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 THURSDAY: DECEMBER 22 , 2016
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 9.4 6.0 157 17.0 8.7 195
Black Bear 8170 13.8 14.7 94 23.1 15.6 148
Blind Bull Sum 8650 12.5 7.9 158 14.2 8.1 175
Cottonwood Creek 7670 8.8 7.2 122 15.6 9.7 161
East Rim Divide 7930 5.0 3.6 139 8.3 4.8 173
Grand Targhee 9260 21.5 14.8 145 21.0 13.0 162
Granite Creek 6770 7.9 4.9 161 14.4 8.0 180
Grassy Lake 7265 13.3 10.4 128 24.9 14.4 173
Gros Ventre Summit 8750 5.3 5.0 106 9.4 5.4 174
Gunsight Pass 9820 6.2 4.5 138 10.4 5.5 189
Lewis Lake Divide 7850 11.1 10.7 104 22.7 14.5 157
Phillips Bench 8200 9.2 8.9 103 18.4 10.9 169
Salt River Summit 7760 4.6 3.9 118 10.5 6.5 162
Snake River Station 6920 8.8 5.3 166 17.6 9.5 185
Spring Creek Divide 9000 11.0 8.2 134 16.3 9.4 173
Thumb Divide 7980 5.6 5.2 108 11.6 7.6 153
Togwotee Pass 9580 12.6 9.7 130 16.2 10.1 160
Two Ocean Plateau 9240 16.8 10.9 154 18.2 11.2 162
Willow Creek 8380 10.4 9.2 113 21.2 13.6 156
Younts Peak 8350 6.9 5.9 117 11.5 6.7 172
----- -----
Basin Index (%) 128 167
MADISON-GALLATIN
Black Bear 8170 13.8 14.7 94 23.1 15.6 148
Canyon 7870 6.0 4.5 133 12.0 6.8 176
Madison Plateau 7750 7.5 8.9 84 17.4 10.6 164
West Yellowstone 6700 4.1 3.8 108 11.7 6.0 195
Whiskey Creek 6800 4.5 5.6 80 12.3 8.5 145
----- -----
Basin Index (%) 96 161
YELLOWSTONE
Beartooth Lake 9360 11.1 8.7 128 -M 8.0 *
Burnt Mtn 5880 3.0 1.8 167 6.7 6.2 108
Canyon 7870 6.0 4.5 133 12.0 6.8 176
Cole Creek 7850 4.6 5.7 81 4.6 6.0 77
Evening Star 9200 13.2 9.6 138 19.3 11.6 166
Fisher Creek 9100 12.6 13.1 96 17.9 13.1 137
Northeast Entrance 7350 4.2 2.9 145 9.4 5.5 171
Parker Peak 9400 -M 8.5 * 14.5 7.6 191
Sylvan Lake 8420 9.0 8.0 112 19.0 9.9 192
Thumb Divide 7980 5.6 5.2 108 11.6 7.6 153
Two Ocean Plateau 9240 16.8 10.9 154 18.2 11.2 162
White Mill 8700 10.5 8.7 121 13.8 9.9 139
Wolverine 7650 -M 3.9 * -M 5.6 *
----- -----
Basin Index (%) 122 154
WIND RIVER
Burroughs Creek 8750 7.4 -M * 9.7 -M *
Castle Creek 8400 4.1 -M * 6.1 -M *
Cold Springs 9630 3.6 2.9 124 6.0 4.5 133
Deer Park 9700 7.8 5.2 150 11.6 7.6 153
Hobbs Park 10100 -M 6.0 * 7.8 5.6 139
Kirwin 9550 6.1 4.1 149 8.9 5.0 178
Little Warm 9370 3.4 3.9 87 8.1 5.5 147
Owl Creek 8975 2.1 2.3 91 3.6 2.6 138
South Pass 9040 7.6 5.6 136 8.3 7.4 112
St. Lawrence Alt 8620 1.4 2.6 54 5.2 4.0 130
Togwotee Pass 9580 12.6 9.7 130 16.2 10.1 160
Townsend Creek 8700 3.0 3.4 88 5.7 5.3 108
----- -----
Basin Index (%) 120 141
BIGHORN BASIN
Bald Mtn. 9380 9.2 7.3 126 8.1 7.0 116
Bear Trap Meadow 8200 1.4 2.3 61 3.3 3.9 85
Bone Springs Div 9350 6.3 6.6 95 7.2 6.4 112
Grave Springs 8550 2.2 2.8 79 3.7 4.6 80
Kirwin 9550 6.1 4.1 149 8.9 5.0 178
Marquette 8760 3.3 -M * 6.4 -M *
Middle Powder 7760 2.8 4.3 65 3.6 5.6 64
Owl Creek 8975 2.1 2.3 91 3.6 2.6 138
Powder River Pass 9480 1.6 4.0 40 4.5 5.3 85
Shell Creek 9580 6.8 6.5 105 6.0 5.9 102
Timber Creek 7950 2.5 1.9 132 4.0 3.7 108
----- -----
Basin Index (%) 97 106
SHOSHONE RIVER
Blackwater 9780 14.6 9.3 157 17.8 9.0 198
Evening Star 9200 13.2 9.6 138 19.3 11.6 166
Marquette 8760 3.3 -M * 6.4 -M *
Sylvan Road 7120 6.2 4.5 138 16.0 8.1 198
Younts Peak 8350 6.9 5.9 117 11.5 6.7 172
----- -----
Basin Index (%) 140 182
POWDER RIVER
Bear Trap Meadow 8200 1.4 2.3 61 3.3 3.9 85
Cloud Peak Reservoir 9860 3.5 5.3 66 5.6 5.8 97
Grave Springs 8550 2.2 2.8 79 3.7 4.6 80
Hansen Sawmill 8360 2.4 2.6 92 4.1 3.7 111
Middle Powder 7760 2.8 4.3 65 3.6 5.6 64
Powder River Pass 9480 1.6 4.0 40 4.5 5.3 85
Soldier Park 8720 2.9 -M * 4.6 -M *
----- -----
Basin Index (%) 65 86
TONGUE RIVER
Big Goose 7990 3.2 3.2 100 4.4 4.9 90
Bone Springs Div 9350 6.3 6.6 95 7.2 6.4 112
Burgess Junction 7880 3.4 4.1 83 5.0 5.4 93
Dome Lake 8880 3.6 4.7 77 5.9 6.2 95
Little Goose 8870 3.6 -M * 5.6 -M *
Sucker Creek 8880 4.1 4.4 93 5.0 6.1 82
Tie Creek 6870 2.6 1.4 186 5.5 5.1 108
----- -----
Basin Index (%) 95 97
BELLE FOURCHE
Cole Canyon 5910 2.1 1.1 191 3.4 4.2 81
----- -----
Basin Index (%) 191 81
CHEYENNE RIVER BASIN
Blind Park 6890 2.9 2.4 121 4.2 5.3 79
North Rapid Creek 6130 2.6 2.5 104 3.0 4.5 67
----- -----
Basin Index (%) 112 73
UPPER N. PLATTE
Arapaho Ridge 10960 9.5 8.3 114 11.3 9.7 116
Blackhall Mtn 9820 11.0 -M * 13.2 -M *
Columbine 9160 8.8 7.7 114 11.3 10.2 111
Divide Peak 8880 5.7 7.1 80 8.2 9.2 89
Joe Wright 10120 6.7 8.6 78 11.5 10.9 106
Laprele Creek 8375 3.6 3.3 109 4.0 5.3 75
Med Bow 10500 13.9 -M * 14.5 -M *
North French Creek 10130 8.6 10.3 83 10.7 10.7 100
Never Summer 10280 8.2 7.5 109 8.5 -M *
Old Battle 10000 10.3 11.2 92 11.5 14.4 80
Rawah 9020 4.8 3.8 126 7.5 6.7 112
Sage Creek Basin 7850 4.1 4.7 87 5.5 6.3 87
Sand Lake 10050 9.6 10.0 96 9.6 10.0 96
South Brush Creek 8440 3.2 4.2 76 4.8 6.5 74
Tower 10500 12.9 17.7 73 16.2 16.4 99
Webber Springs 9250 7.9 8.4 94 11.3 11.0 103
Willow Creek Pass 9540 6.6 4.9 135 7.9 5.8 136
Zirkel 9340 10.5 8.1 130 14.3 12.0 119
----- -----
Basin Index (%) 96 100
SWEETWATER
Deer Park 9700 7.8 5.2 150 11.6 7.6 153
Larsen Creek 9000 5.7 4.1 139 9.9 -M *
South Pass 9040 7.6 5.6 136 8.3 7.4 112
----- -----
Basin Index (%) 142 133
LOWER N. PLATTE
Casper Mtn. 7900 3.8 5.2 73 4.6 6.8 68
Laprele Creek 8375 3.6 3.3 109 4.0 5.3 75
Reno Hill 8400 -M 5.2 * -M 6.4 *
Windy Peak 7900 3.2 2.8 114 4.0 4.7 85
----- -----
Basin Index (%) 94 75
LARAMIE RIVER
Brooklyn Lake 10240 7.0 7.1 99 7.5 8.2 91
Cinnabar Park 9574 6.5 7.6 86 9.2 10.0 92
Crow Creek 8330 2.0 3.9 51 3.7 4.9 76
Deadman Hill 10220 7.0 6.4 109 7.5 7.0 107
Rawah 9020 4.8 3.8 126 7.5 6.7 112
Roach 9700 5.0 5.9 85 6.7 7.9 85
----- -----
Basin Index (%) 93 94
S. PLATTE
Black Mountain 8920 3.6 -M * 5.2 -M *
Crow Creek 8330 2.0 3.9 51 3.7 4.9 76
Deadman Hill 10220 7.0 6.4 109 7.5 7.0 107
----- -----
Basin Index (%) 87 94
LITTLE SNAKE RIVER
Battle Mountain 7440 3.3 3.2 103 6.2 6.3 98
Divide Peak 8880 5.7 7.1 80 8.2 9.2 89
Elk River 8700 7.2 5.6 129 8.4 8.0 105
Little Snake River 8915 10.1 7.0 144 15.0 12.9 116
Old Battle 10000 10.3 11.2 92 11.5 14.4 80
Sage Creek Basin 7850 4.1 4.7 87 5.5 6.3 87
Sandstone RS 8150 4.5 3.9 115 5.3 7.6 70
Whiskey Park 8950 8.3 8.2 101 11.5 10.6 108
----- -----
Basin Index (%) 105 95
UPPER GREEN RIVER
Big Sandy Opening 9080 7.2 4.8 150 10.0 5.5 182
Blind Bull Sum 8650 12.5 7.9 158 14.2 8.1 175
East Rim Divide 7930 5.0 3.6 139 8.3 4.8 173
Elkhart Park G.S. 9400 4.7 4.6 102 10.0 5.6 179
Gros Ventre Summit 8750 5.3 5.0 106 9.4 5.4 174
Gunsight Pass 9820 6.2 4.5 138 10.4 5.5 189
Kendall R.S. 7740 6.8 4.1 166 11.1 5.6 198
Loomis Park 8240 7.9 5.2 152 13.2 6.9 191
New Fork Lake 8340 5.2 3.7 141 6.1 4.5 136
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 5.0 4.4 114 10.2 5.7 179
Spring Creek Divide 9000 11.0 8.2 134 16.3 9.4 173
Triple Peak 8500 12.7 7.3 174 17.5 9.6 182
----- -----
Basin Index (%) 141 178
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.1 -M * 5.9 -M *
Buck Pasture 9700 5.8 -M * 8.6 -M *
EF Blacks Fork GS 9360 5.3 -M * 5.8 -M *
Hams Fork 7840 4.2 3.7 114 8.0 4.5 178
Hewinta 9519 3.9 3.2 122 6.3 5.9 107
Hickerson Park 9145 3.4 2.2 155 3.9 4.6 85
Hole-in-Rock 9150 2.3 2.5 92 4.2 4.2 100
Indian Creek 9425 10.2 8.9 115 14.3 8.6 166
Kelley R.S. 8180 7.0 5.1 137 12.6 7.3 173
Spirit Lk 10235 4.3 -M * 6.8 -M *
Steel Creek Park 10200 6.0 5.7 105 7.9 6.8 116
----- -----
Basin Index (%) 118 137
UPPER BEAR RIVER
Bear River RS 8777 4.1 -M * 6.1 -M *
Bug Lake 7950 8.7 5.5 158 10.3 7.9 130
Burts Miller Ranch 8000 2.4 -M * 3.4 -M *
Chalk Creek #1 8993 9.7 9.1 107 12.0 10.3 117
Hayden Fork 9212 6.9 4.6 150 10.9 8.4 130
Kelley R.S. 8180 7.0 5.1 137 12.6 7.3 173
Lily Lake 9156 4.6 4.6 100 6.9 7.3 95
Monte Cristo 8960 9.2 8.8 105 12.9 10.2 126
Salt River Summit 7760 4.6 3.9 118 10.5 6.5 162
----- -----
Basin Index (%) 122 131
-----------------------------------------------------------------------------
-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.