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 SUNDAY: DECEMBER 25 , 2016
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 9.6 6.5 148 17.2 9.0 191
Black Bear 8170 14.6 15.5 94 24.2 16.0 151
Blind Bull Sum 8650 13.1 8.2 160 14.7 8.4 175
Cottonwood Creek 7670 9.1 7.6 120 16.2 10.1 160
East Rim Divide 7930 5.7 3.8 150 8.9 4.9 182
Grand Targhee 9260 22.0 15.9 138 21.7 13.7 158
Granite Creek 6770 8.9 5.3 168 15.2 8.3 183
Grassy Lake 7265 13.7 10.9 126 25.7 15.1 170
Gros Ventre Summit 8750 5.9 5.3 111 10.3 5.5 187
Gunsight Pass 9820 6.7 5.0 134 11.0 5.7 193
Lewis Lake Divide 7850 11.6 11.4 102 23.2 15.0 155
Phillips Bench 8200 10.5 9.5 111 19.6 11.4 172
Salt River Summit 7760 5.0 4.2 119 11.0 6.7 164
Snake River Station 6920 9.1 5.5 165 17.8 9.9 180
Spring Creek Divide 9000 11.4 8.5 134 16.9 9.7 174
Thumb Divide 7980 6.0 5.5 109 12.0 7.8 154
Togwotee Pass 9580 12.8 10.1 127 16.5 10.5 157
Two Ocean Plateau 9240 17.1 11.3 151 18.6 11.5 162
Willow Creek 8380 10.6 9.6 110 21.5 14.1 152
Younts Peak 8350 7.2 6.2 116 12.1 6.9 175
----- -----
Basin Index (%) 127 167
MADISON-GALLATIN
Black Bear 8170 14.6 15.5 94 24.2 16.0 151
Canyon 7870 6.1 4.8 127 12.3 7.1 173
Madison Plateau 7750 8.1 9.3 87 18.1 10.9 166
West Yellowstone 6700 4.9 4.0 122 12.2 6.2 197
Whiskey Creek 6800 5.3 5.8 91 13.1 8.8 149
----- -----
Basin Index (%) 99 163
YELLOWSTONE
Beartooth Lake 9360 11.3 9.0 126 5.9 8.2 72
Burnt Mtn 5880 3.0 1.9 158 6.8 6.4 106
Canyon 7870 6.1 4.8 127 12.3 7.1 173
Cole Creek 7850 4.5 5.9 76 4.6 6.2 74
Evening Star 9200 13.5 10.1 134 19.5 12.0 162
Fisher Creek 9100 12.8 13.6 94 18.1 13.6 133
Northeast Entrance 7350 4.2 3.2 131 9.6 5.7 168
Parker Peak 9400 11.8 8.8 134 14.8 7.8 190
Sylvan Lake 8420 9.0 8.4 107 19.2 10.3 186
Thumb Divide 7980 6.0 5.5 109 12.0 7.8 154
Two Ocean Plateau 9240 17.1 11.3 151 18.6 11.5 162
White Mill 8700 10.6 8.9 119 14.3 10.3 139
Wolverine 7650 6.3 4.2 150 10.1 5.7 177
----- -----
Basin Index (%) 122 147
WIND RIVER
Burroughs Creek 8750 7.6 -M * 10.3 -M *
Castle Creek 8400 4.3 -M * 6.3 -M *
Cold Springs 9630 3.8 3.0 127 6.2 4.6 135
Deer Park 9700 8.8 5.7 154 12.7 7.8 163
Hobbs Park 10100 7.6 6.1 125 8.3 5.8 143
Kirwin 9550 6.3 4.2 150 9.3 5.2 179
Little Warm 9370 3.7 4.1 90 8.5 5.7 149
Owl Creek 8975 2.3 2.3 100 3.7 2.7 137
South Pass 9040 8.3 5.8 143 8.7 7.6 114
St. Lawrence Alt 8620 1.7 2.8 61 5.3 4.1 129
Togwotee Pass 9580 12.8 10.1 127 16.5 10.5 157
Townsend Creek 8700 3.6 3.6 100 6.4 5.5 116
----- -----
Basin Index (%) 123 144
BIGHORN BASIN
Bald Mtn. 9380 10.1 7.5 135 8.8 7.3 121
Bear Trap Meadow 8200 1.5 2.4 62 3.5 4.0 88
Bone Springs Div 9350 7.0 6.9 101 7.8 6.6 118
Grave Springs 8550 2.4 3.0 80 3.9 4.7 83
Kirwin 9550 6.3 4.2 150 9.3 5.2 179
Marquette 8760 3.4 -M * 6.4 -M *
Middle Powder 7760 2.9 4.6 63 3.9 5.8 67
Owl Creek 8975 2.3 2.3 100 3.7 2.7 137
Powder River Pass 9480 1.8 4.2 43 4.9 5.5 89
Shell Creek 9580 7.8 6.8 115 6.4 6.1 105
Timber Creek 7950 2.6 2.0 130 4.0 3.8 105
----- -----
Basin Index (%) 102 109
SHOSHONE RIVER
Blackwater 9780 14.8 9.7 153 18.0 9.2 196
Evening Star 9200 13.5 10.1 134 19.5 12.0 162
Marquette 8760 3.4 -M * 6.4 -M *
Sylvan Road 7120 6.5 4.8 135 16.2 8.3 195
Younts Peak 8350 7.2 6.2 116 12.1 6.9 175
----- -----
Basin Index (%) 136 181
POWDER RIVER
Bear Trap Meadow 8200 1.5 2.4 62 3.5 4.0 88
Cloud Peak Reservoir 9860 4.0 5.6 71 6.1 5.9 103
Grave Springs 8550 2.4 3.0 80 3.9 4.7 83
Hansen Sawmill 8360 2.7 2.7 100 4.3 3.8 113
Middle Powder 7760 2.9 4.6 63 3.9 5.8 67
Powder River Pass 9480 1.8 4.2 43 4.9 5.5 89
Soldier Park 8720 3.2 -M * 4.9 -M *
----- -----
Basin Index (%) 68 90
TONGUE RIVER
Big Goose 7990 3.4 3.4 100 4.5 5.1 88
Bone Springs Div 9350 7.0 6.9 101 7.8 6.6 118
Burgess Junction 7880 3.6 4.3 84 5.3 5.6 95
Dome Lake 8880 3.9 4.9 80 6.1 6.4 95
Little Goose 8870 3.8 -M * 5.8 -M *
Sucker Creek 8880 4.4 4.7 94 5.4 6.4 84
Tie Creek 6870 2.7 1.6 169 5.7 5.3 108
----- -----
Basin Index (%) 97 98
BELLE FOURCHE
Cole Canyon 5910 2.2 1.5 147 3.5 4.4 80
----- -----
Basin Index (%) 147 80
CHEYENNE RIVER BASIN
Blind Park 6890 3.1 2.7 115 4.3 5.6 77
North Rapid Creek 6130 2.8 2.8 100 3.1 4.7 66
----- -----
Basin Index (%) 107 72
UPPER N. PLATTE
Arapaho Ridge 10960 10.0 8.7 115 11.8 10.0 118
Blackhall Mtn 9820 11.3 -M * 13.4 -M *
Columbine 9160 9.3 8.0 116 11.9 10.7 111
Divide Peak 8880 6.0 7.5 80 8.4 9.5 88
Joe Wright 10120 7.1 8.9 80 12.0 11.4 105
Laprele Creek 8375 3.9 3.6 108 4.2 5.6 75
Med Bow 10500 14.1 -M * 14.7 -M *
North French Creek 10130 8.9 10.6 84 10.9 11.1 98
Never Summer 10280 8.4 8.0 105 8.6 -M *
Old Battle 10000 10.7 11.7 91 12.5 14.9 84
Rawah 9020 5.1 3.9 131 7.9 6.8 116
Sage Creek Basin 7850 4.3 5.1 84 5.6 6.6 85
Sand Lake 10050 9.8 10.5 93 9.8 10.4 94
South Brush Creek 8440 3.4 4.3 79 5.2 6.7 78
Tower 10500 13.5 18.2 74 16.9 16.9 100
Webber Springs 9250 8.2 8.8 93 11.7 11.4 103
Willow Creek Pass 9540 6.8 5.1 133 8.1 6.1 133
Zirkel 9340 10.8 8.6 126 14.6 12.4 118
----- -----
Basin Index (%) 96 101
SWEETWATER
Deer Park 9700 8.8 5.7 154 12.7 7.8 163
Larsen Creek 9000 6.6 4.4 150 10.7 -M *
South Pass 9040 8.3 5.8 143 8.7 7.6 114
----- -----
Basin Index (%) 149 139
LOWER N. PLATTE
Casper Mtn. 7900 4.1 5.4 76 4.9 7.0 70
Laprele Creek 8375 3.9 3.6 108 4.2 5.6 75
Reno Hill 8400 -M 5.4 * -M 6.6 *
Windy Peak 7900 3.3 2.9 114 4.2 4.8 88
----- -----
Basin Index (%) 95 76
LARAMIE RIVER
Brooklyn Lake 10240 7.2 7.3 99 7.6 8.5 89
Cinnabar Park 9574 6.6 7.8 85 9.3 10.3 90
Crow Creek 8330 2.1 3.9 54 3.8 5.1 75
Deadman Hill 10220 7.2 6.8 106 7.7 7.3 105
Rawah 9020 5.1 3.9 131 7.9 6.8 116
Roach 9700 5.1 6.4 80 6.8 8.3 82
----- -----
Basin Index (%) 92 93
S. PLATTE
Black Mountain 8920 3.6 -M * 5.3 -M *
Crow Creek 8330 2.1 3.9 54 3.8 5.1 75
Deadman Hill 10220 7.2 6.8 106 7.7 7.3 105
----- -----
Basin Index (%) 87 93
LITTLE SNAKE RIVER
Battle Mountain 7440 3.5 3.4 103 6.4 6.5 98
Divide Peak 8880 6.0 7.5 80 8.4 9.5 88
Elk River 8700 7.5 5.9 127 8.6 8.3 104
Little Snake River 8915 10.4 7.7 135 15.4 13.5 114
Old Battle 10000 10.7 11.7 91 12.5 14.9 84
Sage Creek Basin 7850 4.3 5.1 84 5.6 6.6 85
Sandstone RS 8150 4.6 4.1 112 5.4 7.9 68
Whiskey Park 8950 8.8 8.6 102 11.8 11.0 107
----- -----
Basin Index (%) 103 95
UPPER GREEN RIVER
Big Sandy Opening 9080 8.1 5.1 159 10.8 5.7 189
Blind Bull Sum 8650 13.1 8.2 160 14.7 8.4 175
East Rim Divide 7930 5.7 3.8 150 8.9 4.9 182
Elkhart Park G.S. 9400 5.3 4.9 108 10.8 5.8 186
Gros Ventre Summit 8750 5.9 5.3 111 10.3 5.5 187
Gunsight Pass 9820 6.7 5.0 134 11.0 5.7 193
Kendall R.S. 7740 7.2 4.3 167 11.5 5.8 198
Loomis Park 8240 8.8 5.6 157 14.1 7.2 196
New Fork Lake 8340 5.9 4.0 148 6.6 4.6 143
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 5.8 4.6 126 11.0 5.9 186
Spring Creek Divide 9000 11.4 8.5 134 16.9 9.7 174
Triple Peak 8500 13.3 7.6 175 18.2 9.9 184
----- -----
Basin Index (%) 145 183
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.4 -M * 6.0 -M *
Buck Pasture 9700 6.6 -M * 9.3 -M *
EF Blacks Fork GS 9360 6.3 -M * 6.0 -M *
Hams Fork 7840 4.7 4.0 118 8.4 4.7 179
Hewinta 9519 4.4 3.3 133 6.6 6.1 108
Hickerson Park 9145 4.2 2.4 175 4.7 4.7 100
Hole-in-Rock 9150 2.9 2.8 104 4.9 4.4 111
Indian Creek 9425 10.8 9.5 114 15.0 8.8 170
Kelley R.S. 8180 7.5 5.6 134 13.0 7.5 173
Spirit Lk 10235 6.4 -M * 8.8 -M *
Steel Creek Park 10200 6.5 5.8 112 8.2 7.0 117
----- -----
Basin Index (%) 123 141
UPPER BEAR RIVER
Bear River RS 8777 4.3 -M * 6.3 -M *
Bug Lake 7950 8.3 5.8 143 10.8 8.2 132
Burts Miller Ranch 8000 2.4 -M * 3.5 -M *
Chalk Creek #1 8993 10.0 9.4 106 12.3 10.7 115
Hayden Fork 9212 7.4 4.8 154 11.5 8.8 131
Kelley R.S. 8180 7.5 5.6 134 13.0 7.5 173
Lily Lake 9156 4.8 4.7 102 7.2 7.5 96
Monte Cristo 8960 9.7 9.1 107 13.1 10.7 122
Salt River Summit 7760 5.0 4.2 119 11.0 6.7 164
----- -----
Basin Index (%) 121 131
-----------------------------------------------------------------------------
-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.