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 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 21.8 12.9 169 30.5 16.2 188
Black Bear 8170 31.1 27.6 113 39.8 28.7 139
Blind Bull Sum 8650 33.3 16.7 199 -M 14.9 *
Cottonwood Creek 7670 21.8 15.4 142 29.2 18.2 160
East Rim Divide 7930 15.7 7.5 209 17.5 8.8 199
Grand Targhee 9260 33.6 27.4 123 31.0 23.6 131
Granite Creek 6770 23.8 12.9 184 26.5 15.4 172
Grassy Lake 7265 29.5 24.6 120 42.1 27.7 152
Gros Ventre Summit 8750 -M 9.1 * -M 9.4 *
Gunsight Pass 9820 15.9 9.8 162 19.1 10.2 187
Lewis Lake Divide 7850 29.6 23.9 124 41.0 27.0 152
Phillips Bench 8200 28.1 18.4 153 37.7 21.2 178
Salt River Summit 7760 17.0 9.7 175 22.7 12.5 182
Snake River Station 6920 17.6 13.5 130 28.6 17.6 162
Spring Creek Divide 9000 29.2 16.8 174 29.7 18.0 165
Thumb Divide 7980 17.7 11.0 161 21.3 13.7 155
Togwotee Pass 9580 25.0 16.7 150 29.0 18.1 160
Two Ocean Plateau 9240 -M 20.0 * -M 20.2 *
Willow Creek 8380 26.6 20.2 132 37.9 24.9 152
Younts Peak 8350 20.0 11.1 180 23.6 11.9 198
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Basin Index (%) 148 162
MADISON-GALLATIN
Black Bear 8170 31.1 27.6 113 39.8 28.7 139
Canyon 7870 13.7 9.7 141 20.3 12.3 165
Madison Plateau 7750 19.6 16.3 120 28.0 19.6 143
West Yellowstone 6700 -M 8.0 * -M 11.0 *
Whiskey Creek 6800 12.3 11.2 110 20.4 15.2 134
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Basin Index (%) 118 143
YELLOWSTONE
Beartooth Lake 9360 23.8 15.6 153 19.7 14.8 133
Burnt Mtn 5880 4.8 3.7 130 10.1 8.9 113
Canyon 7870 13.7 9.7 141 20.3 12.3 165
Cole Creek 7850 7.4 8.9 83 5.8 8.5 68
Evening Star 9200 27.8 18.1 154 -M 20.7 *
Fisher Creek 9100 29.3 24.1 122 33.5 23.8 141
Northeast Entrance 7350 9.3 7.5 124 15.2 9.4 162
Parker Peak 9400 24.1 14.6 165 23.4 13.1 179
Sylvan Lake 8420 18.3 14.7 124 29.4 16.8 175
Thumb Divide 7980 17.7 11.0 161 21.3 13.7 155
Two Ocean Plateau 9240 -M 20.0 * -M 20.2 *
White Mill 8700 22.9 16.8 136 24.9 17.8 140
Wolverine 7650 13.8 8.2 168 17.0 9.3 183
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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 * 12.2 -M *
Cold Springs 9630 9.3 5.3 175 11.8 7.0 169
Deer Park 9700 23.2 10.1 230 26.9 14.2 189
Hobbs Park 10100 16.6 8.9 187 15.7 8.8 178
Kirwin 9550 14.1 6.3 224 17.2 8.2 210
Little Warm 9370 11.4 7.6 150 17.0 9.2 185
Owl Creek 8975 5.6 3.5 160 7.2 4.0 180
South Pass 9040 21.7 10.5 207 20.2 12.6 160
St. Lawrence Alt 8620 5.0 4.8 104 9.4 6.0 157
Togwotee Pass 9580 25.0 16.7 150 29.0 18.1 160
Townsend Creek 8700 8.7 6.0 145 11.9 8.1 147
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Basin Index (%) 176 173
BIGHORN BASIN
Bald Mtn. 9380 14.0 13.5 104 12.4 12.1 102
Bear Trap Meadow 8200 3.8 3.9 97 5.2 5.8 90
Bone Springs Div 9350 11.8 11.1 106 11.8 10.9 108
Grave Springs 8550 4.5 5.8 78 4.9 7.3 67
Kirwin 9550 14.1 6.3 224 17.2 8.2 210
Marquette 8760 6.2 -M * 9.8 -M *
Middle Powder 7760 5.0 7.3 68 5.6 8.2 68
Owl Creek 8975 5.6 3.5 160 7.2 4.0 180
Powder River Pass 9480 5.0 7.4 68 8.0 8.9 90
Shell Creek 9580 11.7 10.4 112 9.3 9.8 95
Timber Creek 7950 4.4 3.1 142 5.8 4.9 118
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Basin Index (%) 111 109
SHOSHONE RIVER
Blackwater 9780 27.5 16.0 172 30.9 15.1 205
Evening Star 9200 27.8 18.1 154 -M 20.7 *
Marquette 8760 6.2 -M * 9.8 -M *
Sylvan Road 7120 13.0 8.8 148 24.2 13.2 183
Younts Peak 8350 20.0 11.1 180 23.6 11.9 198
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Basin Index (%) 164 196
POWDER RIVER
Bear Trap Meadow 8200 3.8 3.9 97 5.2 5.8 90
Cloud Peak Reservoir 9860 8.8 9.8 90 10.5 8.9 118
Grave Springs 8550 4.5 5.8 78 4.9 7.3 67
Hansen Sawmill 8360 6.1 4.4 139 7.9 5.6 141
Middle Powder 7760 5.0 7.3 68 5.6 8.2 68
Powder River Pass 9480 5.0 7.4 68 8.0 8.9 90
Soldier Park 8720 9.3 -M * 7.9 -M *
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Basin Index (%) 86 94
TONGUE RIVER
Big Goose 7990 6.5 5.9 110 7.4 7.5 99
Bone Springs Div 9350 11.8 11.1 106 11.8 10.9 108
Burgess Junction 7880 7.0 7.6 92 8.2 8.5 96
Dome Lake 8880 8.2 8.0 102 9.5 9.4 101
Little Goose 8870 6.9 -M * 9.2 -M *
Sucker Creek 8880 7.7 8.2 94 8.1 9.8 83
Tie Creek 6870 4.2 4.0 105 7.9 7.9 100
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Basin Index (%) 101 98
BELLE FOURCHE
Cole Canyon 5910 3.1 4.6 67 4.8 6.7 72
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Basin Index (%) 67 72
CHEYENNE RIVER BASIN
Blind Park 6890 4.5 5.8 78 5.9 8.8 67
North Rapid Creek 6130 4.4 5.5 80 5.2 7.2 72
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Basin Index (%) 79 69
UPPER N. PLATTE
Arapaho Ridge 10960 21.5 15.2 141 21.9 16.4 134
Blackhall Mtn 9820 30.2 -M * 29.9 -M *
Columbine 9160 21.5 18.0 119 23.3 19.0 123
Divide Peak 8880 15.6 14.5 108 17.9 15.8 113
Joe Wright 10120 16.2 15.1 107 23.0 18.4 125
Laprele Creek 8375 9.2 6.9 133 8.6 8.7 99
Med Bow 10500 30.0 -M * 27.6 -M *
North French Creek 10130 19.4 19.5 99 20.5 19.6 105
Never Summer 10280 18.8 14.5 130 15.5 -M *
Old Battle 10000 30.0 22.6 133 31.3 26.2 119
Rawah 9020 10.9 7.6 143 13.7 10.1 136
Sage Creek Basin 7850 13.2 10.1 131 12.8 11.2 114
Sand Lake 10050 22.7 19.2 118 21.3 17.6 121
South Brush Creek 8440 8.4 8.9 94 9.6 10.8 89
Tower 10500 35.8 33.6 107 37.3 29.6 126
Webber Springs 9250 24.2 17.2 141 27.8 19.7 141
Willow Creek Pass 9540 15.1 8.8 172 16.0 9.5 168
Zirkel 9340 35.0 21.5 163 36.0 21.9 164
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Basin Index (%) 125 126
SWEETWATER
Deer Park 9700 23.2 10.1 230 26.9 14.2 189
Larsen Creek 9000 16.6 8.7 191 18.9 -M *
South Pass 9040 21.7 10.5 207 20.2 12.6 160
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Basin Index (%) 210 176
LOWER N. PLATTE
Casper Mtn. 7900 7.8 9.3 84 7.6 10.4 73
Laprele Creek 8375 9.2 6.9 133 8.6 8.7 99
Reno Hill 8400 8.6 9.1 95 9.3 10.4 89
Windy Peak 7900 7.3 5.3 138 7.8 7.3 107
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Basin Index (%) 108 90
LARAMIE RIVER
Brooklyn Lake 10240 19.5 14.2 137 17.6 14.9 118
Cinnabar Park 9574 15.1 16.1 94 17.7 18.7 95
Crow Creek 8330 3.6 6.5 55 6.2 7.4 84
Deadman Hill 10220 16.4 11.7 140 15.9 11.8 135
Rawah 9020 10.9 7.6 143 13.7 10.1 136
Roach 9700 14.0 11.8 119 16.7 13.6 123
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Basin Index (%) 117 115
S. PLATTE
Black Mountain 8920 7.6 -M * 8.8 -M *
Crow Creek 8330 3.6 6.5 55 6.2 7.4 84
Deadman Hill 10220 16.4 11.7 140 15.9 11.8 135
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Basin Index (%) 110 115
LITTLE SNAKE RIVER
Battle Mountain 7440 9.1 8.8 103 12.6 11.4 111
Divide Peak 8880 15.6 14.5 108 17.9 15.8 113
Elk River 8700 17.0 14.0 121 16.8 14.9 113
Little Snake River 8915 26.6 18.7 142 32.2 24.0 134
Old Battle 10000 30.0 22.6 133 31.3 26.2 119
Sage Creek Basin 7850 13.2 10.1 131 12.8 11.2 114
Sandstone RS 8150 10.7 10.1 106 13.0 14.0 93
Whiskey Park 8950 22.6 19.7 115 24.0 21.0 114
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Basin Index (%) 122 116
UPPER GREEN RIVER
Big Sandy Opening 9080 17.6 9.2 191 19.5 9.7 201
Blind Bull Sum 8650 33.3 16.7 199 -M 14.9 *
East Rim Divide 7930 15.7 7.5 209 17.5 8.8 199
Elkhart Park G.S. 9400 14.5 8.8 165 19.3 9.7 199
Gros Ventre Summit 8750 -M 9.1 * -M 9.4 *
Gunsight Pass 9820 15.9 9.8 162 19.1 10.2 187
Kendall R.S. 7740 18.7 9.1 205 22.9 10.8 212
Loomis Park 8240 22.0 10.8 204 26.3 13.0 202
New Fork Lake 8340 14.0 7.6 184 14.3 8.1 177
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 16.2 9.1 178 21.7 10.7 203
Spring Creek Divide 9000 29.2 16.8 174 29.7 18.0 165
Triple Peak 8500 30.0 15.7 191 31.3 18.6 168
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Basin Index (%) 188 188
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.8 -M * 11.4 -M *
Buck Pasture 9632 15.2 -M * 17.6 -M *
EF Blacks Fork GS 9360 12.3 -M * 9.8 -M *
Hams Fork 7840 14.3 8.5 168 16.2 8.5 191
Hewinta 9519 9.7 7.1 137 11.7 10.0 117
Hickerson Park 9145 6.5 5.2 125 6.8 7.0 97
Hole-in-Rock 9150 5.3 4.9 108 7.3 6.6 111
Indian Creek 9425 29.4 17.0 173 -M 16.5 *
Kelley R.S. 8180 20.9 10.9 192 24.4 13.5 181
Spirit Lk 10235 11.4 -M * 12.4 -M *
Steel Creek Park 10200 12.5 10.4 120 14.3 11.5 124
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Basin Index (%) 154 141
UPPER BEAR RIVER
Bear River RS 8777 10.5 -M * 13.0 -M *
Bug Lake 7950 -M 13.6 * -M 14.5 *
Burts Miller Ranch 8000 5.7 -M * 6.7 -M *
Chalk Creek #1 8993 26.0 16.5 158 27.1 18.2 149
Hayden Fork 9212 18.0 11.2 161 22.8 15.2 150
Kelley R.S. 8180 20.9 10.9 192 24.4 13.5 181
Lily Lake 9156 12.4 9.3 133 13.8 12.4 111
Monte Cristo 8960 27.0 19.3 140 25.8 19.0 136
Salt River Summit 7760 17.0 9.7 175 22.7 12.5 182
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Basin Index (%) 158 150
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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.