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: DECEMBER 31 , 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 10.4 7.1 146 18.1 9.9 183
Black Bear 8170 15.8 17.5 90 25.2 17.7 142
Blind Bull Sum 8650 13.7 9.0 152 15.1 9.2 164
Cottonwood Creek 7670 9.7 8.3 117 16.7 11.0 152
East Rim Divide 7930 7.1 4.3 165 9.6 5.4 178
Grand Targhee 9260 23.5 17.5 134 22.3 14.7 152
Granite Creek 6770 9.6 6.4 150 15.9 9.3 171
Grassy Lake 7265 15.4 12.5 123 27.2 16.8 162
Gros Ventre Summit 8750 6.4 6.1 105 10.7 6.1 175
Gunsight Pass 9820 7.1 6.0 118 11.4 6.4 178
Lewis Lake Divide 7850 12.5 13.1 95 24.2 16.6 146
Phillips Bench 8200 11.5 10.8 106 20.9 12.7 165
Salt River Summit 7760 5.4 4.8 112 11.4 7.4 154
Snake River Station 6920 9.9 6.2 160 18.7 10.9 172
Spring Creek Divide 9000 12.2 10.0 122 17.7 10.7 165
Thumb Divide 7980 6.6 6.1 108 12.5 8.7 144
Togwotee Pass 9580 13.9 11.0 126 17.6 11.4 154
Two Ocean Plateau 9240 17.9 12.4 144 19.2 12.5 154
Willow Creek 8380 11.3 10.6 107 22.3 15.4 145
Younts Peak 8350 8.1 7.0 116 12.8 7.6 168
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Basin Index (%) 122 159
MADISON-GALLATIN
Black Bear 8170 15.8 17.5 90 25.2 17.7 142
Canyon 7870 6.7 5.3 126 12.9 7.8 165
Madison Plateau 7750 9.2 10.2 90 18.9 12.2 155
West Yellowstone 6700 5.5 4.6 120 12.9 7.0 184
Whiskey Creek 6800 6.0 6.5 92 13.9 9.6 145
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Basin Index (%) 98 154
YELLOWSTONE
Beartooth Lake 9360 11.9 9.9 120 -M 9.1 *
Burnt Mtn 5880 3.7 1.8 206 7.5 6.7 112
Canyon 7870 6.7 5.3 126 12.9 7.8 165
Cole Creek 7850 5.2 6.3 83 4.6 6.3 73
Evening Star 9200 14.2 11.2 127 20.2 13.1 154
Fisher Creek 9100 13.5 14.5 93 18.9 14.8 128
Northeast Entrance 7350 4.5 4.0 112 9.9 6.1 162
Parker Peak 9400 12.3 9.7 127 15.4 8.4 183
Sylvan Lake 8420 9.5 9.1 104 19.9 11.1 179
Thumb Divide 7980 6.6 6.1 108 12.5 8.7 144
Two Ocean Plateau 9240 17.9 12.4 144 19.2 12.5 154
White Mill 8700 11.3 9.8 115 14.7 11.2 131
Wolverine 7650 7.3 4.7 155 10.6 6.2 171
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Basin Index (%) 119 147
WIND RIVER
Burroughs Creek 8750 8.2 -M * 10.9 -M *
Castle Creek 8400 4.8 -M * 7.0 -M *
Cold Springs 9630 4.2 3.1 135 6.7 4.9 137
Deer Park 9700 9.7 6.6 147 13.7 8.7 157
Hobbs Park 10100 8.1 6.5 125 8.8 6.1 144
Kirwin 9550 6.8 4.3 158 9.9 5.6 177
Little Warm 9370 4.2 4.4 95 9.0 6.1 148
Owl Creek 8975 2.6 2.5 104 4.1 2.9 141
South Pass 9040 9.2 6.6 139 9.6 8.2 117
St. Lawrence Alt 8620 1.8 3.0 60 5.6 4.3 130
Togwotee Pass 9580 13.9 11.0 126 17.6 11.4 154
Townsend Creek 8700 4.0 4.1 98 6.9 5.8 119
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Basin Index (%) 124 144
BIGHORN BASIN
Bald Mtn. 9380 10.4 8.3 125 9.1 7.8 117
Bear Trap Meadow 8200 2.3 2.5 92 3.7 4.2 88
Bone Springs Div 9350 7.6 7.2 106 8.3 7.1 117
Grave Springs 8550 2.9 3.3 88 4.2 5.1 82
Kirwin 9550 6.8 4.3 158 9.9 5.6 177
Marquette 8760 3.5 -M * 6.7 -M *
Middle Powder 7760 3.7 4.9 76 3.9 6.0 65
Owl Creek 8975 2.6 2.5 104 4.1 2.9 141
Powder River Pass 9480 2.6 4.7 55 5.3 5.9 90
Shell Creek 9580 8.5 7.2 118 7.0 6.5 108
Timber Creek 7950 2.9 2.1 138 4.3 3.9 110
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Basin Index (%) 107 109
SHOSHONE RIVER
Blackwater 9780 15.2 10.4 146 18.9 9.8 193
Evening Star 9200 14.2 11.2 127 20.2 13.1 154
Marquette 8760 3.5 -M * 6.7 -M *
Sylvan Road 7120 6.8 5.3 128 16.6 8.9 187
Younts Peak 8350 8.1 7.0 116 12.8 7.6 168
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Basin Index (%) 131 174
POWDER RIVER
Bear Trap Meadow 8200 2.3 2.5 92 3.7 4.2 88
Cloud Peak Reservoir 9860 5.5 6.2 89 7.5 6.2 121
Grave Springs 8550 2.9 3.3 88 4.2 5.1 82
Hansen Sawmill 8360 3.4 3.0 113 5.2 4.0 130
Middle Powder 7760 3.7 4.9 76 3.9 6.0 65
Powder River Pass 9480 2.6 4.7 55 5.3 5.9 90
Soldier Park 8720 6.1 -M * 5.8 -M *
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Basin Index (%) 83 95
TONGUE RIVER
Big Goose 7990 4.4 3.6 122 5.3 5.3 100
Bone Springs Div 9350 7.6 7.2 106 8.3 7.1 117
Burgess Junction 7880 4.2 4.7 89 5.5 5.8 95
Dome Lake 8880 5.1 5.4 94 6.6 6.7 99
Little Goose 8870 4.7 -M * 6.8 -M *
Sucker Creek 8880 5.1 5.1 100 5.7 6.7 85
Tie Creek 6870 3.1 2.0 155 6.0 5.5 109
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Basin Index (%) 105 101
BELLE FOURCHE
Cole Canyon 5910 2.7 2.2 123 3.8 4.6 83
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Basin Index (%) 123 83
CHEYENNE RIVER BASIN
Blind Park 6890 3.2 3.2 100 4.8 6.0 80
North Rapid Creek 6130 3.5 3.2 109 3.7 5.0 74
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Basin Index (%) 105 77
UPPER N. PLATTE
Arapaho Ridge 10960 11.4 9.3 123 12.9 10.8 119
Blackhall Mtn 9820 12.7 -M * 14.9 -M *
Columbine 9160 10.7 8.7 123 13.0 11.4 114
Divide Peak 8880 6.4 8.4 76 9.2 10.3 89
Joe Wright 10120 7.6 9.4 81 13.1 12.0 109
Laprele Creek 8375 4.4 3.9 113 4.6 5.9 78
Med Bow 10500 16.4 -M * 16.7 -M *
North French Creek 10130 10.0 11.5 87 11.9 12.0 99
Never Summer 10280 -M 8.6 * -M -M *
Old Battle 10000 11.8 12.4 95 13.8 16.2 85
Rawah 9020 5.4 4.3 126 8.1 7.3 111
Sage Creek Basin 7850 5.0 5.7 88 6.3 7.4 85
Sand Lake 10050 11.3 11.6 97 11.2 11.1 101
South Brush Creek 8440 4.0 4.7 85 5.6 7.1 79
Tower 10500 14.7 18.5 79 18.5 18.2 102
Webber Springs 9250 9.1 9.4 97 12.6 12.4 102
Willow Creek Pass 9540 7.4 5.4 137 8.7 6.5 134
Zirkel 9340 12.5 9.8 128 16.2 13.5 120
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Basin Index (%) 99 102
SWEETWATER
Deer Park 9700 9.7 6.6 147 13.7 8.7 157
Larsen Creek 9000 7.2 4.8 150 11.3 -M *
South Pass 9040 9.2 6.6 139 9.6 8.2 117
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Basin Index (%) 145 138
LOWER N. PLATTE
Casper Mtn. 7900 5.1 5.8 88 5.5 7.4 74
Laprele Creek 8375 4.4 3.9 113 4.6 5.9 78
Reno Hill 8400 -M 5.7 * -M 7.0 *
Windy Peak 7900 3.4 3.1 110 4.4 5.1 86
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Basin Index (%) 101 79
LARAMIE RIVER
Brooklyn Lake 10240 8.7 7.8 112 8.9 9.2 97
Cinnabar Park 9574 7.7 8.9 87 10.4 11.4 91
Crow Creek 8330 2.2 4.4 50 4.1 5.4 76
Deadman Hill 10220 8.2 7.2 114 8.3 7.7 108
Rawah 9020 5.4 4.3 126 8.1 7.3 111
Roach 9700 5.8 6.9 84 7.5 8.9 84
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Basin Index (%) 96 95
S. PLATTE
Black Mountain 8920 4.4 -M * 5.6 -M *
Crow Creek 8330 2.2 4.4 50 4.1 5.4 76
Deadman Hill 10220 8.2 7.2 114 8.3 7.7 108
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Basin Index (%) 90 95
LITTLE SNAKE RIVER
Battle Mountain 7440 4.1 4.0 102 -M 6.9 *
Divide Peak 8880 6.4 8.4 76 9.2 10.3 89
Elk River 8700 8.4 6.6 127 9.6 9.0 107
Little Snake River 8915 11.7 8.9 131 16.9 14.6 116
Old Battle 10000 11.8 12.4 95 13.8 16.2 85
Sage Creek Basin 7850 5.0 5.7 88 6.3 7.4 85
Sandstone RS 8150 5.1 4.3 119 5.7 8.4 68
Whiskey Park 8950 10.1 9.4 107 13.4 12.0 112
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Basin Index (%) 105 96
UPPER GREEN RIVER
Big Sandy Opening 9080 8.6 5.8 148 11.3 6.2 182
Blind Bull Sum 8650 13.7 9.0 152 15.1 9.2 164
East Rim Divide 7930 7.1 4.3 165 9.6 5.4 178
Elkhart Park G.S. 9400 5.9 5.7 104 11.3 6.3 179
Gros Ventre Summit 8750 6.4 6.1 105 10.7 6.1 175
Gunsight Pass 9820 7.1 6.0 118 11.4 6.4 178
Kendall R.S. 7740 7.7 4.8 160 12.0 6.5 185
Loomis Park 8240 9.6 6.5 148 14.9 8.0 186
New Fork Lake 8340 6.4 4.5 142 7.3 5.1 143
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.4 5.1 125 11.7 6.5 180
Spring Creek Divide 9000 12.2 10.0 122 17.7 10.7 165
Triple Peak 8500 14.1 8.2 172 19.0 10.9 174
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Basin Index (%) 138 174
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.8 -M * 6.6 -M *
Buck Pasture 9700 6.9 -M * 10.0 -M *
EF Blacks Fork GS 9360 6.9 -M * 6.1 -M *
Hams Fork 7840 5.2 4.5 116 8.8 5.1 173
Hewinta 9519 4.8 3.7 130 7.0 6.4 109
Hickerson Park 9145 4.3 2.8 154 4.7 4.9 96
Hole-in-Rock 9150 3.1 2.9 107 5.0 4.6 109
Indian Creek 9425 11.6 10.0 116 16.1 9.8 164
Kelley R.S. 8180 8.2 6.1 134 13.7 8.3 165
Spirit Lk 10235 6.5 -M * 8.6 -M *
Steel Creek Park 10200 7.0 6.2 113 8.8 7.4 119
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Basin Index (%) 122 138
UPPER BEAR RIVER
Bear River RS 8777 4.6 -M * 6.7 -M *
Bug Lake 7950 -M 6.2 * 11.9 8.9 134
Burts Miller Ranch 8000 2.2 -M * 3.4 -M *
Chalk Creek #1 8993 10.4 9.6 108 12.9 11.4 113
Hayden Fork 9212 7.8 5.8 134 12.2 9.5 128
Kelley R.S. 8180 8.2 6.1 134 13.7 8.3 165
Lily Lake 9156 5.2 5.1 102 7.8 7.9 99
Monte Cristo 8960 10.3 10.0 103 14.0 11.6 121
Salt River Summit 7760 5.4 4.8 112 11.4 7.4 154
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Basin Index (%) 114 129
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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.