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 FRIDAY: DECEMBER 30 , 2016
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 10.3 7.0 147 18.0 9.8 184
Black Bear 8170 15.7 17.2 91 25.1 17.4 144
Blind Bull Sum 8650 13.6 8.9 153 15.0 9.1 165
Cottonwood Creek 7670 9.6 8.2 117 16.6 10.9 152
East Rim Divide 7930 6.9 4.2 164 9.5 5.4 176
Grand Targhee 9260 23.3 17.3 135 22.1 14.6 151
Granite Creek 6770 9.4 6.2 152 15.7 9.2 171
Grassy Lake 7265 14.9 12.2 122 26.5 16.6 160
Gros Ventre Summit 8750 6.2 6.0 103 10.5 6.0 175
Gunsight Pass 9820 7.0 5.9 119 11.3 6.3 179
Lewis Lake Divide 7850 12.3 12.9 95 24.0 16.5 145
Phillips Bench 8200 11.3 10.6 107 20.7 12.5 166
Salt River Summit 7760 5.4 4.7 115 11.3 7.3 155
Snake River Station 6920 9.7 6.0 162 18.4 10.8 170
Spring Creek Divide 9000 12.2 9.7 126 17.6 10.5 168
Thumb Divide 7980 6.5 6.0 108 12.5 8.5 147
Togwotee Pass 9580 13.6 10.8 126 17.3 11.2 154
Two Ocean Plateau 9240 -M 12.2 * -M 12.4 *
Willow Creek 8380 11.3 10.4 109 22.3 15.2 147
Younts Peak 8350 7.9 6.9 114 12.7 7.6 167
----- -----
Basin Index (%) 121 159
MADISON-GALLATIN
Black Bear 8170 15.7 17.2 91 25.1 17.4 144
Canyon 7870 6.6 5.2 127 12.9 7.7 168
Madison Plateau 7750 9.2 10.1 91 18.9 12.1 156
West Yellowstone 6700 5.5 4.5 122 12.9 6.9 187
Whiskey Creek 6800 6.0 6.4 94 13.8 9.5 145
----- -----
Basin Index (%) 99 156
YELLOWSTONE
Beartooth Lake 9360 11.7 9.7 121 9.6 9.0 107
Burnt Mtn 5880 3.2 1.9 168 7.1 6.7 106
Canyon 7870 6.6 5.2 127 12.9 7.7 168
Cole Creek 7850 4.7 6.3 75 4.7 6.3 75
Evening Star 9200 14.0 11.0 127 20.2 12.9 157
Fisher Creek 9100 13.4 14.3 94 18.8 14.7 128
Northeast Entrance 7350 4.5 3.8 118 9.8 6.0 163
Parker Peak 9400 12.2 9.6 127 15.2 8.3 183
Sylvan Lake 8420 9.4 9.0 104 19.7 10.9 181
Thumb Divide 7980 6.5 6.0 108 12.5 8.5 147
Two Ocean Plateau 9240 -M 12.2 * -M 12.4 *
White Mill 8700 11.1 9.6 116 14.6 11.1 132
Wolverine 7650 6.9 4.6 150 10.6 6.1 174
----- -----
Basin Index (%) 115 144
WIND RIVER
Burroughs Creek 8750 8.1 -M * 10.9 -M *
Castle Creek 8400 4.7 -M * 6.9 -M *
Cold Springs 9630 4.2 3.1 135 6.7 4.9 137
Deer Park 9700 9.7 6.6 147 13.7 8.6 159
Hobbs Park 10100 8.1 6.4 127 8.8 6.1 144
Kirwin 9550 6.8 4.3 158 9.9 5.5 180
Little Warm 9370 4.1 4.4 93 9.0 6.1 148
Owl Creek 8975 2.7 2.5 108 4.1 2.8 146
South Pass 9040 9.2 6.5 142 9.6 8.1 119
St. Lawrence Alt 8620 2.0 3.0 67 5.6 4.2 133
Togwotee Pass 9580 13.6 10.8 126 17.3 11.2 154
Townsend Creek 8700 4.0 4.0 100 6.8 5.7 119
----- -----
Basin Index (%) 125 145
BIGHORN BASIN
Bald Mtn. 9380 10.4 8.2 127 9.3 7.8 119
Bear Trap Meadow 8200 2.0 2.5 80 3.7 4.2 88
Bone Springs Div 9350 7.5 7.2 104 8.0 7.0 114
Grave Springs 8550 2.9 3.2 91 4.2 5.0 84
Kirwin 9550 6.8 4.3 158 9.9 5.5 180
Marquette 8760 3.6 -M * 7.1 -M *
Middle Powder 7760 3.5 4.8 73 3.9 6.0 65
Owl Creek 8975 2.7 2.5 108 4.1 2.8 146
Powder River Pass 9480 2.3 4.6 50 5.2 5.8 90
Shell Creek 9580 8.3 7.1 117 6.8 6.4 106
Timber Creek 7950 2.9 2.1 138 4.1 3.9 105
----- -----
Basin Index (%) 106 109
SHOSHONE RIVER
Blackwater 9780 15.1 10.4 145 18.0 9.7 186
Evening Star 9200 14.0 11.0 127 20.2 12.9 157
Marquette 8760 3.6 -M * 7.1 -M *
Sylvan Road 7120 6.6 5.2 127 16.5 8.8 188
Younts Peak 8350 7.9 6.9 114 12.7 7.6 167
----- -----
Basin Index (%) 130 173
POWDER RIVER
Bear Trap Meadow 8200 2.0 2.5 80 3.7 4.2 88
Cloud Peak Reservoir 9860 5.2 6.1 85 7.4 6.2 119
Grave Springs 8550 2.9 3.2 91 4.2 5.0 84
Hansen Sawmill 8360 3.3 2.9 114 5.0 4.0 125
Middle Powder 7760 3.5 4.8 73 3.9 6.0 65
Powder River Pass 9480 2.3 4.6 50 5.2 5.8 90
Soldier Park 8720 4.5 -M * 5.6 -M *
----- -----
Basin Index (%) 80 94
TONGUE RIVER
Big Goose 7990 4.0 3.6 111 5.0 5.2 96
Bone Springs Div 9350 7.5 7.2 104 8.0 7.0 114
Burgess Junction 7880 4.2 4.6 91 5.5 5.8 95
Dome Lake 8880 4.7 5.3 89 6.6 6.6 100
Little Goose 8870 4.6 -M * 6.7 -M *
Sucker Creek 8880 5.0 5.0 100 5.7 6.6 86
Tie Creek 6870 3.1 1.9 163 6.1 5.5 111
----- -----
Basin Index (%) 103 101
BELLE FOURCHE
Cole Canyon 5910 2.7 2.1 129 3.8 4.6 83
----- -----
Basin Index (%) 129 83
CHEYENNE RIVER BASIN
Blind Park 6890 3.1 3.2 97 4.4 6.0 73
North Rapid Creek 6130 3.5 3.1 113 3.8 5.0 76
----- -----
Basin Index (%) 105 75
UPPER N. PLATTE
Arapaho Ridge 10960 11.3 9.2 123 12.9 10.6 122
Blackhall Mtn 9820 12.7 -M * 14.8 -M *
Columbine 9160 10.6 8.6 123 12.7 11.3 112
Divide Peak 8880 6.4 8.3 77 9.1 10.1 90
Joe Wright 10120 7.6 9.3 82 13.0 11.8 110
Laprele Creek 8375 4.4 3.9 113 4.5 5.9 76
Med Bow 10500 16.4 -M * 16.6 -M *
North French Creek 10130 9.9 11.3 88 11.8 11.8 100
Never Summer 10280 -M 8.5 * -M -M *
Old Battle 10000 11.8 12.3 96 13.7 16.0 86
Rawah 9020 5.5 4.2 131 8.1 7.2 112
Sage Creek Basin 7850 4.9 5.6 88 6.3 7.2 88
Sand Lake 10050 11.3 11.4 99 11.2 11.0 102
South Brush Creek 8440 3.9 4.6 85 5.4 7.0 77
Tower 10500 14.7 18.5 79 18.5 18.0 103
Webber Springs 9250 9.1 9.3 98 12.7 12.2 104
Willow Creek Pass 9540 7.4 5.4 137 8.5 6.4 133
Zirkel 9340 12.5 9.6 130 16.3 13.2 123
----- -----
Basin Index (%) 100 103
SWEETWATER
Deer Park 9700 9.7 6.6 147 13.7 8.6 159
Larsen Creek 9000 7.3 4.7 155 11.3 -M *
South Pass 9040 9.2 6.5 142 9.6 8.1 119
----- -----
Basin Index (%) 147 140
LOWER N. PLATTE
Casper Mtn. 7900 5.0 5.7 88 5.5 7.3 75
Laprele Creek 8375 4.4 3.9 113 4.5 5.9 76
Reno Hill 8400 -M 5.7 * -M 7.0 *
Windy Peak 7900 3.3 3.0 110 4.4 5.1 86
----- -----
Basin Index (%) 101 79
LARAMIE RIVER
Brooklyn Lake 10240 8.7 7.7 113 8.9 9.1 98
Cinnabar Park 9574 7.7 8.7 89 10.4 11.2 93
Crow Creek 8330 2.3 4.3 53 4.1 5.4 76
Deadman Hill 10220 8.0 7.1 113 8.2 7.6 108
Rawah 9020 5.5 4.2 131 8.1 7.2 112
Roach 9700 5.8 6.8 85 7.5 8.8 85
----- -----
Basin Index (%) 98 96
S. PLATTE
Black Mountain 8920 4.4 -M * 5.6 -M *
Crow Creek 8330 2.3 4.3 53 4.1 5.4 76
Deadman Hill 10220 8.0 7.1 113 8.2 7.6 108
----- -----
Basin Index (%) 90 95
LITTLE SNAKE RIVER
Battle Mountain 7440 4.1 3.9 105 -M 6.8 *
Divide Peak 8880 6.4 8.3 77 9.1 10.1 90
Elk River 8700 8.4 6.5 129 9.5 8.9 107
Little Snake River 8915 11.6 8.7 133 16.8 14.5 116
Old Battle 10000 11.8 12.3 96 13.7 16.0 86
Sage Creek Basin 7850 4.9 5.6 88 6.3 7.2 88
Sandstone RS 8150 5.1 4.2 121 5.6 8.3 67
Whiskey Park 8950 10.0 9.3 108 13.3 11.7 114
----- -----
Basin Index (%) 106 97
UPPER GREEN RIVER
Big Sandy Opening 9080 8.5 5.7 149 11.2 6.2 181
Blind Bull Sum 8650 13.6 8.9 153 15.0 9.1 165
East Rim Divide 7930 6.9 4.2 164 9.5 5.4 176
Elkhart Park G.S. 9400 5.8 5.6 104 11.3 6.3 179
Gros Ventre Summit 8750 6.2 6.0 103 10.5 6.0 175
Gunsight Pass 9820 7.0 5.9 119 11.3 6.3 179
Kendall R.S. 7740 7.5 4.7 160 11.8 6.4 184
Loomis Park 8240 9.4 6.4 147 14.7 8.0 184
New Fork Lake 8340 6.3 4.4 143 7.1 5.0 142
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.3 5.0 126 11.6 6.4 181
Spring Creek Divide 9000 12.2 9.7 126 17.6 10.5 168
Triple Peak 8500 14.1 8.0 176 19.0 10.7 178
----- -----
Basin Index (%) 139 175
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.6 -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 5.0 4.4 114 8.7 5.0 174
Hewinta 9519 4.8 3.6 133 7.0 6.3 111
Hickerson Park 9145 4.3 2.8 154 4.6 4.9 94
Hole-in-Rock 9150 3.0 2.9 103 5.0 4.6 109
Indian Creek 9425 11.6 9.9 117 16.1 9.6 168
Kelley R.S. 8180 8.0 6.1 131 13.6 8.2 166
Spirit Lk 10235 6.5 -M * 8.6 -M *
Steel Creek Park 10200 6.9 6.1 113 8.8 7.4 119
----- -----
Basin Index (%) 122 139
UPPER BEAR RIVER
Bear River RS 8777 4.6 -M * 6.7 -M *
Bug Lake 7950 -M 6.2 * 10.9 8.8 124
Burts Miller Ranch 8000 2.3 -M * 3.5 -M *
Chalk Creek #1 8993 10.4 9.6 108 12.9 11.3 114
Hayden Fork 9212 7.9 5.7 139 12.2 9.3 131
Kelley R.S. 8180 8.0 6.1 131 13.6 8.2 166
Lily Lake 9156 5.2 5.0 104 7.8 7.8 100
Monte Cristo 8960 10.4 9.8 106 14.0 11.4 123
Salt River Summit 7760 5.4 4.7 115 11.3 7.3 155
----- -----
Basin Index (%) 116 129
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.