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 WEDNESDAY: MARCH 8 , 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 25.7 13.8 186 -M 18.0 *
Black Bear 8170 40.2 30.9 130 45.5 32.6 140
Blind Bull Sum 8650 38.2 19.0 201 -M 16.6 *
Cottonwood Creek 7670 26.1 18.2 143 32.9 20.5 160
East Rim Divide 7930 18.1 9.2 197 19.3 10.0 193
Grand Targhee 9260 38.7 31.3 124 -M 25.4 *
Granite Creek 6770 28.8 14.4 200 -M 17.3 *
Grassy Lake 7265 34.4 27.2 126 47.1 30.8 153
Gros Ventre Summit 8750 17.6 10.7 164 21.2 10.7 198
Gunsight Pass 9820 18.7 11.3 165 21.5 11.4 189
Lewis Lake Divide 7850 35.1 25.9 136 -M 30.3 *
Phillips Bench 8200 32.4 20.8 156 39.4 23.8 166
Salt River Summit 7760 19.9 11.0 181 25.2 14.1 179
Snake River Station 6920 21.4 14.9 144 -M 19.5 *
Spring Creek Divide 9000 34.9 19.5 179 -M 20.1 *
Thumb Divide 7980 20.8 12.8 162 -M 15.5 *
Togwotee Pass 9580 28.8 19.2 150 32.9 20.4 161
Two Ocean Plateau 9240 -M 22.5 * -M 22.9 *
Willow Creek 8380 29.1 23.8 122 43.0 28.0 154
Younts Peak 8350 23.9 12.1 198 26.1 13.2 198
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Basin Index (%) 154 164
MADISON-GALLATIN
Black Bear 8170 40.2 30.9 130 45.5 32.6 140
Canyon 7870 16.1 11.3 142 22.3 13.7 163
Madison Plateau 7750 24.3 18.8 129 31.8 22.4 142
West Yellowstone 6700 12.3 9.4 131 20.5 12.2 168
Whiskey Creek 6800 14.7 12.8 115 23.3 17.1 136
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Basin Index (%) 129 146
YELLOWSTONE
Beartooth Lake 9360 26.6 18.0 148 21.9 16.6 132
Burnt Mtn 5880 5.4 4.4 123 11.5 9.8 117
Canyon 7870 16.1 11.3 142 22.3 13.7 163
Cole Creek 7850 9.0 10.9 83 6.4 9.6 67
Evening Star 9200 31.6 20.5 154 -M 23.1 *
Fisher Creek 9100 34.7 26.6 130 38.4 26.7 144
Northeast Entrance 7350 11.0 8.6 128 16.5 10.3 160
Parker Peak 9400 27.7 16.5 168 23.4 14.7 159
Sylvan Lake 8420 21.5 16.7 129 32.6 18.8 173
Thumb Divide 7980 20.8 12.8 162 -M 15.5 *
Two Ocean Plateau 9240 -M 22.5 * -M 22.9 *
White Mill 8700 26.6 18.9 141 28.1 19.9 141
Wolverine 7650 13.3 9.0 148 18.0 10.4 173
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Basin Index (%) 140 146
WIND RIVER
Burroughs Creek 8750 21.3 -M * 23.2 -M *
Castle Creek 8400 11.7 -M * 13.9 -M *
Cold Springs 9630 12.2 5.8 210 14.3 7.9 181
Deer Park 9700 28.4 11.6 245 30.3 16.1 188
Hobbs Park 10100 21.9 10.7 205 20.0 10.1 198
Kirwin 9550 16.9 7.6 222 19.6 9.2 213
Little Warm 9370 14.8 8.5 174 20.2 10.4 194
Owl Creek 8975 6.9 4.2 164 8.6 4.5 191
South Pass 9040 26.1 12.3 212 23.2 14.3 162
St. Lawrence Alt 8620 7.1 5.7 125 12.0 6.9 174
Togwotee Pass 9580 28.8 19.2 150 32.9 20.4 161
Townsend Creek 8700 12.5 7.2 174 15.6 9.1 171
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Basin Index (%) 189 181
BIGHORN BASIN
Bald Mtn. 9380 16.2 15.8 103 13.8 13.8 100
Bear Trap Meadow 8200 4.9 4.6 107 5.9 6.4 92
Bone Springs Div 9350 14.5 13.1 111 13.6 12.3 111
Grave Springs 8550 5.6 7.3 77 6.1 8.2 74
Kirwin 9550 16.9 7.6 222 19.6 9.2 213
Marquette 8760 7.6 -M * 11.5 -M *
Middle Powder 7760 6.6 8.6 77 6.0 9.1 66
Owl Creek 8975 6.9 4.2 164 8.6 4.5 191
Powder River Pass 9480 6.8 8.3 82 9.6 10.0 96
Shell Creek 9580 13.5 12.2 111 10.6 11.0 96
Timber Creek 7950 5.4 4.0 135 6.8 5.5 124
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Basin Index (%) 114 112
SHOSHONE RIVER
Blackwater 9780 31.7 18.6 170 34.6 16.9 205
Evening Star 9200 31.6 20.5 154 -M 23.1 *
Marquette 8760 7.6 -M * 11.5 -M *
Sylvan Road 7120 14.7 9.9 148 26.4 14.5 182
Younts Peak 8350 23.9 12.1 198 26.1 13.2 198
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Basin Index (%) 167 195
POWDER RIVER
Bear Trap Meadow 8200 4.9 4.6 107 5.9 6.4 92
Cloud Peak Reservoir 9860 10.7 11.3 95 12.0 10.1 119
Grave Springs 8550 5.6 7.3 77 6.1 8.2 74
Hansen Sawmill 8360 7.0 5.0 140 8.9 6.4 139
Middle Powder 7760 6.6 8.6 77 6.0 9.1 66
Powder River Pass 9480 6.8 8.3 82 9.6 10.0 96
Soldier Park 8720 10.3 -M * 8.7 -M *
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Basin Index (%) 92 97
TONGUE RIVER
Big Goose 7990 7.9 6.6 120 8.8 8.3 106
Bone Springs Div 9350 14.5 13.1 111 13.6 12.3 111
Burgess Junction 7880 8.0 9.0 89 8.6 9.5 91
Dome Lake 8880 11.0 9.2 120 11.4 10.4 110
Little Goose 8870 8.6 -M * 11.0 -M *
Sucker Creek 8880 9.4 9.8 96 9.0 11.1 81
Tie Creek 6870 5.3 4.7 113 9.4 8.8 107
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Basin Index (%) 107 101
BELLE FOURCHE
Cole Canyon 5910 2.9 4.9 59 5.7 7.3 78
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Basin Index (%) 59 78
CHEYENNE RIVER BASIN
Blind Park 6890 4.2 6.6 64 7.0 9.8 71
North Rapid Creek 6130 4.6 6.2 74 5.7 7.9 72
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Basin Index (%) 69 72
UPPER N. PLATTE
Arapaho Ridge 10960 23.3 17.4 134 23.3 18.4 127
Blackhall Mtn 9820 34.1 -M * 32.4 -M *
Columbine 9160 23.8 20.8 114 25.1 21.3 118
Divide Peak 8880 18.5 16.8 110 20.5 17.6 116
Joe Wright 10120 17.6 18.0 98 25.5 21.0 121
Laprele Creek 8375 10.9 8.2 133 10.1 9.8 103
Med Bow 10500 35.1 -M * 30.6 -M *
North French Creek 10130 23.0 22.1 104 23.9 22.1 108
Never Summer 10280 21.0 16.7 126 17.1 -M *
Old Battle 10000 34.7 25.1 138 35.2 29.3 120
Rawah 9020 12.0 9.1 132 14.9 11.4 131
Sage Creek Basin 7850 15.4 11.2 138 15.2 12.2 125
Sand Lake 10050 26.8 22.0 122 24.6 20.0 123
South Brush Creek 8440 10.4 11.0 95 10.8 12.3 88
Tower 10500 38.8 37.8 103 41.1 33.4 123
Webber Springs 9250 27.7 19.8 140 31.0 22.2 140
Willow Creek Pass 9540 16.2 10.1 160 16.6 10.9 152
Zirkel 9340 39.2 24.7 159 38.8 24.1 161
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Basin Index (%) 124 125
SWEETWATER
Deer Park 9700 28.4 11.6 245 30.3 16.1 188
Larsen Creek 9000 19.1 10.1 189 20.9 -M *
South Pass 9040 26.1 12.3 212 23.2 14.3 162
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Basin Index (%) 216 176
LOWER N. PLATTE
Casper Mtn. 7900 10.6 11.2 95 10.0 11.6 86
Laprele Creek 8375 10.9 8.2 133 10.1 9.8 103
Reno Hill 8400 10.8 11.0 98 11.1 11.8 94
Windy Peak 7900 9.6 6.4 150 9.8 8.3 118
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Basin Index (%) 114 99
LARAMIE RIVER
Brooklyn Lake 10240 22.8 16.3 140 20.3 17.0 119
Cinnabar Park 9574 17.7 17.7 100 20.1 20.3 99
Crow Creek 8330 4.7 7.0 67 7.6 8.3 92
Deadman Hill 10220 18.9 12.8 148 17.5 13.7 128
Rawah 9020 12.0 9.1 132 14.9 11.4 131
Roach 9700 15.3 13.1 117 18.1 15.6 116
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Basin Index (%) 120 114
S. PLATTE
Black Mountain 8920 9.3 -M * 10.5 -M *
Crow Creek 8330 4.7 7.0 67 7.6 8.3 92
Deadman Hill 10220 18.9 12.8 148 17.5 13.7 128
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Basin Index (%) 119 114
LITTLE SNAKE RIVER
Battle Mountain 7440 10.8 10.3 105 15.2 12.7 120
Divide Peak 8880 18.5 16.8 110 20.5 17.6 116
Elk River 8700 20.0 16.6 120 18.9 16.8 112
Little Snake River 8915 30.8 20.2 152 34.4 25.6 134
Old Battle 10000 34.7 25.1 138 35.2 29.3 120
Sage Creek Basin 7850 15.4 11.2 138 15.2 12.2 125
Sandstone RS 8150 12.4 11.7 106 14.7 15.7 94
Whiskey Park 8950 26.0 22.8 114 27.3 23.4 117
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Basin Index (%) 125 118
UPPER GREEN RIVER
Big Sandy Opening 9080 19.7 10.6 186 20.8 11.0 189
Blind Bull Sum 8650 38.2 19.0 201 -M 16.6 *
East Rim Divide 7930 18.1 9.2 197 19.3 10.0 193
Elkhart Park G.S. 9400 16.8 9.9 170 20.8 11.0 189
Gros Ventre Summit 8750 17.6 10.7 164 21.2 10.7 198
Gunsight Pass 9820 18.7 11.3 165 21.5 11.4 189
Kendall R.S. 7740 22.0 10.3 214 -M 12.3 *
Loomis Park 8240 25.7 12.5 206 -M 14.7 *
New Fork Lake 8340 15.6 8.8 177 15.5 9.2 168
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 19.8 10.5 189 24.1 12.0 201
Spring Creek Divide 9000 34.9 19.5 179 -M 20.1 *
Triple Peak 8500 34.1 18.2 187 36.0 21.2 170
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Basin Index (%) 187 186
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.7 -M * 13.6 -M *
Buck Pasture 9632 18.6 -M * 20.6 -M *
EF Blacks Fork GS 9360 15.1 -M * 12.0 -M *
Hams Fork 7840 17.2 9.8 176 18.1 9.5 191
Hewinta 9500 12.6 8.5 148 14.2 11.3 126
Hickerson Park 9122 8.3 6.2 134 8.4 8.0 105
Hole-in-Rock 9168 6.9 5.9 117 9.1 7.4 123
Indian Creek 9425 36.0 19.9 181 -M 18.7 *
Kelley R.S. 8180 23.4 12.5 187 27.2 15.2 179
Spirit Lk 10235 13.7 -M * 14.7 -M *
Steel Creek Park 10158 15.3 12.3 124 17.1 13.0 132
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Basin Index (%) 159 146
UPPER BEAR RIVER
Bear River RS 8777 13.2 -M * 15.5 -M *
Bug Lake 7987 30.2 15.8 191 29.5 16.1 183
Burts Miller Ranch 8000 7.9 -M * 8.5 -M *
Chalk Creek #1 9171 31.7 19.4 163 31.9 20.5 156
Hayden Fork 9130 23.1 12.8 180 -M 17.1 *
Kelley R.S. 8180 23.4 12.5 187 27.2 15.2 179
Lily Lake 9133 14.3 10.8 132 17.0 13.9 122
Monte Cristo 8932 33.3 22.5 148 30.4 21.4 142
Salt River Summit 7760 19.9 11.0 181 25.2 14.1 179
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Basin Index (%) 168 159
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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.