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: FEBRUARY 8 , 2021
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
Base Camp 7060 12.6 11.2 112 14.1 14.6 97
Blind Bull Sum 8650 13.7 14.9 92 9.9 13.5 73
Cottonwood Creek 7670 13.8 13.6 101 15.6 16.6 94
East Rim Divide 7930 6.4 7.0 91 6.2 8.1 77
Grand Targhee 9260 25.6 24.6 104 19.5 21.6 90
Granite Creek 6770 10.5 11.3 93 12.7 14.3 89
Grassy Lake 7265 19.9 21.7 92 22.1 25.1 88
Gros Ventre Summit 8750 6.1 8.7 70 7.6 8.6 88
Gunsight Pass 9820 8.2 8.7 94 7.8 9.4 83
Lewis Lake Divide 7850 19.0 21.2 90 21.3 24.2 88
Loomis Park 8240 8.6 10.0 86 10.0 11.8 85
Phillips Bench 8200 16.6 16.5 101 18.0 19.1 94
Salt River Summit 7640 7.6 8.3 92 8.8 11.2 79
Snake River Station 6920 10.9 11.9 92 14.3 16.2 88
Somsen Ranch 6800 7.7 9.3 83 9.1 11.6 78
Spring Creek Divide 9000 14.2 15.4 92 14.7 16.1 91
Thumb Divide 7980 9.7 9.8 99 10.2 12.7 80
Togwotee Pass 9580 16.0 15.6 103 17.5 16.6 105
Triple Peak 8500 15.1 14.0 108 16.0 16.8 95
Two Ocean Plateau 9240 17.7 18.7 95 10.5 18.2 58
Willow Creek 8080 15.8 18.1 87 17.1 22.5 76
Younts Peak 8350 9.8 10.1 97 11.2 10.9 103
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Basin Index (%) 95 87
MADISON HEADWATERS IN WYOMING
Black Bear 8170 21.0 24.7 85 21.3 26.0 82
Canyon 7870 8.6 8.6 100 9.4 11.3 83
Madison Plateau 7750 13.4 14.8 91 14.4 18.1 80
West Yellowstone 6700 7.2 7.2 100 9.1 10.2 89
Whiskey Creek 6800 9.3 9.9 94 12.1 13.9 87
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Basin Index (%) 91 83
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 15.9 14.5 110 15.6 13.4 116
Canyon 7870 8.6 8.6 100 9.4 11.3 83
Evening Star 9200 20.1 16.7 120 21.9 18.8 116
Fisher Creek 9100 23.7 21.6 110 25.4 21.8 117
Monument Peak 8850 15.8 12.5 126 18.3 14.7 124
Northeast Entrance 7350 6.0 6.7 90 11.7 8.6 136
Parker Peak 9400 16.2 13.5 120 16.5 11.9 139
Sylvan Lake 8420 12.0 13.5 89 15.5 15.5 100
Thumb Divide 7980 9.7 9.8 99 10.2 12.7 80
Two Ocean Plateau 9240 17.7 18.7 95 10.5 18.2 58
White Mill 8700 19.6 15.3 128 19.2 16.2 119
Wolverine 7650 7.1 7.3 97 12.5 8.5 147
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Basin Index (%) 109 109
WIND RIVER
Burroughs Creek 8750 6.8 -M * 10.6 -M *
Castle Creek 8400 3.6 -M * 5.4 -M *
Cold Springs 9630 3.4 4.8 71 5.0 6.5 77
Deer Park 9700 6.6 9.5 69 8.2 13.0 63
Grave Springs 8550 3.6 5.1 71 4.3 6.8 63
Hobbs Park 10100 -M 8.0 * -M 8.1 *
Kirwin 9550 6.4 6.1 105 7.2 7.5 96
Little Warm 9370 6.2 6.6 94 8.1 8.5 95
South Pass 9040 6.2 9.7 64 6.7 11.5 58
St. Lawrence Alt 8620 1.0 4.2 24 2.5 5.6 45
Togwotee Pass 9580 16.0 15.6 103 17.5 16.6 105
Townsend Creek 8700 3.2 5.6 57 4.7 7.4 64
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Basin Index (%) 78 77
BIGHORN BASIN
Bald Mtn. 9380 12.1 11.3 107 10.7 11.1 96
Bear Trap Meadow 8200 4.1 3.6 114 5.8 5.3 109
Bone Springs Div 9350 10.7 10.0 107 8.1 10.0 81
Grave Springs 8550 3.6 5.1 71 4.3 6.8 63
Kirwin 9550 6.4 6.1 105 7.2 7.5 96
Marquette 8760 2.4 -M * 3.5 -M *
Middle Powder 7760 5.7 6.7 85 5.6 7.7 73
Owl Creek 8975 2.3 3.1 74 2.5 3.7 68
Powder River Pass 9480 7.9 6.9 114 6.6 8.2 80
Shell Creek 9580 10.5 9.5 111 8.6 9.2 93
Timber Creek 7950 1.4 3.1 45 2.4 4.6 52
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Basin Index (%) 99 83
SHOSHONE RIVER
Blackwater 9780 14.2 15.0 95 14.7 13.8 107
Evening Star 9200 20.1 16.7 120 21.9 18.8 116
Marquette 8760 2.4 -M * 3.5 -M *
Sylvan Lake 8420 12.0 13.5 89 15.5 15.5 100
Sylvan Road 7120 7.4 8.0 92 8.6 12.4 69
Younts Peak 8350 9.8 10.1 97 11.2 10.9 103
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Basin Index (%) 100 101
POWDER RIVER
Bear Trap Meadow 8200 4.1 3.6 114 5.8 5.3 109
Cloud Peak Reservoir 9860 8.5 8.8 97 8.8 8.2 107
Grave Springs 8550 3.6 5.1 71 4.3 6.8 63
Hansen Sawmill 8360 4.0 4.1 98 4.7 5.3 89
Middle Powder 7760 5.7 6.7 85 5.6 7.7 73
Powder River Pass 9480 7.9 6.9 114 6.6 8.2 80
Soldier Park 8720 2.1 -M * 5.4 -M *
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Basin Index (%) 96 86
TONGUE RIVER
Big Goose 7990 5.0 5.1 98 7.8 6.8 115
Bone Springs Div 9350 10.7 10.0 107 8.1 10.0 81
Burgess Junction 7880 6.9 7.0 99 9.1 7.8 117
Dome Lake 8880 7.2 7.2 100 8.6 8.7 99
Little Goose 8870 6.5 -M * 8.6 -M *
Sucker Creek 8880 8.8 7.4 119 11.4 9.1 125
Tie Creek 6870 2.6 3.6 72 6.6 7.4 89
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Basin Index (%) 102 104
BELLE FOURCHE
Blind Park 6890 3.7 5.2 71 6.0 8.1 74
Cole Canyon 5910 2.2 3.7 59 5.0 6.1 82
North Rapid Creek 6130 4.0 4.7 85 5.8 6.5 89
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Basin Index (%) 73 81
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 5.2 71 6.0 8.1 74
North Rapid Creek 6130 4.0 4.7 85 5.8 6.5 89
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Basin Index (%) 78 81
UPPER N. PLATTE
Arapaho Ridge 10960 12.9 13.9 93 12.7 15.0 85
Blackhall Mtn 9820 16.7 -M * 17.5 -M *
Cinnabar Park 9574 11.1 13.8 80 12.8 16.9 76
Columbine 9160 13.1 15.6 84 12.6 17.1 74
Divide Peak 8880 9.6 13.3 72 11.4 14.4 79
Joe Wright 10120 11.2 13.4 84 13.9 16.8 83
Laprele Creek 8375 4.8 5.8 83 6.1 7.9 77
Med Bow 10500 25.0 -M * 21.9 -M *
Never Summer 10280 11.2 13.1 85 8.1 -M *
North French Creek 10130 17.6 16.9 104 16.6 17.5 95
Old Battle 10000 17.7 20.4 87 17.4 23.5 74
Rawah 9020 6.7 6.7 100 8.3 9.4 88
Sage Creek Basin 7850 7.2 8.9 81 7.0 10.3 68
Sand Lake 10050 17.4 17.3 101 16.0 15.8 101
South Brush Creek 8440 6.5 7.6 86 6.8 9.9 69
Tower 10500 19.7 29.5 67 20.3 26.7 76
Webber Springs 9250 12.8 15.0 85 13.4 17.8 75
Whiskey Park 8950 17.2 17.1 101 16.4 18.8 87
Willow Creek Pass 9540 6.8 8.0 85 6.0 8.6 70
Zirkel 9340 13.4 19.4 69 16.8 20.1 84
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Basin Index (%) 85 80
SWEETWATER
Deer Park 9700 6.6 9.5 69 8.2 13.0 63
Larsen Creek 9000 3.9 7.9 49 5.8 -M *
South Pass 9040 6.2 9.7 64 6.7 11.5 58
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Basin Index (%) 62 61
LOWER N. PLATTE
Casper Mtn. 7900 5.4 8.0 68 5.5 9.4 59
Laprele Creek 8375 4.8 5.8 83 6.1 7.9 77
Reno Hill 8400 6.0 8.2 73 7.1 9.4 76
Windy Peak 7900 3.1 4.4 70 4.8 6.6 73
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Basin Index (%) 73 71
LARAMIE RIVER
Brooklyn Lake 10240 14.1 12.4 114 15.0 13.5 111
Cinnabar Park 9574 11.1 13.8 80 12.8 16.9 76
Crow Creek 8330 1.0 5.7 18 4.7 6.6 71
Deadman Hill 10220 10.2 10.6 96 9.7 10.7 91
Rawah 9020 6.7 6.7 100 8.3 9.4 88
Roach 9700 8.2 10.6 77 9.0 12.4 73
Windy Peak 7900 3.1 4.4 70 4.8 6.6 73
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Basin Index (%) 85 84
S. PLATTE
Crow Creek 8330 1.0 5.7 18 4.7 6.6 71
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Basin Index (%) 18 71
LITTLE SNAKE RIVER
Battle Mountain 7440 5.6 7.5 75 5.3 10.1 52
Divide Peak 8880 9.6 13.3 72 11.4 14.4 79
Elk River 8700 10.2 12.2 84 7.6 13.4 57
Elkhead Divide 8780 9.1 -M * 10.4 -M *
Little Snake River 8915 14.4 16.6 87 18.1 21.8 83
Old Battle 10000 17.7 20.4 87 17.4 23.5 74
Sage Creek Basin 7850 7.2 8.9 81 7.0 10.3 68
Sandstone RS 8150 8.9 8.6 103 7.0 12.5 56
Whiskey Park 8950 17.2 17.1 101 16.4 18.8 87
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Basin Index (%) 87 72
UPPER GREEN RIVER
Big Sandy Opening 9080 6.3 8.6 73 6.0 8.7 69
Blind Bull Sum 8650 13.7 14.9 92 9.9 13.5 73
East Rim Divide 7930 6.4 7.0 91 6.2 8.1 77
Elkhart Park G.S. 9400 6.4 7.8 82 5.3 8.9 60
Gros Ventre Summit 8750 6.1 8.7 70 7.6 8.6 88
Gunsight Pass 9820 8.2 8.7 94 7.8 9.4 83
Indian Creek 9425 12.3 15.2 81 11.1 14.8 75
Kendall R.S. 7740 7.9 8.1 98 9.1 9.7 94
Larsen Creek 9000 3.9 7.9 49 5.8 -M *
Loomis Park 8240 8.6 10.0 86 10.0 11.8 85
New Fork Lake 8340 6.1 7.0 87 6.8 7.4 92
Pocket Creek 9360 -M -M * 5.0 -M *
Snider Basin 8060 8.1 8.2 99 9.6 9.7 99
Spring Creek Divide 9000 14.2 15.4 92 14.7 16.1 91
Triple Peak 8500 15.1 14.0 108 16.0 16.8 95
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Basin Index (%) 87 84
LOWER GREEN RIVER
Blacks Fork Jct 8869 3.7 -M * 5.6 -M *
Buck Pasture 9632 7.3 -M * 8.1 -M *
EF Blacks Fork GS 9360 5.0 -M * 6.7 -M *
Hams Fork 7840 7.5 7.6 99 6.8 7.6 89
Henrys Fork 10182 -M -M * 6.2 -M *
Hewinta 9500 4.8 6.3 76 7.7 9.0 86
Hickerson Park 9122 3.9 4.1 95 4.9 6.4 77
Hole-in-Rock 9168 3.3 4.2 79 5.3 6.0 88
Indian Creek 9425 12.3 15.2 81 11.1 14.8 75
Kelley R.S. 8180 8.8 9.5 93 9.7 12.1 80
Spirit Lk 10235 6.7 -M * 7.6 -M *
Steel Creek Park 10158 8.0 9.2 87 9.2 10.4 88
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Basin Index (%) 87 83
UPPER BEAR RIVER
Bear River RS 8777 4.2 -M * 6.1 -M *
Bug Lake 7987 9.4 12.0 78 9.3 13.0 72
Burts Miller Ranch 8000 2.8 -M * 4.9 -M *
Chalk Creek #1 9171 8.5 14.1 60 10.1 16.4 62
Dry Bread Pond 8302 8.3 13.0 64 8.9 13.1 68
Giveout 6930 5.2 6.4 81 7.1 8.7 82
Hayden Fork 9130 6.9 9.2 75 10.4 13.8 75
Kelley R.S. 8180 8.8 9.5 93 9.7 12.1 80
Lily Lake 9133 5.5 7.7 71 6.7 11.2 60
Monte Cristo 8932 11.6 16.8 69 11.4 17.1 67
Salt River Summit 7640 7.6 8.3 92 8.8 11.2 79
Spring Creek Divide 9000 14.2 15.4 92 14.7 16.1 91
Trial Lake 9992 9.8 13.7 72 9.8 15.4 64
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Basin Index (%) 76 72
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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.
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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.