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 THURSDAY: MARCH 9 , 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 26.4 13.8 191 -M 18.1 *
Black Bear 8170 41.3 31.2 132 46.3 32.8 141
Blind Bull Sum 8650 39.1 19.1 205 -M 16.8 *
Cottonwood Creek 7670 26.6 18.3 145 33.5 20.6 163
East Rim Divide 7930 18.3 9.3 197 19.5 10.1 193
Grand Targhee 9260 38.8 31.5 123 -M 25.4 *
Granite Creek 6770 29.1 14.5 201 -M 17.4 *
Grassy Lake 7265 35.0 27.3 128 48.3 31.0 156
Gros Ventre Summit 8750 17.8 10.7 166 21.3 10.8 197
Gunsight Pass 9820 18.9 11.5 164 21.6 11.5 188
Lewis Lake Divide 7850 35.9 26.1 138 -M 30.5 *
Phillips Bench 8200 33.4 20.9 160 39.4 24.0 164
Salt River Summit 7760 20.2 11.0 184 25.4 14.1 180
Snake River Station 6920 21.7 15.0 145 -M 19.5 *
Spring Creek Divide 9000 35.6 19.5 183 -M 20.3 *
Thumb Divide 7980 21.2 13.0 163 -M 15.6 *
Togwotee Pass 9580 29.3 19.3 152 33.3 20.5 162
Two Ocean Plateau 9240 -M 22.7 * -M 23.1 *
Willow Creek 8380 29.5 24.0 123 43.9 28.1 156
Younts Peak 8350 25.0 12.2 205 27.0 13.3 203
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Basin Index (%) 156 166
MADISON-GALLATIN
Black Bear 8170 41.3 31.2 132 46.3 32.8 141
Canyon 7870 16.2 11.4 142 22.4 13.9 161
Madison Plateau 7750 24.6 19.0 129 32.1 22.6 142
West Yellowstone 6700 12.4 9.5 131 20.6 12.3 167
Whiskey Creek 6800 15.0 13.0 115 23.6 17.2 137
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Basin Index (%) 130 147
YELLOWSTONE
Beartooth Lake 9360 27.3 18.1 151 22.7 16.7 136
Burnt Mtn 5880 5.4 4.4 123 11.5 10.0 115
Canyon 7870 16.2 11.4 142 22.4 13.9 161
Cole Creek 7850 9.0 11.0 82 6.5 9.8 66
Evening Star 9200 32.6 20.6 158 -M 23.2 *
Fisher Creek 9100 36.2 26.7 136 39.7 26.9 148
Northeast Entrance 7350 11.4 8.6 133 16.9 10.4 162
Parker Peak 9400 28.6 16.5 173 23.5 14.8 159
Sylvan Lake 8420 21.8 16.8 130 33.0 18.9 175
Thumb Divide 7980 21.2 13.0 163 -M 15.6 *
Two Ocean Plateau 9240 -M 22.7 * -M 23.1 *
White Mill 8700 -M 19.0 * 29.6 20.1 147
Wolverine 7650 13.1 9.0 146 18.5 10.4 178
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Basin Index (%) 143 148
WIND RIVER
Burroughs Creek 8750 21.4 -M * 23.5 -M *
Castle Creek 8400 11.8 -M * 14.0 -M *
Cold Springs 9630 12.3 5.8 212 14.6 7.9 185
Deer Park 9700 28.3 11.8 240 30.6 16.1 190
Hobbs Park 10100 22.2 10.8 206 20.2 10.2 198
Kirwin 9550 17.3 7.6 228 19.8 9.3 213
Little Warm 9370 14.9 8.6 173 20.4 10.4 196
Owl Creek 8975 7.0 4.3 163 8.7 4.5 193
South Pass 9040 26.2 12.4 211 23.4 14.4 162
St. Lawrence Alt 8620 7.2 5.8 124 12.0 6.9 174
Togwotee Pass 9580 29.3 19.3 152 33.3 20.5 162
Townsend Creek 8700 12.6 7.3 173 15.7 9.2 171
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Basin Index (%) 189 182
BIGHORN BASIN
Bald Mtn. 9380 16.2 15.9 102 14.0 13.8 101
Bear Trap Meadow 8200 5.0 4.6 109 6.0 6.5 92
Bone Springs Div 9350 14.5 13.2 110 13.9 12.4 112
Grave Springs 8550 5.8 7.3 79 6.2 8.2 76
Kirwin 9550 17.3 7.6 228 19.8 9.3 213
Marquette 8760 7.7 -M * 11.8 -M *
Middle Powder 7760 6.6 8.7 76 6.1 9.2 66
Owl Creek 8975 7.0 4.3 163 8.7 4.5 193
Powder River Pass 9480 6.8 8.3 82 9.8 10.1 97
Shell Creek 9580 13.6 12.2 111 10.7 11.1 96
Timber Creek 7950 5.4 4.0 135 6.9 5.5 125
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Basin Index (%) 114 113
SHOSHONE RIVER
Blackwater 9780 32.6 18.8 173 34.8 17.0 205
Evening Star 9200 32.6 20.6 158 -M 23.2 *
Marquette 8760 7.7 -M * 11.8 -M *
Sylvan Road 7120 15.2 10.0 152 26.8 14.6 184
Younts Peak 8350 25.0 12.2 205 27.0 13.3 203
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Basin Index (%) 171 197
POWDER RIVER
Bear Trap Meadow 8200 5.0 4.6 109 6.0 6.5 92
Cloud Peak Reservoir 9860 10.9 11.5 95 12.2 10.2 120
Grave Springs 8550 5.8 7.3 79 6.2 8.2 76
Hansen Sawmill 8360 7.1 5.1 139 9.0 6.5 138
Middle Powder 7760 6.6 8.7 76 6.1 9.2 66
Powder River Pass 9480 6.8 8.3 82 9.8 10.1 97
Soldier Park 8720 10.8 -M * 8.7 -M *
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Basin Index (%) 93 97
TONGUE RIVER
Big Goose 7990 8.0 6.7 119 8.9 8.3 107
Bone Springs Div 9350 14.5 13.2 110 13.9 12.4 112
Burgess Junction 7880 8.0 9.1 88 8.7 9.6 91
Dome Lake 8880 11.6 9.3 125 11.4 10.5 109
Little Goose 8870 8.6 -M * 11.1 -M *
Sucker Creek 8880 9.5 9.9 96 9.3 11.2 83
Tie Creek 6870 5.4 4.7 115 9.5 8.9 107
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Basin Index (%) 108 101
BELLE FOURCHE
Cole Canyon 5910 3.2 5.0 64 5.8 7.3 79
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Basin Index (%) 64 79
CHEYENNE RIVER BASIN
Blind Park 6890 3.9 6.7 58 7.0 9.9 71
North Rapid Creek 6130 4.6 6.2 74 5.9 8.0 74
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Basin Index (%) 66 72
UPPER N. PLATTE
Arapaho Ridge 10960 23.3 17.5 133 23.4 18.5 126
Blackhall Mtn 9820 34.3 -M * 32.7 -M *
Columbine 9160 23.7 20.9 113 25.7 21.4 120
Divide Peak 8880 18.6 16.8 111 20.7 17.8 116
Joe Wright 10120 17.8 18.2 98 25.6 21.2 121
Laprele Creek 8375 11.0 8.3 133 10.2 9.9 103
Med Bow 10500 35.2 -M * 30.8 -M *
North French Creek 10130 23.1 22.5 103 24.0 22.2 108
Never Summer 10280 21.1 16.8 126 17.1 -M *
Old Battle 10000 34.8 25.3 138 35.5 29.4 121
Rawah 9020 12.1 9.2 132 14.9 11.4 131
Sage Creek Basin 7850 15.5 11.3 137 15.2 12.3 124
Sand Lake 10050 27.1 22.3 122 24.9 20.1 124
South Brush Creek 8440 10.6 11.1 95 11.0 12.4 89
Tower 10500 39.0 37.9 103 41.3 33.6 123
Webber Springs 9250 28.0 20.0 140 31.3 22.3 140
Willow Creek Pass 9540 16.2 10.2 159 17.1 10.9 157
Zirkel 9340 39.2 25.0 157 38.9 24.1 161
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Basin Index (%) 123 125
SWEETWATER
Deer Park 9700 28.3 11.8 240 30.6 16.1 190
Larsen Creek 9000 19.2 10.2 188 21.0 -M *
South Pass 9040 26.2 12.4 211 23.4 14.4 162
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Basin Index (%) 214 177
LOWER N. PLATTE
Casper Mtn. 7900 10.8 11.3 96 10.1 11.8 86
Laprele Creek 8375 11.0 8.3 133 10.2 9.9 103
Reno Hill 8400 10.8 11.1 97 11.3 11.9 95
Windy Peak 7900 9.6 6.4 150 9.9 8.4 118
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Basin Index (%) 114 99
LARAMIE RIVER
Brooklyn Lake 10240 23.0 16.5 139 20.6 17.2 120
Cinnabar Park 9574 17.8 17.7 101 20.2 20.6 98
Crow Creek 8330 4.6 7.0 66 7.6 8.4 90
Deadman Hill 10220 19.0 12.8 148 18.1 13.7 132
Rawah 9020 12.1 9.2 132 14.9 11.4 131
Roach 9700 15.3 13.2 116 18.2 15.7 116
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Basin Index (%) 120 114
S. PLATTE
Black Mountain 8920 9.3 -M * 10.5 -M *
Crow Creek 8330 4.6 7.0 66 7.6 8.4 90
Deadman Hill 10220 19.0 12.8 148 18.1 13.7 132
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Basin Index (%) 119 116
LITTLE SNAKE RIVER
Battle Mountain 7440 10.9 10.4 105 15.2 12.8 119
Divide Peak 8880 18.6 16.8 111 20.7 17.8 116
Elk River 8700 20.1 16.7 120 19.0 16.9 112
Little Snake River 8915 31.0 20.2 153 34.6 25.7 135
Old Battle 10000 34.8 25.3 138 35.5 29.4 121
Sage Creek Basin 7850 15.5 11.3 137 15.2 12.3 124
Sandstone RS 8150 12.3 11.8 104 15.1 15.8 96
Whiskey Park 8950 26.3 23.0 114 27.7 23.6 117
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Basin Index (%) 125 119
UPPER GREEN RIVER
Big Sandy Opening 9080 19.8 10.6 187 21.0 11.1 189
Blind Bull Sum 8650 39.1 19.1 205 -M 16.8 *
East Rim Divide 7930 18.3 9.3 197 19.5 10.1 193
Elkhart Park G.S. 9400 17.1 10.0 171 -M 11.1 *
Gros Ventre Summit 8750 17.8 10.7 166 21.3 10.8 197
Gunsight Pass 9820 18.9 11.5 164 21.6 11.5 188
Kendall R.S. 7740 22.3 10.4 214 -M 12.4 *
Loomis Park 8240 26.0 12.5 208 -M 14.8 *
New Fork Lake 8340 15.7 8.9 176 15.7 9.2 171
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 20.0 10.5 190 25.1 12.1 207
Spring Creek Divide 9000 35.6 19.5 183 -M 20.3 *
Triple Peak 8500 34.5 18.3 189 36.6 21.4 171
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Basin Index (%) 188 187
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 15.5 -M * -M -M *
Hams Fork 7840 17.4 9.9 176 18.2 9.6 190
Hewinta 9500 12.6 8.6 147 14.2 11.4 125
Hickerson Park 9122 8.4 6.3 133 8.4 8.0 105
Hole-in-Rock 9168 6.8 6.0 113 9.1 7.5 121
Indian Creek 9425 36.4 20.0 182 -M 18.8 *
Kelley R.S. 8180 23.5 12.6 187 27.4 15.3 179
Spirit Lk 10235 13.6 -M * 14.7 -M *
Steel Creek Park 10158 15.3 12.4 123 17.1 13.1 131
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Basin Index (%) 159 145
UPPER BEAR RIVER
Bear River RS 8777 13.3 -M * 15.4 -M *
Bug Lake 7987 30.4 15.9 191 28.6 16.2 177
Burts Miller Ranch 8000 8.0 -M * 8.3 -M *
Chalk Creek #1 9171 31.7 19.6 162 32.0 20.6 155
Hayden Fork 9130 23.2 13.0 178 -M 17.2 *
Kelley R.S. 8180 23.5 12.6 187 27.4 15.3 179
Lily Lake 9133 14.3 10.9 131 17.0 14.0 121
Monte Cristo 8932 33.4 22.7 147 -M 21.5 *
Salt River Summit 7760 20.2 11.0 184 25.4 14.1 180
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Basin Index (%) 167 163
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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.