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: FEBRUARY 4 , 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 16.8 10.9 154 24.6 14.3 172
Black Bear 8170 24.1 23.5 103 33.2 25.4 131
Blind Bull Sum 8650 24.2 14.3 169 -M 13.2 *
Cottonwood Creek 7670 16.9 13.4 126 23.3 16.3 143
East Rim Divide 7930 11.7 6.9 170 13.9 7.9 176
Grand Targhee 9260 29.8 24.0 124 27.3 21.1 129
Granite Creek 6770 17.4 10.9 160 21.8 13.9 157
Grassy Lake 7265 25.6 20.9 122 37.0 24.5 151
Gros Ventre Summit 8750 10.4 8.6 121 14.6 8.4 174
Gunsight Pass 9820 11.2 8.4 133 15.2 9.1 167
Lewis Lake Divide 7850 22.3 20.3 110 33.7 23.6 143
Phillips Bench 8200 20.3 16.0 127 29.7 18.7 159
Salt River Summit 7760 12.9 8.1 159 18.5 10.9 170
Snake River Station 6920 15.5 11.3 137 24.6 15.8 156
Spring Creek Divide 9000 21.3 14.9 143 24.1 15.8 153
Thumb Divide 7980 11.8 9.6 123 16.9 12.4 136
Togwotee Pass 9580 19.5 15.2 128 23.4 16.2 144
Two Ocean Plateau 9240 25.7 18.2 141 25.5 17.7 144
Willow Creek 8380 20.8 17.7 118 31.9 22.2 144
Younts Peak 8350 14.2 9.9 143 18.3 10.7 171
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Basin Index (%) 132 150
MADISON-GALLATIN
Black Bear 8170 24.1 23.5 103 33.2 25.4 131
Canyon 7870 10.8 8.4 129 17.0 11.0 155
Madison Plateau 7750 14.8 14.2 104 23.8 17.7 134
West Yellowstone 6700 8.4 7.1 118 15.9 9.9 161
Whiskey Creek 6800 9.6 9.7 99 17.3 13.5 128
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Basin Index (%) 108 138
YELLOWSTONE
Beartooth Lake 9360 17.6 14.2 124 13.8 13.2 105
Burnt Mtn 5880 5.4 2.5 216 9.6 8.1 119
Canyon 7870 10.8 8.4 129 17.0 11.0 155
Cole Creek 7850 7.1 8.6 83 5.6 7.8 72
Evening Star 9200 21.0 16.6 127 27.1 18.4 147
Fisher Creek 9100 20.1 21.1 95 25.0 21.3 117
Northeast Entrance 7350 7.4 6.6 112 12.6 8.5 148
Parker Peak 9400 18.4 13.3 138 20.8 11.6 179
Sylvan Lake 8420 14.3 13.3 108 25.0 15.2 164
Thumb Divide 7980 11.8 9.6 123 16.9 12.4 136
Two Ocean Plateau 9240 25.7 18.2 141 25.5 17.7 144
White Mill 8700 16.5 15.0 110 19.6 15.8 124
Wolverine 7650 -M 7.2 * -M 8.4 *
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Basin Index (%) 119 136
WIND RIVER
Burroughs Creek 8750 13.5 -M * 15.9 -M *
Castle Creek 8400 7.8 -M * 10.0 -M *
Cold Springs 9630 6.8 4.7 145 9.1 6.3 144
Deer Park 9700 18.2 9.5 192 21.6 12.6 171
Hobbs Park 10100 12.8 8.0 160 12.6 8.0 158
Kirwin 9550 10.6 6.0 177 13.6 7.4 184
Little Warm 9370 8.0 6.5 123 13.0 8.4 155
Owl Creek 8975 4.5 3.1 145 6.0 3.6 167
South Pass 9040 17.4 9.5 183 16.6 11.2 148
St. Lawrence Alt 8620 3.9 4.2 93 7.8 5.4 144
Togwotee Pass 9580 19.5 15.2 128 23.4 16.2 144
Townsend Creek 8700 7.2 5.4 133 10.1 7.2 140
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Basin Index (%) 151 155
BIGHORN BASIN
Bald Mtn. 9380 13.1 11.0 119 11.6 10.9 106
Bear Trap Meadow 8200 3.5 3.5 100 5.0 5.2 96
Bone Springs Div 9350 10.4 9.9 105 10.6 9.8 108
Grave Springs 8550 3.9 5.0 78 4.9 6.6 74
Kirwin 9550 10.6 6.0 177 13.6 7.4 184
Marquette 8760 5.6 -M * 9.1 -M *
Middle Powder 7760 4.8 6.4 75 5.3 7.6 70
Owl Creek 8975 4.5 3.1 145 6.0 3.6 167
Powder River Pass 9480 4.1 6.7 61 7.0 8.0 88
Shell Creek 9580 10.8 9.2 117 8.5 9.1 93
Timber Creek 7950 3.9 3.0 130 5.2 4.6 113
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Basin Index (%) 109 107
SHOSHONE RIVER
Blackwater 9780 21.7 14.9 146 24.4 13.5 181
Evening Star 9200 21.0 16.6 127 27.1 18.4 147
Marquette 8760 5.6 -M * 9.1 -M *
Sylvan Road 7120 10.7 7.9 135 20.8 12.1 172
Younts Peak 8350 14.2 9.9 143 18.3 10.7 171
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Basin Index (%) 137 166
POWDER RIVER
Bear Trap Meadow 8200 3.5 3.5 100 5.0 5.2 96
Cloud Peak Reservoir 9860 7.8 8.5 92 9.5 8.0 119
Grave Springs 8550 3.9 5.0 78 4.9 6.6 74
Hansen Sawmill 8360 5.4 4.0 135 7.2 5.2 138
Middle Powder 7760 4.8 6.4 75 5.3 7.6 70
Powder River Pass 9480 4.1 6.7 61 7.0 8.0 88
Soldier Park 8720 8.1 -M * 7.3 -M *
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Basin Index (%) 87 96
TONGUE RIVER
Big Goose 7990 5.9 5.0 118 6.9 6.7 103
Bone Springs Div 9350 10.4 9.9 105 10.6 9.8 108
Burgess Junction 7880 6.4 6.8 94 7.6 7.6 100
Dome Lake 8880 7.0 7.0 100 8.6 8.6 100
Little Goose 8870 6.4 -M * 8.5 -M *
Sucker Creek 8880 7.3 7.2 101 7.5 8.9 84
Tie Creek 6870 4.5 3.4 132 7.7 7.2 107
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Basin Index (%) 106 100
BELLE FOURCHE
Cole Canyon 5910 3.6 3.3 109 4.7 5.8 81
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Basin Index (%) 109 81
CHEYENNE RIVER BASIN
Blind Park 6890 4.7 4.9 96 5.8 7.9 73
North Rapid Creek 6130 4.7 4.4 107 5.1 6.4 80
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Basin Index (%) 101 76
UPPER N. PLATTE
Arapaho Ridge 10960 19.6 13.5 145 20.3 14.5 140
Blackhall Mtn 9820 26.2 -M * 27.0 -M *
Columbine 9160 19.8 15.0 132 22.0 16.8 131
Divide Peak 8880 13.8 12.7 109 16.3 14.0 116
Joe Wright 10120 15.2 13.2 115 21.0 16.4 128
Laprele Creek 8375 7.2 5.5 131 7.0 7.7 91
Med Bow 10500 27.2 -M * 25.7 -M *
North French Creek 10130 17.4 16.3 107 19.0 17.3 110
Never Summer 10280 16.6 12.9 129 14.1 -M *
Old Battle 10000 25.9 19.6 132 27.3 22.9 119
Rawah 9020 10.0 6.4 156 12.8 9.2 139
Sage Creek Basin 7850 11.3 8.7 130 11.9 10.0 119
Sand Lake 10050 20.1 16.8 120 19.2 15.4 125
South Brush Creek 8440 7.4 7.5 99 8.9 9.7 92
Tower 10500 32.4 28.2 115 34.2 26.1 131
Webber Springs 9250 20.7 14.4 144 24.4 17.4 140
Willow Creek Pass 9540 -M 7.9 * -M 8.4 *
Zirkel 9340 28.9 19.0 152 31.0 19.6 158
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Basin Index (%) 127 127
SWEETWATER
Deer Park 9700 18.2 9.5 192 21.6 12.6 171
Larsen Creek 9000 12.7 7.5 169 16.0 -M *
South Pass 9040 17.4 9.5 183 16.6 11.2 148
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Basin Index (%) 182 161
LOWER N. PLATTE
Casper Mtn. 7900 6.7 7.7 87 6.9 9.2 75
Laprele Creek 8375 7.2 5.5 131 7.0 7.7 91
Reno Hill 8400 7.7 7.8 99 7.9 9.2 86
Windy Peak 7900 5.9 4.3 137 6.6 6.5 102
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Basin Index (%) 109 87
LARAMIE RIVER
Brooklyn Lake 10240 17.0 12.1 140 15.6 13.2 118
Cinnabar Park 9574 13.7 13.5 101 16.5 16.5 100
Crow Creek 8330 4.0 5.7 70 6.0 6.5 92
Deadman Hill 10220 14.7 10.4 141 14.5 10.5 138
Rawah 9020 10.0 6.4 156 12.8 9.2 139
Roach 9700 12.7 10.2 125 15.1 12.1 125
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Basin Index (%) 124 118
S. PLATTE
Black Mountain 8920 7.3 -M * 8.5 -M *
Crow Creek 8330 4.0 5.7 70 6.0 6.5 92
Deadman Hill 10220 14.7 10.4 141 14.5 10.5 138
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Basin Index (%) 116 121
LITTLE SNAKE RIVER
Battle Mountain 7440 8.8 7.2 122 11.9 9.9 120
Divide Peak 8880 13.8 12.7 109 16.3 14.0 116
Elk River 8700 15.9 11.7 136 15.9 13.1 121
Little Snake River 8915 -M 16.0 * -M 21.3 *
Old Battle 10000 25.9 19.6 132 27.3 22.9 119
Sage Creek Basin 7850 11.3 8.7 130 11.9 10.0 119
Sandstone RS 8150 10.7 8.3 129 11.9 12.3 97
Whiskey Park 8950 20.7 16.6 125 23.1 18.3 126
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Basin Index (%) 126 118
UPPER GREEN RIVER
Big Sandy Opening 9080 13.7 8.5 161 16.0 8.5 188
Blind Bull Sum 8650 24.2 14.3 169 -M 13.2 *
East Rim Divide 7930 11.7 6.9 170 13.9 7.9 176
Elkhart Park G.S. 9400 10.8 7.7 140 16.0 8.7 184
Gros Ventre Summit 8750 10.4 8.6 121 14.6 8.4 174
Gunsight Pass 9820 11.2 8.4 133 15.2 9.1 167
Kendall R.S. 7740 14.1 7.8 181 18.4 9.5 194
Loomis Park 8240 16.2 9.8 165 20.8 11.6 179
New Fork Lake 8340 10.8 6.8 159 10.9 7.2 151
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 12.6 7.8 162 17.3 9.5 182
Spring Creek Divide 9000 21.3 14.9 143 24.1 15.8 153
Triple Peak 8500 23.2 13.5 172 -M 16.5 *
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Basin Index (%) 157 174
LOWER GREEN RIVER
Blacks Fork Jct 8870 8.3 -M * 10.6 -M *
Buck Pasture 9700 14.0 -M * 16.5 -M *
EF Blacks Fork GS 9360 10.0 -M * 9.5 -M *
Hams Fork 7840 11.8 7.4 159 13.6 7.4 184
Hewinta 9519 8.9 6.0 148 11.1 8.9 125
Hickerson Park 9145 6.1 3.9 156 6.4 6.3 102
Hole-in-Rock 9150 5.0 4.1 122 6.9 5.9 117
Indian Creek 9425 22.2 14.8 150 -M 14.4 *
Kelley R.S. 8180 15.8 9.2 172 21.0 11.8 178
Spirit Lk 10235 9.8 -M * 11.4 -M *
Steel Creek Park 10200 12.0 8.9 135 13.5 10.2 132
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Basin Index (%) 151 144
UPPER BEAR RIVER
Bear River RS 8777 9.9 -M * 11.9 -M *
Bug Lake 7950 21.9 11.4 192 20.3 12.7 160
Burts Miller Ranch 8000 5.6 -M * 6.1 -M *
Chalk Creek #1 8993 22.2 13.4 166 23.6 16.0 148
Hayden Fork 9212 15.8 8.8 180 20.6 13.5 153
Kelley R.S. 8180 15.8 9.2 172 21.0 11.8 178
Lily Lake 9156 10.9 7.5 145 13.3 11.0 121
Monte Cristo 8960 22.4 16.1 139 -M 16.7 *
Salt River Summit 7760 12.9 8.1 159 18.5 10.9 170
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Basin Index (%) 164 155
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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.