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 WEDNESDAY: DECEMBER 28 , 2016
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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 10.3 6.8 151 18.0 9.4 191
Black Bear 8170 15.7 16.5 95 24.9 16.8 148
Blind Bull Sum 8650 13.6 8.6 158 15.0 8.8 170
Cottonwood Creek 7670 9.5 7.9 120 16.5 10.5 157
East Rim Divide 7930 6.8 4.1 166 9.4 5.2 181
Grand Targhee 9260 23.2 16.9 137 21.9 14.4 152
Granite Creek 6770 9.4 5.8 162 15.7 8.8 178
Grassy Lake 7265 14.9 11.7 127 26.9 15.9 169
Gros Ventre Summit 8750 6.3 5.7 111 10.5 5.8 181
Gunsight Pass 9820 6.9 5.6 123 11.2 6.0 187
Lewis Lake Divide 7850 12.4 12.4 100 23.9 15.8 151
Phillips Bench 8200 11.2 10.1 111 20.0 12.0 167
Salt River Summit 7760 5.3 4.5 118 11.2 7.0 160
Snake River Station 6920 9.7 5.8 167 18.0 10.3 175
Spring Creek Divide 9000 11.9 9.2 129 17.3 10.2 170
Thumb Divide 7980 6.4 5.8 110 12.4 8.2 151
Togwotee Pass 9580 13.3 10.4 128 17.0 10.8 157
Two Ocean Plateau 9240 17.6 11.8 149 18.9 12.0 158
Willow Creek 8380 11.2 10.0 112 22.1 14.8 149
Younts Peak 8350 7.6 6.7 113 12.5 7.2 174
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Basin Index (%) 127 164
MADISON-GALLATIN
Black Bear 8170 15.7 16.5 95 24.9 16.8 148
Canyon 7870 6.5 5.0 130 12.7 7.4 172
Madison Plateau 7750 9.1 9.8 93 18.9 11.5 164
West Yellowstone 6700 5.4 4.3 126 12.8 6.6 194
Whiskey Creek 6800 5.9 6.0 98 13.7 9.1 151
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Basin Index (%) 102 161
YELLOWSTONE
Beartooth Lake 9360 11.5 9.4 122 -M 8.7 *
Burnt Mtn 5880 3.2 1.9 168 7.1 6.6 108
Canyon 7870 6.5 5.0 130 12.7 7.4 172
Cole Creek 7850 4.6 6.1 75 4.6 6.3 73
Evening Star 9200 13.9 10.6 131 19.7 12.5 158
Fisher Creek 9100 13.5 14.0 96 18.6 14.2 131
Northeast Entrance 7350 4.5 3.6 125 9.8 5.8 169
Parker Peak 9400 12.1 9.3 130 15.1 8.1 186
Sylvan Lake 8420 9.4 8.8 107 19.7 10.6 186
Thumb Divide 7980 6.4 5.8 110 12.4 8.2 151
Two Ocean Plateau 9240 17.6 11.8 149 18.9 12.0 158
White Mill 8700 11.1 9.3 119 14.4 10.7 135
Wolverine 7650 6.6 4.4 150 10.3 6.0 172
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Basin Index (%) 121 151
WIND RIVER
Burroughs Creek 8750 8.1 -M * 10.6 -M *
Castle Creek 8400 4.7 -M * 6.9 -M *
Cold Springs 9630 4.1 3.0 137 6.3 4.8 131
Deer Park 9700 9.5 6.4 148 13.3 8.2 162
Hobbs Park 10100 7.9 6.2 127 8.5 6.0 142
Kirwin 9550 6.7 4.2 160 9.6 5.3 181
Little Warm 9370 3.9 4.2 93 8.6 5.9 146
Owl Creek 8975 2.6 2.4 108 4.0 2.8 143
South Pass 9040 9.0 6.2 145 9.3 7.9 118
St. Lawrence Alt 8620 1.9 2.9 66 5.6 4.2 133
Togwotee Pass 9580 13.3 10.4 128 17.0 10.8 157
Townsend Creek 8700 3.9 3.8 103 6.6 5.6 118
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Basin Index (%) 126 144
BIGHORN BASIN
Bald Mtn. 9380 10.3 7.8 132 9.1 7.6 120
Bear Trap Meadow 8200 2.0 2.5 80 3.6 4.1 88
Bone Springs Div 9350 7.4 7.0 106 8.1 6.9 117
Grave Springs 8550 2.8 3.1 90 4.0 4.9 82
Kirwin 9550 6.7 4.2 160 9.6 5.3 181
Marquette 8760 3.5 -M * 6.6 -M *
Middle Powder 7760 3.4 4.7 72 3.8 5.9 64
Owl Creek 8975 2.6 2.4 108 4.0 2.8 143
Powder River Pass 9480 2.3 4.5 51 5.1 5.7 89
Shell Creek 9580 8.2 7.0 117 6.6 6.3 105
Timber Creek 7950 2.8 2.1 133 4.2 3.8 111
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Basin Index (%) 107 109
SHOSHONE RIVER
Blackwater 9780 15.1 10.1 150 17.9 9.5 188
Evening Star 9200 13.9 10.6 131 19.7 12.5 158
Marquette 8760 3.5 -M * 6.6 -M *
Sylvan Road 7120 6.6 5.0 132 16.5 8.6 192
Younts Peak 8350 7.6 6.7 113 12.5 7.2 174
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Basin Index (%) 133 176
POWDER RIVER
Bear Trap Meadow 8200 2.0 2.5 80 3.6 4.1 88
Cloud Peak Reservoir 9860 5.1 5.9 86 7.2 6.1 118
Grave Springs 8550 2.8 3.1 90 4.0 4.9 82
Hansen Sawmill 8360 3.3 2.8 118 4.9 4.0 122
Middle Powder 7760 3.4 4.7 72 3.8 5.9 64
Powder River Pass 9480 2.3 4.5 51 5.1 5.7 89
Soldier Park 8720 4.3 -M * 5.5 -M *
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Basin Index (%) 80 93
TONGUE RIVER
Big Goose 7990 4.1 3.5 117 5.1 5.2 98
Bone Springs Div 9350 7.4 7.0 106 8.1 6.9 117
Burgess Junction 7880 4.1 4.5 91 5.4 5.7 95
Dome Lake 8880 4.5 5.1 88 6.5 6.5 100
Little Goose 8870 4.5 -M * 6.5 -M *
Sucker Creek 8880 4.9 4.9 100 5.4 6.5 83
Tie Creek 6870 3.0 1.8 167 6.0 5.4 111
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Basin Index (%) 104 101
BELLE FOURCHE
Cole Canyon 5910 2.7 1.9 142 3.8 4.5 84
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Basin Index (%) 142 84
CHEYENNE RIVER BASIN
Blind Park 6890 3.2 3.0 107 4.8 5.8 83
North Rapid Creek 6130 3.5 3.0 117 3.8 4.8 79
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Basin Index (%) 112 81
UPPER N. PLATTE
Arapaho Ridge 10960 10.8 9.0 120 12.5 10.4 120
Blackhall Mtn 9820 12.1 -M * 14.3 -M *
Columbine 9160 10.0 8.3 120 12.4 11.1 112
Divide Peak 8880 6.3 8.0 79 9.0 9.9 91
Joe Wright 10120 7.7 9.1 85 12.7 11.7 109
Laprele Creek 8375 4.4 3.8 116 4.4 5.8 76
Med Bow 10500 15.4 -M * 15.9 -M *
North French Creek 10130 9.6 11.0 87 11.6 11.5 101
Never Summer 10280 9.0 8.3 108 9.0 -M *
Old Battle 10000 11.4 12.1 94 13.3 15.6 85
Rawah 9020 5.3 4.0 132 8.1 7.0 116
Sage Creek Basin 7850 4.9 5.4 91 6.3 6.9 91
Sand Lake 10050 10.9 11.0 99 10.6 10.8 98
South Brush Creek 8440 3.9 4.4 89 5.5 6.9 80
Tower 10500 13.8 18.3 75 17.8 17.6 101
Webber Springs 9250 8.8 9.1 97 12.3 11.8 104
Willow Creek Pass 9540 7.3 5.3 138 8.5 6.3 135
Zirkel 9340 11.5 9.2 125 15.3 12.7 120
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Basin Index (%) 99 103
SWEETWATER
Deer Park 9700 9.5 6.4 148 13.3 8.2 162
Larsen Creek 9000 7.0 4.6 152 11.2 -M *
South Pass 9040 9.0 6.2 145 9.3 7.9 118
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Basin Index (%) 148 140
LOWER N. PLATTE
Casper Mtn. 7900 4.9 5.5 89 5.4 7.2 75
Laprele Creek 8375 4.4 3.8 116 4.4 5.8 76
Reno Hill 8400 -M 5.6 * -M 6.9 *
Windy Peak 7900 3.3 3.0 110 4.4 5.0 88
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Basin Index (%) 102 79
LARAMIE RIVER
Brooklyn Lake 10240 7.9 7.5 105 8.2 8.8 93
Cinnabar Park 9574 7.1 8.3 86 9.8 10.7 92
Crow Creek 8330 2.3 4.1 56 4.1 5.3 77
Deadman Hill 10220 7.7 7.0 110 8.0 7.5 107
Rawah 9020 5.3 4.0 132 8.1 7.0 116
Roach 9700 5.5 6.7 82 7.2 8.6 84
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Basin Index (%) 95 95
S. PLATTE
Black Mountain 8920 4.2 -M * 5.5 -M *
Crow Creek 8330 2.3 4.1 56 4.1 5.3 77
Deadman Hill 10220 7.7 7.0 110 8.0 7.5 107
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Basin Index (%) 90 95
LITTLE SNAKE RIVER
Battle Mountain 7440 3.8 3.6 106 6.7 6.7 100
Divide Peak 8880 6.3 8.0 79 9.0 9.9 91
Elk River 8700 8.0 6.2 129 9.2 8.7 106
Little Snake River 8915 11.4 8.4 136 16.6 13.9 119
Old Battle 10000 11.4 12.1 94 13.3 15.6 85
Sage Creek Basin 7850 4.9 5.4 91 6.3 6.9 91
Sandstone RS 8150 5.0 4.2 119 5.7 8.2 70
Whiskey Park 8950 9.5 9.0 106 12.8 11.4 112
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Basin Index (%) 106 98
UPPER GREEN RIVER
Big Sandy Opening 9080 8.3 5.4 154 11.1 5.9 188
Blind Bull Sum 8650 13.6 8.6 158 15.0 8.8 170
East Rim Divide 7930 6.8 4.1 166 9.4 5.2 181
Elkhart Park G.S. 9400 5.6 5.4 104 11.2 6.1 184
Gros Ventre Summit 8750 6.3 5.7 111 10.5 5.8 181
Gunsight Pass 9820 6.9 5.6 123 11.2 6.0 187
Kendall R.S. 7740 7.6 4.5 169 11.9 6.1 195
Loomis Park 8240 9.4 6.0 157 14.7 7.6 193
New Fork Lake 8340 6.4 4.3 149 7.0 4.9 143
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.1 4.8 127 11.3 6.2 182
Spring Creek Divide 9000 11.9 9.2 129 17.3 10.2 170
Triple Peak 8500 13.8 7.8 177 18.7 10.3 182
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Basin Index (%) 144 180
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.7 -M * 6.4 -M *
Buck Pasture 9700 6.8 -M * 9.8 -M *
EF Blacks Fork GS 9360 7.0 -M * 6.1 -M *
Hams Fork 7840 5.0 4.3 116 8.7 4.9 178
Hewinta 9519 4.7 3.5 134 6.8 6.2 110
Hickerson Park 9145 4.4 2.6 169 4.8 4.8 100
Hole-in-Rock 9150 3.1 2.9 107 4.8 4.5 107
Indian Creek 9425 11.4 9.8 116 15.7 9.2 171
Kelley R.S. 8180 8.0 5.9 136 13.5 7.9 171
Spirit Lk 10235 6.5 -M * 8.8 -M *
Steel Creek Park 10200 6.9 6.0 115 8.6 7.2 119
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Basin Index (%) 124 141
UPPER BEAR RIVER
Bear River RS 8777 4.5 -M * 6.6 -M *
Bug Lake 7950 -M 6.0 * 10.8 8.5 127
Burts Miller Ranch 8000 2.3 -M * 3.6 -M *
Chalk Creek #1 8993 10.4 9.5 109 12.7 11.0 115
Hayden Fork 9212 7.8 5.3 147 12.0 9.1 132
Kelley R.S. 8180 8.0 5.9 136 13.5 7.9 171
Lily Lake 9156 5.1 4.9 104 7.6 7.7 99
Monte Cristo 8960 10.3 9.6 107 13.4 11.1 121
Salt River Summit 7760 5.3 4.5 118 11.2 7.0 160
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Basin Index (%) 118 130
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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.