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: JANUARY 19 , 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 22.9 12.4 185
Black Bear 8170 21.2 21.3 100 30.3 21.9 138
Blind Bull Sum 8650 21.6 12.5 173 -M 11.6 *
Cottonwood Creek 7670 14.8 10.9 136 20.9 14.2 147
East Rim Divide 7930 10.2 5.9 173 12.5 6.9 181
Grand Targhee 9260 27.1 21.4 127 25.4 18.1 140
Granite Creek 6770 14.9 9.0 166 20.6 12.0 172
Grassy Lake 7265 22.1 17.2 128 33.3 21.2 157
Gros Ventre Summit 8750 9.3 7.6 122 13.6 7.4 184
Gunsight Pass 9820 10.1 7.6 133 14.1 8.0 176
Lewis Lake Divide 7850 19.1 17.0 112 30.9 20.7 149
Phillips Bench 8200 17.3 15.3 113 26.4 16.2 163
Salt River Summit 7760 11.1 6.6 168 16.5 9.5 174
Snake River Station 6920 13.8 9.3 148 21.9 13.7 160
Spring Creek Divide 9000 19.2 12.5 154 22.6 13.8 164
Thumb Divide 7980 10.0 8.2 122 15.4 10.9 141
Togwotee Pass 9580 17.5 13.1 134 21.3 14.3 149
Two Ocean Plateau 9240 23.2 15.6 149 23.6 15.6 151
Willow Creek 8380 18.5 14.8 125 27.8 19.3 144
Younts Peak 8350 12.3 8.7 141 16.7 9.5 176
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Basin Index (%) 134 157
MADISON-GALLATIN
Black Bear 8170 21.2 21.3 100 30.3 21.9 138
Canyon 7870 9.1 7.4 123 15.4 9.5 162
Madison Plateau 7750 12.7 13.0 98 22.0 15.4 143
West Yellowstone 6700 7.2 6.5 111 14.7 8.5 173
Whiskey Creek 6800 8.2 8.6 95 16.1 11.9 135
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Basin Index (%) 103 147
YELLOWSTONE
Beartooth Lake 9360 15.2 12.6 121 11.7 11.5 102
Burnt Mtn 5880 4.5 2.3 196 8.4 7.4 114
Canyon 7870 9.1 7.4 123 15.4 9.5 162
Cole Creek 7850 6.1 7.4 82 5.3 7.1 75
Evening Star 9200 18.3 14.3 128 24.6 16.2 152
Fisher Creek 9100 17.8 18.8 95 23.0 18.5 124
Northeast Entrance 7350 6.4 5.5 116 11.6 7.5 155
Parker Peak 9400 16.1 11.8 136 18.9 10.3 183
Sylvan Lake 8420 12.3 11.4 108 22.9 13.4 171
Thumb Divide 7980 10.0 8.2 122 15.4 10.9 141
Two Ocean Plateau 9240 23.2 15.6 149 23.6 15.6 151
White Mill 8700 14.7 13.2 111 18.0 13.9 129
Wolverine 7650 -M 6.1 * -M 7.5 *
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Basin Index (%) 120 140
WIND RIVER
Burroughs Creek 8750 11.8 -M * 14.6 -M *
Castle Creek 8400 6.6 -M * 8.8 -M *
Cold Springs 9630 6.0 4.2 143 8.6 5.8 148
Deer Park 9700 17.3 7.6 228 20.8 11.2 186
Hobbs Park 10100 12.0 7.4 162 12.0 7.2 167
Kirwin 9550 9.6 5.3 181 12.7 6.7 190
Little Warm 9370 6.6 5.7 116 11.8 7.4 159
Owl Creek 8975 3.6 3.0 120 5.2 3.3 158
South Pass 9040 16.5 8.0 206 16.2 9.9 164
St. Lawrence Alt 8620 3.2 3.6 89 7.1 4.9 145
Togwotee Pass 9580 17.5 13.1 134 21.3 14.3 149
Townsend Creek 8700 6.3 4.5 140 9.3 6.6 141
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Basin Index (%) 158 162
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 9.7 8.7 111
Grave Springs 8550 3.4 4.5 76 4.6 5.9 78
Kirwin 9550 9.6 5.3 181 12.7 6.7 190
Marquette 8760 4.6 -M * 8.0 -M *
Middle Powder 7760 4.2 6.0 70 5.1 6.8 75
Owl Creek 8975 3.6 3.0 120 5.2 3.3 158
Powder River Pass 9480 3.4 5.8 59 6.6 7.1 93
Shell Creek 9580 9.8 8.5 115 8.0 7.9 101
Timber Creek 7950 3.4 2.8 121 4.7 4.3 109
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Basin Index (%) 106 110
SHOSHONE RIVER
Blackwater 9780 19.2 13.0 148 22.9 12.0 191
Evening Star 9200 18.3 14.3 128 24.6 16.2 152
Marquette 8760 4.6 -M * 8.0 -M *
Sylvan Road 7120 9.1 7.0 130 19.4 10.8 180
Younts Peak 8350 12.3 8.7 141 16.7 9.5 176
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Basin Index (%) 137 172
POWDER RIVER
Bear Trap Meadow 8200 2.9 3.0 97 4.5 4.7 96
Cloud Peak Reservoir 9860 6.8 7.5 91 8.9 7.3 122
Grave Springs 8550 3.4 4.5 76 4.6 5.9 78
Hansen Sawmill 8360 4.4 3.6 122 6.2 4.6 135
Middle Powder 7760 4.2 6.0 70 5.1 6.8 75
Powder River Pass 9480 3.4 5.8 59 6.6 7.1 93
Soldier Park 8720 7.1 -M * 6.5 -M *
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Basin Index (%) 83 99
TONGUE RIVER
Big Goose 7990 5.1 4.4 116 6.1 6.0 102
Bone Springs Div 9350 9.1 8.9 102 9.7 8.7 111
Burgess Junction 7880 5.2 6.1 85 6.6 6.9 96
Dome Lake 8880 6.3 6.3 100 7.8 7.7 101
Little Goose 8870 5.4 -M * 7.7 -M *
Sucker Creek 8880 6.1 6.5 94 6.8 7.9 86
Tie Creek 6870 3.7 2.9 128 6.8 6.6 103
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Basin Index (%) 101 100
BELLE FOURCHE
Cole Canyon 5910 3.2 2.9 110 4.2 5.3 79
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Basin Index (%) 110 79
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 4.1 90 4.8 7.1 68
North Rapid Creek 6130 4.0 3.8 105 4.3 5.8 74
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Basin Index (%) 97 71
UPPER N. PLATTE
Arapaho Ridge 10960 17.7 11.2 158 18.6 12.9 144
Blackhall Mtn 9820 23.3 -M * 24.5 -M *
Columbine 9160 17.5 12.7 138 18.8 14.5 130
Divide Peak 8880 11.9 10.8 110 14.5 12.4 117
Joe Wright 10120 13.8 11.7 118 19.6 14.4 136
Laprele Creek 8375 6.4 5.1 125 6.2 6.9 90
Med Bow 10500 24.4 -M * 23.5 -M *
North French Creek 10130 15.3 14.3 107 17.0 15.0 113
Never Summer 10280 -M 10.8 * -M -M *
Old Battle 10000 22.7 16.1 141 24.8 20.1 123
Rawah 9020 9.3 5.6 166 11.8 8.5 139
Sage Creek Basin 7850 9.7 7.4 131 10.2 8.8 116
Sand Lake 10050 18.2 14.7 124 17.7 13.6 130
South Brush Creek 8440 6.4 6.3 102 7.7 8.6 90
Tower 10500 27.5 23.6 117 30.5 22.7 134
Webber Springs 9250 18.0 12.1 149 22.0 15.2 145
Willow Creek Pass 9540 12.4 6.4 194 13.2 7.5 176
Zirkel 9340 25.5 16.0 159 26.4 16.8 157
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Basin Index (%) 134 131
SWEETWATER
Deer Park 9700 17.3 7.6 228 20.8 11.2 186
Larsen Creek 9000 11.6 6.3 184 15.1 -M *
South Pass 9040 16.5 8.0 206 16.2 9.9 164
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Basin Index (%) 207 175
LOWER N. PLATTE
Casper Mtn. 7900 5.9 6.8 87 6.2 8.3 75
Laprele Creek 8375 6.4 5.1 125 6.2 6.9 90
Reno Hill 8400 -M 6.8 * -M 8.2 *
Windy Peak 7900 5.0 3.8 132 5.8 5.9 98
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Basin Index (%) 110 86
LARAMIE RIVER
Brooklyn Lake 10240 15.2 11.1 137 14.2 11.4 125
Cinnabar Park 9574 12.5 11.7 107 15.3 14.4 106
Crow Creek 8330 4.0 5.2 77 5.7 6.1 93
Deadman Hill 10220 13.6 8.5 160 13.5 9.3 145
Rawah 9020 9.3 5.6 166 11.8 8.5 139
Roach 9700 11.6 9.0 129 13.8 10.7 129
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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 6.1 93
Deadman Hill 10220 13.6 8.5 160 13.5 9.3 145
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Basin Index (%) 128 125
LITTLE SNAKE RIVER
Battle Mountain 7440 7.9 5.9 134 -M 8.7 *
Divide Peak 8880 11.9 10.8 110 14.5 12.4 117
Elk River 8700 14.7 9.6 153 14.8 11.4 130
Little Snake River 8915 20.5 12.6 163 26.2 18.2 144
Old Battle 10000 22.7 16.1 141 24.8 20.1 123
Sage Creek Basin 7850 9.7 7.4 131 10.2 8.8 116
Sandstone RS 8150 9.9 7.1 139 10.7 10.7 100
Whiskey Park 8950 17.7 14.2 125 20.7 15.7 132
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Basin Index (%) 137 125
UPPER GREEN RIVER
Big Sandy Opening 9080 12.5 7.0 179 14.8 7.6 195
Blind Bull Sum 8650 21.6 12.5 173 -M 11.6 *
East Rim Divide 7930 10.2 5.9 173 12.5 6.9 181
Elkhart Park G.S. 9400 9.3 6.7 139 14.6 7.7 190
Gros Ventre Summit 8750 9.3 7.6 122 13.6 7.4 184
Gunsight Pass 9820 10.1 7.6 133 14.1 8.0 176
Kendall R.S. 7740 11.9 6.7 178 16.2 8.2 198
Loomis Park 8240 14.2 8.2 173 19.4 10.1 192
New Fork Lake 8340 9.4 5.9 159 9.9 6.4 155
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 11.4 6.5 175 16.0 8.2 195
Spring Creek Divide 9000 19.2 12.5 154 22.6 13.8 164
Triple Peak 8500 20.9 11.6 180 -M 14.2 *
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Basin Index (%) 162 182
LOWER GREEN RIVER
Blacks Fork Jct 8870 7.7 -M * 9.7 -M *
Buck Pasture 9700 11.9 -M * 14.7 -M *
EF Blacks Fork GS 9360 8.5 -M * 9.3 -M *
Hams Fork 7840 10.2 6.1 167 12.3 6.6 186
Hewinta 9519 8.0 5.0 160 10.3 7.8 132
Hickerson Park 9145 5.5 3.2 172 5.9 5.7 104
Hole-in-Rock 9150 4.5 3.6 125 6.4 5.3 121
Indian Creek 9425 19.9 13.0 153 -M 12.5 *
Kelley R.S. 8180 13.8 7.7 179 19.0 10.4 183
Spirit Lk 10235 8.3 -M * 10.1 -M *
Steel Creek Park 10200 10.9 7.5 145 12.7 8.9 143
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Basin Index (%) 158 149
UPPER BEAR RIVER
Bear River RS 8777 8.9 -M * 10.7 -M *
Bug Lake 7950 19.1 8.9 215 19.5 11.1 176
Burts Miller Ranch 8000 4.8 -M * 5.6 -M *
Chalk Creek #1 8993 19.5 11.9 164 20.9 14.0 149
Hayden Fork 9212 13.9 7.5 185 18.3 11.7 156
Kelley R.S. 8180 13.8 7.7 179 19.0 10.4 183
Lily Lake 9156 10.2 6.6 155 12.1 9.6 126
Monte Cristo 8960 18.7 13.8 136 21.1 14.6 145
Salt River Summit 7760 11.1 6.6 168 16.5 9.5 174
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Basin Index (%) 169 157
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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.