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 FRIDAY: MARCH 3 , 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 24.3 13.6 179 31.7 17.4 182
Black Bear 8170 37.7 29.9 126 44.3 31.3 142
Blind Bull Sum 8650 37.0 18.2 203 -M 16.1 *
Cottonwood Creek 7670 25.1 17.2 146 31.7 19.8 160
East Rim Divide 7930 17.4 8.3 210 18.9 9.6 197
Grand Targhee 9260 36.2 30.5 119 -M 25.0 *
Granite Creek 6770 28.0 13.9 201 -M 16.6 *
Grassy Lake 7265 32.7 26.4 124 44.9 29.8 151
Gros Ventre Summit 8750 -M 10.0 * -M 10.2 *
Gunsight Pass 9820 17.9 10.7 167 20.6 10.9 189
Lewis Lake Divide 7850 33.3 25.3 132 42.3 29.2 145
Phillips Bench 8200 31.2 19.9 157 39.1 23.0 170
Salt River Summit 7760 19.2 10.7 179 24.7 13.6 182
Snake River Station 6920 20.0 14.4 139 30.1 18.8 160
Spring Creek Divide 9000 33.5 18.8 178 -M 19.5 *
Thumb Divide 7980 20.0 12.4 161 -M 14.8 *
Togwotee Pass 9580 27.8 18.1 154 31.9 19.6 163
Two Ocean Plateau 9240 -M 21.7 * -M 21.9 *
Willow Creek 8380 28.6 22.6 127 41.8 27.1 154
Younts Peak 8350 22.9 11.7 196 25.6 12.8 200
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Basin Index (%) 153 163
MADISON-GALLATIN
Black Bear 8170 37.7 29.9 126 44.3 31.3 142
Canyon 7870 15.3 10.7 143 21.6 13.2 164
Madison Plateau 7750 22.9 18.0 127 30.7 21.5 143
West Yellowstone 6700 11.8 9.1 130 19.9 11.7 170
Whiskey Creek 6800 14.0 12.1 116 22.6 16.5 137
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Basin Index (%) 127 148
YELLOWSTONE
Beartooth Lake 9360 25.8 17.1 151 21.3 15.9 134
Burnt Mtn 5880 5.2 4.1 127 11.3 9.6 118
Canyon 7870 15.3 10.7 143 21.6 13.2 164
Cole Creek 7850 8.5 10.2 83 6.2 9.2 67
Evening Star 9200 30.8 19.4 159 36.3 22.3 163
Fisher Creek 9100 33.0 26.0 127 37.3 25.8 145
Northeast Entrance 7350 10.4 8.3 125 16.0 10.0 160
Parker Peak 9400 26.7 16.2 165 25.1 14.2 177
Sylvan Lake 8420 20.6 16.0 129 31.7 18.1 175
Thumb Divide 7980 20.0 12.4 161 -M 14.8 *
Two Ocean Plateau 9240 -M 21.7 * -M 21.9 *
White Mill 8700 25.4 18.5 137 27.1 19.2 141
Wolverine 7650 14.0 8.6 163 17.8 10.1 176
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Basin Index (%) 141 150
WIND RIVER
Burroughs Creek 8750 20.6 -M * 22.7 -M *
Castle Creek 8400 11.4 -M * 13.5 -M *
Cold Springs 9630 11.8 5.6 211 14.1 7.5 188
Deer Park 9700 27.9 10.9 256 29.0 15.4 188
Hobbs Park 10100 21.5 9.9 217 19.9 9.6 207
Kirwin 9550 16.0 7.1 225 18.9 8.9 212
Little Warm 9370 13.9 8.1 172 19.5 9.9 197
Owl Creek 8975 6.7 4.0 168 8.4 4.4 191
South Pass 9040 25.5 11.6 220 23.2 13.6 171
St. Lawrence Alt 8620 7.4 5.3 140 11.9 6.6 180
Togwotee Pass 9580 27.8 18.1 154 31.9 19.6 163
Townsend Creek 8700 12.4 6.7 185 15.5 8.7 178
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Basin Index (%) 196 185
BIGHORN BASIN
Bald Mtn. 9380 15.4 15.0 103 13.4 13.3 101
Bear Trap Meadow 8200 4.5 4.5 100 5.7 6.2 92
Bone Springs Div 9350 13.6 12.3 111 13.2 11.9 111
Grave Springs 8550 5.1 7.0 73 5.7 8.0 71
Kirwin 9550 16.0 7.1 225 18.9 8.9 212
Marquette 8760 7.3 -M * 11.1 -M *
Middle Powder 7760 6.0 8.2 73 6.1 8.8 69
Owl Creek 8975 6.7 4.0 168 8.4 4.4 191
Powder River Pass 9480 6.2 8.0 78 9.0 9.7 93
Shell Creek 9580 13.0 11.8 110 10.2 10.7 95
Timber Creek 7950 5.3 3.9 136 6.6 5.3 125
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Basin Index (%) 112 111
SHOSHONE RIVER
Blackwater 9780 30.1 17.5 172 33.3 16.3 204
Evening Star 9200 30.8 19.4 159 36.3 22.3 163
Marquette 8760 7.3 -M * 11.1 -M *
Sylvan Road 7120 14.3 9.6 149 25.6 14.0 183
Younts Peak 8350 22.9 11.7 196 25.6 12.8 200
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Basin Index (%) 169 185
POWDER RIVER
Bear Trap Meadow 8200 4.5 4.5 100 5.7 6.2 92
Cloud Peak Reservoir 9860 10.1 10.5 96 11.4 9.7 118
Grave Springs 8550 5.1 7.0 73 5.7 8.0 71
Hansen Sawmill 8360 6.8 4.7 145 8.6 6.2 139
Middle Powder 7760 6.0 8.2 73 6.1 8.8 69
Powder River Pass 9480 6.2 8.0 78 9.0 9.7 93
Soldier Park 8720 10.1 -M * 8.5 -M *
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Basin Index (%) 90 96
TONGUE RIVER
Big Goose 7990 7.2 6.3 114 8.2 8.0 102
Bone Springs Div 9350 13.6 12.3 111 13.2 11.9 111
Burgess Junction 7880 7.5 8.4 89 8.4 9.1 92
Dome Lake 8880 9.5 8.8 108 10.6 10.0 106
Little Goose 8870 7.9 -M * 10.3 -M *
Sucker Creek 8880 8.8 9.1 97 8.6 10.7 80
Tie Creek 6870 5.0 4.4 114 9.2 8.6 107
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Basin Index (%) 105 100
BELLE FOURCHE
Cole Canyon 5910 3.1 4.9 63 5.8 7.2 81
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Basin Index (%) 63 81
CHEYENNE RIVER BASIN
Blind Park 6890 4.3 6.4 67 6.8 9.5 72
North Rapid Creek 6130 4.5 6.0 75 5.8 7.7 75
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Basin Index (%) 71 73
UPPER N. PLATTE
Arapaho Ridge 10960 22.6 16.9 134 22.8 17.9 127
Blackhall Mtn 9820 33.2 -M * 31.5 -M *
Columbine 9160 22.7 20.1 113 24.5 20.6 119
Divide Peak 8880 17.9 16.1 111 20.2 16.9 120
Joe Wright 10120 17.7 16.9 105 25.1 20.1 125
Laprele Creek 8375 10.4 7.8 133 9.9 9.4 105
Med Bow 10500 33.9 -M * 30.3 -M *
North French Creek 10130 22.4 21.2 106 23.4 21.2 110
Never Summer 10280 20.5 16.3 126 16.8 -M *
Old Battle 10000 33.5 24.2 138 31.6 28.1 112
Rawah 9020 12.0 8.8 136 14.7 11.0 134
Sage Creek Basin 7850 14.9 10.7 139 14.7 11.8 125
Sand Lake 10050 25.9 21.3 122 24.0 19.1 126
South Brush Creek 8440 10.1 10.4 97 10.6 11.8 90
Tower 10500 38.0 36.7 104 38.2 32.3 118
Webber Springs 9250 25.5 18.9 135 30.1 21.3 141
Willow Creek Pass 9540 16.0 9.7 165 16.7 10.5 159
Zirkel 9340 38.0 23.3 163 37.2 23.6 158
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Basin Index (%) 125 125
SWEETWATER
Deer Park 9700 27.9 10.9 256 29.0 15.4 188
Larsen Creek 9000 18.1 9.7 187 20.5 -M *
South Pass 9040 25.5 11.6 220 23.2 13.6 171
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Basin Index (%) 222 180
LOWER N. PLATTE
Casper Mtn. 7900 9.4 10.4 90 8.9 11.2 79
Laprele Creek 8375 10.4 7.8 133 9.9 9.4 105
Reno Hill 8400 9.9 10.3 96 10.2 11.2 91
Windy Peak 7900 9.0 5.8 155 9.5 7.8 122
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Basin Index (%) 113 97
LARAMIE RIVER
Brooklyn Lake 10240 22.0 15.3 144 19.8 16.2 122
Cinnabar Park 9574 17.3 17.3 100 19.7 19.8 99
Crow Creek 8330 4.6 6.8 68 7.4 7.9 94
Deadman Hill 10220 18.4 12.5 147 17.4 12.9 135
Rawah 9020 12.0 8.8 136 14.7 11.0 134
Roach 9700 15.1 12.6 120 17.8 14.8 120
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Basin Index (%) 122 117
S. PLATTE
Black Mountain 8920 9.2 -M * 10.3 -M *
Crow Creek 8330 4.6 6.8 68 7.4 7.9 94
Deadman Hill 10220 18.4 12.5 147 17.4 12.9 135
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Basin Index (%) 119 119
LITTLE SNAKE RIVER
Battle Mountain 7440 11.1 9.9 112 14.7 12.2 120
Divide Peak 8880 17.9 16.1 111 20.2 16.9 120
Elk River 8700 19.6 15.8 124 18.9 16.1 117
Little Snake River 8915 29.8 19.8 151 33.4 25.2 133
Old Battle 10000 33.5 24.2 138 31.6 28.1 112
Sage Creek Basin 7850 14.9 10.7 139 14.7 11.8 125
Sandstone RS 8150 12.1 10.7 113 14.6 15.2 96
Whiskey Park 8950 25.2 21.8 116 26.7 22.6 118
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Basin Index (%) 127 118
UPPER GREEN RIVER
Big Sandy Opening 9080 19.2 10.2 188 20.7 10.6 195
Blind Bull Sum 8650 37.0 18.2 203 -M 16.1 *
East Rim Divide 7930 17.4 8.3 210 18.9 9.6 197
Elkhart Park G.S. 9400 16.2 9.5 171 20.5 10.6 193
Gros Ventre Summit 8750 -M 10.0 * -M 10.2 *
Gunsight Pass 9820 17.9 10.7 167 20.6 10.9 189
Kendall R.S. 7740 20.9 9.9 211 24.4 11.8 207
Loomis Park 8240 24.4 11.9 205 27.5 14.2 194
New Fork Lake 8340 15.0 8.3 181 15.1 8.8 172
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 18.9 9.9 191 23.7 11.7 203
Spring Creek Divide 9000 33.5 18.8 178 -M 19.5 *
Triple Peak 8500 33.1 17.1 194 34.9 20.5 170
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Basin Index (%) 191 190
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.4 -M * 13.0 -M *
Buck Pasture 9632 17.5 -M * 19.6 -M *
EF Blacks Fork GS 9360 14.4 -M * 13.5 -M *
Hams Fork 7840 16.1 9.4 171 17.7 9.2 192
Hewinta 9500 12.0 8.0 150 13.8 11.0 125
Hickerson Park 9122 8.1 6.0 135 8.1 7.6 107
Hole-in-Rock 9168 6.6 5.7 116 8.7 7.2 121
Indian Creek 9425 34.3 19.1 180 -M 18.0 *
Kelley R.S. 8180 24.0 12.2 197 26.9 14.7 183
Spirit Lk 10235 13.6 -M * 14.4 -M *
Steel Creek Park 10158 14.7 11.7 126 16.2 12.6 129
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Basin Index (%) 161 147
UPPER BEAR RIVER
Bear River RS 8777 12.4 -M * 14.9 -M *
Bug Lake 7987 28.4 15.0 189 28.1 15.6 180
Burts Miller Ranch 8000 7.7 -M * 8.3 -M *
Chalk Creek #1 9171 30.6 18.6 165 31.1 19.8 157
Hayden Fork 9130 22.1 12.3 180 25.8 16.6 155
Kelley R.S. 8180 24.0 12.2 197 26.9 14.7 183
Lily Lake 9133 14.4 10.5 137 16.6 13.4 124
Monte Cristo 8932 31.8 21.5 148 29.9 20.8 144
Salt River Summit 7760 19.2 10.7 179 24.7 13.6 182
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Basin Index (%) 169 160
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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.