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 FRIDAY: FEBRUARY 7 , 2020
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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 11.5 11.1 104 11.9 14.5 82
Black Bear 8170 24.2 24.3 100 23.0 25.8 89
Blind Bull Sum 8650 17.4 14.7 118 10.5 13.3 79
Cottonwood Creek 7670 18.9 13.6 139 20.1 16.4 123
East Rim Divide 7930 8.6 6.9 125 6.8 8.0 85
Grand Targhee 9260 29.0 24.4 119 20.2 21.5 94
Granite Creek 6770 11.4 11.2 102 11.3 14.1 80
Grassy Lake 7265 22.5 21.4 105 22.6 24.9 91
Gros Ventre Summit 8750 7.5 8.6 87 7.3 8.5 86
Gunsight Pass 9820 8.8 8.6 102 8.9 9.2 97
Lewis Lake Divide 7850 17.6 20.9 84 21.0 23.9 88
Phillips Bench 8200 19.4 16.4 118 18.8 18.9 99
Salt River Summit 7640 10.8 8.3 130 11.2 11.0 102
Snake River Station 6920 12.0 11.7 103 14.1 16.0 88
Spring Creek Divide 9000 17.8 15.3 116 17.2 16.0 108
Thumb Divide 7980 9.9 9.7 102 10.2 12.6 81
Togwotee Pass 9580 17.7 15.5 114 16.7 16.4 102
Two Ocean Plateau 9240 19.5 18.5 105 15.2 17.9 85
Willow Creek 8080 23.3 18.1 129 23.8 22.4 106
Younts Peak 8350 11.3 10.1 112 9.5 10.8 88
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Basin Index (%) 110 93
MADISON-GALLATIN
Black Bear 8170 24.2 24.3 100 23.0 25.8 89
Canyon 7870 9.5 8.5 112 9.8 11.1 88
Madison Plateau 7750 15.2 14.6 104 12.8 18.0 71
West Yellowstone 6700 8.1 7.2 112 7.0 10.0 70
Whiskey Creek 6800 10.9 9.8 111 12.5 13.7 91
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Basin Index (%) 105 83
YELLOWSTONE
Beartooth Lake 9360 15.3 14.4 106 14.0 13.3 105
Burnt Mtn 5880 3.6 2.7 133 8.4 8.2 102
Canyon 7870 9.5 8.5 112 9.8 11.1 88
Cole Creek 7850 11.2 8.7 129 9.1 7.9 115
Evening Star 9200 18.7 16.7 112 20.4 18.6 110
Fisher Creek 9100 21.2 21.5 99 21.9 21.6 101
Northeast Entrance 7350 7.6 6.7 113 8.7 8.6 101
Parker Peak 9400 17.5 13.5 130 15.9 11.8 135
Sylvan Lake 8420 14.1 13.5 104 15.6 15.3 102
Thumb Divide 7980 9.9 9.7 102 10.2 12.6 81
Two Ocean Plateau 9240 19.5 18.5 105 15.2 17.9 85
White Mill 8700 17.4 15.2 114 14.2 16.0 89
Wolverine 7650 9.4 7.2 131 9.2 8.5 108
Younts Peak 8350 11.3 10.1 112 9.5 10.8 88
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Basin Index (%) 112 100
WIND RIVER
Burroughs Creek 8750 8.0 -M * 9.4 -M *
Castle Creek 8400 3.6 -M * 4.3 -M *
Cold Springs 9630 5.4 4.8 112 5.1 6.4 80
Deer Park 9700 8.6 9.5 91 7.8 12.8 61
Hobbs Park 10100 8.7 8.0 109 7.5 8.1 93
Kirwin 9550 7.8 6.0 130 6.5 7.5 87
Little Warm 9370 7.7 6.6 117 6.3 8.5 74
Owl Creek 8975 4.1 3.1 132 4.4 3.7 119
South Pass 9040 7.8 9.7 80 6.8 11.3 60
St. Lawrence Alt 8620 4.1 4.2 98 5.0 5.5 91
Togwotee Pass 9580 17.7 15.5 114 16.7 16.4 102
Townsend Creek 8700 6.4 5.5 116 6.3 7.3 86
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Basin Index (%) 107 83
BIGHORN BASIN
Bald Mtn. 9380 14.7 11.2 131 11.4 11.1 103
Bear Trap Meadow 8200 6.4 3.6 178 6.8 5.3 128
Bone Springs Div 9350 12.0 9.9 121 9.9 10.0 99
Grave Springs 8550 7.6 5.1 149 8.0 6.7 119
Kirwin 9550 7.8 6.0 130 6.5 7.5 87
Marquette 8760 4.7 -M * 6.0 -M *
Middle Powder 7760 8.5 6.6 129 9.0 7.7 117
Owl Creek 8975 4.1 3.1 132 4.4 3.7 119
Powder River Pass 9480 9.0 6.9 130 8.8 8.1 109
Shell Creek 9580 10.5 9.4 112 10.2 9.2 111
Timber Creek 7950 4.4 3.1 142 5.0 4.6 109
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Basin Index (%) 131 108
SHOSHONE RIVER
Blackwater 9780 14.8 15.0 99 14.7 13.7 107
Evening Star 9200 18.7 16.7 112 20.4 18.6 110
Marquette 8760 4.7 -M * 6.0 -M *
Sylvan Lake 8420 14.1 13.5 104 15.6 15.3 102
Sylvan Road 7120 8.4 8.0 105 11.2 12.3 91
Younts Peak 8350 11.3 10.1 112 9.5 10.8 88
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Basin Index (%) 106 101
POWDER RIVER
Bear Trap Meadow 8200 6.4 3.6 178 6.8 5.3 128
Cloud Peak Reservoir 9860 9.3 8.7 107 8.9 8.2 109
Grave Springs 8550 7.6 5.1 149 8.0 6.7 119
Hansen Sawmill 8360 5.0 4.0 125 6.1 5.2 117
Middle Powder 7760 8.5 6.6 129 9.0 7.7 117
Powder River Pass 9480 9.0 6.9 130 8.8 8.1 109
Soldier Park 8720 3.5 -M * 6.1 -M *
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Basin Index (%) 131 116
TONGUE RIVER
Big Goose 7990 5.7 5.1 112 6.7 6.8 99
Bone Springs Div 9350 12.0 9.9 121 9.9 10.0 99
Burgess Junction 7880 7.2 7.0 103 8.3 7.8 106
Dome Lake 8880 8.3 7.2 115 7.1 8.7 82
Little Goose 8870 6.9 -M * 5.7 -M *
Sucker Creek 8880 9.3 7.4 126 8.0 9.0 89
Tie Creek 6870 5.5 3.5 157 9.0 7.3 123
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Basin Index (%) 120 99
BELLE FOURCHE
Blind Park 6890 5.7 5.1 112 6.4 8.1 79
Cole Canyon 5910 2.7 3.6 75 8.4 6.0 140
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Basin Index (%) 97 105
CHEYENNE RIVER BASIN
Blind Park 6890 5.7 5.1 112 6.4 8.1 79
North Rapid Creek 6130 5.3 4.6 115 6.4 6.5 98
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Basin Index (%) 113 88
UPPER N. PLATTE
Arapaho Ridge 10960 14.5 13.8 105 14.1 14.8 95
Blackhall Mtn 9820 19.6 -M * 19.5 -M *
Columbine 9160 19.1 15.5 123 17.7 16.9 105
Divide Peak 8880 15.2 13.1 116 15.8 14.2 111
Joe Wright 10120 12.4 13.3 93 17.0 16.6 102
Laprele Creek 8375 8.6 5.7 151 8.7 7.8 112
Med Bow 10500 29.8 -M * 24.5 -M *
Never Summer 10280 12.8 13.0 98 9.3 -M *
North French Creek 10130 23.2 16.7 139 22.5 17.4 129
Old Battle 10000 21.8 20.1 108 19.8 23.3 85
Rawah 9020 -M 6.6 * -M 9.4 *
Sage Creek Basin 7850 11.9 8.9 134 9.7 10.3 94
Sand Lake 10050 19.7 17.2 115 18.3 15.7 117
South Brush Creek 8440 9.4 7.6 124 9.4 9.9 95
Tower 10500 29.8 29.1 102 26.6 26.5 100
Webber Springs 9250 15.0 14.9 101 16.4 17.6 93
Whiskey Park 8950 22.7 17.0 134 22.4 18.6 120
Willow Creek Pass 9540 8.2 8.0 102 7.6 8.6 88
Zirkel 9340 19.2 19.3 99 21.7 19.8 110
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Basin Index (%) 113 104
SWEETWATER
Deer Park 9700 8.6 9.5 91 7.8 12.8 61
Larsen Creek 9000 3.2 7.8 41 5.4 -M *
South Pass 9040 7.8 9.7 80 6.8 11.3 60
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Basin Index (%) 73 61
LOWER N. PLATTE
Casper Mtn. 7900 11.8 8.0 148 7.7 9.4 82
Laprele Creek 8375 8.6 5.7 151 8.7 7.8 112
Reno Hill 8400 11.3 8.1 140 11.3 9.3 122
Windy Peak 7900 6.7 4.4 152 5.7 6.6 86
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Basin Index (%) 147 101
LARAMIE RIVER
Brooklyn Lake 10240 18.3 12.3 149 17.6 13.4 131
Cinnabar Park 9574 16.3 13.8 118 18.0 16.8 107
Crow Creek 8330 6.4 5.7 112 8.1 6.6 123
Deadman Hill 10220 12.2 10.6 115 10.6 10.6 100
Rawah 9020 -M 6.6 * -M 9.4 *
Roach 9700 9.9 10.5 94 9.6 12.3 78
Windy Peak 7900 6.7 4.4 152 5.7 6.6 86
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Basin Index (%) 122 105
S. PLATTE
Black Mountain 8920 7.2 -M * 8.8 -M *
Crow Creek 8330 6.4 5.7 112 8.1 6.6 123
Deadman Hill 10220 12.2 10.6 115 10.6 10.6 100
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Basin Index (%) 114 109
LITTLE SNAKE RIVER
Battle Mountain 7440 10.8 7.4 146 10.6 10.0 106
Divide Peak 8880 15.2 13.1 116 15.8 14.2 111
Elk River 8700 14.6 12.1 121 11.7 13.3 88
Little Snake River 8915 19.4 16.5 118 23.7 21.7 109
Old Battle 10000 21.8 20.1 108 19.8 23.3 85
Sage Creek Basin 7850 11.9 8.9 134 9.7 10.3 94
Sandstone RS 8150 12.3 8.5 145 11.3 12.4 91
Whiskey Park 8950 22.7 17.0 134 22.4 18.6 120
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Basin Index (%) 124 101
UPPER GREEN RIVER
Big Sandy Opening 9080 6.6 8.6 77 5.6 8.6 65
Blind Bull Sum 8650 17.4 14.7 118 10.5 13.3 79
East Rim Divide 7930 8.6 6.9 125 6.8 8.0 85
Elkhart Park G.S. 9400 7.6 7.8 97 7.3 8.8 83
Gros Ventre Summit 8750 7.5 8.6 87 7.3 8.5 86
Gunsight Pass 9820 8.8 8.6 102 8.9 9.2 97
Indian Creek 9425 16.1 15.1 107 11.9 14.6 82
Kendall R.S. 7740 7.5 8.0 94 7.6 9.6 79
Loomis Park 8240 9.9 9.9 100 12.3 11.7 105
New Fork Lake 8340 7.7 6.9 112 5.9 7.3 81
Pocket Creek 9360 -M -M * 5.3 -M *
Snider Basin 8060 9.7 8.1 120 10.0 9.6 104
Spring Creek Divide 9000 17.8 15.3 116 17.2 16.0 108
Triple Peak 8500 17.7 13.8 128 17.7 16.6 107
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Basin Index (%) 108 91
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.8 -M * 8.8 -M *
Buck Pasture 9632 13.4 -M * 13.0 -M *
EF Blacks Fork GS 9360 10.8 -M * 7.2 -M *
Hams Fork 7840 8.9 7.6 117 8.1 7.6 107
Hewinta 9500 7.9 6.2 127 10.8 9.0 120
Hickerson Park 9122 8.1 4.0 202 8.5 6.4 133
Hole-in-Rock 9168 8.1 4.2 193 8.2 5.9 139
Indian Creek 9425 16.1 15.1 107 11.9 14.6 82
Kelley R.S. 8180 11.6 9.4 123 12.1 12.0 101
Spirit Lk 10235 12.6 -M * 13.4 -M *
Steel Creek Park 10158 10.0 9.1 110 13.1 10.3 127
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Basin Index (%) 127 110
UPPER BEAR RIVER
Bear River RS 8777 6.7 -M * 7.9 -M *
Bug Lake 7987 14.4 11.8 122 13.3 12.9 103
Burts Miller Ranch 8000 5.3 -M * 5.3 -M *
Chalk Creek #1 9171 14.4 13.8 104 12.9 16.3 79
Hayden Fork 9130 11.5 9.1 126 14.7 13.6 108
Kelley R.S. 8180 11.6 9.4 123 12.1 12.0 101
Lily Lake 9133 8.3 7.6 109 8.7 11.1 78
Monte Cristo 8932 19.9 16.6 120 17.4 16.9 103
Salt River Summit 7640 10.8 8.3 130 11.2 11.0 102
Spring Creek Divide 9000 17.8 15.3 116 17.2 16.0 108
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Basin Index (%) 118 98
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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.
