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 10 , 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 27.1 13.8 196 -M 18.2 *
Black Bear 8170 41.8 31.3 134 46.7 32.9 142
Blind Bull Sum 8650 40.0 19.3 207 -M 16.8 *
Cottonwood Creek 7670 26.8 18.4 146 33.8 20.7 163
East Rim Divide 7930 18.6 9.4 198 19.7 10.2 193
Grand Targhee 9260 39.1 31.7 123 -M 25.5 *
Granite Creek 6770 29.9 14.6 205 -M 17.5 *
Grassy Lake 7265 35.5 27.5 129 49.0 31.1 158
Gros Ventre Summit 8750 17.9 10.8 166 21.9 10.8 203
Gunsight Pass 9820 19.3 11.5 168 21.9 11.6 189
Lewis Lake Divide 7850 37.0 26.3 141 -M 30.6 *
Phillips Bench 8200 34.2 21.1 162 39.5 24.1 164
Salt River Summit 7760 20.2 11.1 182 -M 14.2 *
Snake River Station 6920 21.8 15.1 144 32.1 19.6 164
Spring Creek Divide 9000 35.9 19.6 183 -M 20.3 *
Thumb Divide 7980 21.5 13.1 164 -M 15.7 *
Togwotee Pass 9580 29.8 19.4 154 34.0 20.6 165
Two Ocean Plateau 9240 -M 22.9 * -M 23.2 *
Willow Creek 8380 29.7 24.1 123 44.4 28.3 157
Younts Peak 8350 26.0 12.3 211 27.9 13.4 208
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Basin Index (%) 158 166
MADISON-GALLATIN
Black Bear 8170 41.8 31.3 134 46.7 32.9 142
Canyon 7870 16.7 11.4 146 22.9 13.9 165
Madison Plateau 7750 24.8 19.2 129 32.3 22.7 142
West Yellowstone 6700 12.4 9.6 129 20.7 12.4 167
Whiskey Creek 6800 15.2 13.1 116 23.8 17.3 138
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Basin Index (%) 131 148
YELLOWSTONE
Beartooth Lake 9360 28.4 18.2 156 23.9 16.7 143
Burnt Mtn 5880 6.0 4.4 136 11.9 10.2 117
Canyon 7870 16.7 11.4 146 22.9 13.9 165
Cole Creek 7850 9.3 11.1 84 6.5 9.8 66
Evening Star 9200 33.6 20.8 162 34.4 23.3 148
Fisher Creek 9100 37.4 26.9 139 40.8 27.0 151
Northeast Entrance 7350 12.1 8.6 141 17.4 10.5 166
Parker Peak 9400 29.2 16.6 176 23.7 14.9 159
Sylvan Lake 8420 22.0 16.9 130 33.3 19.0 175
Thumb Divide 7980 21.5 13.1 164 -M 15.7 *
Two Ocean Plateau 9240 -M 22.9 * -M 23.2 *
White Mill 8700 29.7 19.1 155 30.7 20.2 152
Wolverine 7650 13.3 9.0 148 18.8 10.5 179
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Basin Index (%) 147 150
WIND RIVER
Burroughs Creek 8750 22.3 -M * 24.2 -M *
Castle Creek 8400 12.0 -M * 14.3 -M *
Cold Springs 9630 12.5 5.9 212 14.8 8.0 185
Deer Park 9700 28.3 12.0 236 30.9 16.2 191
Hobbs Park 10100 22.3 10.9 205 20.4 10.3 198
Kirwin 9550 17.8 7.7 231 20.5 9.4 218
Little Warm 9370 15.4 8.6 179 20.9 10.5 199
Owl Creek 8975 7.0 4.3 163 8.8 4.6 191
South Pass 9040 26.2 12.5 210 23.5 14.4 163
St. Lawrence Alt 8620 7.1 5.8 122 12.0 7.0 171
Togwotee Pass 9580 29.8 19.4 154 34.0 20.6 165
Townsend Creek 8700 12.5 7.4 169 15.7 9.3 169
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Basin Index (%) 189 183
BIGHORN BASIN
Bald Mtn. 9380 16.4 15.9 103 14.2 13.9 102
Bear Trap Meadow 8200 5.0 4.6 109 6.0 6.5 92
Bone Springs Div 9350 14.8 13.3 111 14.1 12.5 113
Grave Springs 8550 5.8 7.4 78 6.2 8.3 75
Kirwin 9550 17.8 7.7 231 20.5 9.4 218
Marquette 8760 7.6 -M * 11.8 -M *
Middle Powder 7760 6.6 8.8 75 6.1 9.2 66
Owl Creek 8975 7.0 4.3 163 8.8 4.6 191
Powder River Pass 9480 6.8 8.4 81 9.9 10.1 98
Shell Creek 9580 13.8 12.2 113 10.9 11.1 98
Timber Creek 7950 5.4 4.0 135 6.8 5.5 124
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Basin Index (%) 115 114
SHOSHONE RIVER
Blackwater 9780 33.4 19.0 176 36.1 17.2 210
Evening Star 9200 33.6 20.8 162 34.4 23.3 148
Marquette 8760 7.6 -M * 11.8 -M *
Sylvan Road 7120 15.7 10.0 157 27.3 14.6 187
Younts Peak 8350 26.0 12.3 211 27.9 13.4 208
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Basin Index (%) 175 184
POWDER RIVER
Bear Trap Meadow 8200 5.0 4.6 109 6.0 6.5 92
Cloud Peak Reservoir 9860 11.1 11.7 95 12.3 10.3 119
Grave Springs 8550 5.8 7.4 78 6.2 8.3 75
Hansen Sawmill 8360 7.1 5.1 139 9.0 6.5 138
Middle Powder 7760 6.6 8.8 75 6.1 9.2 66
Powder River Pass 9480 6.8 8.4 81 9.9 10.1 98
Soldier Park 8720 11.0 -M * 8.9 -M *
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Basin Index (%) 92 97
TONGUE RIVER
Big Goose 7990 8.0 6.8 118 9.0 8.4 107
Bone Springs Div 9350 14.8 13.3 111 14.1 12.5 113
Burgess Junction 7880 8.2 9.2 89 8.7 9.6 91
Dome Lake 8880 11.9 9.3 128 11.5 10.6 108
Little Goose 8870 8.8 -M * 11.2 -M *
Sucker Creek 8880 9.6 10.0 96 9.4 11.3 83
Tie Creek 6870 5.5 4.7 117 9.5 9.0 106
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Basin Index (%) 109 101
BELLE FOURCHE
Cole Canyon 5910 3.1 5.0 62 5.8 7.4 78
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Basin Index (%) 62 78
CHEYENNE RIVER BASIN
Blind Park 6890 4.0 6.7 60 7.0 9.9 71
North Rapid Creek 6130 4.6 6.2 74 5.8 8.1 72
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Basin Index (%) 67 71
UPPER N. PLATTE
Arapaho Ridge 10960 23.4 17.6 133 23.5 18.7 126
Blackhall Mtn 9820 34.4 -M * -M -M *
Columbine 9160 24.4 21.0 116 25.6 21.6 119
Divide Peak 8880 18.7 16.9 111 20.8 17.9 116
Joe Wright 10120 17.9 18.3 98 25.6 21.3 120
Laprele Creek 8375 11.1 8.4 132 10.3 10.0 103
Med Bow 10500 35.3 -M * 30.8 -M *
North French Creek 10130 23.2 22.8 102 24.0 22.3 108
Never Summer 10280 21.1 16.9 125 17.1 -M *
Old Battle 10000 34.9 25.4 137 35.6 29.6 120
Rawah 9020 11.8 9.2 128 15.0 11.5 130
Sage Creek Basin 7850 15.6 11.5 136 15.2 12.3 124
Sand Lake 10050 27.2 22.4 121 24.9 20.2 123
South Brush Creek 8440 10.6 11.1 95 11.2 12.5 90
Tower 10500 39.0 38.0 103 41.4 33.8 122
Webber Springs 9250 28.0 20.1 139 31.3 22.4 140
Willow Creek Pass 9540 16.2 10.3 157 17.1 10.9 157
Zirkel 9340 39.7 25.2 158 39.7 24.5 162
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Basin Index (%) 123 125
SWEETWATER
Deer Park 9700 28.3 12.0 236 30.9 16.2 191
Larsen Creek 9000 19.3 10.3 187 21.1 -M *
South Pass 9040 26.2 12.5 210 23.5 14.4 163
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Basin Index (%) 212 178
LOWER N. PLATTE
Casper Mtn. 7900 10.8 11.4 95 10.2 11.8 86
Laprele Creek 8375 11.1 8.4 132 10.3 10.0 103
Reno Hill 8400 10.9 11.2 97 11.4 12.0 95
Windy Peak 7900 9.7 6.5 149 9.9 8.4 118
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Basin Index (%) 113 99
LARAMIE RIVER
Brooklyn Lake 10240 23.1 16.7 138 20.7 17.3 120
Cinnabar Park 9574 17.8 17.8 100 20.2 20.6 98
Crow Creek 8330 4.7 7.1 66 7.6 8.4 90
Deadman Hill 10220 19.0 12.9 147 18.1 13.8 131
Rawah 9020 11.8 9.2 128 15.0 11.5 130
Roach 9700 15.3 13.3 115 18.2 15.8 115
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Basin Index (%) 119 114
S. PLATTE
Black Mountain 8920 9.4 -M * 10.5 -M *
Crow Creek 8330 4.7 7.1 66 7.6 8.4 90
Deadman Hill 10220 19.0 12.9 147 18.1 13.8 131
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Basin Index (%) 118 116
LITTLE SNAKE RIVER
Battle Mountain 7440 10.9 10.5 104 15.2 12.8 119
Divide Peak 8880 18.7 16.9 111 20.8 17.9 116
Elk River 8700 20.4 16.8 121 19.0 17.0 112
Little Snake River 8915 31.0 20.3 153 35.2 25.7 137
Old Battle 10000 34.9 25.4 137 35.6 29.6 120
Sage Creek Basin 7850 15.6 11.5 136 15.2 12.3 124
Sandstone RS 8150 11.8 11.8 100 15.1 15.9 95
Whiskey Park 8950 26.5 23.2 114 27.8 23.8 117
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Basin Index (%) 124 119
UPPER GREEN RIVER
Big Sandy Opening 9080 19.9 10.7 186 21.1 11.1 190
Blind Bull Sum 8650 40.0 19.3 207 -M 16.8 *
East Rim Divide 7930 18.6 9.4 198 19.7 10.2 193
Elkhart Park G.S. 9400 17.6 10.0 176 21.7 11.1 195
Gros Ventre Summit 8750 17.9 10.8 166 21.9 10.8 203
Gunsight Pass 9820 19.3 11.5 168 21.9 11.6 189
Kendall R.S. 7740 23.2 10.5 221 27.2 12.5 218
Loomis Park 8240 26.6 12.6 211 29.6 14.9 199
New Fork Lake 8340 16.1 9.0 179 16.0 9.3 172
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 20.2 10.6 191 25.2 12.1 208
Spring Creek Divide 9000 35.9 19.6 183 -M 20.3 *
Triple Peak 8500 35.0 18.5 189 37.1 21.5 173
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Basin Index (%) 190 193
LOWER GREEN RIVER
Blacks Fork Jct 8869 10.7 -M * 13.6 -M *
Buck Pasture 9632 18.7 -M * 20.6 -M *
EF Blacks Fork GS 9360 15.4 -M * -M -M *
Hams Fork 7840 17.4 9.9 176 18.3 9.6 191
Hewinta 9500 12.6 8.6 147 14.2 11.5 123
Hickerson Park 9122 8.2 6.4 128 8.5 8.1 105
Hole-in-Rock 9168 6.9 6.0 115 9.2 7.6 121
Indian Creek 9425 36.5 20.2 181 -M 18.9 *
Kelley R.S. 8180 23.5 12.6 187 28.1 15.4 182
Spirit Lk 10235 13.6 -M * 14.7 -M *
Steel Creek Park 10158 15.3 12.5 122 17.2 13.2 130
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Basin Index (%) 158 146
UPPER BEAR RIVER
Bear River RS 8777 13.1 -M * 15.4 -M *
Bug Lake 7987 30.4 16.0 190 30.0 16.3 184
Burts Miller Ranch 8000 7.6 -M * 8.4 -M *
Chalk Creek #1 9171 31.7 19.8 160 32.0 20.7 155
Hayden Fork 9130 23.1 13.2 175 -M 17.4 *
Kelley R.S. 8180 23.5 12.6 187 28.1 15.4 182
Lily Lake 9133 14.3 11.0 130 17.0 14.0 121
Monte Cristo 8932 33.5 22.8 147 30.9 21.7 142
Salt River Summit 7760 20.2 11.1 182 -M 14.2 *
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Basin Index (%) 166 157
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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.