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: FEBRUARY 2 , 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 15.9 10.9 146 23.6 14.2 166
Black Bear 8170 22.9 23.4 98 32.0 25.2 127
Blind Bull Sum 8650 23.0 14.0 164 -M 13.0 *
Cottonwood Creek 7670 16.4 13.1 125 22.7 16.1 141
East Rim Divide 7930 11.3 6.8 166 13.5 7.8 173
Grand Targhee 9260 28.8 23.7 122 26.8 20.8 129
Granite Creek 6770 16.4 10.7 153 21.2 13.8 154
Grassy Lake 7265 24.3 20.5 119 35.6 24.3 147
Gros Ventre Summit 8750 9.9 8.5 116 14.2 8.3 171
Gunsight Pass 9820 10.8 8.3 130 14.7 8.9 165
Lewis Lake Divide 7850 20.7 20.1 103 32.3 23.4 138
Phillips Bench 8200 19.2 16.0 120 28.9 18.4 157
Salt River Summit 7760 12.5 7.9 158 18.0 10.8 167
Snake River Station 6920 14.5 11.0 132 23.3 15.7 148
Spring Creek Divide 9000 20.7 14.6 142 23.2 15.6 149
Thumb Divide 7980 10.9 9.6 114 16.0 12.3 130
Togwotee Pass 9580 18.7 15.1 124 22.4 16.0 140
Two Ocean Plateau 9240 24.5 17.8 138 24.6 17.5 141
Willow Creek 8380 20.2 17.3 117 31.2 21.9 142
Younts Peak 8350 13.2 9.7 136 17.1 10.6 161
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Basin Index (%) 127 146
MADISON-GALLATIN
Black Bear 8170 22.9 23.4 98 32.0 25.2 127
Canyon 7870 10.2 8.2 124 16.4 10.9 150
Madison Plateau 7750 14.0 14.1 99 23.1 17.5 132
West Yellowstone 6700 7.9 7.0 113 15.3 9.8 156
Whiskey Creek 6800 9.0 9.6 94 16.8 13.4 125
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Basin Index (%) 103 135
YELLOWSTONE
Beartooth Lake 9360 16.8 14.0 120 12.9 13.0 99
Burnt Mtn 5880 5.1 2.4 212 9.3 7.9 118
Canyon 7870 10.2 8.2 124 16.4 10.9 150
Cole Creek 7850 6.5 8.4 77 5.0 7.7 65
Evening Star 9200 20.0 16.5 121 26.3 18.1 145
Fisher Creek 9100 19.2 20.8 92 24.3 21.0 116
Northeast Entrance 7350 7.0 6.5 108 12.2 8.4 145
Parker Peak 9400 17.2 13.2 130 19.6 11.5 170
Sylvan Lake 8420 13.7 13.1 105 24.2 15.0 161
Thumb Divide 7980 10.9 9.6 114 16.0 12.3 130
Two Ocean Plateau 9240 24.5 17.8 138 24.6 17.5 141
White Mill 8700 16.0 14.8 108 18.8 15.6 121
Wolverine 7650 -M 7.1 * -M 8.3 *
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Basin Index (%) 115 132
WIND RIVER
Burroughs Creek 8750 12.6 -M * 15.0 -M *
Castle Creek 8400 7.3 -M * 9.4 -M *
Cold Springs 9630 6.5 4.6 141 8.7 6.2 140
Deer Park 9700 18.0 9.4 191 21.5 12.4 173
Hobbs Park 10100 12.5 8.0 156 12.5 7.8 160
Kirwin 9550 10.0 5.9 169 12.8 7.3 175
Little Warm 9370 7.3 6.4 114 12.3 8.2 150
Owl Creek 8975 4.2 3.1 135 5.7 3.6 158
South Pass 9040 17.0 9.1 187 16.3 11.1 147
St. Lawrence Alt 8620 3.4 4.2 81 7.6 5.3 143
Togwotee Pass 9580 18.7 15.1 124 22.4 16.0 140
Townsend Creek 8700 6.9 5.3 130 9.8 7.1 138
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Basin Index (%) 147 152
BIGHORN BASIN
Bald Mtn. 9380 12.8 10.9 117 11.0 10.8 102
Bear Trap Meadow 8200 3.2 3.4 94 4.6 5.2 88
Bone Springs Div 9350 10.2 9.9 103 10.2 9.7 105
Grave Springs 8550 3.7 4.9 76 4.7 6.5 72
Kirwin 9550 10.0 5.9 169 12.8 7.3 175
Marquette 8760 5.1 -M * 8.6 -M *
Middle Powder 7760 4.6 6.4 72 4.8 7.4 65
Owl Creek 8975 4.2 3.1 135 5.7 3.6 158
Powder River Pass 9480 4.0 6.6 61 6.5 7.9 82
Shell Creek 9580 10.4 9.2 113 8.2 9.0 91
Timber Creek 7950 3.7 2.9 128 5.1 4.5 113
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Basin Index (%) 106 102
SHOSHONE RIVER
Blackwater 9780 20.6 14.8 139 23.0 13.4 172
Evening Star 9200 20.0 16.5 121 26.3 18.1 145
Marquette 8760 5.1 -M * 8.6 -M *
Sylvan Road 7120 10.0 7.9 127 20.2 12.0 168
Younts Peak 8350 13.2 9.7 136 17.1 10.6 161
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Basin Index (%) 130 160
POWDER RIVER
Bear Trap Meadow 8200 3.2 3.4 94 4.6 5.2 88
Cloud Peak Reservoir 9860 7.5 8.4 89 9.0 8.0 112
Grave Springs 8550 3.7 4.9 76 4.7 6.5 72
Hansen Sawmill 8360 5.2 4.0 130 7.0 5.1 137
Middle Powder 7760 4.6 6.4 72 4.8 7.4 65
Powder River Pass 9480 4.0 6.6 61 6.5 7.9 82
Soldier Park 8720 7.7 -M * 7.0 -M *
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Basin Index (%) 84 91
TONGUE RIVER
Big Goose 7990 5.5 4.9 112 6.6 6.6 100
Bone Springs Div 9350 10.2 9.9 103 10.2 9.7 105
Burgess Junction 7880 6.1 6.7 91 7.1 7.6 93
Dome Lake 8880 6.7 6.9 97 8.3 8.4 99
Little Goose 8870 6.1 -M * 8.1 -M *
Sucker Creek 8880 7.0 7.1 99 7.0 8.8 80
Tie Creek 6870 4.1 3.4 121 7.3 7.2 101
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Basin Index (%) 102 96
BELLE FOURCHE
Cole Canyon 5910 3.4 3.2 106 4.4 5.7 77
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Basin Index (%) 106 77
CHEYENNE RIVER BASIN
Blind Park 6890 4.5 4.7 96 5.6 7.8 72
North Rapid Creek 6130 4.4 4.3 102 4.7 6.3 75
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Basin Index (%) 99 73
UPPER N. PLATTE
Arapaho Ridge 10960 18.8 13.3 141 19.6 14.2 138
Blackhall Mtn 9820 25.3 -M * 26.8 -M *
Columbine 9160 19.0 14.8 128 21.2 16.5 128
Divide Peak 8880 13.4 12.4 108 16.0 13.7 117
Joe Wright 10120 14.6 13.0 112 20.5 16.2 127
Laprele Creek 8375 6.9 5.4 128 6.7 7.5 89
Med Bow 10500 26.3 -M * -M -M *
North French Creek 10130 16.9 16.1 105 18.4 17.0 108
Never Summer 10280 16.3 12.7 128 13.9 -M *
Old Battle 10000 25.1 19.2 131 26.6 22.6 118
Rawah 9020 9.9 6.3 157 12.6 9.1 138
Sage Creek Basin 7850 11.1 8.5 131 11.7 10.0 117
Sand Lake 10050 19.4 16.6 117 18.8 15.2 124
South Brush Creek 8440 7.2 7.4 97 8.6 9.6 90
Tower 10500 30.5 27.8 110 32.5 25.7 126
Webber Springs 9250 19.9 13.9 143 23.6 17.1 138
Willow Creek Pass 9540 13.1 7.7 170 14.1 8.4 168
Zirkel 9340 27.6 18.7 148 29.8 19.2 155
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Basin Index (%) 126 126
SWEETWATER
Deer Park 9700 18.0 9.4 191 21.5 12.4 173
Larsen Creek 9000 12.4 7.4 168 15.7 -M *
South Pass 9040 17.0 9.1 187 16.3 11.1 147
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Basin Index (%) 183 161
LOWER N. PLATTE
Casper Mtn. 7900 6.5 7.6 86 6.7 9.1 74
Laprele Creek 8375 6.9 5.4 128 6.7 7.5 89
Reno Hill 8400 7.3 7.7 95 7.5 8.9 84
Windy Peak 7900 5.7 4.2 136 6.3 6.4 98
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Basin Index (%) 106 85
LARAMIE RIVER
Brooklyn Lake 10240 16.3 12.0 136 15.1 13.0 116
Cinnabar Park 9574 13.3 13.3 100 16.0 16.1 99
Crow Creek 8330 3.9 5.7 68 5.9 6.4 92
Deadman Hill 10220 14.1 10.2 138 14.0 10.3 136
Rawah 9020 9.9 6.3 157 12.6 9.1 138
Roach 9700 12.4 10.0 124 14.7 11.9 124
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Basin Index (%) 122 117
S. PLATTE
Black Mountain 8920 7.1 -M * 8.4 -M *
Crow Creek 8330 3.9 5.7 68 5.9 6.4 92
Deadman Hill 10220 14.1 10.2 138 14.0 10.3 136
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Basin Index (%) 113 119
LITTLE SNAKE RIVER
Battle Mountain 7440 8.7 7.1 123 11.6 9.7 120
Divide Peak 8880 13.4 12.4 108 16.0 13.7 117
Elk River 8700 15.6 11.4 137 15.7 12.8 123
Little Snake River 8915 22.7 15.7 145 28.4 20.9 136
Old Battle 10000 25.1 19.2 131 26.6 22.6 118
Sage Creek Basin 7850 11.1 8.5 131 11.7 10.0 117
Sandstone RS 8150 10.5 8.1 130 11.9 12.1 98
Whiskey Park 8950 20.0 16.2 123 22.4 18.0 124
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Basin Index (%) 129 120
UPPER GREEN RIVER
Big Sandy Opening 9080 13.5 8.3 163 15.8 8.4 188
Blind Bull Sum 8650 23.0 14.0 164 -M 13.0 *
East Rim Divide 7930 11.3 6.8 166 13.5 7.8 173
Elkhart Park G.S. 9400 10.4 7.5 139 15.5 8.6 180
Gros Ventre Summit 8750 9.9 8.5 116 14.2 8.3 171
Gunsight Pass 9820 10.8 8.3 130 14.7 8.9 165
Kendall R.S. 7740 -M 7.8 * -M 9.4 *
Loomis Park 8240 15.7 9.6 164 20.4 11.4 179
New Fork Lake 8340 10.4 6.8 153 10.7 7.1 151
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 12.3 7.6 162 17.1 9.3 184
Spring Creek Divide 9000 20.7 14.6 142 23.2 15.6 149
Triple Peak 8500 22.3 13.5 165 -M 16.3 *
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Basin Index (%) 152 170
LOWER GREEN RIVER
Blacks Fork Jct 8870 8.4 -M * 10.5 -M *
Buck Pasture 9700 13.9 -M * 16.4 -M *
EF Blacks Fork GS 9360 9.2 -M * 9.8 -M *
Hams Fork 7840 11.3 7.2 157 13.4 7.3 184
Hewinta 9519 8.8 5.8 152 11.0 8.7 126
Hickerson Park 9145 6.1 3.8 161 6.4 6.2 103
Hole-in-Rock 9150 5.1 4.0 128 6.9 5.8 119
Indian Creek 9425 21.6 14.7 147 -M 14.2 *
Kelley R.S. 8180 15.4 9.1 169 20.6 11.7 176
Spirit Lk 10235 9.8 -M * 11.4 -M *
Steel Creek Park 10200 11.9 8.8 135 13.5 10.0 135
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Basin Index (%) 150 144
UPPER BEAR RIVER
Bear River RS 8777 9.8 -M * 11.8 -M *
Bug Lake 7950 21.4 11.0 195 21.0 12.5 168
Burts Miller Ranch 8000 5.6 -M * 6.4 -M *
Chalk Creek #1 8993 21.9 13.4 163 23.4 15.8 148
Hayden Fork 9212 15.7 8.7 180 20.4 13.2 155
Kelley R.S. 8180 15.4 9.1 169 20.6 11.7 176
Lily Lake 9156 10.8 7.4 146 13.1 10.8 121
Monte Cristo 8960 22.0 16.0 138 23.5 16.5 142
Salt River Summit 7760 12.5 7.9 158 18.0 10.8 167
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Basin Index (%) 163 153
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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.