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 1 , 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 24.2 13.5 179 31.7 17.2 184
Black Bear 8170 37.5 29.6 127 44.2 30.8 144
Blind Bull Sum 8650 36.5 17.9 204 -M 16.0 *
Cottonwood Creek 7670 25.0 16.9 148 31.5 19.6 161
East Rim Divide 7930 17.3 8.1 214 18.8 9.6 196
Grand Targhee 9260 35.9 30.2 119 32.1 24.8 129
Granite Creek 6770 27.9 13.8 202 -M 16.5 *
Grassy Lake 7265 32.6 26.2 124 42.8 29.4 146
Gros Ventre Summit 8750 16.9 9.7 174 19.0 10.1 188
Gunsight Pass 9820 17.7 10.6 167 20.2 10.9 185
Lewis Lake Divide 7850 33.3 25.2 132 41.8 28.7 146
Phillips Bench 8200 31.0 19.7 157 39.0 22.7 172
Salt River Summit 7760 19.1 10.6 180 24.6 13.4 184
Snake River Station 6920 19.7 14.2 139 30.1 18.7 161
Spring Creek Divide 9000 33.3 18.6 179 29.6 19.3 153
Thumb Divide 7980 19.8 12.3 161 21.4 14.6 147
Togwotee Pass 9580 27.7 17.7 156 31.6 19.4 163
Two Ocean Plateau 9240 -M 21.6 * -M 21.6 *
Willow Creek 8380 28.7 22.2 129 41.6 26.8 155
Younts Peak 8350 22.5 11.7 192 25.0 12.6 198
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Basin Index (%) 154 160
MADISON-GALLATIN
Black Bear 8170 37.5 29.6 127 44.2 30.8 144
Canyon 7870 15.3 10.5 146 21.5 13.0 165
Madison Plateau 7750 22.7 17.8 128 30.0 21.2 142
West Yellowstone 6700 11.4 9.0 127 19.8 11.7 169
Whiskey Creek 6800 13.8 12.0 115 22.5 16.3 138
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Basin Index (%) 128 148
YELLOWSTONE
Beartooth Lake 9360 25.4 16.7 152 20.8 15.7 132
Burnt Mtn 5880 5.2 4.0 130 11.1 9.5 117
Canyon 7870 15.3 10.5 146 21.5 13.0 165
Cole Creek 7850 8.4 9.9 85 6.1 9.1 67
Evening Star 9200 30.0 19.1 157 35.5 22.1 161
Fisher Creek 9100 32.6 25.8 126 36.7 25.5 144
Northeast Entrance 7350 10.3 8.2 126 15.9 9.9 161
Parker Peak 9400 26.2 16.0 164 23.2 14.0 166
Sylvan Lake 8420 20.5 15.9 129 31.3 18.0 174
Thumb Divide 7980 19.8 12.3 161 21.4 14.6 147
Two Ocean Plateau 9240 -M 21.6 * -M 21.6 *
White Mill 8700 25.0 18.3 137 26.6 18.9 141
Wolverine 7650 13.7 8.5 161 17.6 10.0 176
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Basin Index (%) 141 148
WIND RIVER
Burroughs Creek 8750 20.6 -M * 22.3 -M *
Castle Creek 8400 11.2 -M * 13.4 -M *
Cold Springs 9630 11.6 5.5 211 13.8 7.5 184
Deer Park 9700 27.8 10.8 257 28.5 15.3 186
Hobbs Park 10100 21.3 9.7 220 19.6 9.5 206
Kirwin 9550 15.8 7.0 226 18.2 8.8 207
Little Warm 9370 13.8 7.9 175 19.3 9.8 197
Owl Creek 8975 6.7 3.9 172 8.3 4.3 193
South Pass 9040 25.4 11.4 223 22.9 13.5 170
St. Lawrence Alt 8620 7.2 5.2 138 11.8 6.5 182
Togwotee Pass 9580 27.7 17.7 156 31.6 19.4 163
Townsend Creek 8700 12.3 6.5 189 15.2 8.6 177
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Basin Index (%) 198 183
BIGHORN BASIN
Bald Mtn. 9380 15.1 14.7 103 13.0 13.1 99
Bear Trap Meadow 8200 4.4 4.4 100 5.6 6.1 92
Bone Springs Div 9350 13.4 12.0 112 12.7 11.7 109
Grave Springs 8550 5.1 6.9 74 5.7 7.9 72
Kirwin 9550 15.8 7.0 226 18.2 8.8 207
Marquette 8760 7.2 -M * 11.0 -M *
Middle Powder 7760 5.9 8.0 74 5.6 8.7 64
Owl Creek 8975 6.7 3.9 172 8.3 4.3 193
Powder River Pass 9480 6.2 8.0 78 8.8 9.6 92
Shell Creek 9580 12.8 11.6 110 9.8 10.7 92
Timber Creek 7950 5.2 3.7 141 6.6 5.3 125
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Basin Index (%) 113 109
SHOSHONE RIVER
Blackwater 9780 29.9 17.2 174 33.1 16.1 206
Evening Star 9200 30.0 19.1 157 35.5 22.1 161
Marquette 8760 7.2 -M * 11.0 -M *
Sylvan Road 7120 14.4 9.4 153 25.6 13.9 184
Younts Peak 8350 22.5 11.7 192 25.0 12.6 198
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Basin Index (%) 169 184
POWDER RIVER
Bear Trap Meadow 8200 4.4 4.4 100 5.6 6.1 92
Cloud Peak Reservoir 9860 9.8 10.4 94 11.1 9.6 116
Grave Springs 8550 5.1 6.9 74 5.7 7.9 72
Hansen Sawmill 8360 6.7 4.7 143 8.6 6.1 141
Middle Powder 7760 5.9 8.0 74 5.6 8.7 64
Powder River Pass 9480 6.2 8.0 78 8.8 9.6 92
Soldier Park 8720 9.7 -M * 8.4 -M *
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Basin Index (%) 90 95
TONGUE RIVER
Big Goose 7990 7.1 6.2 115 8.0 7.9 101
Bone Springs Div 9350 13.4 12.0 112 12.7 11.7 109
Burgess Junction 7880 7.3 8.3 88 8.3 9.0 92
Dome Lake 8880 8.9 8.7 102 10.4 10.0 104
Little Goose 8870 7.8 -M * 10.1 -M *
Sucker Creek 8880 8.6 8.9 97 8.3 10.6 78
Tie Creek 6870 4.8 4.3 112 8.9 8.4 106
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Basin Index (%) 104 98
BELLE FOURCHE
Cole Canyon 5910 3.0 5.0 60 5.6 7.1 79
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Basin Index (%) 60 79
CHEYENNE RIVER BASIN
Blind Park 6890 4.3 6.4 67 6.6 9.4 70
North Rapid Creek 6130 4.3 5.9 73 5.6 7.6 74
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Basin Index (%) 70 72
UPPER N. PLATTE
Arapaho Ridge 10960 22.5 16.7 135 22.7 17.7 128
Blackhall Mtn 9820 32.8 -M * 31.2 -M *
Columbine 9160 22.7 19.8 115 24.3 20.3 120
Divide Peak 8880 17.8 15.8 113 19.8 16.8 118
Joe Wright 10120 17.5 16.6 105 24.3 19.9 122
Laprele Creek 8375 10.3 7.8 132 9.7 9.3 104
Med Bow 10500 33.7 -M * 30.2 -M *
North French Creek 10130 22.2 21.1 105 23.4 21.1 111
Never Summer 10280 20.4 16.2 126 16.8 -M *
Old Battle 10000 33.4 23.9 140 31.1 27.9 111
Rawah 9020 12.2 8.8 139 14.6 10.9 134
Sage Creek Basin 7850 14.6 10.6 138 14.7 11.7 126
Sand Lake 10050 25.6 21.2 121 23.6 18.9 125
South Brush Creek 8440 9.9 10.3 96 10.5 11.7 90
Tower 10500 37.7 36.3 104 37.3 31.8 117
Webber Springs 9250 26.2 18.7 140 29.8 21.1 141
Willow Creek Pass 9540 15.8 9.5 166 16.2 10.4 156
Zirkel 9340 37.5 23.0 163 37.1 23.4 159
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Basin Index (%) 125 124
SWEETWATER
Deer Park 9700 27.8 10.8 257 28.5 15.3 186
Larsen Creek 9000 18.1 9.5 191 20.5 -M *
South Pass 9040 25.4 11.4 223 22.9 13.5 170
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Basin Index (%) 225 178
LOWER N. PLATTE
Casper Mtn. 7900 9.2 10.2 90 8.7 11.1 78
Laprele Creek 8375 10.3 7.8 132 9.7 9.3 104
Reno Hill 8400 9.8 10.0 98 9.8 11.1 88
Windy Peak 7900 9.0 5.7 158 9.3 7.8 119
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Basin Index (%) 114 95
LARAMIE RIVER
Brooklyn Lake 10240 21.7 15.0 145 19.4 16.0 121
Cinnabar Park 9574 17.1 17.1 100 19.5 19.7 99
Crow Creek 8330 4.7 6.7 70 7.4 7.8 95
Deadman Hill 10220 18.1 12.4 146 17.2 12.7 135
Rawah 9020 12.2 8.8 139 14.6 10.9 134
Roach 9700 15.0 12.4 121 17.7 14.7 120
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Basin Index (%) 123 117
S. PLATTE
Black Mountain 8920 9.0 -M * 10.2 -M *
Crow Creek 8330 4.7 6.7 70 7.4 7.8 95
Deadman Hill 10220 18.1 12.4 146 17.2 12.7 135
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Basin Index (%) 119 120
LITTLE SNAKE RIVER
Battle Mountain 7440 11.0 9.9 111 14.7 12.1 121
Divide Peak 8880 17.8 15.8 113 19.8 16.8 118
Elk River 8700 19.4 15.5 125 18.7 15.9 118
Little Snake River 8915 29.7 19.7 151 33.3 24.9 134
Old Battle 10000 33.4 23.9 140 31.1 27.9 111
Sage Creek Basin 7850 14.6 10.6 138 14.7 11.7 126
Sandstone RS 8150 12.2 10.4 117 14.5 15.0 97
Whiskey Park 8950 24.8 21.5 115 26.2 22.4 117
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Basin Index (%) 128 118
UPPER GREEN RIVER
Big Sandy Opening 9080 19.0 10.1 188 20.7 10.5 197
Blind Bull Sum 8650 36.5 17.9 204 -M 16.0 *
East Rim Divide 7930 17.3 8.1 214 18.8 9.6 196
Elkhart Park G.S. 9400 16.1 9.4 171 20.4 10.5 194
Gros Ventre Summit 8750 16.9 9.7 174 19.0 10.1 188
Gunsight Pass 9820 17.7 10.6 167 20.2 10.9 185
Kendall R.S. 7740 20.7 9.7 213 24.3 11.7 208
Loomis Park 8240 24.3 11.7 208 27.2 14.0 194
New Fork Lake 8340 14.9 8.2 182 14.9 8.8 169
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.9 9.6 197 23.7 11.5 206
Spring Creek Divide 9000 33.3 18.6 179 29.6 19.3 153
Triple Peak 8500 32.9 16.8 196 34.5 20.2 171
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Basin Index (%) 191 185
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.4 -M * 13.0 -M *
Buck Pasture 9632 17.4 -M * 19.6 -M *
EF Blacks Fork GS 9360 14.4 -M * 13.5 -M *
Hams Fork 7840 15.9 9.2 173 17.6 9.1 193
Hewinta 9500 11.9 7.9 151 13.8 10.8 128
Hickerson Park 9122 8.1 5.9 137 8.1 7.6 107
Hole-in-Rock 9168 6.6 5.6 118 8.7 7.1 123
Indian Creek 9425 34.0 19.0 179 -M 17.8 *
Kelley R.S. 8180 23.9 12.1 198 26.8 14.6 184
Spirit Lk 10235 13.6 -M * 14.4 -M *
Steel Creek Park 10158 14.6 11.5 127 16.2 12.4 131
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Basin Index (%) 162 148
UPPER BEAR RIVER
Bear River RS 8777 12.4 -M * 14.8 -M *
Bug Lake 7987 28.0 14.8 189 27.9 15.5 180
Burts Miller Ranch 8000 7.7 -M * 8.3 -M *
Chalk Creek #1 9171 30.5 18.3 167 30.7 19.4 158
Hayden Fork 9130 21.6 12.1 179 25.6 16.4 156
Kelley R.S. 8180 23.9 12.1 198 26.8 14.6 184
Lily Lake 9133 14.3 10.3 139 16.5 13.2 125
Monte Cristo 8932 31.8 21.0 151 30.8 20.5 150
Salt River Summit 7760 19.1 10.6 180 24.6 13.4 184
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Basin Index (%) 171 162
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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.