 11.1 90
South Pass 9040 9.5 12.5 76 11.7 12.6 93
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Basin Index (%) 80 91
LOWER N. PLATTE
Casper Mtn. 7900 8.8 11.0 80 13.1 11.1 118
Laprele Creek 8375 6.0 8.3 72 9.7 9.6 101
Reno Hill 8400 10.3 11.4 90 13.8 11.9 116
Windy Peak 7900 6.6 6.7 99 9.6 8.1 119
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Basin Index (%) 85 114
LARAMIE RIVER
Brooklyn Lake 10240 17.4 17.2 101 19.5 18.2 107
Cinnabar Park 9574 16.5 18.4 90 18.7 20.8 90
Crow Creek 8330 5.0 6.3 79 9.2 8.3 111
Deadman Hill 10220 16.6 14.2 117 14.9 14.4 103
Rawah 9020 9.3 9.6 97 11.9 13.2 90
Roach 9700 14.2 13.2 108 17.0 15.6 109
Windy Peak 7900 6.6 6.7 99 9.6 8.1 119
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Basin Index (%) 100 102
S. PLATTE
Crow Creek 8330 5.0 6.3 79 9.2 8.3 111
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Basin Index (%) 79 111
LITTLE SNAKE RIVER
Battle Mountain 7440 8.9 10.6 84 13.8 13.0 106
Divide Peak 8880 13.9 16.9 82 18.2 18.2 100
Elk River 8700 16.3 16.7 98 19.5 16.2 120
Elkhead Divide 8780 16.4 -M * 19.9 -M *
Little Snake River 8915 19.0 23.2 82 27.6 27.6 100
Old Battle 10000 24.7 26.0 95 26.7 28.4 94
Sage Creek Basin 7850 11.3 12.6 90 9.6 11.1 86
Sandstone RS 8150 11.6 11.8 98 14.0 15.8 89
Whiskey Park 8950 21.9 23.8 92 24.9 23.8 105
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Basin Index (%) 90 100
UPPER GREEN RIVER
Big Sandy Opening 9080 8.1 11.0 74 9.9 10.6 93
Blind Bull Sum 8650 16.2 20.8 78 12.0 15.9 75
East Rim Divide 7930 7.9 9.7 81 9.7 10.0 97
Elkhart Park G.S. 9400 7.1 10.5 68 8.1 10.8 75
Gros Ventre Summit 8750 9.3 10.7 87 9.5 10.4 91
Gunsight Pass 9820 10.9 11.4 96 11.5 11.9 97
Indian Creek 9425 16.8 20.2 83 16.5 17.1 96
Kendall R.S. 7740 8.3 10.8 77 11.8 11.7 101
Larsen Creek 9000 -M 10.2 * 10.0 11.1 90
Loomis Park 8240 10.4 13.5 77 13.1 14.6 90
New Fork Lake 8340 7.1 9.3 76 7.9 9.2 86
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 8.5 11.5 74 13.6 12.4 110
Spring Creek Divide 9000 16.9 21.0 80 19.1 20.8 92
Triple Peak 8500 16.5 21.1 78 20.7 22.4 92
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Basin Index (%) 79 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.0 7.4 108 10.8 10.2 106
Buck Pasture 9632 10.8 -M * 13.1 -M *
EF Blacks Fork GS 9360 6.7 10.0 67 10.2 9.6 106
Hams Fork 7840 8.2 10.2 80 10.2 9.4 109
Henrys Fork 10182 -M -M * 9.9 -M *
Hewinta 9500 8.2 8.8 93 12.5 11.0 114
Hickerson Park 9122 6.2 6.6 94 8.3 8.6 97
Hole-in-Rock 9168 5.7 6.2 92 8.5 8.3 102
Indian Creek 9425 16.8 20.2 83 16.5 17.1 96
Kelley R.S. 8180 9.3 12.8 73 14.3 14.2 101
Spirit Lk 10235 11.3 9.9 114 14.3 13.8 104
Steel Creek Park 10158 12.2 12.5 98 14.6 13.0 112
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Basin Index (%) 89 104
UPPER BEAR RIVER
Bear River RS 8777 8.3 8.0 104 11.7 9.7 121
Bug Lake 7987 12.8 16.3 79 16.5 15.2 109
Burts Miller Ranch 8000 6.6 5.5 120 7.3 6.4 114
Chalk Creek #1 9171 15.7 19.7 80 18.7 19.6 95
Giveout 6930 7.0 8.2 85 10.9 10.2 107
Hayden Fork 9130 12.6 13.0 97 18.0 17.4 103
Kelley R.S. 8180 9.3 12.8 73 14.3 14.2 101
Lily Lake 9133 9.2 11.0 84 13.5 13.4 101
Monte Cristo 8932 19.5 22.9 85 22.1 21.7 102
Salt River Summit 7640 10.4 11.6 90 13.9 13.4 104
Spring Creek Divide 9000 16.9 21.0 80 19.1 20.8 92
Trial Lake 9992 15.7 19.2 82 18.4 18.8 98
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Basin Index (%) 85 102
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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.
