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 26 , 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 23.6 13.3 177 31.6 17.0 186
Black Bear 8170 35.8 28.9 124 42.8 30.3 141
Blind Bull Sum 8650 36.1 17.5 206 -M 15.7 *
Cottonwood Creek 7670 24.2 16.3 148 31.0 19.2 161
East Rim Divide 7930 16.9 7.8 217 18.4 9.4 196
Grand Targhee 9260 35.5 29.2 122 31.9 24.5 130
Granite Creek 6770 27.4 13.4 204 -M 16.2 *
Grassy Lake 7265 31.5 25.6 123 42.6 29.1 146
Gros Ventre Summit 8750 16.6 9.5 175 -M 9.9 *
Gunsight Pass 9820 17.5 10.4 168 20.3 10.6 192
Lewis Lake Divide 7850 32.6 25.1 130 41.7 28.4 147
Phillips Bench 8200 30.3 19.3 157 38.7 22.4 173
Salt River Summit 7760 18.9 10.4 182 24.4 13.3 183
Snake River Station 6920 19.2 14.0 137 30.0 18.4 163
Spring Creek Divide 9000 32.4 18.0 180 -M 19.0 *
Thumb Divide 7980 19.6 11.8 166 -M 14.4 *
Togwotee Pass 9580 27.3 17.4 157 31.2 19.1 163
Two Ocean Plateau 9240 -M 21.3 * -M 21.4 *
Willow Creek 8380 28.5 21.9 130 41.4 26.4 157
Younts Peak 8350 22.0 11.5 191 24.7 12.4 199
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Basin Index (%) 154 161
MADISON-GALLATIN
Black Bear 8170 35.8 28.9 124 42.8 30.3 141
Canyon 7870 15.1 10.3 147 21.2 12.8 166
Madison Plateau 7750 21.9 17.5 125 29.7 20.8 143
West Yellowstone 6700 11.4 8.7 131 19.5 11.4 171
Whiskey Creek 6800 13.0 11.8 110 21.9 16.0 137
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Basin Index (%) 126 148
YELLOWSTONE
Beartooth Lake 9360 25.1 16.2 155 20.4 15.5 132
Burnt Mtn 5880 5.4 4.0 135 11.0 9.2 120
Canyon 7870 15.1 10.3 147 21.2 12.8 166
Cole Creek 7850 8.4 9.3 90 6.0 8.9 67
Evening Star 9200 29.8 18.9 158 33.7 21.8 155
Fisher Creek 9100 31.6 25.2 125 35.8 25.1 143
Northeast Entrance 7350 9.9 7.8 127 15.7 9.8 160
Parker Peak 9400 25.7 15.6 165 23.2 13.8 168
Sylvan Lake 8420 20.2 15.6 129 31.0 17.7 175
Thumb Divide 7980 19.6 11.8 166 -M 14.4 *
Two Ocean Plateau 9240 -M 21.3 * -M 21.4 *
White Mill 8700 24.3 18.0 135 26.0 18.7 139
Wolverine 7650 13.8 8.5 162 17.5 9.8 179
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Basin Index (%) 142 148
WIND RIVER
Burroughs Creek 8750 20.3 -M * 22.2 -M *
Castle Creek 8400 11.1 -M * 13.1 -M *
Cold Springs 9630 11.6 5.4 215 13.8 7.3 189
Deer Park 9700 27.0 10.7 252 27.9 14.9 187
Hobbs Park 10100 21.0 9.3 226 19.2 9.3 206
Kirwin 9550 15.5 6.8 228 18.0 8.6 209
Little Warm 9370 13.6 7.8 174 19.2 9.7 198
Owl Creek 8975 6.5 3.8 171 8.1 4.2 193
South Pass 9040 24.8 11.1 223 22.8 13.2 173
St. Lawrence Alt 8620 7.2 5.0 144 11.7 6.3 186
Togwotee Pass 9580 27.3 17.4 157 31.2 19.1 163
Townsend Creek 8700 12.1 6.3 192 14.9 8.5 175
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Basin Index (%) 199 185
BIGHORN BASIN
Bald Mtn. 9380 14.6 14.3 102 12.4 12.8 97
Bear Trap Meadow 8200 4.1 4.2 98 5.4 6.0 90
Bone Springs Div 9350 12.8 11.6 110 11.9 11.4 104
Grave Springs 8550 5.0 6.5 77 5.6 7.7 73
Kirwin 9550 15.5 6.8 228 18.0 8.6 209
Marquette 8760 7.1 -M * 10.9 -M *
Middle Powder 7760 5.9 7.8 76 5.4 8.6 63
Owl Creek 8975 6.5 3.8 171 8.1 4.2 193
Powder River Pass 9480 5.8 7.7 75 8.3 9.4 88
Shell Creek 9580 12.3 11.2 110 9.4 10.3 91
Timber Creek 7950 5.2 3.2 162 6.6 5.1 129
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Basin Index (%) 114 108
SHOSHONE RIVER
Blackwater 9780 29.5 16.8 176 32.8 15.8 208
Evening Star 9200 29.8 18.9 158 33.7 21.8 155
Marquette 8760 7.1 -M * 10.9 -M *
Sylvan Road 7120 14.1 9.1 155 25.3 13.7 185
Younts Peak 8350 22.0 11.5 191 24.7 12.4 199
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Basin Index (%) 169 183
POWDER RIVER
Bear Trap Meadow 8200 4.1 4.2 98 5.4 6.0 90
Cloud Peak Reservoir 9860 9.6 10.2 94 10.8 9.3 116
Grave Springs 8550 5.0 6.5 77 5.6 7.7 73
Hansen Sawmill 8360 6.6 4.6 143 8.5 5.9 144
Middle Powder 7760 5.9 7.8 76 5.4 8.6 63
Powder River Pass 9480 5.8 7.7 75 8.3 9.4 88
Soldier Park 8720 9.6 -M * 8.2 -M *
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Basin Index (%) 90 94
TONGUE RIVER
Big Goose 7990 7.0 6.1 115 7.9 7.7 103
Bone Springs Div 9350 12.8 11.6 110 11.9 11.4 104
Burgess Junction 7880 7.1 8.0 89 7.8 8.8 89
Dome Lake 8880 8.6 8.4 102 10.2 9.8 104
Little Goose 8870 7.6 -M * 9.9 -M *
Sucker Creek 8880 8.2 8.7 94 7.8 10.3 76
Tie Creek 6870 4.7 4.2 112 8.6 8.1 106
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Basin Index (%) 103 97
BELLE FOURCHE
Cole Canyon 5910 2.7 4.9 55 5.3 7.0 76
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Basin Index (%) 55 76
CHEYENNE RIVER BASIN
Blind Park 6890 4.4 6.2 71 6.5 9.2 71
North Rapid Creek 6130 3.7 5.8 64 5.4 7.4 73
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Basin Index (%) 68 72
UPPER N. PLATTE
Arapaho Ridge 10960 22.1 16.1 137 22.3 17.3 129
Blackhall Mtn 9820 31.7 -M * 30.9 -M *
Columbine 9160 22.4 19.3 116 23.4 20.0 117
Divide Peak 8880 16.9 15.3 110 19.1 16.5 116
Joe Wright 10120 16.9 16.0 106 23.6 19.6 120
Laprele Creek 8375 9.9 7.5 132 9.4 9.2 102
Med Bow 10500 32.7 -M * 29.4 -M *
North French Creek 10130 21.6 20.6 105 22.7 20.7 110
Never Summer 10280 19.7 15.8 125 16.3 -M *
Old Battle 10000 32.4 23.6 137 31.1 27.4 114
Rawah 9020 11.5 8.4 137 13.8 10.6 130
Sage Creek Basin 7850 14.1 10.5 134 14.2 11.5 123
Sand Lake 10050 24.6 20.7 119 22.6 18.6 122
South Brush Creek 8440 9.6 9.9 97 10.0 11.5 87
Tower 10500 37.6 35.6 106 37.2 31.2 119
Webber Springs 9250 25.6 18.3 140 28.9 20.8 139
Willow Creek Pass 9540 15.6 9.2 170 15.9 10.1 157
Zirkel 9340 36.3 22.6 161 36.9 23.0 160
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Basin Index (%) 125 124
SWEETWATER
Deer Park 9700 27.0 10.7 252 27.9 14.9 187
Larsen Creek 9000 17.7 9.3 190 20.1 -M *
South Pass 9040 24.8 11.1 223 22.8 13.2 173
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Basin Index (%) 223 180
LOWER N. PLATTE
Casper Mtn. 7900 8.9 9.8 91 8.4 10.9 77
Laprele Creek 8375 9.9 7.5 132 9.4 9.2 102
Reno Hill 8400 9.6 9.6 100 9.5 10.9 87
Windy Peak 7900 8.8 5.7 154 9.0 7.7 117
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Basin Index (%) 114 94
LARAMIE RIVER
Brooklyn Lake 10240 21.2 14.7 144 18.9 15.8 120
Cinnabar Park 9574 16.6 16.7 99 18.8 19.4 97
Crow Creek 8330 4.8 6.6 73 7.3 7.7 95
Deadman Hill 10220 17.4 12.3 141 16.3 12.5 130
Rawah 9020 11.5 8.4 137 13.8 10.6 130
Roach 9700 14.8 12.2 121 17.3 14.4 120
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Basin Index (%) 122 115
S. PLATTE
Black Mountain 8920 8.7 -M * 9.8 -M *
Crow Creek 8330 4.8 6.6 73 7.3 7.7 95
Deadman Hill 10220 17.4 12.3 141 16.3 12.5 130
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Basin Index (%) 117 117
LITTLE SNAKE RIVER
Battle Mountain 7440 10.0 9.7 103 14.0 11.9 118
Divide Peak 8880 16.9 15.3 110 19.1 16.5 116
Elk River 8700 18.1 14.9 121 17.6 15.7 112
Little Snake River 8915 28.8 19.5 148 33.2 24.7 134
Old Battle 10000 32.4 23.6 137 31.1 27.4 114
Sage Creek Basin 7850 14.1 10.5 134 14.2 11.5 123
Sandstone RS 8150 11.7 10.3 114 14.0 14.9 94
Whiskey Park 8950 23.8 20.8 114 25.5 22.0 116
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Basin Index (%) 125 117
UPPER GREEN RIVER
Big Sandy Opening 9080 18.4 9.8 188 20.4 10.3 198
Blind Bull Sum 8650 36.1 17.5 206 -M 15.7 *
East Rim Divide 7930 16.9 7.8 217 18.4 9.4 196
Elkhart Park G.S. 9400 15.7 9.2 171 20.5 10.3 199
Gros Ventre Summit 8750 16.6 9.5 175 -M 9.9 *
Gunsight Pass 9820 17.5 10.4 168 20.3 10.6 192
Kendall R.S. 7740 20.2 9.6 210 24.1 11.5 210
Loomis Park 8240 23.7 11.5 206 27.1 13.8 196
New Fork Lake 8340 14.8 8.0 185 14.9 8.6 173
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.4 9.4 196 23.5 11.3 208
Spring Creek Divide 9000 32.4 18.0 180 -M 19.0 *
Triple Peak 8500 32.2 16.5 195 33.7 19.9 169
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Basin Index (%) 192 192
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.7 -M * 12.5 -M *
Buck Pasture 9632 16.5 -M * 19.1 -M *
EF Blacks Fork GS 9360 13.7 -M * -M -M *
Hams Fork 7840 15.6 9.0 173 17.4 9.0 193
Hewinta 9500 10.9 7.6 143 13.0 10.6 123
Hickerson Park 9122 7.7 5.6 138 7.5 7.4 101
Hole-in-Rock 9168 6.2 5.4 115 8.2 6.9 119
Indian Creek 9425 33.2 18.3 181 -M 17.5 *
Kelley R.S. 8180 23.3 11.7 199 26.7 14.4 185
Spirit Lk 10235 13.2 -M * 14.0 -M *
Steel Creek Park 10158 14.0 11.2 125 15.8 12.1 131
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Basin Index (%) 161 147
UPPER BEAR RIVER
Bear River RS 8777 11.6 -M * 14.1 -M *
Bug Lake 7987 -M 14.4 * -M 15.2 *
Burts Miller Ranch 8000 7.1 -M * 7.3 -M *
Chalk Creek #1 9171 29.0 17.8 163 28.0 19.1 147
Hayden Fork 9130 20.4 11.7 174 -M 16.1 *
Kelley R.S. 8180 23.3 11.7 199 26.7 14.4 185
Lily Lake 9133 13.4 9.9 135 15.8 13.0 122
Monte Cristo 8932 30.5 20.2 151 29.5 20.2 146
Salt River Summit 7760 18.9 10.4 182 24.4 13.3 183
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Basin Index (%) 166 156
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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.