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: FEBRUARY 8 , 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 11.6 11.2 104 12.1 14.6 83
Black Bear 8170 24.4 24.7 99 23.3 26.0 90
Blind Bull Sum 8650 18.6 14.9 125 11.2 13.5 83
Cottonwood Creek 7670 20.4 13.6 150 21.6 16.6 130
East Rim Divide 7930 8.9 7.0 127 7.2 8.1 89
Grand Targhee 9260 29.6 24.6 120 20.6 21.6 95
Granite Creek 6770 11.7 11.3 104 11.5 14.3 80
Grassy Lake 7265 22.9 21.7 106 22.9 25.1 91
Gros Ventre Summit 8750 7.9 8.7 91 7.8 8.6 91
Gunsight Pass 9820 9.2 8.7 106 9.4 9.4 100
Lewis Lake Divide 7850 17.9 21.2 84 21.2 24.2 88
Phillips Bench 8200 20.2 16.5 122 19.7 19.1 103
Salt River Summit 7640 11.2 8.3 135 11.7 11.2 104
Snake River Station 6920 12.2 11.9 103 14.4 16.2 89
Spring Creek Divide 9000 19.8 15.4 129 19.0 16.1 118
Thumb Divide 7980 10.2 9.8 104 10.3 12.7 81
Togwotee Pass 9580 18.3 15.6 117 17.3 16.6 104
Two Ocean Plateau 9240 19.9 18.7 106 15.6 18.2 86
Willow Creek 8080 25.8 18.1 143 26.3 22.5 117
Younts Peak 8350 11.7 10.1 116 9.7 10.9 89
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Basin Index (%) 114 96
MADISON-GALLATIN
Black Bear 8170 24.4 24.7 99 23.3 26.0 90
Canyon 7870 9.6 8.6 112 10.0 11.3 88
Madison Plateau 7750 15.3 14.8 103 12.5 18.1 69
West Yellowstone 6700 8.2 7.2 114 7.0 10.2 69
Whiskey Creek 6800 11.0 9.9 111 12.6 13.9 91
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Basin Index (%) 105 82
YELLOWSTONE
Beartooth Lake 9360 15.6 14.5 108 14.3 13.4 107
Burnt Mtn 5880 3.7 2.7 137 8.5 8.3 102
Canyon 7870 9.6 8.6 112 10.0 11.3 88
Cole Creek 7850 11.5 8.7 132 8.9 7.9 113
Evening Star 9200 19.0 16.7 114 20.7 18.8 110
Fisher Creek 9100 21.6 21.6 100 22.3 21.8 102
Northeast Entrance 7350 7.8 6.7 116 8.9 8.6 103
Parker Peak 9400 17.9 13.5 133 16.2 11.9 136
Sylvan Lake 8420 14.3 13.5 106 16.1 15.5 104
Thumb Divide 7980 10.2 9.8 104 10.3 12.7 81
Two Ocean Plateau 9240 19.9 18.7 106 15.6 18.2 86
White Mill 8700 17.7 15.3 116 14.5 16.2 90
Wolverine 7650 9.6 7.3 132 9.4 8.5 111
Younts Peak 8350 11.7 10.1 116 9.7 10.9 89
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Basin Index (%) 113 101
WIND RIVER
Burroughs Creek 8750 8.2 -M * 9.7 -M *
Castle Creek 8400 3.6 -M * 4.4 -M *
Cold Springs 9630 5.5 4.8 115 5.3 6.5 82
Deer Park 9700 8.7 9.5 92 7.6 13.0 58
Hobbs Park 10100 8.8 8.0 110 7.6 8.1 94
Kirwin 9550 8.0 6.1 131 6.6 7.5 88
Little Warm 9370 7.9 6.6 120 6.7 8.5 79
Owl Creek 8975 4.1 3.1 132 4.5 3.7 122
South Pass 9040 7.8 9.7 80 6.9 11.5 60
St. Lawrence Alt 8620 4.0 4.2 95 5.0 5.6 89
Togwotee Pass 9580 18.3 15.6 117 17.3 16.6 104
Townsend Creek 8700 6.4 5.6 114 6.3 7.4 85
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Basin Index (%) 109 83
BIGHORN BASIN
Bald Mtn. 9380 15.1 11.3 134 11.9 11.1 107
Bear Trap Meadow 8200 6.6 3.6 183 6.9 5.3 130
Bone Springs Div 9350 12.2 10.0 122 10.2 10.0 102
Grave Springs 8550 7.7 5.1 151 -M 6.8 *
Kirwin 9550 8.0 6.1 131 6.6 7.5 88
Marquette 8760 4.9 -M * 6.2 -M *
Middle Powder 7760 8.8 6.7 131 9.3 7.7 121
Owl Creek 8975 4.1 3.1 132 4.5 3.7 122
Powder River Pass 9480 9.2 6.9 133 9.0 8.2 110
Shell Creek 9580 10.7 9.5 113 10.4 9.2 113
Timber Creek 7950 4.4 3.1 142 5.0 4.6 109
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Basin Index (%) 133 110
SHOSHONE RIVER
Blackwater 9780 15.1 15.0 101 14.9 13.8 108
Evening Star 9200 19.0 16.7 114 20.7 18.8 110
Marquette 8760 4.9 -M * 6.2 -M *
Sylvan Lake 8420 14.3 13.5 106 16.1 15.5 104
Sylvan Road 7120 8.6 8.0 108 -M 12.4 *
Younts Peak 8350 11.7 10.1 116 9.7 10.9 89
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Basin Index (%) 109 104
POWDER RIVER
Bear Trap Meadow 8200 6.6 3.6 183 6.9 5.3 130
Cloud Peak Reservoir 9860 9.4 8.8 107 8.8 8.2 107
Grave Springs 8550 7.7 5.1 151 -M 6.8 *
Hansen Sawmill 8360 5.1 4.1 124 6.2 5.3 117
Middle Powder 7760 8.8 6.7 131 9.3 7.7 121
Powder River Pass 9480 9.2 6.9 133 9.0 8.2 110
Soldier Park 8720 3.6 -M * 6.2 -M *
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Basin Index (%) 133 116
TONGUE RIVER
Big Goose 7990 5.9 5.1 116 7.0 6.8 103
Bone Springs Div 9350 12.2 10.0 122 10.2 10.0 102
Burgess Junction 7880 7.3 7.0 104 8.5 7.8 109
Dome Lake 8880 8.4 7.2 117 6.7 8.7 77
Little Goose 8870 7.0 -M * 5.8 -M *
Sucker Creek 8880 9.5 7.4 128 8.3 9.1 91
Tie Creek 6870 5.7 3.6 158 9.1 7.4 123
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Basin Index (%) 122 100
BELLE FOURCHE
Blind Park 6890 5.8 5.2 112 6.3 8.1 78
Cole Canyon 5910 2.6 3.7 70 -M 6.1 *
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Basin Index (%) 94 78
CHEYENNE RIVER BASIN
Blind Park 6890 5.8 5.2 112 6.3 8.1 78
North Rapid Creek 6130 5.3 4.7 113 6.3 6.5 97
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Basin Index (%) 112 86
UPPER N. PLATTE
Arapaho Ridge 10960 15.9 13.9 114 15.5 15.0 103
Blackhall Mtn 9820 20.3 -M * 20.2 -M *
Columbine 9160 22.1 15.6 142 20.6 17.1 120
Divide Peak 8880 15.7 13.3 118 16.6 14.4 115
Joe Wright 10120 13.9 13.4 104 18.4 16.8 110
Laprele Creek 8375 8.6 5.8 148 8.8 7.9 111
Med Bow 10500 31.0 -M * 25.6 -M *
Never Summer 10280 13.8 13.1 105 10.2 -M *
North French Creek 10130 24.4 16.9 144 23.7 17.5 135
Old Battle 10000 22.8 20.4 112 20.6 23.5 88
Rawah 9020 -M 6.7 * -M 9.4 *
Sage Creek Basin 7850 12.3 8.9 138 10.0 10.3 97
Sand Lake 10050 20.7 17.3 120 19.3 15.8 122
South Brush Creek 8440 9.9 7.6 130 10.0 9.9 101
Tower 10500 32.0 29.5 108 28.9 26.7 108
Webber Springs 9250 15.7 15.0 105 17.1 17.8 96
Whiskey Park 8950 23.9 17.1 140 23.5 18.8 125
Willow Creek Pass 9540 9.2 8.0 115 8.7 8.6 101
Zirkel 9340 20.4 19.4 105 22.9 20.1 114
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Basin Index (%) 120 110
SWEETWATER
Deer Park 9700 8.7 9.5 92 7.6 13.0 58
Larsen Creek 9000 3.3 7.9 42 5.5 -M *
South Pass 9040 7.8 9.7 80 6.9 11.5 60
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Basin Index (%) 73 59
LOWER N. PLATTE
Casper Mtn. 7900 11.8 8.0 148 7.8 9.4 83
Laprele Creek 8375 8.6 5.8 148 8.8 7.9 111
Reno Hill 8400 11.4 8.2 139 11.6 9.4 123
Windy Peak 7900 6.8 4.4 155 5.7 6.6 86
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Basin Index (%) 146 102
LARAMIE RIVER
Brooklyn Lake 10240 19.1 12.4 154 18.5 13.5 137
Cinnabar Park 9574 17.2 13.8 125 18.8 16.9 111
Crow Creek 8330 6.6 5.7 116 8.4 6.6 127
Deadman Hill 10220 12.7 10.6 120 11.1 10.7 104
Rawah 9020 -M 6.7 * -M 9.4 *
Roach 9700 10.4 10.6 98 10.0 12.4 81
Windy Peak 7900 6.8 4.4 155 5.7 6.6 86
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Basin Index (%) 127 109
S. PLATTE
Black Mountain 8920 7.7 -M * 9.3 -M *
Crow Creek 8330 6.6 5.7 116 8.4 6.6 127
Deadman Hill 10220 12.7 10.6 120 11.1 10.7 104
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Basin Index (%) 118 113
LITTLE SNAKE RIVER
Battle Mountain 7440 11.4 7.5 152 11.3 10.1 112
Divide Peak 8880 15.7 13.3 118 16.6 14.4 115
Elk River 8700 15.8 12.2 130 12.9 13.4 96
Little Snake River 8915 20.3 16.6 122 24.6 21.8 113
Old Battle 10000 22.8 20.4 112 20.6 23.5 88
Sage Creek Basin 7850 12.3 8.9 138 10.0 10.3 97
Sandstone RS 8150 13.0 8.6 151 12.0 12.5 96
Whiskey Park 8950 23.9 17.1 140 23.5 18.8 125
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Basin Index (%) 129 105
UPPER GREEN RIVER
Big Sandy Opening 9080 6.9 8.6 80 5.8 8.7 67
Blind Bull Sum 8650 18.6 14.9 125 11.2 13.5 83
East Rim Divide 7930 8.9 7.0 127 7.2 8.1 89
Elkhart Park G.S. 9400 7.9 7.8 101 7.5 8.9 84
Gros Ventre Summit 8750 7.9 8.7 91 7.8 8.6 91
Gunsight Pass 9820 9.2 8.7 106 9.4 9.4 100
Indian Creek 9425 17.1 15.2 112 12.3 14.8 83
Kendall R.S. 7740 7.6 8.1 94 7.7 9.7 79
Loomis Park 8240 10.4 10.0 104 12.9 11.8 109
New Fork Lake 8340 8.1 7.0 116 6.2 7.4 84
Pocket Creek 9360 -M -M * 5.6 -M *
Snider Basin 8060 10.7 8.2 130 11.0 9.7 113
Spring Creek Divide 9000 19.8 15.4 129 19.0 16.1 118
Triple Peak 8500 19.7 14.0 141 19.7 16.8 117
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Basin Index (%) 114 96
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.9 -M * 9.0 -M *
Buck Pasture 9632 13.7 -M * 13.4 -M *
EF Blacks Fork GS 9360 11.0 -M * 7.4 -M *
Hams Fork 7840 9.8 7.6 129 8.7 7.6 114
Hewinta 9500 8.0 6.3 127 10.9 9.0 121
Hickerson Park 9122 8.0 4.1 195 8.5 6.4 133
Hole-in-Rock 9168 8.1 4.2 193 8.2 6.0 137
Indian Creek 9425 17.1 15.2 112 12.3 14.8 83
Kelley R.S. 8180 12.0 9.5 126 12.5 12.1 103
Spirit Lk 10235 12.6 -M * 13.4 -M *
Steel Creek Park 10158 10.5 9.2 114 13.4 10.4 129
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Basin Index (%) 131 112
UPPER BEAR RIVER
Bear River RS 8777 6.7 -M * 8.0 -M *
Bug Lake 7987 15.2 12.0 127 13.9 13.0 107
Burts Miller Ranch 8000 5.2 -M * 5.4 -M *
Chalk Creek #1 9171 14.9 14.1 106 13.7 16.4 84
Hayden Fork 9130 12.1 9.2 132 15.2 13.8 110
Kelley R.S. 8180 12.0 9.5 126 12.5 12.1 103
Lily Lake 9133 8.6 7.7 112 8.9 11.2 79
Monte Cristo 8932 21.1 16.8 126 18.8 17.1 110
Salt River Summit 7640 11.2 8.3 135 11.7 11.2 104
Spring Creek Divide 9000 19.8 15.4 129 19.0 16.1 118
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Basin Index (%) 124 103
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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.