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 SATURDAY: JANUARY 21 , 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 15.4 10.0 154 23.2 12.6 184
Black Bear 8170 21.7 21.8 100 30.8 22.4 138
Blind Bull Sum 8650 21.5 12.7 169 -M 11.7 *
Cottonwood Creek 7670 14.9 11.2 133 21.1 14.4 147
East Rim Divide 7930 10.2 6.1 167 12.5 7.0 179
Grand Targhee 9260 27.4 21.5 127 25.6 18.5 138
Granite Creek 6770 15.0 9.2 163 20.7 12.2 170
Grassy Lake 7265 22.5 17.5 129 33.8 21.5 157
Gros Ventre Summit 8750 9.3 7.7 121 13.6 7.5 181
Gunsight Pass 9820 10.1 7.7 131 14.0 8.1 173
Lewis Lake Divide 7850 19.4 17.4 111 31.1 21.0 148
Phillips Bench 8200 17.5 15.6 112 26.5 16.4 162
Salt River Summit 7760 11.2 6.9 162 16.5 9.7 170
Snake River Station 6920 13.9 9.4 148 23.0 13.9 165
Spring Creek Divide 9000 19.3 12.6 153 22.6 14.0 161
Thumb Divide 7980 10.1 8.4 120 15.6 11.0 142
Togwotee Pass 9580 17.6 13.2 133 21.3 14.5 147
Two Ocean Plateau 9240 23.3 15.8 147 23.7 15.8 150
Willow Creek 8380 18.5 15.2 122 29.3 19.6 149
Younts Peak 8350 12.1 8.8 138 16.5 9.6 172
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Basin Index (%) 133 156
MADISON-GALLATIN
Black Bear 8170 21.7 21.8 100 30.8 22.4 138
Canyon 7870 9.2 7.5 123 15.4 9.7 159
Madison Plateau 7750 13.0 13.2 98 22.2 15.7 141
West Yellowstone 6700 7.5 6.6 114 14.9 8.7 171
Whiskey Creek 6800 8.4 8.8 95 16.3 12.1 135
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Basin Index (%) 103 145
YELLOWSTONE
Beartooth Lake 9360 15.2 12.8 119 11.5 11.6 99
Burnt Mtn 5880 4.5 2.3 196 8.4 7.5 112
Canyon 7870 9.2 7.5 123 15.4 9.7 159
Cole Creek 7850 6.1 7.5 81 5.2 7.2 72
Evening Star 9200 18.3 14.4 127 24.6 16.4 150
Fisher Creek 9100 17.9 19.2 93 23.1 18.8 123
Northeast Entrance 7350 6.5 5.7 114 11.6 7.6 153
Parker Peak 9400 16.0 12.0 133 18.8 10.5 179
Sylvan Lake 8420 12.6 11.6 109 23.0 13.6 169
Thumb Divide 7980 10.1 8.4 120 15.6 11.0 142
Two Ocean Plateau 9240 23.3 15.8 147 23.7 15.8 150
White Mill 8700 14.9 13.4 111 17.9 14.0 128
Wolverine 7650 -M 6.3 * -M 7.6 *
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Basin Index (%) 118 138
WIND RIVER
Burroughs Creek 8750 11.7 -M * 14.5 -M *
Castle Creek 8400 6.6 -M * 8.7 -M *
Cold Springs 9630 5.9 4.2 140 8.4 5.8 145
Deer Park 9700 17.2 7.9 218 20.8 11.4 182
Hobbs Park 10100 11.9 7.5 159 11.8 7.2 164
Kirwin 9550 9.4 5.3 177 12.4 6.8 182
Little Warm 9370 6.4 5.8 110 11.5 7.5 153
Owl Creek 8975 3.5 3.0 117 5.1 3.3 155
South Pass 9040 16.4 8.1 202 16.1 10.1 159
St. Lawrence Alt 8620 3.0 3.7 81 7.1 5.0 142
Togwotee Pass 9580 17.6 13.2 133 21.3 14.5 147
Townsend Creek 8700 6.3 4.6 137 9.2 6.7 137
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Basin Index (%) 154 158
BIGHORN BASIN
Bald Mtn. 9380 11.9 10.1 118 10.5 9.8 107
Bear Trap Meadow 8200 2.8 3.1 90 4.4 4.9 90
Bone Springs Div 9350 9.2 9.1 101 9.7 8.8 110
Grave Springs 8550 3.4 4.6 74 4.4 6.0 73
Kirwin 9550 9.4 5.3 177 12.4 6.8 182
Marquette 8760 4.4 -M * 7.8 -M *
Middle Powder 7760 4.3 6.1 70 4.9 6.9 71
Owl Creek 8975 3.5 3.0 117 5.1 3.3 155
Powder River Pass 9480 3.6 5.9 61 6.5 7.2 90
Shell Creek 9580 9.8 8.6 114 8.0 8.0 100
Timber Creek 7950 3.3 2.8 118 4.7 4.3 109
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Basin Index (%) 104 107
SHOSHONE RIVER
Blackwater 9780 19.0 13.1 145 22.8 12.2 187
Evening Star 9200 18.3 14.4 127 24.6 16.4 150
Marquette 8760 4.4 -M * 7.8 -M *
Sylvan Road 7120 9.2 7.2 128 19.3 11.0 175
Younts Peak 8350 12.1 8.8 138 16.5 9.6 172
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Basin Index (%) 135 169
POWDER RIVER
Bear Trap Meadow 8200 2.8 3.1 90 4.4 4.9 90
Cloud Peak Reservoir 9860 6.8 7.6 89 8.7 7.4 118
Grave Springs 8550 3.4 4.6 74 4.4 6.0 73
Hansen Sawmill 8360 4.5 3.7 122 6.3 4.7 134
Middle Powder 7760 4.3 6.1 70 4.9 6.9 71
Powder River Pass 9480 3.6 5.9 61 6.5 7.2 90
Soldier Park 8720 7.2 -M * 6.5 -M *
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Basin Index (%) 82 95
TONGUE RIVER
Big Goose 7990 5.1 4.4 116 6.1 6.0 102
Bone Springs Div 9350 9.2 9.1 101 9.7 8.8 110
Burgess Junction 7880 5.3 6.2 85 6.5 7.0 93
Dome Lake 8880 6.2 6.4 97 7.7 7.8 99
Little Goose 8870 5.5 -M * 7.7 -M *
Sucker Creek 8880 6.2 6.6 94 6.6 8.0 82
Tie Creek 6870 3.7 3.1 119 6.7 6.7 100
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Basin Index (%) 100 98
BELLE FOURCHE
Cole Canyon 5910 3.2 3.0 107 4.2 5.3 79
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Basin Index (%) 107 79
CHEYENNE RIVER BASIN
Blind Park 6890 3.8 4.1 93 4.9 7.2 68
North Rapid Creek 6130 4.0 3.8 105 4.3 5.8 74
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Basin Index (%) 99 71
UPPER N. PLATTE
Arapaho Ridge 10960 17.9 11.3 158 18.7 13.0 144
Blackhall Mtn 9820 23.5 -M * 24.6 -M *
Columbine 9160 17.9 13.0 138 19.7 14.7 134
Divide Peak 8880 12.2 11.1 110 14.6 12.5 117
Joe Wright 10120 13.9 12.0 116 19.4 14.7 132
Laprele Creek 8375 6.5 5.2 125 6.2 7.0 89
Med Bow 10500 24.6 -M * 23.6 -M *
North French Creek 10130 15.6 14.5 108 17.2 15.3 112
Never Summer 10280 -M 11.0 * -M -M *
Old Battle 10000 22.9 16.5 139 24.8 20.4 122
Rawah 9020 9.4 5.7 165 11.9 8.6 138
Sage Creek Basin 7850 9.9 7.5 132 10.3 8.8 117
Sand Lake 10050 18.2 15.0 121 17.6 13.8 128
South Brush Creek 8440 6.6 6.5 102 7.8 8.7 90
Tower 10500 28.2 24.2 117 30.6 23.2 132
Webber Springs 9250 18.1 12.3 147 22.0 15.5 142
Willow Creek Pass 9540 12.6 6.6 191 13.3 7.6 175
Zirkel 9340 25.8 16.3 158 26.5 16.9 157
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Basin Index (%) 133 130
SWEETWATER
Deer Park 9700 17.2 7.9 218 20.8 11.4 182
Larsen Creek 9000 11.5 6.4 180 14.9 -M *
South Pass 9040 16.4 8.1 202 16.1 10.1 159
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Basin Index (%) 201 172
LOWER N. PLATTE
Casper Mtn. 7900 5.9 6.9 86 6.2 8.4 74
Laprele Creek 8375 6.5 5.2 125 6.2 7.0 89
Reno Hill 8400 -M 7.0 * -M 8.3 *
Windy Peak 7900 5.1 3.8 134 5.8 5.9 98
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Basin Index (%) 110 85
LARAMIE RIVER
Brooklyn Lake 10240 15.2 11.2 136 14.1 11.7 121
Cinnabar Park 9574 12.6 11.9 106 15.4 14.5 106
Crow Creek 8330 4.0 5.4 74 5.7 6.1 93
Deadman Hill 10220 13.6 8.7 156 13.5 9.4 144
Rawah 9020 9.4 5.7 165 11.9 8.6 138
Roach 9700 11.7 9.2 127 13.9 10.8 129
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Basin Index (%) 128 122
S. PLATTE
Black Mountain 8920 7.0 -M * 8.2 -M *
Crow Creek 8330 4.0 5.4 74 5.7 6.1 93
Deadman Hill 10220 13.6 8.7 156 13.5 9.4 144
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Basin Index (%) 125 124
LITTLE SNAKE RIVER
Battle Mountain 7440 8.1 6.1 133 10.7 8.9 120
Divide Peak 8880 12.2 11.1 110 14.6 12.5 117
Elk River 8700 14.9 9.8 152 14.8 11.6 128
Little Snake River 8915 20.9 12.9 162 26.3 18.7 141
Old Battle 10000 22.9 16.5 139 24.8 20.4 122
Sage Creek Basin 7850 9.9 7.5 132 10.3 8.8 117
Sandstone RS 8150 10.0 7.2 139 10.8 10.9 99
Whiskey Park 8950 18.3 14.7 124 20.9 16.0 131
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Basin Index (%) 137 124
UPPER GREEN RIVER
Big Sandy Opening 9080 12.4 7.1 175 14.8 7.7 192
Blind Bull Sum 8650 21.5 12.7 169 -M 11.7 *
East Rim Divide 7930 10.2 6.1 167 12.5 7.0 179
Elkhart Park G.S. 9400 9.2 6.9 133 14.5 7.8 186
Gros Ventre Summit 8750 9.3 7.7 121 13.6 7.5 181
Gunsight Pass 9820 10.1 7.7 131 14.0 8.1 173
Kendall R.S. 7740 11.8 6.8 174 16.1 8.4 192
Loomis Park 8240 14.2 8.5 167 19.3 10.2 189
New Fork Lake 8340 9.4 6.2 152 9.8 6.4 153
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 11.4 6.6 173 16.1 8.4 192
Spring Creek Divide 9000 19.3 12.6 153 22.6 14.0 161
Triple Peak 8500 20.9 11.7 179 23.1 14.4 160
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Basin Index (%) 159 177
LOWER GREEN RIVER
Blacks Fork Jct 8870 7.8 -M * 10.0 -M *
Buck Pasture 9700 12.1 -M * 14.7 -M *
EF Blacks Fork GS 9360 8.6 -M * 9.3 -M *
Hams Fork 7840 10.3 6.3 163 12.3 6.7 184
Hewinta 9519 8.2 5.1 161 10.5 7.9 133
Hickerson Park 9145 5.7 3.3 173 6.0 5.7 105
Hole-in-Rock 9150 4.7 3.7 127 6.6 5.4 122
Indian Creek 9425 20.0 13.3 150 -M 12.7 *
Kelley R.S. 8180 13.9 7.9 176 19.1 10.5 182
Spirit Lk 10235 8.6 -M * 10.2 -M *
Steel Creek Park 10200 11.0 7.6 145 12.7 9.0 141
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Basin Index (%) 156 149
UPPER BEAR RIVER
Bear River RS 8777 8.9 -M * 10.9 -M *
Bug Lake 7950 -M 9.1 * -M 11.3 *
Burts Miller Ranch 8000 5.0 -M * 5.5 -M *
Chalk Creek #1 8993 19.8 12.0 165 -M 14.2 *
Hayden Fork 9212 13.9 7.7 181 18.4 12.0 153
Kelley R.S. 8180 13.9 7.9 176 19.1 10.5 182
Lily Lake 9156 10.4 6.7 155 12.1 9.8 123
Monte Cristo 8960 19.1 14.0 136 -M 14.8 *
Salt River Summit 7760 11.2 6.9 162 16.5 9.7 170
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Basin Index (%) 160 157*
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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.