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 SATURDAY: FEBRUARY 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 21.8 12.9 169 30.3 16.0 189
Black Bear 8170 30.4 27.5 111 39.2 28.4 138
Blind Bull Sum 8650 33.0 16.5 200 -M 14.8 *
Cottonwood Creek 7670 21.6 15.2 142 29.0 18.1 160
East Rim Divide 7930 15.6 7.4 211 17.4 8.7 200
Grand Targhee 9260 33.1 27.2 122 30.8 23.5 131
Granite Creek 6770 23.3 12.8 182 26.5 15.3 173
Grassy Lake 7265 29.4 24.5 120 42.0 27.5 153
Gros Ventre Summit 8750 14.1 9.1 155 18.4 9.3 198
Gunsight Pass 9820 15.8 9.8 161 19.0 10.1 188
Lewis Lake Divide 7850 29.3 23.7 124 41.0 26.7 154
Phillips Bench 8200 26.9 18.2 148 36.6 21.0 174
Salt River Summit 7760 16.9 9.6 176 22.6 12.3 184
Snake River Station 6920 17.5 13.4 131 28.5 17.5 163
Spring Creek Divide 9000 28.8 16.6 173 29.6 17.8 166
Thumb Divide 7980 17.2 11.0 156 21.0 13.6 154
Togwotee Pass 9580 24.8 16.7 149 28.6 18.0 159
Two Ocean Plateau 9240 -M 19.8 * -M 20.0 *
Willow Creek 8380 26.7 20.0 134 37.5 24.6 152
Younts Peak 8350 19.9 11.1 179 23.5 11.8 199
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Basin Index (%) 147 163
MADISON-GALLATIN
Black Bear 8170 30.4 27.5 111 39.2 28.4 138
Canyon 7870 13.6 9.6 142 20.3 12.2 166
Madison Plateau 7750 19.0 16.1 118 27.6 19.4 142
West Yellowstone 6700 10.2 7.9 129 18.2 10.9 167
Whiskey Creek 6800 12.1 11.1 109 20.3 15.0 135
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Basin Index (%) 118 146
YELLOWSTONE
Beartooth Lake 9360 23.7 15.5 153 19.6 14.6 134
Burnt Mtn 5880 4.9 3.7 132 10.1 8.9 113
Canyon 7870 13.6 9.6 142 20.3 12.2 166
Cole Creek 7850 7.4 8.9 83 5.7 8.5 67
Evening Star 9200 27.6 18.0 153 -M 20.5 *
Fisher Creek 9100 29.1 23.9 122 33.5 23.6 142
Northeast Entrance 7350 9.2 7.5 123 15.1 9.3 162
Parker Peak 9400 24.0 14.4 167 23.4 12.9 181
Sylvan Lake 8420 18.1 14.6 124 29.2 16.7 175
Thumb Divide 7980 17.2 11.0 156 21.0 13.6 154
Two Ocean Plateau 9240 -M 19.8 * -M 20.0 *
White Mill 8700 22.7 16.6 137 24.9 17.7 141
Wolverine 7650 13.8 8.1 170 16.9 9.3 182
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Basin Index (%) 139 149
WIND RIVER
Burroughs Creek 8750 18.4 -M * 20.8 -M *
Castle Creek 8400 10.0 -M * 12.3 -M *
Cold Springs 9630 9.3 5.3 175 11.8 6.9 171
Deer Park 9700 23.3 10.0 233 26.4 14.1 187
Hobbs Park 10100 16.7 8.8 190 15.6 8.8 177
Kirwin 9550 14.1 6.2 227 17.1 8.1 211
Little Warm 9370 11.4 7.5 152 17.0 9.1 187
Owl Creek 8975 5.6 3.4 165 7.2 4.0 180
South Pass 9040 21.7 10.4 209 20.2 12.5 162
St. Lawrence Alt 8620 5.0 4.7 106 9.4 6.0 157
Togwotee Pass 9580 24.8 16.7 149 28.6 18.0 159
Townsend Creek 8700 8.6 5.9 146 11.9 8.1 147
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Basin Index (%) 178 173
BIGHORN BASIN
Bald Mtn. 9380 13.9 13.3 105 12.3 12.0 102
Bear Trap Meadow 8200 3.9 3.9 100 5.2 5.7 91
Bone Springs Div 9350 11.7 11.0 106 11.8 10.8 109
Grave Springs 8550 4.5 5.7 79 4.9 7.3 67
Kirwin 9550 14.1 6.2 227 17.1 8.1 211
Marquette 8760 6.2 -M * 9.9 -M *
Middle Powder 7760 5.0 7.2 69 5.6 8.2 68
Owl Creek 8975 5.6 3.4 165 7.2 4.0 180
Powder River Pass 9480 5.0 7.3 68 8.0 8.8 91
Shell Creek 9580 11.6 10.3 113 9.2 9.8 94
Timber Creek 7950 4.4 3.1 142 5.8 4.9 118
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Basin Index (%) 112 109
SHOSHONE RIVER
Blackwater 9780 27.4 15.9 172 30.9 15.0 206
Evening Star 9200 27.6 18.0 153 -M 20.5 *
Marquette 8760 6.2 -M * 9.9 -M *
Sylvan Road 7120 13.2 8.7 152 24.3 13.1 185
Younts Peak 8350 19.9 11.1 179 23.5 11.8 199
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Basin Index (%) 164 197
POWDER RIVER
Bear Trap Meadow 8200 3.9 3.9 100 5.2 5.7 91
Cloud Peak Reservoir 9860 8.7 9.7 90 10.5 8.8 119
Grave Springs 8550 4.5 5.7 79 4.9 7.3 67
Hansen Sawmill 8360 6.0 4.4 136 7.9 5.6 141
Middle Powder 7760 5.0 7.2 69 5.6 8.2 68
Powder River Pass 9480 5.0 7.3 68 8.0 8.8 91
Soldier Park 8720 9.2 -M * 7.8 -M *
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Basin Index (%) 87 95
TONGUE RIVER
Big Goose 7990 6.4 5.8 110 7.4 7.4 100
Bone Springs Div 9350 11.7 11.0 106 11.8 10.8 109
Burgess Junction 7880 7.0 7.5 93 8.1 8.4 96
Dome Lake 8880 8.1 7.9 103 9.5 9.3 102
Little Goose 8870 6.9 -M * 9.2 -M *
Sucker Creek 8880 7.7 8.1 95 8.0 9.8 82
Tie Creek 6870 4.2 4.0 105 7.9 7.9 100
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Basin Index (%) 102 98
BELLE FOURCHE
Cole Canyon 5910 3.1 4.6 67 4.7 6.7 70
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Basin Index (%) 67 70
CHEYENNE RIVER BASIN
Blind Park 6890 4.5 5.7 79 5.9 8.8 67
North Rapid Creek 6130 4.4 5.4 81 5.2 7.1 73
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Basin Index (%) 80 70
UPPER N. PLATTE
Arapaho Ridge 10960 21.5 15.1 142 21.9 16.3 134
Blackhall Mtn 9820 30.1 -M * 29.8 -M *
Columbine 9160 21.6 17.8 121 23.4 18.8 124
Divide Peak 8880 15.6 14.3 109 17.9 15.7 114
Joe Wright 10120 16.2 15.0 108 23.0 18.3 126
Laprele Creek 8375 9.2 6.8 135 8.6 8.6 100
Med Bow 10500 30.0 -M * 27.6 -M *
North French Creek 10130 19.3 19.4 99 20.5 19.4 106
Never Summer 10280 18.7 14.4 130 15.5 -M *
Old Battle 10000 29.9 22.4 133 31.2 25.9 120
Rawah 9020 11.0 7.5 147 13.7 10.0 137
Sage Creek Basin 7850 12.8 10.0 128 12.8 11.1 115
Sand Lake 10050 22.6 19.0 119 21.3 17.4 122
South Brush Creek 8440 8.3 8.8 94 9.6 10.7 90
Tower 10500 35.7 33.2 108 37.4 29.3 128
Webber Springs 9250 23.9 17.0 141 27.7 19.5 142
Willow Creek Pass 9540 15.1 8.7 174 16.0 9.5 168
Zirkel 9340 34.8 21.3 163 35.9 21.7 165
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Basin Index (%) 126 127
SWEETWATER
Deer Park 9700 23.3 10.0 233 26.4 14.1 187
Larsen Creek 9000 16.5 8.6 192 18.9 -M *
South Pass 9040 21.7 10.4 209 20.2 12.5 162
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Basin Index (%) 212 175
LOWER N. PLATTE
Casper Mtn. 7900 7.7 9.2 84 7.6 10.3 74
Laprele Creek 8375 9.2 6.8 135 8.6 8.6 100
Reno Hill 8400 8.6 9.0 96 9.2 10.3 89
Windy Peak 7900 7.2 5.2 138 7.8 7.3 107
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Basin Index (%) 108 91
LARAMIE RIVER
Brooklyn Lake 10240 19.5 14.1 138 17.6 14.8 119
Cinnabar Park 9574 15.0 16.0 94 17.7 18.5 96
Crow Creek 8330 3.6 6.5 55 6.2 7.3 85
Deadman Hill 10220 16.4 11.6 141 15.9 11.7 136
Rawah 9020 11.0 7.5 147 13.7 10.0 137
Roach 9700 14.0 11.7 120 16.6 13.5 123
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Basin Index (%) 118 116
S. PLATTE
Black Mountain 8920 7.6 -M * 8.8 -M *
Crow Creek 8330 3.6 6.5 55 6.2 7.3 85
Deadman Hill 10220 16.4 11.6 141 15.9 11.7 136
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Basin Index (%) 110 116
LITTLE SNAKE RIVER
Battle Mountain 7440 8.8 8.8 100 12.7 11.2 113
Divide Peak 8880 15.6 14.3 109 17.9 15.7 114
Elk River 8700 16.9 13.9 122 16.8 14.8 114
Little Snake River 8915 26.4 18.5 143 32.1 23.5 137
Old Battle 10000 29.9 22.4 133 31.2 25.9 120
Sage Creek Basin 7850 12.8 10.0 128 12.8 11.1 115
Sandstone RS 8150 10.7 10.0 107 13.0 13.9 94
Whiskey Park 8950 22.4 19.5 115 24.0 20.8 115
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Basin Index (%) 122 117
UPPER GREEN RIVER
Big Sandy Opening 9080 17.5 9.1 192 19.4 9.6 202
Blind Bull Sum 8650 33.0 16.5 200 -M 14.8 *
East Rim Divide 7930 15.6 7.4 211 17.4 8.7 200
Elkhart Park G.S. 9400 14.3 8.7 164 19.0 9.6 198
Gros Ventre Summit 8750 14.1 9.1 155 18.4 9.3 198
Gunsight Pass 9820 15.8 9.8 161 19.0 10.1 188
Kendall R.S. 7740 18.7 9.1 205 22.7 10.6 214
Loomis Park 8240 21.8 10.7 204 26.1 12.9 202
New Fork Lake 8340 14.0 7.6 184 14.3 8.0 179
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 16.0 9.1 176 21.6 10.6 204
Spring Creek Divide 9000 28.8 16.6 173 29.6 17.8 166
Triple Peak 8500 30.0 15.6 192 31.2 18.3 170
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Basin Index (%) 185 190
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.8 -M * 11.4 -M *
Buck Pasture 9632 15.2 -M * 17.5 -M *
EF Blacks Fork GS 9360 12.4 -M * -M -M *
Hams Fork 7840 14.1 8.5 166 16.1 8.4 192
Hewinta 9519 9.8 7.0 140 11.7 9.9 118
Hickerson Park 9145 6.5 5.2 125 6.8 7.0 97
Hole-in-Rock 9150 5.3 4.8 110 7.3 6.6 111
Indian Creek 9425 29.1 16.8 173 -M 16.4 *
Kelley R.S. 8180 20.8 10.8 193 24.2 13.4 181
Spirit Lk 10235 10.8 -M * 12.1 -M *
Steel Creek Park 10200 12.6 10.4 121 14.2 11.4 125
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Basin Index (%) 155 142
UPPER BEAR RIVER
Bear River RS 8777 10.5 -M * 12.9 -M *
Bug Lake 7950 25.5 13.4 190 24.5 14.3 171
Burts Miller Ranch 8000 5.5 -M * 6.7 -M *
Chalk Creek #1 8993 26.0 16.3 160 27.0 18.0 150
Hayden Fork 9212 17.8 11.2 159 22.7 15.1 150
Kelley R.S. 8180 20.8 10.8 193 24.2 13.4 181
Lily Lake 9156 12.5 9.2 136 14.4 12.2 118
Monte Cristo 8960 26.8 19.1 140 25.6 18.8 136
Salt River Summit 7760 16.9 9.6 176 22.6 12.3 184
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Basin Index (%) 163 155
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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.