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 TUESDAY: FEBRUARY 11 , 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 12.0 11.7 103 12.4 15.0 83
Black Bear 8170 24.6 26.0 95 23.2 26.6 87
Blind Bull Sum 8650 18.6 15.3 122 11.3 13.8 82
Cottonwood Creek 7670 20.9 13.9 150 21.8 17.0 128
East Rim Divide 7930 9.1 7.1 128 7.3 8.2 89
Grand Targhee 9260 30.1 25.2 119 20.9 22.2 94
Granite Creek 6770 11.7 11.7 100 -M 14.6 *
Grassy Lake 7265 23.3 22.5 104 23.4 25.7 91
Gros Ventre Summit 8750 7.9 8.8 90 7.8 8.8 89
Gunsight Pass 9820 9.4 8.8 107 9.4 9.6 98
Lewis Lake Divide 7850 18.0 22.1 81 21.4 24.9 86
Phillips Bench 8200 20.8 17.1 122 20.2 19.6 103
Salt River Summit 7640 11.4 8.6 133 11.7 11.5 102
Snake River Station 6920 12.3 12.4 99 14.4 16.6 87
Spring Creek Divide 9000 19.7 15.9 124 19.0 16.6 114
Thumb Divide 7980 10.4 10.1 103 10.5 12.9 81
Togwotee Pass 9580 18.9 15.9 119 17.9 17.0 105
Two Ocean Plateau 9240 20.8 19.0 109 16.1 18.6 87
Willow Creek 8080 26.2 18.3 143 26.5 23.1 115
Younts Peak 8350 11.9 10.3 116 9.7 11.2 87
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Basin Index (%) 112 96
MADISON-GALLATIN
Black Bear 8170 24.6 26.0 95 23.2 26.6 87
Canyon 7870 9.8 8.8 111 10.1 11.6 87
Madison Plateau 7750 15.4 15.2 101 11.8 18.5 64
West Yellowstone 6700 8.3 7.4 112 7.1 10.4 68
Whiskey Creek 6800 11.0 10.1 109 12.4 14.1 88
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Basin Index (%) 102 80
YELLOWSTONE
Beartooth Lake 9360 15.9 14.9 107 14.5 13.8 105
Burnt Mtn 5880 4.3 3.0 143 8.5 8.4 101
Canyon 7870 9.8 8.8 111 10.1 11.6 87
Cole Creek 7850 12.3 8.8 140 9.4 8.1 116
Evening Star 9200 19.5 16.8 116 21.2 19.4 109
Fisher Creek 9100 22.3 22.1 101 22.8 22.3 102
Northeast Entrance 7350 8.0 7.0 114 9.0 8.9 101
Parker Peak 9400 18.4 13.7 134 16.7 12.2 137
Sylvan Lake 8420 15.1 13.5 112 16.5 15.8 104
Thumb Divide 7980 10.4 10.1 103 10.5 12.9 81
Two Ocean Plateau 9240 20.8 19.0 109 16.1 18.6 87
White Mill 8700 18.2 15.7 116 14.9 16.6 90
Wolverine 7650 9.9 7.5 132 9.6 8.7 110
Younts Peak 8350 11.9 10.3 116 9.7 11.2 87
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Basin Index (%) 115 101
WIND RIVER
Burroughs Creek 8750 8.4 -M * 9.3 -M *
Castle Creek 8400 3.7 -M * 4.4 -M *
Cold Springs 9630 5.5 4.9 112 5.1 6.6 77
Deer Park 9700 9.0 9.5 95 7.7 13.4 57
Hobbs Park 10100 8.9 8.2 109 7.5 8.3 90
Kirwin 9550 8.3 6.1 136 6.9 7.7 90
Little Warm 9370 7.8 6.8 115 5.7 8.7 66
Owl Creek 8975 4.5 3.2 141 4.7 3.8 124
South Pass 9040 8.0 9.8 82 7.0 11.7 60
St. Lawrence Alt 8620 3.9 4.3 91 5.2 5.7 91
Togwotee Pass 9580 18.9 15.9 119 17.9 17.0 105
Townsend Creek 8700 6.6 5.7 116 6.5 7.6 86
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Basin Index (%) 109 82
BIGHORN BASIN
Bald Mtn. 9380 15.9 11.9 134 11.9 11.5 103
Bear Trap Meadow 8200 6.9 3.7 186 7.1 5.4 131
Bone Springs Div 9350 12.6 10.2 124 10.4 10.2 102
Grave Springs 8550 8.0 5.3 151 8.6 7.0 123
Kirwin 9550 8.3 6.1 136 6.9 7.7 90
Marquette 8760 5.0 -M * 6.3 -M *
Middle Powder 7760 9.3 6.8 137 9.6 7.9 122
Owl Creek 8975 4.5 3.2 141 4.7 3.8 124
Powder River Pass 9480 9.4 6.9 136 9.1 8.4 108
Shell Creek 9580 10.7 9.7 110 10.4 9.4 111
Timber Creek 7950 4.7 3.1 152 5.2 4.8 108
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Basin Index (%) 135 110
SHOSHONE RIVER
Blackwater 9780 15.6 15.2 103 15.6 14.1 111
Evening Star 9200 19.5 16.8 116 21.2 19.4 109
Marquette 8760 5.0 -M * 6.3 -M *
Sylvan Lake 8420 15.1 13.5 112 16.5 15.8 104
Sylvan Road 7120 9.1 8.3 110 12.6 12.6 100
Younts Peak 8350 11.9 10.3 116 9.7 11.2 87
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Basin Index (%) 111 103
POWDER RIVER
Bear Trap Meadow 8200 6.9 3.7 186 7.1 5.4 131
Cloud Peak Reservoir 9860 9.6 9.1 105 8.9 8.4 106
Grave Springs 8550 8.0 5.3 151 8.6 7.0 123
Hansen Sawmill 8360 5.1 4.2 121 6.2 5.4 115
Middle Powder 7760 9.3 6.8 137 9.6 7.9 122
Powder River Pass 9480 9.4 6.9 136 9.1 8.4 108
Soldier Park 8720 3.4 -M * 6.0 -M *
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Basin Index (%) 134 116
TONGUE RIVER
Big Goose 7990 5.9 5.4 109 7.1 7.0 101
Bone Springs Div 9350 12.6 10.2 124 10.4 10.2 102
Burgess Junction 7880 8.0 7.2 111 8.9 8.0 111
Dome Lake 8880 8.4 7.4 114 6.7 8.9 75
Little Goose 8870 7.2 -M * 5.8 -M *
Sucker Creek 8880 10.0 7.6 132 8.6 9.3 92
Tie Creek 6870 6.2 3.7 168 9.6 7.5 128
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Basin Index (%) 123 101
BELLE FOURCHE
Blind Park 6890 6.0 5.4 111 6.5 8.3 78
Cole Canyon 5910 2.6 4.1 63 -M 6.3 *
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Basin Index (%) 91 78
CHEYENNE RIVER BASIN
Blind Park 6890 6.0 5.4 111 6.5 8.3 78
North Rapid Creek 6130 5.5 5.0 110 6.6 6.8 97
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Basin Index (%) 111 87
UPPER N. PLATTE
Arapaho Ridge 10960 16.3 14.2 115 15.8 15.2 104
Blackhall Mtn 9820 20.9 -M * 20.6 -M *
Columbine 9160 22.5 16.3 138 -M 17.7 *
Divide Peak 8880 15.8 13.6 116 16.8 14.7 114
Joe Wright 10120 14.7 13.6 108 19.2 17.2 112
Laprele Creek 8375 8.8 6.0 147 9.0 8.1 111
Med Bow 10500 32.0 -M * 26.2 -M *
Never Summer 10280 14.6 13.3 110 10.6 -M *
North French Creek 10130 25.0 17.6 142 24.2 18.1 134
Old Battle 10000 23.1 21.0 110 20.7 24.1 86
Rawah 9020 9.8 7.0 140 11.2 9.5 118
Sage Creek Basin 7850 12.3 9.1 135 10.0 10.5 95
Sand Lake 10050 21.0 17.7 119 19.4 16.2 120
South Brush Creek 8440 10.2 7.7 132 10.2 10.1 101
Tower 10500 32.9 30.7 107 28.8 27.5 105
Webber Springs 9250 15.9 15.6 102 17.2 18.2 95
Whiskey Park 8950 24.4 17.6 139 23.9 19.3 124
Willow Creek Pass 9540 9.8 8.1 121 9.1 8.9 102
Zirkel 9340 21.1 19.7 107 -M 20.4 *
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Basin Index (%) 120 108
SWEETWATER
Deer Park 9700 9.0 9.5 95 7.7 13.4 57
Larsen Creek 9000 -M 8.1 * 5.5 -M *
South Pass 9040 8.0 9.8 82 7.0 11.7 60
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Basin Index (%) 88 59
LOWER N. PLATTE
Casper Mtn. 7900 12.3 8.2 150 8.3 9.7 86
Laprele Creek 8375 8.8 6.0 147 9.0 8.1 111
Reno Hill 8400 11.8 8.3 142 11.9 9.6 124
Windy Peak 7900 6.9 4.6 150 5.7 6.8 84
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Basin Index (%) 147 102
LARAMIE RIVER
Brooklyn Lake 10240 19.6 12.9 152 19.2 13.8 139
Cinnabar Park 9574 17.8 14.4 124 19.3 17.1 113
Crow Creek 8330 6.6 5.8 114 8.3 6.7 124
Deadman Hill 10220 13.4 10.9 123 11.7 11.0 106
Rawah 9020 9.8 7.0 140 11.2 9.5 118
Roach 9700 10.9 10.8 101 10.5 12.7 83
Windy Peak 7900 6.9 4.6 150 5.7 6.8 84
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Basin Index (%) 128 111
S. PLATTE
Black Mountain 8920 8.1 -M * 9.8 -M *
Crow Creek 8330 6.6 5.8 114 8.3 6.7 124
Deadman Hill 10220 13.4 10.9 123 11.7 11.0 106
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Basin Index (%) 120 113
LITTLE SNAKE RIVER
Battle Mountain 7440 11.0 7.8 141 11.1 10.4 107
Divide Peak 8880 15.8 13.6 116 16.8 14.7 114
Elk River 8700 15.9 12.7 125 13.2 13.8 96
Little Snake River 8915 20.6 17.2 120 24.7 22.2 111
Old Battle 10000 23.1 21.0 110 20.7 24.1 86
Sage Creek Basin 7850 12.3 9.1 135 10.0 10.5 95
Sandstone RS 8150 12.8 9.1 141 12.1 12.9 94
Whiskey Park 8950 24.4 17.6 139 23.9 19.3 124
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Basin Index (%) 126 104
UPPER GREEN RIVER
Big Sandy Opening 9080 6.9 8.7 79 5.9 8.9 66
Blind Bull Sum 8650 18.6 15.3 122 11.3 13.8 82
East Rim Divide 7930 9.1 7.1 128 7.3 8.2 89
Elkhart Park G.S. 9400 8.0 8.0 100 7.6 9.1 84
Gros Ventre Summit 8750 7.9 8.8 90 7.8 8.8 89
Gunsight Pass 9820 9.4 8.8 107 9.4 9.6 98
Indian Creek 9425 17.0 15.8 108 12.2 15.2 80
Kendall R.S. 7740 7.6 8.4 90 7.6 9.9 77
Loomis Park 8240 10.8 10.3 105 13.2 12.1 109
New Fork Lake 8340 8.2 7.2 114 -M 7.6 *
Pocket Creek 9360 -M -M * 5.6 -M *
Snider Basin 8060 10.4 8.5 122 10.7 9.9 108
Spring Creek Divide 9000 19.7 15.9 124 19.0 16.6 114
Triple Peak 8500 20.0 14.7 136 19.7 17.2 115
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Basin Index (%) 112 95
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.8 -M * 9.1 -M *
Buck Pasture 9632 13.6 -M * 13.6 -M *
EF Blacks Fork GS 9360 11.2 -M * -M -M *
Hams Fork 7840 9.7 7.9 123 8.7 7.8 112
Hewinta 9500 8.3 6.5 128 10.6 9.3 114
Hickerson Park 9122 8.2 4.4 186 8.8 6.6 133
Hole-in-Rock 9168 8.1 4.4 184 8.1 6.2 131
Indian Creek 9425 17.0 15.8 108 12.2 15.2 80
Kelley R.S. 8180 11.6 9.7 120 12.2 12.4 98
Spirit Lk 10235 12.7 -M * 13.5 -M *
Steel Creek Park 10158 -M 9.6 * 13.6 10.7 127
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Basin Index (%) 129 109
UPPER BEAR RIVER
Bear River RS 8777 6.8 -M * 8.0 -M *
Bug Lake 7987 15.1 12.4 122 13.9 13.3 105
Burts Miller Ranch 8000 5.3 -M * 5.2 -M *
Chalk Creek #1 9171 14.8 14.9 99 13.8 16.8 82
Hayden Fork 9130 12.2 9.7 126 15.2 14.1 108
Kelley R.S. 8180 11.6 9.7 120 12.2 12.4 98
Lily Lake 9133 8.6 8.2 105 9.1 11.5 79
Monte Cristo 8932 21.1 17.6 120 18.9 17.5 108
Salt River Summit 7640 11.4 8.6 133 11.7 11.5 102
Spring Creek Divide 9000 19.7 15.9 124 19.0 16.6 114
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Basin Index (%) 118 100
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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.
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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.