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 THURSDAY: FEBRUARY 8 , 2018
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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 13.5 11.2 121 15.0 14.6 103
Black Bear 8170 28.8 24.7 117 27.6 26.0 106
Blind Bull Sum 8650 23.5 14.9 158 14.3 13.5 106
Cottonwood Creek 7670 15.2 13.6 112 17.2 16.6 104
East Rim Divide 7930 8.4 7.0 120 8.2 8.1 101
Grand Targhee 9260 35.0 24.6 142 22.4 21.6 104
Granite Creek 6770 12.4 11.3 110 15.1 14.3 106
Grassy Lake 7265 21.7 21.7 100 24.9 25.1 99
Gros Ventre Summit 8750 9.6 8.7 110 9.4 8.6 109
Gunsight Pass 9820 10.9 8.7 125 11.1 9.4 118
Lewis Lake Divide 7850 25.9 21.2 122 27.4 24.2 113
Phillips Bench 8200 16.7 16.5 101 17.6 19.1 92
Salt River Summit 7640 6.8 8.3 82 8.7 11.2 78
Snake River Station 6920 13.5 11.9 113 17.8 16.2 110
Spring Creek Divide 9000 18.1 15.4 118 17.4 16.1 108
Thumb Divide 7980 12.7 9.8 130 13.4 12.7 106
Togwotee Pass 9580 21.9 15.6 140 22.3 16.6 134
Two Ocean Plateau 9240 27.4 18.7 147 20.0 18.2 110
Willow Creek 8080 22.0 18.1 122 24.5 22.5 109
Younts Peak 8350 -M 10.1 * -M 10.9 *
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Basin Index (%) 122 106
MADISON-GALLATIN
Black Bear 8170 28.8 24.7 117 27.6 26.0 106
Canyon 7870 11.8 8.6 137 13.6 11.3 120
Madison Plateau 7750 17.7 14.8 120 18.3 18.1 101
West Yellowstone 6700 8.8 7.2 122 11.7 10.2 115
Whiskey Creek 6800 10.8 9.9 109 12.8 13.9 92
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Basin Index (%) 119 106
YELLOWSTONE
Beartooth Lake 9360 29.0 14.5 200 -M 13.4 *
Burnt Mtn 5880 4.4 2.7 163 10.0 8.3 120
Canyon 7870 11.8 8.6 137 13.6 11.3 120
Cole Creek 7850 10.1 8.7 116 6.5 7.9 82
Evening Star 9200 30.1 16.7 180 30.7 18.8 163
Fisher Creek 9100 38.3 21.6 177 32.0 21.8 147
Northeast Entrance 7350 9.9 6.7 148 13.5 8.6 157
Parker Peak 9400 24.1 13.5 179 20.8 11.9 175
Sylvan Lake 8420 17.2 13.5 127 19.3 15.5 125
Thumb Divide 7980 12.7 9.8 130 13.4 12.7 106
Two Ocean Plateau 9240 27.4 18.7 147 20.0 18.2 110
White Mill 8700 30.4 15.3 199 22.2 16.2 137
Wolverine 7650 -M 7.3 * -M 8.5 *
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Basin Index (%) 163 134
WIND RIVER
Burroughs Creek 8750 11.6 -M * 13.6 -M *
Castle Creek 8400 6.3 -M * 7.6 -M *
Cold Springs 9630 6.7 4.8 140 7.1 6.5 109
Deer Park 9700 7.8 9.5 82 9.9 13.0 76
Hobbs Park 10100 11.4 8.0 142 9.7 8.1 120
Kirwin 9550 14.2 6.1 233 12.9 7.5 172
Little Warm 9370 11.6 6.6 176 11.8 8.5 139
Owl Creek 8975 3.0 3.1 97 4.7 3.7 127
South Pass 9040 7.7 9.7 79 -M 11.5 *
St. Lawrence Alt 8620 2.6 4.2 62 6.1 5.6 109
Togwotee Pass 9580 21.9 15.6 140 22.3 16.6 134
Townsend Creek 8700 5.1 5.6 91 6.3 7.4 85
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Basin Index (%) 126 118
BIGHORN BASIN
Bald Mtn. 9380 15.1 11.3 134 10.3 11.1 93
Bear Trap Meadow 8200 6.7 3.6 186 7.4 5.3 140
Bone Springs Div 9350 13.3 10.0 133 9.9 10.0 99
Grave Springs 8550 4.7 5.1 92 3.7 6.8 54
Kirwin 9550 14.2 6.1 233 12.9 7.5 172
Marquette 8760 4.1 -M * 7.6 -M *
Middle Powder 7760 6.2 6.7 93 -M 7.7 *
Owl Creek 8975 3.0 3.1 97 4.7 3.7 127
Powder River Pass 9480 12.6 6.9 183 11.5 8.2 140
Shell Creek 9580 -M 9.5 * 11.9 9.2 129
Timber Creek 7950 2.5 3.1 81 -M 4.6 *
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Basin Index (%) 140 117
SHOSHONE RIVER
Blackwater 9780 25.2 15.0 168 23.0 13.8 167
Evening Star 9200 30.1 16.7 180 30.7 18.8 163
Marquette 8760 4.1 -M * 7.6 -M *
Sylvan Road 7120 11.1 8.0 139 16.0 12.4 129
Younts Peak 8350 -M 10.1 * -M 10.9 *
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Basin Index (%) 167 155
POWDER RIVER
Bear Trap Meadow 8200 6.7 3.6 186 7.4 5.3 140
Cloud Peak Reservoir 9860 11.2 8.8 127 10.0 8.2 122
Grave Springs 8550 4.7 5.1 92 3.7 6.8 54
Hansen Sawmill 8360 5.5 4.1 134 6.8 5.3 128
Middle Powder 7760 6.2 6.7 93 -M 7.7 *
Powder River Pass 9480 12.6 6.9 183 11.5 8.2 140
Soldier Park 8720 4.3 -M * 6.8 -M *
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Basin Index (%) 133 117
TONGUE RIVER
Big Goose 7990 5.1 5.1 100 5.5 6.8 81
Bone Springs Div 9350 13.3 10.0 133 9.9 10.0 99
Burgess Junction 7880 6.3 7.0 90 5.4 7.8 69
Dome Lake 8880 9.5 7.2 132 7.7 8.7 89
Little Goose 8870 6.2 -M * 8.2 -M *
Sucker Creek 8880 7.0 7.4 95 -M 9.1 *
Tie Creek 6870 2.8 3.6 78 6.0 7.4 81
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Basin Index (%) 109 85
BELLE FOURCHE
Cole Canyon 5910 4.7 3.7 127 6.3 6.1 103
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Basin Index (%) 127 103
CHEYENNE RIVER BASIN
Blind Park 6890 5.7 5.2 110 8.0 8.1 99
North Rapid Creek 6130 5.3 4.7 113 5.8 6.5 89
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Basin Index (%) 111 95
UPPER N. PLATTE
Arapaho Ridge 10960 13.4 13.9 96 13.3 15.0 89
Blackhall Mtn 9820 17.7 -M * 17.8 -M *
Columbine 9160 14.1 15.6 90 16.4 17.1 96
Divide Peak 8880 8.9 13.3 67 12.4 14.4 86
Joe Wright 10120 10.7 13.4 80 19.1 16.8 114
Laprele Creek 8375 4.6 5.8 79 5.9 7.9 75
Med Bow 10500 28.9 -M * 24.3 -M *
North French Creek 10130 18.9 16.9 112 19.1 17.5 109
Never Summer 10280 11.9 13.1 91 9.8 -M *
Old Battle 10000 16.7 20.4 82 16.4 23.5 70
Rawah 9020 6.9 6.7 103 10.2 9.4 109
Sage Creek Basin 7850 6.1 8.9 69 7.3 10.3 71
Sand Lake 10050 18.0 17.3 104 14.9 15.8 94
South Brush Creek 8440 6.6 7.6 87 8.2 9.9 83
Tower 10500 21.8 29.5 74 22.2 26.7 83
Webber Springs 9250 12.2 15.0 81 14.5 17.8 81
Willow Creek Pass 9540 8.7 8.0 109 9.5 8.6 110
Zirkel 9340 16.4 19.4 85 21.2 20.1 105
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Basin Index (%) 87 91
SWEETWATER
Deer Park 9700 7.8 9.5 82 9.9 13.0 76
Larsen Creek 9000 7.0 7.9 89 7.9 -M *
South Pass 9040 7.7 9.7 79 -M 11.5 *
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Basin Index (%) 83 76*
LOWER N. PLATTE
Casper Mtn. 7900 5.4 8.0 68 -M 9.4 *
Laprele Creek 8375 4.6 5.8 79 5.9 7.9 75
Reno Hill 8400 6.8 8.2 83 7.8 9.4 83
Windy Peak 7900 4.2 4.4 95 5.8 6.6 88
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Basin Index (%) 80 82
LARAMIE RIVER
Brooklyn Lake 10240 17.4 12.4 140 18.0 13.5 133
Cinnabar Park 9574 -M 13.8 * -M 16.9 *
Crow Creek 8330 2.1 5.7 37 7.7 6.6 117
Deadman Hill 10220 13.1 10.6 124 12.8 10.7 120
Rawah 9020 6.9 6.7 103 10.2 9.4 109
Roach 9700 9.6 10.6 91 12.3 12.4 99
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Basin Index (%) 107 116
S. PLATTE
Black Mountain 8920 6.1 -M * 8.8 -M *
Crow Creek 8330 2.1 5.7 37 7.7 6.6 117
Deadman Hill 10220 13.1 10.6 124 12.8 10.7 120
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Basin Index (%) 93 118
LITTLE SNAKE RIVER
Battle Mountain 7440 3.4 7.5 45 6.5 10.1 64
Divide Peak 8880 8.9 13.3 67 12.4 14.4 86
Elk River 8700 9.3 12.2 76 10.6 13.4 79
Little Snake River 8915 13.8 16.6 83 19.0 21.8 87
Old Battle 10000 16.7 20.4 82 16.4 23.5 70
Sage Creek Basin 7850 6.1 8.9 69 7.3 10.3 71
Sandstone RS 8150 5.6 8.6 65 5.5 12.5 44
Whiskey Park 8950 14.6 17.1 85 17.2 18.8 91
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Basin Index (%) 75 76
UPPER GREEN RIVER
Big Sandy Opening 9080 8.8 8.6 102 8.8 8.7 101
Blind Bull Sum 8650 23.5 14.9 158 14.3 13.5 106
East Rim Divide 7930 8.4 7.0 120 8.2 8.1 101
Elkhart Park G.S. 9400 8.6 7.8 110 8.1 8.9 91
Gros Ventre Summit 8750 9.6 8.7 110 9.4 8.6 109
Gunsight Pass 9820 10.9 8.7 125 11.1 9.4 118
Kendall R.S. 7740 10.0 8.1 123 10.8 9.7 111
Loomis Park 8240 11.5 10.0 115 12.4 11.8 105
New Fork Lake 8340 8.3 7.0 119 -M 7.4 *
Pocket Creek 9360 6.3 -M * 6.0 -M *
Snider Basin 8060 9.0 8.2 110 10.7 9.7 110
Spring Creek Divide 9000 18.1 15.4 118 17.4 16.1 108
Triple Peak 8500 20.1 14.0 144 22.0 16.8 131
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Basin Index (%) 124 110
LOWER GREEN RIVER
Blacks Fork Jct 8869 4.9 -M * 6.1 -M *
Buck Pasture 9632 7.6 -M * 8.3 -M *
EF Blacks Fork GS 9360 5.4 -M * 5.4 -M *
Hams Fork 7840 5.7 7.6 75 6.1 7.6 80
Hewinta 9500 5.3 6.3 84 7.5 9.0 83
Hickerson Park 9122 4.6 4.1 112 4.2 6.4 66
Hole-in-Rock 9168 4.0 4.2 95 4.5 6.0 75
Indian Creek 9425 14.0 15.2 92 10.4 14.8 70
Kelley R.S. 8180 8.5 9.5 89 9.6 12.1 79
Spirit Lk 10235 4.9 -M * 5.8 -M *
Steel Creek Park 10158 8.6 9.2 93 9.0 10.4 87
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Basin Index (%) 90 77
UPPER BEAR RIVER
Bear River RS 8777 5.7 -M * 7.2 -M *
Bug Lake 7987 9.9 12.0 82 10.6 13.0 82
Burts Miller Ranch 8000 3.9 -M * 4.6 -M *
Chalk Creek #1 9171 9.5 14.1 67 10.3 16.4 63
Hayden Fork 9130 8.1 9.2 88 10.2 13.8 74
Kelley R.S. 8180 8.5 9.5 89 9.6 12.1 79
Lily Lake 9133 7.0 7.7 91 7.4 11.2 66
Monte Cristo 8932 12.6 16.8 75 12.8 17.1 75
Salt River Summit 7640 6.8 8.3 82 8.7 11.2 78
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Basin Index (%) 80 73
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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.