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 WEDNESDAY: FEBRUARY 15 , 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 21.8 12.6 173 29.4 15.5 190
Black Bear 8170 29.7 27.1 110 38.9 27.6 141
Blind Bull Sum 8650 32.6 15.9 205 -M 14.4 *
Cottonwood Creek 7670 21.2 14.6 145 28.2 17.6 160
East Rim Divide 7930 15.3 7.3 210 17.2 8.5 202
Grand Targhee 9260 32.8 26.4 124 31.0 23.0 135
Granite Creek 6770 23.0 12.2 189 26.3 15.0 175
Grassy Lake 7265 29.2 23.8 123 41.5 26.8 155
Gros Ventre Summit 8750 -M 8.9 * -M 9.0 *
Gunsight Pass 9820 15.6 9.4 166 18.9 10.0 189
Lewis Lake Divide 7850 29.0 23.0 126 39.6 25.9 153
Phillips Bench 8200 26.1 17.7 147 35.3 20.3 174
Salt River Summit 7760 16.9 9.2 184 22.5 11.9 189
Snake River Station 6920 17.5 13.0 135 28.7 17.1 168
Spring Creek Divide 9000 28.7 16.3 176 29.5 17.3 171
Thumb Divide 7980 17.0 10.6 160 21.0 13.3 158
Togwotee Pass 9580 24.6 16.4 150 28.6 17.6 162
Two Ocean Plateau 9240 -M 19.4 * -M 19.4 *
Willow Creek 8380 26.7 19.3 138 36.4 24.1 151
Younts Peak 8350 19.5 10.7 182 23.4 11.6 202
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Basin Index (%) 150 164
MADISON-GALLATIN
Black Bear 8170 29.7 27.1 110 38.9 27.6 141
Canyon 7870 13.6 9.3 146 20.2 11.9 170
Madison Plateau 7750 18.8 15.6 121 27.4 19.0 144
West Yellowstone 6700 10.0 7.6 132 18.0 10.7 168
Whiskey Creek 6800 11.7 10.7 109 20.1 14.6 138
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Basin Index (%) 119 149
YELLOWSTONE
Beartooth Lake 9360 23.6 15.3 154 19.6 14.3 137
Burnt Mtn 5880 4.9 3.4 144 10.2 8.6 119
Canyon 7870 13.6 9.3 146 20.2 11.9 170
Cole Creek 7850 7.5 8.8 85 5.7 8.3 69
Evening Star 9200 27.7 17.5 158 30.0 20.1 149
Fisher Creek 9100 29.1 23.0 127 33.5 23.0 146
Northeast Entrance 7350 9.2 7.3 126 15.0 9.1 165
Parker Peak 9400 23.8 14.0 170 23.0 12.7 181
Sylvan Lake 8420 18.1 14.0 129 29.1 16.3 179
Thumb Divide 7980 17.0 10.6 160 21.0 13.3 158
Two Ocean Plateau 9240 -M 19.4 * -M 19.4 *
White Mill 8700 22.6 16.2 140 24.9 17.2 145
Wolverine 7650 13.8 7.8 177 16.9 9.1 186
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Basin Index (%) 143 152
WIND RIVER
Burroughs Creek 8750 18.4 -M * 20.7 -M *
Castle Creek 8400 10.0 -M * 12.1 -M *
Cold Springs 9630 9.3 5.1 182 11.6 6.7 173
Deer Park 9700 22.9 9.7 236 26.5 13.9 191
Hobbs Park 10100 16.2 8.5 191 15.6 8.6 181
Kirwin 9550 13.9 6.2 224 17.1 7.9 216
Little Warm 9370 11.2 7.2 156 16.9 8.9 190
Owl Creek 8975 5.6 3.3 170 7.2 3.9 185
South Pass 9040 21.4 10.1 212 20.0 12.1 165
St. Lawrence Alt 8620 5.1 4.5 113 9.4 5.8 162
Togwotee Pass 9580 24.6 16.4 150 28.6 17.6 162
Townsend Creek 8700 8.5 5.8 147 11.7 7.8 150
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Basin Index (%) 181 177
BIGHORN BASIN
Bald Mtn. 9380 13.9 12.8 109 12.3 11.8 104
Bear Trap Meadow 8200 3.8 3.8 100 5.1 5.6 91
Bone Springs Div 9350 11.7 10.7 109 11.7 10.6 110
Grave Springs 8550 4.2 5.5 76 4.8 7.1 68
Kirwin 9550 13.9 6.2 224 17.1 7.9 216
Marquette 8760 6.3 -M * 10.0 -M *
Middle Powder 7760 5.0 7.1 70 5.5 8.0 69
Owl Creek 8975 5.6 3.3 170 7.2 3.9 185
Powder River Pass 9480 4.9 7.1 69 7.8 8.6 91
Shell Creek 9580 11.5 10.1 114 9.1 9.6 95
Timber Creek 7950 4.4 3.1 142 5.8 4.8 121
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Basin Index (%) 113 111
SHOSHONE RIVER
Blackwater 9780 27.5 15.5 177 30.8 14.6 211
Evening Star 9200 27.7 17.5 158 30.0 20.1 149
Marquette 8760 6.3 -M * 10.0 -M *
Sylvan Road 7120 13.3 8.6 155 24.4 12.9 189
Younts Peak 8350 19.5 10.7 182 23.4 11.6 202
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Basin Index (%) 168 183
POWDER RIVER
Bear Trap Meadow 8200 3.8 3.8 100 5.1 5.6 91
Cloud Peak Reservoir 9860 8.7 9.5 92 10.3 8.6 120
Grave Springs 8550 4.2 5.5 76 4.8 7.1 68
Hansen Sawmill 8360 6.0 4.3 140 7.8 5.5 142
Middle Powder 7760 5.0 7.1 70 5.5 8.0 69
Powder River Pass 9480 4.9 7.1 69 7.8 8.6 91
Soldier Park 8720 9.4 -M * 7.8 -M *
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Basin Index (%) 87 95
TONGUE RIVER
Big Goose 7990 6.4 5.6 114 7.4 7.2 103
Bone Springs Div 9350 11.7 10.7 109 11.7 10.6 110
Burgess Junction 7880 6.9 7.4 93 8.1 8.2 99
Dome Lake 8880 8.1 7.7 105 9.5 9.1 104
Little Goose 8870 6.9 -M * 9.2 -M *
Sucker Creek 8880 7.8 7.9 99 7.9 9.5 83
Tie Creek 6870 4.4 3.8 116 8.0 7.7 104
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Basin Index (%) 105 101
BELLE FOURCHE
Cole Canyon 5910 3.2 4.4 73 4.7 6.5 72
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Basin Index (%) 73 72
CHEYENNE RIVER BASIN
Blind Park 6890 4.5 5.6 80 5.9 8.5 69
North Rapid Creek 6130 4.4 5.3 83 5.2 6.9 75
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Basin Index (%) 82 72
UPPER N. PLATTE
Arapaho Ridge 10960 21.4 14.6 147 21.8 16.0 136
Blackhall Mtn 9820 30.0 -M * 29.6 -M *
Columbine 9160 21.6 17.1 126 23.1 18.4 126
Divide Peak 8880 15.3 13.9 110 17.8 15.3 116
Joe Wright 10120 15.9 14.4 110 23.0 17.9 128
Laprele Creek 8375 9.0 6.4 141 8.5 8.4 101
Med Bow 10500 29.8 -M * 27.6 -M *
North French Creek 10130 19.1 18.9 101 20.4 18.9 108
Never Summer 10280 18.6 13.9 134 15.4 -M *
Old Battle 10000 29.7 21.7 137 31.2 25.3 123
Rawah 9020 10.9 7.3 149 13.5 9.8 138
Sage Creek Basin 7850 12.6 9.5 133 12.8 10.9 117
Sand Lake 10050 22.2 18.3 121 21.0 16.9 124
South Brush Creek 8440 8.4 8.2 102 9.2 10.5 88
Tower 10500 35.4 32.0 111 37.0 28.6 129
Webber Springs 9250 23.4 16.4 143 27.4 19.0 144
Willow Creek Pass 9540 15.0 8.4 179 15.9 9.3 171
Zirkel 9340 34.5 20.6 167 35.9 21.3 169
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Basin Index (%) 130 129
SWEETWATER
Deer Park 9700 22.9 9.7 236 26.5 13.9 191
Larsen Creek 9000 16.1 8.4 192 18.6 -M *
South Pass 9040 21.4 10.1 212 20.0 12.1 165
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Basin Index (%) 214 179
LOWER N. PLATTE
Casper Mtn. 7900 7.6 8.7 87 7.5 10.0 75
Laprele Creek 8375 9.0 6.4 141 8.5 8.4 101
Reno Hill 8400 8.6 8.6 100 9.0 10.0 90
Windy Peak 7900 7.2 5.0 144 7.7 7.1 108
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Basin Index (%) 113 92
LARAMIE RIVER
Brooklyn Lake 10240 19.3 13.6 142 17.4 14.4 121
Cinnabar Park 9574 15.0 15.6 96 17.7 18.0 98
Crow Creek 8330 3.8 6.2 61 6.2 7.1 87
Deadman Hill 10220 16.4 11.3 145 15.9 11.4 139
Rawah 9020 10.9 7.3 149 13.5 9.8 138
Roach 9700 14.0 11.3 124 16.5 13.2 125
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Basin Index (%) 122 118
S. PLATTE
Black Mountain 8920 7.6 -M * 8.7 -M *
Crow Creek 8330 3.8 6.2 61 6.2 7.1 87
Deadman Hill 10220 16.4 11.3 145 15.9 11.4 139
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Basin Index (%) 115 119
LITTLE SNAKE RIVER
Battle Mountain 7440 9.1 8.4 108 12.5 11.0 114
Divide Peak 8880 15.3 13.9 110 17.8 15.3 116
Elk River 8700 16.4 13.5 121 16.8 14.4 117
Little Snake River 8915 26.3 18.0 146 32.1 23.0 140
Old Battle 10000 29.7 21.7 137 31.2 25.3 123
Sage Creek Basin 7850 12.6 9.5 133 12.8 10.9 117
Sandstone RS 8150 10.6 9.6 110 12.9 13.5 96
Whiskey Park 8950 21.7 18.8 115 24.0 20.3 118
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Basin Index (%) 125 120
UPPER GREEN RIVER
Big Sandy Opening 9080 17.0 8.9 191 19.2 9.3 206
Blind Bull Sum 8650 32.6 15.9 205 -M 14.4 *
East Rim Divide 7930 15.3 7.3 210 17.2 8.5 202
Elkhart Park G.S. 9400 14.1 8.4 168 19.1 9.3 205
Gros Ventre Summit 8750 -M 8.9 * -M 9.0 *
Gunsight Pass 9820 15.6 9.4 166 18.9 10.0 189
Kendall R.S. 7740 18.4 8.8 209 22.8 10.3 221
Loomis Park 8240 21.6 10.5 206 26.1 12.5 209
New Fork Lake 8340 13.9 7.4 188 14.1 7.8 181
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 15.7 8.9 176 21.6 10.3 210
Spring Creek Divide 9000 28.7 16.3 176 29.5 17.3 171
Triple Peak 8500 30.3 15.3 198 31.1 17.9 174
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Basin Index (%) 191 194
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.7 -M * 11.4 -M *
Buck Pasture 9632 14.9 -M * 17.9 -M *
EF Blacks Fork GS 9360 12.5 -M * -M -M *
Hams Fork 7840 14.1 8.2 172 16.0 8.2 195
Hewinta 9519 9.7 6.8 143 11.5 9.7 119
Hickerson Park 9145 6.4 4.9 131 6.5 6.8 96
Hole-in-Rock 9150 5.2 4.7 111 7.1 6.4 111
Indian Creek 9425 28.8 16.3 177 -M 15.8 *
Kelley R.S. 8180 20.4 10.3 198 24.1 13.0 185
Spirit Lk 10235 10.5 -M * 12.2 -M *
Steel Creek Park 10200 12.5 10.1 124 14.4 11.1 130
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Basin Index (%) 158 144
UPPER BEAR RIVER
Bear River RS 8777 10.8 -M * 13.0 -M *
Bug Lake 7950 25.9 13.0 199 24.2 13.8 175
Burts Miller Ranch 8000 5.6 -M * 6.6 -M *
Chalk Creek #1 8993 25.7 15.7 164 27.0 17.5 154
Hayden Fork 9212 17.9 10.6 169 -M 14.7 *
Kelley R.S. 8180 20.4 10.3 198 24.1 13.0 185
Lily Lake 9156 12.4 8.7 143 14.4 11.9 121
Monte Cristo 8960 26.4 18.4 143 -M 18.2 *
Salt River Summit 7760 16.9 9.2 184 22.5 11.9 189
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Basin Index (%) 169 165
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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.