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 MONDAY: JANUARY 30 , 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 15.5 10.7 145 23.4 13.8 170
Black Bear 8170 22.5 23.2 97 31.6 24.6 128
Blind Bull Sum 8650 22.5 13.6 165 16.0 12.6 127
Cottonwood Creek 7670 16.4 12.5 131 22.6 15.6 145
East Rim Divide 7930 11.0 6.7 164 13.2 7.6 174
Grand Targhee 9260 28.6 23.4 122 26.4 20.5 129
Granite Creek 6770 15.8 10.2 155 20.9 13.4 156
Grassy Lake 7265 23.5 19.8 119 34.7 23.6 147
Gros Ventre Summit 8750 9.6 8.2 117 13.9 8.1 172
Gunsight Pass 9820 10.4 8.1 128 14.3 8.7 164
Lewis Lake Divide 7850 20.0 19.6 102 31.7 22.8 139
Phillips Bench 8200 18.7 15.9 118 28.4 18.0 158
Salt River Summit 7760 12.4 7.6 163 17.5 10.5 167
Snake River Station 6920 14.1 10.5 134 23.3 15.2 153
Spring Creek Divide 9000 20.6 14.0 147 23.2 15.2 153
Thumb Divide 7980 10.4 9.5 109 15.9 12.0 132
Togwotee Pass 9580 18.3 14.8 124 22.1 15.6 142
Two Ocean Plateau 9240 23.5 17.1 137 23.9 17.1 140
Willow Creek 8380 20.1 16.9 119 31.1 21.3 146
Younts Peak 8350 12.6 9.4 134 16.9 10.3 164
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Basin Index (%) 128 147
MADISON-GALLATIN
Black Bear 8170 22.5 23.2 97 31.6 24.6 128
Canyon 7870 9.3 8.0 116 15.7 10.5 150
Madison Plateau 7750 13.7 14.0 98 22.8 17.2 133
West Yellowstone 6700 7.6 7.0 109 15.1 9.5 159
Whiskey Creek 6800 8.8 9.5 93 16.7 13.1 127
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Basin Index (%) 100 136
YELLOWSTONE
Beartooth Lake 9360 15.5 13.6 114 11.9 12.7 94
Burnt Mtn 5880 4.5 2.4 188 8.6 7.8 110
Canyon 7870 9.3 8.0 116 15.7 10.5 150
Cole Creek 7850 6.2 8.2 76 5.3 7.5 71
Evening Star 9200 18.8 16.0 118 25.2 17.7 142
Fisher Creek 9100 18.3 20.3 90 23.5 20.5 115
Northeast Entrance 7350 6.6 6.3 105 11.8 8.1 146
Parker Peak 9400 16.3 12.8 127 19.1 11.2 171
Sylvan Lake 8420 12.9 12.8 101 23.4 14.6 160
Thumb Divide 7980 10.4 9.5 109 15.9 12.0 132
Two Ocean Plateau 9240 23.5 17.1 137 23.9 17.1 140
White Mill 8700 15.1 14.3 106 18.2 15.2 120
Wolverine 7650 -M 6.9 * -M 8.1 *
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Basin Index (%) 111 131
WIND RIVER
Burroughs Creek 8750 12.3 -M * 15.1 -M *
Castle Creek 8400 6.8 -M * 8.8 -M *
Cold Springs 9630 6.4 4.4 145 8.9 6.1 146
Deer Park 9700 18.1 9.1 199 21.4 12.1 177
Hobbs Park 10100 12.5 7.9 158 12.6 7.7 164
Kirwin 9550 10.0 5.7 175 13.0 7.2 181
Little Warm 9370 6.8 6.2 110 12.0 8.0 150
Owl Creek 8975 4.1 3.1 132 5.6 3.5 160
South Pass 9040 17.1 8.5 201 16.5 10.8 153
St. Lawrence Alt 8620 3.8 4.1 93 7.7 5.3 145
Togwotee Pass 9580 18.3 14.8 124 22.1 15.6 142
Townsend Creek 8700 7.0 5.1 137 10.0 7.0 143
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Basin Index (%) 151 156
BIGHORN BASIN
Bald Mtn. 9380 12.3 10.7 115 11.0 10.6 104
Bear Trap Meadow 8200 3.4 3.4 100 4.8 5.1 94
Bone Springs Div 9350 9.5 9.7 98 10.0 9.5 105
Grave Springs 8550 3.8 4.9 78 4.8 6.3 76
Kirwin 9550 10.0 5.7 175 13.0 7.2 181
Marquette 8760 5.0 -M * 8.4 -M *
Middle Powder 7760 4.7 6.2 76 5.2 7.3 71
Owl Creek 8975 4.1 3.1 132 5.6 3.5 160
Powder River Pass 9480 3.8 6.3 60 6.8 7.8 87
Shell Creek 9580 10.0 9.0 111 8.2 8.8 93
Timber Creek 7950 3.7 2.9 128 5.0 4.5 111
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Basin Index (%) 105 105
SHOSHONE RIVER
Blackwater 9780 19.5 14.6 134 23.3 13.1 178
Evening Star 9200 18.8 16.0 118 25.2 17.7 142
Marquette 8760 5.0 -M * 8.4 -M *
Sylvan Road 7120 9.4 7.7 122 19.6 11.7 168
Younts Peak 8350 12.6 9.4 134 16.9 10.3 164
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Basin Index (%) 126 161
POWDER RIVER
Bear Trap Meadow 8200 3.4 3.4 100 4.8 5.1 94
Cloud Peak Reservoir 9860 7.5 8.2 91 9.3 7.8 119
Grave Springs 8550 3.8 4.9 78 4.8 6.3 76
Hansen Sawmill 8360 4.9 4.0 122 6.7 5.0 134
Middle Powder 7760 4.7 6.2 76 5.2 7.3 71
Powder River Pass 9480 3.8 6.3 60 6.8 7.8 87
Soldier Park 8720 7.5 -M * 6.9 -M *
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Basin Index (%) 85 96
TONGUE RIVER
Big Goose 7990 5.4 4.8 112 6.3 6.5 97
Bone Springs Div 9350 9.5 9.7 98 10.0 9.5 105
Burgess Junction 7880 5.5 6.5 85 6.9 7.4 93
Dome Lake 8880 6.5 6.7 97 8.0 8.3 96
Little Goose 8870 5.8 -M * 8.0 -M *
Sucker Creek 8880 6.5 7.0 93 7.0 8.6 81
Tie Creek 6870 3.9 3.3 118 7.0 7.0 100
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Basin Index (%) 98 96
BELLE FOURCHE
Cole Canyon 5910 3.5 3.2 109 4.3 5.6 77
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Basin Index (%) 109 77
CHEYENNE RIVER BASIN
Blind Park 6890 4.2 4.5 93 5.2 7.6 68
North Rapid Creek 6130 4.5 4.2 107 4.7 6.2 76
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Basin Index (%) 100 72
UPPER N. PLATTE
Arapaho Ridge 10960 18.7 13.0 144 19.5 13.9 140
Blackhall Mtn 9820 25.3 -M * 26.7 -M *
Columbine 9160 19.1 14.4 133 20.8 16.1 129
Divide Peak 8880 13.4 12.1 111 16.0 13.4 119
Joe Wright 10120 14.8 12.8 116 20.7 15.8 131
Laprele Creek 8375 7.1 5.4 131 6.9 7.4 93
Med Bow 10500 26.3 -M * 25.0 -M *
North French Creek 10130 16.7 15.8 106 18.3 16.7 110
Never Summer 10280 -M 12.2 * -M -M *
Old Battle 10000 25.1 18.9 133 26.5 22.1 120
Rawah 9020 10.0 6.1 164 12.6 9.0 140
Sage Creek Basin 7850 11.2 8.2 137 11.7 9.6 122
Sand Lake 10050 19.4 16.2 120 18.7 14.9 126
South Brush Creek 8440 7.1 7.2 99 8.3 9.4 88
Tower 10500 30.4 27.0 113 32.2 25.1 128
Webber Springs 9250 19.8 13.4 148 23.6 16.8 140
Willow Creek Pass 9540 13.1 7.4 177 13.9 8.2 170
Zirkel 9340 27.6 18.1 152 32.7 18.5 177
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Basin Index (%) 129 130
SWEETWATER
Deer Park 9700 18.1 9.1 199 21.4 12.1 177
Larsen Creek 9000 12.2 7.1 172 15.6 -M *
South Pass 9040 17.1 8.5 201 16.5 10.8 153
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Basin Index (%) 192 166
LOWER N. PLATTE
Casper Mtn. 7900 6.7 7.4 91 6.9 9.0 77
Laprele Creek 8375 7.1 5.4 131 6.9 7.4 93
Reno Hill 8400 -M 7.6 * -M 8.8 *
Windy Peak 7900 5.8 4.1 141 6.5 6.3 103
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Basin Index (%) 116 89
LARAMIE RIVER
Brooklyn Lake 10240 16.3 11.9 137 15.0 12.7 118
Cinnabar Park 9574 13.2 13.0 102 15.9 15.7 101
Crow Creek 8330 4.2 5.7 74 6.0 6.4 94
Deadman Hill 10220 14.2 9.8 145 14.1 10.1 140
Rawah 9020 10.0 6.1 164 12.6 9.0 140
Roach 9700 12.4 9.8 127 14.7 11.7 126
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Basin Index (%) 125 119
S. PLATTE
Black Mountain 8920 7.2 -M * 8.5 -M *
Crow Creek 8330 4.2 5.7 74 6.0 6.4 94
Deadman Hill 10220 14.2 9.8 145 14.1 10.1 140
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Basin Index (%) 119 122
LITTLE SNAKE RIVER
Battle Mountain 7440 8.8 6.9 128 7.6 9.5 80
Divide Peak 8880 13.4 12.1 111 16.0 13.4 119
Elk River 8700 15.8 10.9 145 15.8 12.5 126
Little Snake River 8915 22.7 15.2 149 28.3 20.3 139
Old Battle 10000 25.1 18.9 133 26.5 22.1 120
Sage Creek Basin 7850 11.2 8.2 137 11.7 9.6 122
Sandstone RS 8150 10.7 7.9 135 11.7 11.8 99
Whiskey Park 8950 19.6 15.6 126 22.1 17.6 126
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Basin Index (%) 133 120
UPPER GREEN RIVER
Big Sandy Opening 9080 13.4 8.0 168 15.8 8.3 190
Blind Bull Sum 8650 22.5 13.6 165 16.0 12.6 127
East Rim Divide 7930 11.0 6.7 164 13.2 7.6 174
Elkhart Park G.S. 9400 10.1 7.4 136 15.4 8.4 183
Gros Ventre Summit 8750 9.6 8.2 117 13.9 8.1 172
Gunsight Pass 9820 10.4 8.1 128 14.3 8.7 164
Kendall R.S. 7740 12.4 7.8 159 16.8 9.1 185
Loomis Park 8240 15.2 9.4 162 20.2 11.1 182
New Fork Lake 8340 10.1 6.7 151 10.5 6.9 152
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 12.3 7.4 166 17.1 9.1 188
Spring Creek Divide 9000 20.6 14.0 147 23.2 15.2 153
Triple Peak 8500 22.2 12.9 172 23.4 15.7 149
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Basin Index (%) 154 165
LOWER GREEN RIVER
Blacks Fork Jct 8870 8.3 -M * 10.5 -M *
Buck Pasture 9700 13.8 -M * 16.4 -M *
EF Blacks Fork GS 9360 9.2 -M * 9.5 -M *
Hams Fork 7840 11.3 7.0 161 13.4 7.2 186
Hewinta 9519 8.8 5.5 160 11.0 8.5 129
Hickerson Park 9145 6.1 3.7 165 6.3 6.0 105
Hole-in-Rock 9150 5.1 3.9 131 6.9 5.7 121
Indian Creek 9425 21.6 14.3 151 -M 13.8 *
Kelley R.S. 8180 15.3 8.9 172 20.5 11.4 180
Spirit Lk 10235 9.8 -M * 11.4 -M *
Steel Creek Park 10200 11.9 8.5 140 13.5 9.8 138
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Basin Index (%) 155 147
UPPER BEAR RIVER
Bear River RS 8777 9.8 -M * 11.8 -M *
Bug Lake 7950 -M 10.3 * -M 12.2 *
Burts Miller Ranch 8000 5.6 -M * 6.0 -M *
Chalk Creek #1 8993 21.9 13.3 165 -M 15.5 *
Hayden Fork 9212 15.7 8.5 185 -M 12.9 *
Kelley R.S. 8180 15.3 8.9 172 20.5 11.4 180
Lily Lake 9156 10.8 7.3 148 13.1 10.5 125
Monte Cristo 8960 22.0 15.7 140 19.9 16.1 124
Salt River Summit 7760 12.4 7.6 163 17.5 10.5 167
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Basin Index (%) 160 146*
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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.