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 SUNDAY: FEBRUARY 12 , 2017
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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 7030 21.6 12.0 180 29.2 15.1 193
Black Bear 8170 28.6 26.4 108 38.8 26.8 145
Blind Bull Sum 8650 32.8 15.4 213 -M 13.9 *
Cottonwood Creek 7670 21.1 14.1 150 27.8 17.1 163
East Rim Divide 7930 15.2 7.1 214 17.1 8.2 209
Grand Targhee 9260 32.5 25.4 128 30.4 22.5 135
Granite Creek 6770 23.3 11.8 197 26.1 14.7 178
Grassy Lake 7265 29.4 22.9 128 41.3 25.9 159
Gros Ventre Summit 8750 -M 8.8 * -M 8.8 *
Gunsight Pass 9820 15.5 9.0 172 18.4 9.7 190
Lewis Lake Divide 7850 28.8 22.4 129 39.5 25.0 158
Phillips Bench 8200 25.7 17.3 149 35.2 19.7 179
Salt River Summit 7760 16.9 8.8 192 22.1 11.5 192
Snake River Station 6920 17.5 12.5 140 28.5 16.7 171
Spring Creek Divide 9000 28.6 16.0 179 29.3 16.7 175
Thumb Divide 7980 16.8 10.2 165 20.8 13.0 160
Togwotee Pass 9580 24.6 16.0 154 28.4 17.1 166
Two Ocean Plateau 9240 -M 19.1 * -M 18.7 *
Willow Creek 8380 26.7 18.5 144 36.1 23.3 155
Younts Peak 8350 19.4 10.3 188 23.0 11.3 204
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Basin Index (%) 154 167
MADISON-GALLATIN
Black Bear 8170 28.6 26.4 108 38.8 26.8 145
Canyon 7870 13.7 8.9 154 20.2 11.6 174
Madison Plateau 7750 18.9 15.4 123 27.2 18.6 146
West Yellowstone 6700 9.9 7.4 134 18.0 10.4 173
Whiskey Creek 6800 11.7 10.3 114 20.0 14.2 141
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Basin Index (%) 121 152
YELLOWSTONE
Beartooth Lake 9360 23.5 15.0 157 19.4 13.9 140
Burnt Mtn 5880 5.0 3.1 161 10.1 8.4 120
Canyon 7870 13.7 8.9 154 20.2 11.6 174
Cole Creek 7850 7.5 8.8 85 5.6 8.2 68
Evening Star 9200 27.4 17.0 161 29.5 19.5 151
Fisher Creek 9100 29.2 22.3 131 33.5 22.4 150
Northeast Entrance 7350 9.3 7.1 131 15.0 8.9 169
Parker Peak 9400 23.5 13.8 170 22.7 12.3 185
Sylvan Lake 8420 18.1 13.6 133 29.0 15.9 182
Thumb Divide 7980 16.8 10.2 165 20.8 13.0 160
Two Ocean Plateau 9240 -M 19.1 * -M 18.7 *
White Mill 8700 22.5 15.9 142 24.5 16.7 147
Wolverine 7650 -M 7.6 * -M 8.8 *
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Basin Index (%) 145 153
WIND RIVER
Burroughs Creek 8750 18.2 -M * 20.4 -M *
Castle Creek 8400 10.0 -M * 11.9 -M *
Cold Springs 9630 9.1 4.9 186 11.4 6.6 173
Deer Park 9700 22.9 9.5 241 26.4 13.5 196
Hobbs Park 10100 16.1 8.2 196 15.3 8.3 184
Kirwin 9550 13.8 6.1 226 16.9 7.7 219
Little Warm 9370 11.2 6.9 162 16.8 8.7 193
Owl Creek 8975 5.6 3.2 175 7.1 3.8 187
South Pass 9040 21.4 9.9 216 19.9 11.7 170
St. Lawrence Alt 8620 5.0 4.4 114 9.3 5.7 163
Togwotee Pass 9580 24.6 16.0 154 28.4 17.1 166
Townsend Creek 8700 8.6 5.7 151 11.4 7.6 150
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Basin Index (%) 185 180
BIGHORN BASIN
Bald Mtn. 9380 13.9 12.1 115 12.0 11.5 104
Bear Trap Meadow 8200 3.7 3.7 100 5.0 5.5 91
Bone Springs Div 9350 11.7 10.4 112 11.4 10.3 111
Grave Springs 8550 4.1 5.3 77 4.8 7.0 69
Kirwin 9550 13.8 6.1 226 16.9 7.7 219
Marquette 8760 6.1 -M * 9.8 -M *
Middle Powder 7760 5.0 6.9 72 5.3 7.9 67
Owl Creek 8975 5.6 3.2 175 7.1 3.8 187
Powder River Pass 9480 4.9 7.0 70 7.6 8.4 90
Shell Creek 9580 11.3 9.8 115 8.8 9.5 93
Timber Creek 7950 4.4 3.1 142 5.8 4.8 121
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Basin Index (%) 116 111
SHOSHONE RIVER
Blackwater 9780 27.4 15.3 179 29.0 14.2 204
Evening Star 9200 27.4 17.0 161 29.5 19.5 151
Marquette 8760 6.1 -M * 9.8 -M *
Sylvan Road 7120 13.3 8.4 158 24.4 12.7 192
Younts Peak 8350 19.4 10.3 188 23.0 11.3 204
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Basin Index (%) 172 184
POWDER RIVER
Bear Trap Meadow 8200 3.7 3.7 100 5.0 5.5 91
Cloud Peak Reservoir 9860 8.7 9.2 95 10.1 8.5 119
Grave Springs 8550 4.1 5.3 77 4.8 7.0 69
Hansen Sawmill 8360 5.9 4.2 140 7.7 5.4 143
Middle Powder 7760 5.0 6.9 72 5.3 7.9 67
Powder River Pass 9480 4.9 7.0 70 7.6 8.4 90
Soldier Park 8720 9.1 -M * 7.6 -M *
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Basin Index (%) 89 95
TONGUE RIVER
Big Goose 7990 6.3 5.5 115 7.3 7.1 103
Bone Springs Div 9350 11.7 10.4 112 11.4 10.3 111
Burgess Junction 7880 6.9 7.2 96 7.8 8.0 98
Dome Lake 8880 8.0 7.5 107 9.3 8.9 104
Little Goose 8870 6.9 -M * 9.0 -M *
Sucker Creek 8880 7.7 7.7 100 7.6 9.4 81
Tie Creek 6870 4.3 3.7 116 7.8 7.6 103
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Basin Index (%) 107 100
BELLE FOURCHE
Cole Canyon 5910 3.4 4.1 83 4.6 6.4 72
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Basin Index (%) 83 72
CHEYENNE RIVER BASIN
Blind Park 6890 4.5 5.4 83 5.9 8.4 70
North Rapid Creek 6130 4.5 5.1 88 5.0 6.8 74
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Basin Index (%) 86 72
UPPER N. PLATTE
Arapaho Ridge 10960 21.4 14.3 150 21.9 15.4 142
Blackhall Mtn 9820 29.8 -M * 29.5 -M *
Columbine 9160 21.4 16.5 130 23.2 17.8 130
Divide Peak 8880 15.3 13.7 112 17.6 14.8 119
Joe Wright 10120 16.1 13.8 117 23.0 17.4 132
Laprele Creek 8375 9.1 6.1 149 8.4 8.1 104
Med Bow 10500 29.7 -M * 27.6 -M *
North French Creek 10130 19.1 18.0 106 20.4 18.2 112
Never Summer 10280 18.7 13.5 139 15.5 -M *
Old Battle 10000 29.7 21.2 140 31.3 24.4 128
Rawah 9020 10.8 7.1 152 13.6 9.6 142
Sage Creek Basin 7850 12.1 9.1 133 12.8 10.6 121
Sand Lake 10050 22.3 17.8 125 20.9 16.3 128
South Brush Creek 8440 8.2 7.8 105 9.3 10.2 91
Tower 10500 35.2 31.1 113 37.0 27.7 134
Webber Springs 9250 23.6 15.8 149 27.5 18.3 150
Willow Creek Pass 9540 15.0 8.2 183 15.9 9.0 177
Zirkel 9340 34.2 19.9 172 35.5 20.5 173
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Basin Index (%) 133 134
SWEETWATER
Deer Park 9700 22.9 9.5 241 26.4 13.5 196
Larsen Creek 9000 16.1 8.2 196 18.6 -M *
South Pass 9040 21.4 9.9 216 19.9 11.7 170
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Basin Index (%) 219 184
LOWER N. PLATTE
Casper Mtn. 7900 7.6 8.2 93 7.3 9.7 75
Laprele Creek 8375 9.1 6.1 149 8.4 8.1 104
Reno Hill 8400 8.5 8.4 101 8.8 9.7 91
Windy Peak 7900 7.2 4.6 157 7.6 6.8 112
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Basin Index (%) 119 94
LARAMIE RIVER
Brooklyn Lake 10240 19.3 13.1 147 17.4 13.9 125
Cinnabar Park 9574 14.9 14.7 101 17.6 17.3 102
Crow Creek 8330 3.8 5.9 64 6.1 6.8 90
Deadman Hill 10220 16.3 11.0 148 15.8 11.1 142
Rawah 9020 10.8 7.1 152 13.6 9.6 142
Roach 9700 14.0 10.9 128 16.6 12.8 130
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Basin Index (%) 126 122
S. PLATTE
Black Mountain 8920 7.6 -M * 8.8 -M *
Crow Creek 8330 3.8 5.9 64 6.1 6.8 90
Deadman Hill 10220 16.3 11.0 148 15.8 11.1 142
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Basin Index (%) 119 122
LITTLE SNAKE RIVER
Battle Mountain 7440 8.7 8.0 109 12.5 10.5 119
Divide Peak 8880 15.3 13.7 112 17.6 14.8 119
Elk River 8700 16.3 12.9 126 16.7 13.9 120
Little Snake River 8915 26.3 17.4 151 31.9 22.6 141
Old Battle 10000 29.7 21.2 140 31.3 24.4 128
Sage Creek Basin 7850 12.1 9.1 133 12.8 10.6 121
Sandstone RS 8150 11.1 9.2 121 12.8 13.0 98
Whiskey Park 8950 22.1 17.9 123 24.0 19.6 122
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Basin Index (%) 129 123
UPPER GREEN RIVER
Big Sandy Opening 9080 17.0 8.7 195 19.0 8.9 213
Blind Bull Sum 8650 32.8 15.4 213 -M 13.9 *
East Rim Divide 7930 15.2 7.1 214 17.1 8.2 209
Elkhart Park G.S. 9400 14.0 8.1 173 18.9 9.1 208
Gros Ventre Summit 8750 -M 8.8 * -M 8.8 *
Gunsight Pass 9820 15.5 9.0 172 18.4 9.7 190
Kendall R.S. 7740 18.3 8.6 213 22.5 10.0 225
Loomis Park 8240 21.7 10.4 209 25.6 12.2 210
New Fork Lake 8340 14.0 7.3 192 14.0 7.6 184
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 15.7 8.5 185 21.3 10.0 213
Spring Creek Divide 9000 28.6 16.0 179 29.3 16.7 175
Triple Peak 8500 30.7 14.9 206 31.2 17.3 180
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Basin Index (%) 196 198
LOWER GREEN RIVER
Blacks Fork Jct 8870 8.6 -M * 11.4 -M *
Buck Pasture 9700 14.8 -M * 17.6 -M *
EF Blacks Fork GS 9360 12.0 -M * 9.8 -M *
Hams Fork 7840 13.9 8.0 174 15.8 7.9 200
Hewinta 9519 8.7 6.6 132 11.4 9.4 121
Hickerson Park 9145 6.3 4.5 140 6.4 6.6 97
Hole-in-Rock 9150 5.1 4.5 113 7.0 6.2 113
Indian Creek 9425 28.5 16.0 178 -M 15.2 *
Kelley R.S. 8180 20.3 9.8 207 23.9 12.5 191
Spirit Lk 10235 10.7 -M * 12.1 -M *
Steel Creek Park 10200 12.4 9.7 128 14.4 10.8 133
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Basin Index (%) 161 148
UPPER BEAR RIVER
Bear River RS 8777 10.6 -M * 13.0 -M *
Bug Lake 7950 26.1 12.6 207 24.0 13.4 179
Burts Miller Ranch 8000 5.5 -M * 6.5 -M *
Chalk Creek #1 8993 25.5 15.2 168 26.9 17.0 158
Hayden Fork 9212 17.5 9.9 177 -M 14.2 *
Kelley R.S. 8180 20.3 9.8 207 23.9 12.5 191
Lily Lake 9156 12.2 8.3 147 14.4 11.6 124
Monte Cristo 8960 26.2 17.8 147 -M 17.6 *
Salt River Summit 7760 16.9 8.8 192 22.1 11.5 192
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Basin Index (%) 176 169
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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.