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: JANUARY 18 , 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 15.2 9.8 155 22.5 12.3 183
Black Bear 8170 21.1 21.1 100 30.2 21.8 139
Blind Bull Sum 8650 21.5 12.4 173 -M 11.5 *
Cottonwood Creek 7670 14.7 10.8 136 20.9 14.0 149
East Rim Divide 7930 10.1 5.8 174 12.5 6.8 184
Grand Targhee 9260 27.1 21.3 127 25.4 18.0 141
Granite Creek 6770 14.8 8.8 168 20.5 11.9 172
Grassy Lake 7265 22.0 16.9 130 33.1 21.0 158
Gros Ventre Summit 8750 9.3 7.5 124 13.6 7.4 184
Gunsight Pass 9820 10.1 7.5 135 14.2 7.9 180
Lewis Lake Divide 7850 18.9 16.8 112 30.8 20.5 150
Phillips Bench 8200 17.2 15.1 114 26.3 16.1 163
Salt River Summit 7760 11.1 6.5 171 16.5 9.4 176
Snake River Station 6920 13.7 9.2 149 21.7 13.6 160
Spring Creek Divide 9000 19.2 12.3 156 22.6 13.7 165
Thumb Divide 7980 9.9 8.1 122 15.4 10.8 143
Togwotee Pass 9580 17.6 13.1 134 21.3 14.2 150
Two Ocean Plateau 9240 23.0 15.6 147 23.6 15.5 152
Willow Creek 8380 18.5 14.5 128 -M 19.2 *
Younts Peak 8350 12.2 8.6 142 16.5 9.5 174
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Basin Index (%) 135 159
MADISON-GALLATIN
Black Bear 8170 21.1 21.1 100 30.2 21.8 139
Canyon 7870 9.1 7.3 125 15.3 9.5 161
Madison Plateau 7750 12.6 12.7 99 21.9 15.3 143
West Yellowstone 6700 7.1 6.4 111 14.6 8.5 172
Whiskey Creek 6800 8.0 8.5 94 16.0 11.8 136
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Basin Index (%) 103 146
YELLOWSTONE
Beartooth Lake 9360 15.2 12.5 122 11.6 11.4 102
Burnt Mtn 5880 4.5 2.2 205 8.4 7.4 114
Canyon 7870 9.1 7.3 125 15.3 9.5 161
Cole Creek 7850 6.1 7.3 84 5.2 7.1 73
Evening Star 9200 18.2 14.2 128 24.6 16.0 154
Fisher Creek 9100 17.8 18.6 96 23.0 18.4 125
Northeast Entrance 7350 6.4 5.5 116 11.6 7.4 157
Parker Peak 9400 16.0 11.7 137 18.8 10.2 184
Sylvan Lake 8420 12.4 11.3 110 22.9 13.3 172
Thumb Divide 7980 9.9 8.1 122 15.4 10.8 143
Two Ocean Plateau 9240 23.0 15.6 147 23.6 15.5 152
White Mill 8700 14.7 13.0 113 17.9 13.8 130
Wolverine 7650 -M 6.0 * -M 7.4 *
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Basin Index (%) 120 141
WIND RIVER
Burroughs Creek 8750 11.9 -M * 14.6 -M *
Castle Creek 8400 6.6 -M * 8.8 -M *
Cold Springs 9630 6.0 4.1 146 8.6 5.7 151
Deer Park 9700 17.3 7.4 234 20.8 11.0 189
Hobbs Park 10100 11.9 7.4 161 11.9 7.1 168
Kirwin 9550 9.5 5.3 179 12.6 6.7 188
Little Warm 9370 6.6 5.7 116 11.7 7.4 158
Owl Creek 8975 3.6 3.0 120 5.2 3.3 158
South Pass 9040 16.4 7.9 208 16.2 9.8 165
St. Lawrence Alt 8620 3.2 3.5 91 7.2 4.9 147
Togwotee Pass 9580 17.6 13.1 134 21.3 14.2 150
Townsend Creek 8700 6.3 4.4 143 9.2 6.6 139
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Basin Index (%) 159 163
BIGHORN BASIN
Bald Mtn. 9380 11.8 10.0 118 10.7 9.7 110
Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96
Bone Springs Div 9350 9.1 8.9 102 9.8 8.6 114
Grave Springs 8550 3.4 4.4 77 4.6 5.9 78
Kirwin 9550 9.5 5.3 179 12.6 6.7 188
Marquette 8760 4.6 -M * 8.1 -M *
Middle Powder 7760 4.2 6.0 70 5.0 6.8 74
Owl Creek 8975 3.6 3.0 120 5.2 3.3 158
Powder River Pass 9480 3.4 5.8 59 6.5 7.1 92
Shell Creek 9580 9.7 8.4 115 7.9 7.9 100
Timber Creek 7950 3.4 2.7 126 4.7 4.3 109
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Basin Index (%) 106 110
SHOSHONE RIVER
Blackwater 9780 19.2 13.0 148 22.9 11.9 192
Evening Star 9200 18.2 14.2 128 24.6 16.0 154
Marquette 8760 4.6 -M * 8.1 -M *
Sylvan Road 7120 9.1 6.9 132 19.3 10.7 180
Younts Peak 8350 12.2 8.6 142 16.5 9.5 174
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Basin Index (%) 137 173
POWDER RIVER
Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96
Cloud Peak Reservoir 9860 6.8 7.4 92 8.9 7.2 124
Grave Springs 8550 3.4 4.4 77 4.6 5.9 78
Hansen Sawmill 8360 4.4 3.5 126 6.2 4.6 135
Middle Powder 7760 4.2 6.0 70 5.0 6.8 74
Powder River Pass 9480 3.4 5.8 59 6.5 7.1 92
Soldier Park 8720 7.1 -M * 6.5 -M *
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Basin Index (%) 83 98
TONGUE RIVER
Big Goose 7990 5.1 4.4 116 6.1 6.0 102
Bone Springs Div 9350 9.1 8.9 102 9.8 8.6 114
Burgess Junction 7880 5.2 6.0 87 6.6 6.9 96
Dome Lake 8880 6.3 6.2 102 7.8 7.6 103
Little Goose 8870 5.4 -M * 7.7 -M *
Sucker Creek 8880 6.1 6.4 95 6.7 7.8 86
Tie Creek 6870 3.7 2.9 128 6.8 6.6 103
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Basin Index (%) 102 101
BELLE FOURCHE
Cole Canyon 5910 3.2 2.8 114 4.2 5.2 81
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Basin Index (%) 114 81
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 4.1 90 4.9 7.1 69
North Rapid Creek 6130 4.0 3.8 105 4.4 5.8 76
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Basin Index (%) 97 72
UPPER N. PLATTE
Arapaho Ridge 10960 17.6 11.2 157 18.6 12.9 144
Blackhall Mtn 9820 23.3 -M * 24.5 -M *
Columbine 9160 17.5 12.6 139 18.8 14.4 131
Divide Peak 8880 11.9 10.7 111 14.5 12.2 119
Joe Wright 10120 13.6 11.5 118 19.6 14.3 137
Laprele Creek 8375 6.3 5.0 126 6.1 6.8 90
Med Bow 10500 24.4 -M * 23.4 -M *
North French Creek 10130 15.3 14.2 108 16.9 14.9 113
Never Summer 10280 -M 10.7 * -M -M *
Old Battle 10000 22.6 15.9 142 24.7 19.9 124
Rawah 9020 9.3 5.5 169 11.8 8.5 139
Sage Creek Basin 7850 9.6 7.3 132 10.2 8.7 117
Sand Lake 10050 18.1 14.6 124 17.5 13.5 130
South Brush Creek 8440 6.4 6.2 103 7.6 8.6 88
Tower 10500 27.4 23.2 118 30.4 22.5 135
Webber Springs 9250 18.0 12.1 149 21.9 15.1 145
Willow Creek Pass 9540 12.4 6.3 197 13.1 7.5 175
Zirkel 9340 25.4 15.9 160 26.3 16.8 157
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Basin Index (%) 134 131
SWEETWATER
Deer Park 9700 17.3 7.4 234 20.8 11.0 189
Larsen Creek 9000 11.5 6.2 185 15.0 -M *
South Pass 9040 16.4 7.9 208 16.2 9.8 165
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Basin Index (%) 210 178
LOWER N. PLATTE
Casper Mtn. 7900 5.8 6.8 85 6.1 8.3 73
Laprele Creek 8375 6.3 5.0 126 6.1 6.8 90
Reno Hill 8400 -M 6.7 * -M 8.1 *
Windy Peak 7900 5.0 3.7 135 5.7 5.8 98
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Basin Index (%) 110 86
LARAMIE RIVER
Brooklyn Lake 10240 15.1 11.0 137 14.1 11.3 125
Cinnabar Park 9574 12.4 11.7 106 15.2 14.4 106
Crow Creek 8330 4.0 5.2 77 5.7 6.0 95
Deadman Hill 10220 13.6 8.4 162 13.5 9.2 147
Rawah 9020 9.3 5.5 169 11.8 8.5 139
Roach 9700 11.6 9.0 129 13.7 10.6 129
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Basin Index (%) 130 123
S. PLATTE
Black Mountain 8920 7.0 -M * 8.2 -M *
Crow Creek 8330 4.0 5.2 77 5.7 6.0 95
Deadman Hill 10220 13.6 8.4 162 13.5 9.2 147
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Basin Index (%) 129 126
LITTLE SNAKE RIVER
Battle Mountain 7440 8.0 5.7 140 -M 8.7 *
Divide Peak 8880 11.9 10.7 111 14.5 12.2 119
Elk River 8700 14.6 9.5 154 14.8 11.2 132
Little Snake River 8915 20.5 12.5 164 26.2 18.0 146
Old Battle 10000 22.6 15.9 142 24.7 19.9 124
Sage Creek Basin 7850 9.6 7.3 132 10.2 8.7 117
Sandstone RS 8150 9.9 7.0 141 10.6 10.6 100
Whiskey Park 8950 17.6 13.9 127 20.6 15.5 133
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Basin Index (%) 139 127
UPPER GREEN RIVER
Big Sandy Opening 9080 12.4 7.0 177 14.8 7.5 197
Blind Bull Sum 8650 21.5 12.4 173 -M 11.5 *
East Rim Divide 7930 10.1 5.8 174 12.5 6.8 184
Elkhart Park G.S. 9400 9.3 6.6 141 14.7 7.7 191
Gros Ventre Summit 8750 9.3 7.5 124 13.6 7.4 184
Gunsight Pass 9820 10.1 7.5 135 14.2 7.9 180
Kendall R.S. 7740 11.8 6.6 179 16.1 8.2 196
Loomis Park 8240 14.2 8.0 178 19.4 10.0 194
New Fork Lake 8340 9.4 5.8 162 9.9 6.3 157
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 11.3 6.5 174 15.9 8.2 194
Spring Creek Divide 9000 19.2 12.3 156 22.6 13.7 165
Triple Peak 8500 20.8 11.5 181 -M 14.1 *
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Basin Index (%) 163 184
LOWER GREEN RIVER
Blacks Fork Jct 8870 7.5 -M * 9.7 -M *
Buck Pasture 9700 11.9 -M * 14.7 -M *
EF Blacks Fork GS 9360 8.6 -M * 9.3 -M *
Hams Fork 7840 10.1 5.9 171 12.2 6.5 188
Hewinta 9519 8.0 5.0 160 10.3 7.7 134
Hickerson Park 9145 5.5 3.2 172 5.7 5.6 102
Hole-in-Rock 9150 4.5 3.5 129 6.4 5.3 121
Indian Creek 9425 19.9 12.7 157 -M 12.4 *
Kelley R.S. 8180 13.8 7.6 182 18.9 10.3 183
Spirit Lk 10235 8.3 -M * 10.0 -M *
Steel Creek Park 10200 10.9 7.4 147 12.6 8.9 142
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Basin Index (%) 160 149
UPPER BEAR RIVER
Bear River RS 8777 8.8 -M * 10.8 -M *
Bug Lake 7950 19.1 8.8 217 18.5 11.0 168
Burts Miller Ranch 8000 4.8 -M * 5.4 -M *
Chalk Creek #1 8993 19.5 11.8 165 -M 13.8 *
Hayden Fork 9212 13.7 7.4 185 18.3 11.6 158
Kelley R.S. 8180 13.8 7.6 182 18.9 10.3 183
Lily Lake 9156 10.3 6.6 156 12.0 9.6 125
Monte Cristo 8960 18.7 13.8 136 -M 14.5 *
Salt River Summit 7760 11.1 6.5 171 16.5 9.4 176
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Basin Index (%) 170 162
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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.