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 MONDAY: DECEMBER 26 , 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 9.7 6.6 147 17.4 9.1 191
Black Bear 8170 14.8 15.8 94 24.2 16.2 149
Blind Bull Sum 8650 12.9 8.3 155 14.7 8.5 173
Cottonwood Creek 7670 9.3 7.7 121 16.2 10.2 159
East Rim Divide 7930 6.6 3.9 169 9.1 5.0 182
Grand Targhee 9260 22.0 16.3 135 21.5 14.1 152
Granite Creek 6770 9.0 5.5 164 15.4 8.5 181
Grassy Lake 7265 13.9 11.1 125 25.8 15.4 168
Gros Ventre Summit 8750 6.0 5.5 109 10.3 5.6 184
Gunsight Pass 9820 6.7 5.2 129 11.0 5.8 190
Lewis Lake Divide 7850 11.6 11.8 98 23.2 15.3 152
Phillips Bench 8200 10.6 9.7 109 19.7 11.6 170
Salt River Summit 7760 5.1 4.3 119 10.9 6.8 160
Snake River Station 6920 9.2 5.6 164 17.9 10.0 179
Spring Creek Divide 9000 11.5 8.7 132 16.8 9.9 170
Thumb Divide 7980 6.1 5.6 109 12.2 7.9 154
Togwotee Pass 9580 12.9 10.2 126 16.5 10.6 156
Two Ocean Plateau 9240 -M 11.5 * -M 11.6 *
Willow Creek 8380 10.7 9.8 109 21.6 14.3 151
Younts Peak 8350 7.2 6.4 112 12.1 7.0 173
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Basin Index (%) 124 165
MADISON-GALLATIN
Black Bear 8170 14.8 15.8 94 24.2 16.2 149
Canyon 7870 6.3 4.8 131 12.3 7.2 171
Madison Plateau 7750 8.4 9.5 88 18.3 11.1 165
West Yellowstone 6700 5.1 4.1 124 12.4 6.4 194
Whiskey Creek 6800 5.4 5.8 93 13.2 8.9 148
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Basin Index (%) 100 161
YELLOWSTONE
Beartooth Lake 9360 11.2 9.1 123 5.8 8.4 69
Burnt Mtn 5880 3.2 1.9 168 7.0 6.4 109
Canyon 7870 6.3 4.8 131 12.3 7.2 171
Cole Creek 7850 4.6 6.0 77 4.4 6.2 71
Evening Star 9200 13.4 10.2 131 19.4 12.2 159
Fisher Creek 9100 12.9 13.7 94 18.1 13.8 131
Northeast Entrance 7350 4.3 3.3 130 9.6 5.7 168
Parker Peak 9400 11.7 9.0 130 14.8 7.9 187
Sylvan Lake 8420 9.1 8.5 107 19.3 10.4 186
Thumb Divide 7980 6.1 5.6 109 12.2 7.9 154
Two Ocean Plateau 9240 -M 11.5 * -M 11.6 *
White Mill 8700 10.7 9.0 119 14.1 10.4 136
Wolverine 7650 6.3 4.3 147 10.0 5.8 172
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Basin Index (%) 117 144
WIND RIVER
Burroughs Creek 8750 7.7 -M * 10.1 -M *
Castle Creek 8400 4.5 -M * 6.5 -M *
Cold Springs 9630 3.9 3.0 130 6.1 4.7 130
Deer Park 9700 9.1 6.0 152 13.0 8.0 162
Hobbs Park 10100 7.5 6.1 123 8.2 5.8 141
Kirwin 9550 6.6 4.2 157 9.4 5.2 181
Little Warm 9370 3.7 4.1 90 8.4 5.8 145
Owl Creek 8975 2.6 2.4 108 4.0 2.7 148
South Pass 9040 8.6 6.0 143 8.9 7.7 116
St. Lawrence Alt 8620 1.7 2.8 61 5.4 4.1 132
Togwotee Pass 9580 12.9 10.2 126 16.5 10.6 156
Townsend Creek 8700 3.6 3.7 97 6.2 5.6 111
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Basin Index (%) 124 143
BIGHORN BASIN
Bald Mtn. 9380 10.2 7.6 134 8.8 7.4 119
Bear Trap Meadow 8200 1.8 2.5 72 3.4 4.1 83
Bone Springs Div 9350 7.3 6.9 106 7.8 6.8 115
Grave Springs 8550 2.7 3.0 90 3.9 4.7 83
Kirwin 9550 6.6 4.2 157 9.4 5.2 181
Marquette 8760 3.6 -M * 6.6 -M *
Middle Powder 7760 3.3 4.7 70 3.4 5.8 59
Owl Creek 8975 2.6 2.4 108 4.0 2.7 148
Powder River Pass 9480 2.2 4.3 51 4.7 5.6 84
Shell Creek 9580 8.1 6.9 117 6.3 6.2 102
Timber Creek 7950 2.7 2.0 135 4.1 3.8 108
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Basin Index (%) 107 107
SHOSHONE RIVER
Blackwater 9780 14.7 9.8 150 17.9 9.3 192
Evening Star 9200 13.4 10.2 131 19.4 12.2 159
Marquette 8760 3.6 -M * 6.6 -M *
Sylvan Road 7120 6.5 4.9 133 16.2 8.4 193
Younts Peak 8350 7.2 6.4 112 12.1 7.0 173
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Basin Index (%) 134 178
POWDER RIVER
Bear Trap Meadow 8200 1.8 2.5 72 3.4 4.1 83
Cloud Peak Reservoir 9860 5.0 5.7 88 -M 6.0 *
Grave Springs 8550 2.7 3.0 90 3.9 4.7 83
Hansen Sawmill 8360 3.2 2.7 119 4.8 3.9 123
Middle Powder 7760 3.3 4.7 70 3.4 5.8 59
Powder River Pass 9480 2.2 4.3 51 4.7 5.6 84
Soldier Park 8720 4.0 -M * 5.4 -M *
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Basin Index (%) 79 84
TONGUE RIVER
Big Goose 7990 4.0 3.5 114 5.0 5.1 98
Bone Springs Div 9350 7.3 6.9 106 7.8 6.8 115
Burgess Junction 7880 4.0 4.4 91 5.2 5.6 93
Dome Lake 8880 4.4 5.0 88 6.3 6.4 98
Little Goose 8870 4.5 -M * 6.4 -M *
Sucker Creek 8880 4.8 4.8 100 5.2 6.4 81
Tie Creek 6870 3.0 1.7 176 5.9 5.3 111
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Basin Index (%) 105 99
BELLE FOURCHE
Cole Canyon 5910 2.5 1.6 156 3.4 4.5 76
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Basin Index (%) 156 76
CHEYENNE RIVER BASIN
Blind Park 6890 3.1 2.8 111 4.5 5.7 79
North Rapid Creek 6130 3.1 2.9 107 3.3 4.7 70
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Basin Index (%) 109 75
UPPER N. PLATTE
Arapaho Ridge 10960 10.5 8.8 119 12.2 10.1 121
Blackhall Mtn 9820 11.8 -M * 13.9 -M *
Columbine 9160 9.8 8.1 121 12.0 10.8 111
Divide Peak 8880 6.4 7.6 84 8.7 9.7 90
Joe Wright 10120 7.5 9.0 83 12.5 11.5 109
Laprele Creek 8375 4.1 3.6 114 4.2 5.6 75
Med Bow 10500 15.1 -M * 15.5 -M *
North French Creek 10130 9.6 10.7 90 11.5 11.2 103
Never Summer 10280 8.8 8.1 109 8.9 -M *
Old Battle 10000 11.2 11.8 95 12.9 15.1 85
Rawah 9020 5.3 3.9 136 7.9 7.0 113
Sage Creek Basin 7850 4.7 5.1 92 6.1 6.7 91
Sand Lake 10050 10.7 10.6 101 10.1 10.6 95
South Brush Creek 8440 3.9 4.4 89 5.4 6.8 79
Tower 10500 13.8 18.2 76 17.0 17.1 99
Webber Springs 9250 8.6 8.9 97 -M 11.5 *
Willow Creek Pass 9540 7.2 5.1 141 8.4 6.1 138
Zirkel 9340 11.3 8.8 128 14.9 12.5 119
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Basin Index (%) 101 102
SWEETWATER
Deer Park 9700 9.1 6.0 152 13.0 8.0 162
Larsen Creek 9000 6.7 4.4 152 10.8 -M *
South Pass 9040 8.6 6.0 143 8.9 7.7 116
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Basin Index (%) 149 139
LOWER N. PLATTE
Casper Mtn. 7900 4.6 5.4 85 5.0 7.1 70
Laprele Creek 8375 4.1 3.6 114 4.2 5.6 75
Reno Hill 8400 -M 5.4 * -M 6.7 *
Windy Peak 7900 3.5 3.0 117 4.2 4.9 86
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Basin Index (%) 102 76
LARAMIE RIVER
Brooklyn Lake 10240 7.6 7.4 103 7.8 8.6 91
Cinnabar Park 9574 7.0 7.9 89 9.7 10.5 92
Crow Creek 8330 2.4 4.0 60 4.0 5.2 77
Deadman Hill 10220 7.5 6.8 110 7.9 7.3 108
Rawah 9020 5.3 3.9 136 7.9 7.0 113
Roach 9700 5.4 6.5 83 7.0 8.4 83
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Basin Index (%) 96 94
S. PLATTE
Black Mountain 8920 4.0 -M * 5.2 -M *
Crow Creek 8330 2.4 4.0 60 4.0 5.2 77
Deadman Hill 10220 7.5 6.8 110 7.9 7.3 108
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Basin Index (%) 92 95
LITTLE SNAKE RIVER
Battle Mountain 7440 4.0 3.5 114 5.8 6.6 88
Divide Peak 8880 6.4 7.6 84 8.7 9.7 90
Elk River 8700 8.0 6.0 133 9.0 8.5 106
Little Snake River 8915 11.3 7.9 143 16.4 13.7 120
Old Battle 10000 11.2 11.8 95 12.9 15.1 85
Sage Creek Basin 7850 4.7 5.1 92 6.1 6.7 91
Sandstone RS 8150 5.0 4.1 122 5.5 8.0 69
Whiskey Park 8950 9.4 8.7 108 12.6 11.2 112
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Basin Index (%) 110 97
UPPER GREEN RIVER
Big Sandy Opening 9080 8.0 5.2 154 10.8 5.8 186
Blind Bull Sum 8650 12.9 8.3 155 14.7 8.5 173
East Rim Divide 7930 6.6 3.9 169 9.1 5.0 182
Elkhart Park G.S. 9400 5.4 5.1 106 11.0 5.9 186
Gros Ventre Summit 8750 6.0 5.5 109 10.3 5.6 184
Gunsight Pass 9820 6.7 5.2 129 11.0 5.8 190
Kendall R.S. 7740 7.2 4.3 167 11.5 5.9 195
Loomis Park 8240 9.0 5.7 158 14.3 7.4 193
New Fork Lake 8340 6.1 4.1 149 6.7 4.7 143
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 5.6 4.7 119 10.8 6.0 180
Spring Creek Divide 9000 11.5 8.7 132 16.8 9.9 170
Triple Peak 8500 13.4 7.6 176 18.3 10.0 183
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Basin Index (%) 144 180
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.4 -M * 6.3 -M *
Buck Pasture 9700 6.6 -M * 9.7 -M *
EF Blacks Fork GS 9360 6.2 -M * 6.1 -M *
Hams Fork 7840 4.7 4.1 115 8.4 4.8 175
Hewinta 9519 4.4 3.4 129 6.6 6.1 108
Hickerson Park 9145 4.2 2.5 168 4.5 4.7 96
Hole-in-Rock 9150 2.9 2.8 104 4.9 4.4 111
Indian Creek 9425 10.9 9.6 114 15.2 9.0 169
Kelley R.S. 8180 7.7 5.7 135 13.2 7.7 171
Spirit Lk 10235 6.5 -M * 8.7 -M *
Steel Creek Park 10200 6.6 5.9 112 8.5 7.1 120
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Basin Index (%) 122 140
UPPER BEAR RIVER
Bear River RS 8777 4.5 -M * 6.4 -M *
Bug Lake 7950 8.5 5.8 147 10.8 8.3 130
Burts Miller Ranch 8000 2.5 -M * 3.4 -M *
Chalk Creek #1 8993 10.3 9.4 110 12.7 10.8 118
Hayden Fork 9212 7.8 5.0 156 11.9 8.9 134
Kelley R.S. 8180 7.7 5.7 135 13.2 7.7 171
Lily Lake 9156 5.0 4.8 104 7.5 7.6 99
Monte Cristo 8960 10.2 9.3 110 13.1 10.8 121
Salt River Summit 7760 5.1 4.3 119 10.9 6.8 160
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Basin Index (%) 123 132
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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.