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: FEBRUARY 23 , 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 13.1 180 31.5 16.7 189
Black Bear 8170 35.0 28.3 124 42.4 29.6 143
Blind Bull Sum 8650 35.7 17.3 206 -M 15.4 *
Cottonwood Creek 7670 23.3 16.0 146 30.5 18.8 162
East Rim Divide 7930 17.0 7.6 224 18.4 9.2 200
Grand Targhee 9260 35.1 28.3 124 31.9 23.9 133
Granite Creek 6770 27.4 13.1 209 -M 15.9 *
Grassy Lake 7265 31.2 25.1 124 42.6 28.6 149
Gros Ventre Summit 8750 16.6 9.4 177 18.9 9.7 195
Gunsight Pass 9820 17.5 10.1 173 20.4 10.4 196
Lewis Lake Divide 7850 32.6 24.8 131 41.5 27.8 149
Phillips Bench 8200 30.4 19.0 160 38.6 21.9 176
Salt River Summit 7760 -M 10.2 * -M 12.9 *
Snake River Station 6920 19.3 13.7 141 30.0 18.0 167
Spring Creek Divide 9000 31.4 17.5 179 -M 18.6 *
Thumb Divide 7980 19.8 11.4 174 -M 14.1 *
Togwotee Pass 9580 26.8 17.1 157 30.9 18.7 165
Two Ocean Plateau 9240 -M 20.8 * -M 20.9 *
Willow Creek 8380 27.9 21.3 131 40.1 25.8 155
Younts Peak 8350 21.9 11.3 194 24.9 12.2 204
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Basin Index (%) 155 163
MADISON-GALLATIN
Black Bear 8170 35.0 28.3 124 42.4 29.6 143
Canyon 7870 14.9 10.1 148 21.2 12.6 168
Madison Plateau 7750 21.8 17.2 127 29.7 20.3 146
West Yellowstone 6700 11.6 8.4 138 19.4 11.2 173
Whiskey Creek 6800 13.2 11.5 115 21.9 15.7 139
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Basin Index (%) 128 151
YELLOWSTONE
Beartooth Lake 9360 25.0 16.0 156 20.5 15.1 136
Burnt Mtn 5880 5.2 3.9 133 10.6 9.0 118
Canyon 7870 14.9 10.1 148 21.2 12.6 168
Cole Creek 7850 7.9 9.1 87 5.9 8.7 68
Evening Star 9200 29.7 18.6 160 35.4 21.4 165
Fisher Creek 9100 31.5 24.9 127 35.7 24.6 145
Northeast Entrance 7350 9.7 7.6 128 15.6 9.6 162
Parker Peak 9400 25.5 15.2 168 23.4 13.5 173
Sylvan Lake 8420 20.0 15.3 131 31.0 17.3 179
Thumb Divide 7980 19.8 11.4 174 -M 14.1 *
Two Ocean Plateau 9240 -M 20.8 * -M 20.9 *
White Mill 8700 24.1 17.7 136 26.0 18.4 141
Wolverine 7650 14.0 8.4 167 17.4 9.6 181
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Basin Index (%) 144 152
WIND RIVER
Burroughs Creek 8750 20.1 -M * 22.0 -M *
Castle Creek 8400 10.9 -M * 13.1 -M *
Cold Springs 9630 10.2 5.4 189 12.4 7.2 172
Deer Park 9700 24.9 10.4 239 27.6 14.5 190
Hobbs Park 10100 18.8 9.1 207 17.0 9.0 189
Kirwin 9550 15.3 6.6 232 18.1 8.4 215
Little Warm 9370 13.0 7.7 169 18.7 9.4 199
Owl Creek 8975 6.1 3.7 165 7.8 4.1 190
South Pass 9040 22.9 10.8 212 20.7 12.9 160
St. Lawrence Alt 8620 5.9 5.0 118 10.5 6.2 169
Togwotee Pass 9580 26.8 17.1 157 30.9 18.7 165
Townsend Creek 8700 9.6 6.1 157 12.6 8.3 152
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Basin Index (%) 187 179
BIGHORN BASIN
Bald Mtn. 9380 14.2 14.0 101 12.4 12.5 99
Bear Trap Meadow 8200 4.1 4.1 100 5.3 5.9 90
Bone Springs Div 9350 12.1 11.3 107 12.0 11.2 107
Grave Springs 8550 4.7 6.2 76 5.1 7.5 68
Kirwin 9550 15.3 6.6 232 18.1 8.4 215
Marquette 8760 6.5 -M * 10.2 -M *
Middle Powder 7760 5.3 7.5 71 5.5 8.3 66
Owl Creek 8975 6.1 3.7 165 7.8 4.1 190
Powder River Pass 9480 5.6 7.6 74 8.4 9.2 91
Shell Creek 9580 12.1 10.8 112 9.4 10.1 93
Timber Creek 7950 4.6 3.1 148 6.0 5.0 120
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Basin Index (%) 112 109
SHOSHONE RIVER
Blackwater 9780 29.5 16.6 178 32.9 15.5 212
Evening Star 9200 29.7 18.6 160 35.4 21.4 165
Marquette 8760 6.5 -M * 10.2 -M *
Sylvan Road 7120 14.1 8.9 158 25.3 13.5 187
Younts Peak 8350 21.9 11.3 194 24.9 12.2 204
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Basin Index (%) 172 189
POWDER RIVER
Bear Trap Meadow 8200 4.1 4.1 100 5.3 5.9 90
Cloud Peak Reservoir 9860 9.3 10.0 93 10.7 9.2 116
Grave Springs 8550 4.7 6.2 76 5.1 7.5 68
Hansen Sawmill 8360 6.4 4.4 145 8.2 5.8 141
Middle Powder 7760 5.3 7.5 71 5.5 8.3 66
Powder River Pass 9480 5.6 7.6 74 8.4 9.2 91
Soldier Park 8720 9.3 -M * 8.0 -M *
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Basin Index (%) 89 94
TONGUE RIVER
Big Goose 7990 6.7 6.0 112 7.5 7.6 99
Bone Springs Div 9350 12.1 11.3 107 12.0 11.2 107
Burgess Junction 7880 7.0 7.8 90 8.2 8.6 95
Dome Lake 8880 8.5 8.2 104 9.9 9.6 103
Little Goose 8870 7.4 -M * 9.7 -M *
Sucker Creek 8880 8.1 8.5 95 8.0 10.0 80
Tie Creek 6870 4.1 4.2 98 8.1 8.0 101
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Basin Index (%) 101 98
BELLE FOURCHE
Cole Canyon 5910 2.7 4.8 56 4.8 6.8 71
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Basin Index (%) 56 71
CHEYENNE RIVER BASIN
Blind Park 6890 4.5 6.0 75 6.3 9.0 70
North Rapid Creek 6130 4.4 5.7 77 5.4 7.2 75
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Basin Index (%) 76 72
UPPER N. PLATTE
Arapaho Ridge 10960 21.7 15.7 138 22.0 16.9 130
Blackhall Mtn 9820 31.3 -M * 30.5 -M *
Columbine 9160 21.8 18.8 116 23.5 19.5 121
Divide Peak 8880 16.7 15.1 111 18.7 16.3 115
Joe Wright 10120 16.6 15.6 106 23.4 19.1 123
Laprele Creek 8375 9.5 7.3 130 8.7 9.0 97
Med Bow 10500 31.7 -M * 28.8 -M *
North French Creek 10130 21.0 20.0 105 22.0 20.2 109
Never Summer 10280 19.2 15.2 126 15.8 -M *
Old Battle 10000 31.6 23.2 136 31.3 27.0 116
Rawah 9020 10.8 8.0 135 13.8 10.3 134
Sage Creek Basin 7850 13.7 10.4 132 13.7 11.4 120
Sand Lake 10050 23.7 20.1 118 21.9 18.2 120
South Brush Creek 8440 9.6 9.5 101 10.0 11.2 89
Tower 10500 36.6 35.0 105 37.4 30.6 122
Webber Springs 9250 25.3 17.9 141 28.6 20.3 141
Willow Creek Pass 9540 15.3 9.1 168 16.2 9.9 164
Zirkel 9340 36.1 22.3 162 36.8 22.5 164
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Basin Index (%) 125 125
SWEETWATER
Deer Park 9700 24.9 10.4 239 27.6 14.5 190
Larsen Creek 9000 17.4 9.0 193 19.7 -M *
South Pass 9040 22.9 10.8 212 20.7 12.9 160
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Basin Index (%) 216 176
LOWER N. PLATTE
Casper Mtn. 7900 8.0 9.6 83 7.5 10.6 71
Laprele Creek 8375 9.5 7.3 130 8.7 9.0 97
Reno Hill 8400 9.0 9.4 96 9.3 10.6 88
Windy Peak 7900 8.0 5.5 145 8.1 7.5 108
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Basin Index (%) 108 89
LARAMIE RIVER
Brooklyn Lake 10240 20.1 14.5 139 17.8 15.4 116
Cinnabar Park 9574 15.7 16.4 96 18.2 19.1 95
Crow Creek 8330 4.0 6.6 61 6.6 7.6 87
Deadman Hill 10220 16.9 12.1 140 16.0 12.2 131
Rawah 9020 10.8 8.0 135 13.8 10.3 134
Roach 9700 14.6 12.1 121 17.1 14.1 121
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Basin Index (%) 118 114
S. PLATTE
Black Mountain 8920 8.0 -M * 9.1 -M *
Crow Creek 8330 4.0 6.6 61 6.6 7.6 87
Deadman Hill 10220 16.9 12.1 140 16.0 12.2 131
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Basin Index (%) 112 114
LITTLE SNAKE RIVER
Battle Mountain 7440 9.3 9.3 100 13.5 11.7 115
Divide Peak 8880 16.7 15.1 111 18.7 16.3 115
Elk River 8700 17.9 14.5 123 17.3 15.4 112
Little Snake River 8915 27.9 19.2 145 33.2 24.3 137
Old Battle 10000 31.6 23.2 136 31.3 27.0 116
Sage Creek Basin 7850 13.7 10.4 132 13.7 11.4 120
Sandstone RS 8150 11.4 10.3 111 13.6 14.6 93
Whiskey Park 8950 23.8 20.3 117 25.0 21.6 116
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Basin Index (%) 125 117
UPPER GREEN RIVER
Big Sandy Opening 9080 18.8 9.5 198 20.5 10.0 205
Blind Bull Sum 8650 35.7 17.3 206 -M 15.4 *
East Rim Divide 7930 17.0 7.6 224 18.4 9.2 200
Elkhart Park G.S. 9400 15.9 9.0 177 20.3 10.0 203
Gros Ventre Summit 8750 16.6 9.4 177 18.9 9.7 195
Gunsight Pass 9820 17.5 10.1 173 20.4 10.4 196
Kendall R.S. 7740 20.3 9.5 214 -M 11.2 *
Loomis Park 8240 23.6 11.3 209 26.9 13.5 199
New Fork Lake 8340 14.8 7.8 190 14.9 8.4 177
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 17.9 9.2 195 23.0 11.1 207
Spring Creek Divide 9000 31.4 17.5 179 -M 18.6 *
Triple Peak 8500 32.1 16.2 198 33.4 19.4 172
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Basin Index (%) 195 193
LOWER GREEN RIVER
Blacks Fork Jct 8869 9.8 -M * 12.4 -M *
Buck Pasture 9632 16.4 -M * 18.9 -M *
EF Blacks Fork GS 9360 13.6 -M * 12.9 -M *
Hams Fork 7840 15.2 8.8 173 16.7 8.8 190
Hewinta 9500 10.4 7.4 141 12.8 10.4 123
Hickerson Park 9122 7.5 5.5 136 7.7 7.3 105
Hole-in-Rock 9168 6.2 5.2 119 8.3 6.8 122
Indian Creek 9425 32.1 17.8 180 -M 17.1 *
Kelley R.S. 8180 22.3 11.3 197 25.8 14.0 184
Spirit Lk 10235 12.8 -M * 13.8 -M *
Steel Creek Park 10158 14.0 10.9 128 15.3 11.9 129
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Basin Index (%) 161 146
UPPER BEAR RIVER
Bear River RS 8777 11.4 -M * 13.9 -M *
Bug Lake 7987 27.0 14.1 191 27.2 15.0 181
Burts Miller Ranch 8000 6.8 -M * 7.6 -M *
Chalk Creek #1 9171 28.2 17.3 163 28.9 18.8 154
Hayden Fork 9130 19.9 11.5 173 -M 15.7 *
Kelley R.S. 8180 22.3 11.3 197 25.8 14.0 184
Lily Lake 9133 13.3 9.8 136 15.5 12.7 122
Monte Cristo 8932 29.7 19.8 150 29.3 19.7 149
Salt River Summit 7760 -M 10.2 * -M 12.9 *
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Basin Index (%) 168 158
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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.