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 16 , 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 8.2 5.5 149 15.3 8.2 187
Black Bear 8170 12.3 13.2 93 21.9 14.3 153
Blind Bull Sum 8650 11.6 7.2 161 12.7 7.6 167
Cottonwood Creek 7670 7.6 6.5 117 14.6 9.0 162
East Rim Divide 7930 4.5 3.1 145 7.9 4.4 180
Grand Targhee 9260 19.8 13.3 149 19.6 12.2 161
Granite Creek 6770 6.8 4.3 158 13.1 7.4 177
Grassy Lake 7265 11.5 9.4 122 23.3 13.3 175
Gros Ventre Summit 8750 4.7 4.6 102 9.1 5.1 178
Gunsight Pass 9820 5.2 4.2 124 9.5 5.2 183
Lewis Lake Divide 7850 -M 9.6 * 21.2 13.4 158
Phillips Bench 8200 7.9 8.1 98 17.0 10.1 168
Salt River Summit 7760 3.7 3.3 112 9.6 5.9 163
Snake River Station 6920 7.8 4.7 166 16.5 9.0 183
Spring Creek Divide 9000 9.6 7.6 126 15.1 8.7 174
Thumb Divide 7980 4.8 4.4 109 10.8 7.1 152
Togwotee Pass 9580 10.7 8.9 120 14.5 9.4 154
Two Ocean Plateau 9240 15.3 10.5 146 17.1 10.5 163
Willow Creek 8380 8.7 8.1 107 19.3 12.7 152
Younts Peak 8350 5.7 5.4 106 10.3 6.3 163
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Basin Index (%) 126 166
MADISON-GALLATIN
Black Bear 8170 12.3 13.2 93 21.9 14.3 153
Canyon 7870 -M 4.0 * -M 6.3 *
Madison Plateau 7750 6.3 7.6 83 16.4 9.8 167
West Yellowstone 6700 3.3 3.1 106 10.5 5.6 188
Whiskey Creek 6800 3.7 4.5 82 11.4 7.9 144
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Basin Index (%) 90 160
YELLOWSTONE
Beartooth Lake 9360 -M 7.8 * 5.9 7.3 81
Burnt Mtn 5880 2.6 1.6 162 6.3 6.0 105
Canyon 7870 -M 4.0 * -M 6.3 *
Cole Creek 7850 4.0 5.6 71 3.9 5.7 68
Evening Star 9200 11.6 8.9 130 17.4 10.8 161
Fisher Creek 9100 11.4 11.5 99 16.7 12.1 138
Northeast Entrance 7350 3.6 2.6 138 8.9 5.1 175
Parker Peak 9400 -M 7.8 * 13.0 7.1 183
Sylvan Lake 8420 7.0 7.1 99 17.2 9.2 187
Thumb Divide 7980 4.8 4.4 109 10.8 7.1 152
Two Ocean Plateau 9240 15.3 10.5 146 17.1 10.5 163
White Mill 8700 9.3 7.8 119 13.1 9.2 142
Wolverine 7650 5.3 3.3 161 8.9 5.2 171
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Basin Index (%) 118 146
WIND RIVER
Burroughs Creek 8750 6.3 -M * 8.6 -M *
Castle Creek 8400 3.4 -M * 5.6 -M *
Cold Springs 9630 3.1 2.7 115 5.3 4.3 123
Deer Park 9700 5.7 5.0 114 9.5 7.2 132
Hobbs Park 10100 6.3 5.8 109 7.0 5.4 130
Kirwin 9550 -M 4.0 * 7.8 4.8 162
Little Warm 9370 2.9 3.7 78 7.3 5.2 140
Owl Creek 8975 1.9 2.2 86 3.4 2.6 131
South Pass 9040 5.7 5.2 110 6.2 7.0 89
St. Lawrence Alt 8620 1.6 2.6 62 4.8 3.8 126
Togwotee Pass 9580 10.7 8.9 120 14.5 9.4 154
Townsend Creek 8700 2.5 3.2 78 5.6 5.1 110
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Basin Index (%) 103 130
BIGHORN BASIN
Bald Mtn. 9380 8.8 6.8 129 7.4 6.5 114
Bear Trap Meadow 8200 1.3 2.0 65 3.3 3.7 89
Bone Springs Div 9350 5.8 6.1 95 6.8 5.9 115
Grave Springs 8550 2.0 2.5 80 3.5 4.2 83
Kirwin 9550 -M 4.0 * 7.8 4.8 162
Marquette 8760 3.6 -M * 5.8 -M *
Middle Powder 7760 2.6 3.7 70 3.4 5.2 65
Owl Creek 8975 1.9 2.2 86 3.4 2.6 131
Powder River Pass 9480 1.3 3.7 35 4.3 5.0 86
Shell Creek 9580 6.7 5.9 114 5.9 5.5 107
Timber Creek 7950 2.2 2.0 110 3.6 3.6 100
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Basin Index (%) 93 105
SHOSHONE RIVER
Blackwater 9780 13.4 8.6 156 -M 8.4 *
Evening Star 9200 11.6 8.9 130 17.4 10.8 161
Marquette 8760 3.6 -M * 5.8 -M *
Sylvan Road 7120 4.8 4.0 120 14.0 7.6 184
Younts Peak 8350 5.7 5.4 106 10.3 6.3 163
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Basin Index (%) 132 169
POWDER RIVER
Bear Trap Meadow 8200 1.3 2.0 65 3.3 3.7 89
Cloud Peak Reservoir 9860 3.0 4.9 61 5.3 5.5 96
Grave Springs 8550 2.0 2.5 80 3.5 4.2 83
Hansen Sawmill 8360 1.9 2.2 86 3.4 3.6 94
Middle Powder 7760 2.6 3.7 70 3.4 5.2 65
Powder River Pass 9480 1.3 3.7 35 4.3 5.0 86
Soldier Park 8720 1.9 -M * 4.1 -M *
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Basin Index (%) 64 85
TONGUE RIVER
Big Goose 7990 2.7 3.0 90 3.8 4.6 83
Bone Springs Div 9350 5.8 6.1 95 6.8 5.9 115
Burgess Junction 7880 2.9 3.8 76 4.7 5.0 94
Dome Lake 8880 2.6 4.4 59 5.3 5.8 91
Little Goose 8870 3.0 -M * 5.0 -M *
Sucker Creek 8880 3.7 4.0 92 4.6 5.6 82
Tie Creek 6870 2.2 1.1 200 4.9 4.7 104
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Basin Index (%) 89 95
BELLE FOURCHE
Cole Canyon 5910 1.7 1.1 155 2.8 4.0 70
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Basin Index (%) 155 70
CHEYENNE RIVER BASIN
Blind Park 6890 2.6 2.1 124 3.8 5.1 75
North Rapid Creek 6130 2.3 2.4 96 2.6 4.3 60
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Basin Index (%) 109 68
UPPER N. PLATTE
Arapaho Ridge 10960 7.8 7.4 105 9.6 9.0 107
Blackhall Mtn 9820 8.8 -M * 11.2 -M *
Columbine 9160 7.6 6.5 117 10.2 9.3 110
Divide Peak 8880 4.8 6.2 77 7.2 8.4 86
Joe Wright 10120 5.2 7.8 67 10.1 10.0 101
Laprele Creek 8375 2.5 2.9 86 3.0 5.0 60
Med Bow 10500 12.2 -M * 13.0 -M *
North French Creek 10130 7.4 9.2 80 9.4 9.7 97
Never Summer 10280 6.4 6.7 96 6.9 -M *
Old Battle 10000 7.8 10.1 77 9.4 13.2 71
Rawah 9020 3.9 3.5 111 6.6 6.0 110
Sage Creek Basin 7850 3.3 4.0 82 4.7 5.7 82
Sand Lake 10050 8.4 9.2 91 8.4 9.2 91
South Brush Creek 8440 2.8 3.7 76 4.6 5.9 78
Tower 10500 10.8 15.6 69 13.5 15.0 90
Webber Springs 9250 5.7 7.7 74 9.1 10.1 90
Willow Creek Pass 9540 4.8 4.4 109 6.1 5.5 111
Zirkel 9340 8.7 7.3 119 12.6 11.0 115
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Basin Index (%) 87 94
SWEETWATER
Deer Park 9700 5.7 5.0 114 9.5 7.2 132
Larsen Creek 9000 4.0 3.7 108 8.4 -M *
South Pass 9040 5.7 5.2 110 6.2 7.0 89
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Basin Index (%) 111 111
LOWER N. PLATTE
Casper Mtn. 7900 3.0 4.6 65 3.9 6.4 61
Laprele Creek 8375 2.5 2.9 86 3.0 5.0 60
Reno Hill 8400 -M 4.8 * -M 6.0 *
Windy Peak 7900 2.0 2.4 83 2.8 4.4 64
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Basin Index (%) 76 61
LARAMIE RIVER
Brooklyn Lake 10240 5.7 6.4 89 6.3 7.5 84
Cinnabar Park 9574 5.4 7.3 74 8.0 9.1 88
Crow Creek 8330 2.0 3.6 56 3.5 4.4 80
Deadman Hill 10220 6.2 5.6 111 6.7 6.4 105
Rawah 9020 3.9 3.5 111 6.6 6.0 110
Roach 9700 -M 5.1 * -M 7.2 *
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Basin Index (%) 88 93
S. PLATTE
Black Mountain 8920 3.2 -M * 4.7 -M *
Crow Creek 8330 2.0 3.6 56 3.5 4.4 80
Deadman Hill 10220 6.2 5.6 111 6.7 6.4 105
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Basin Index (%) 89 94
LITTLE SNAKE RIVER
Battle Mountain 7440 3.0 2.7 111 5.8 5.8 100
Divide Peak 8880 4.8 6.2 77 7.2 8.4 86
Elk River 8700 5.2 4.8 108 6.7 7.3 92
Little Snake River 8915 7.2 5.8 124 11.9 11.7 102
Old Battle 10000 7.8 10.1 77 9.4 13.2 71
Sage Creek Basin 7850 3.3 4.0 82 4.7 5.7 82
Sandstone RS 8150 3.4 3.5 97 3.8 7.0 54
Whiskey Park 8950 7.0 7.3 96 10.1 9.7 104
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Basin Index (%) 94 87
UPPER GREEN RIVER
Big Sandy Opening 9080 6.1 4.6 133 8.8 5.1 173
Blind Bull Sum 8650 11.6 7.2 161 12.7 7.6 167
East Rim Divide 7930 4.5 3.1 145 7.9 4.4 180
Elkhart Park G.S. 9400 4.4 4.2 105 9.6 5.2 185
Gros Ventre Summit 8750 4.7 4.6 102 9.1 5.1 178
Gunsight Pass 9820 5.2 4.2 124 9.5 5.2 183
Kendall R.S. 7740 6.0 3.5 171 10.3 5.2 198
Loomis Park 8240 6.6 4.6 143 11.8 6.4 184
New Fork Lake 8340 5.0 3.3 152 5.8 4.2 138
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 4.5 3.7 122 9.7 5.2 187
Spring Creek Divide 9000 9.6 7.6 126 15.1 8.7 174
Triple Peak 8500 11.4 6.5 175 16.3 8.9 183
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Basin Index (%) 139 178
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.7 -M * 5.1 -M *
Buck Pasture 9700 5.1 -M * 7.5 -M *
EF Blacks Fork GS 9360 4.4 -M * 5.5 -M *
Hams Fork 7840 4.0 3.3 121 7.8 4.2 186
Hewinta 9519 3.4 2.8 121 5.6 5.6 100
Hickerson Park 9145 3.1 2.0 155 3.9 4.3 91
Hole-in-Rock 9150 2.0 2.3 87 3.9 4.1 95
Indian Creek 9425 8.9 7.8 114 12.6 7.8 162
Kelley R.S. 8180 6.2 4.4 141 11.6 6.7 173
Spirit Lk 10235 3.8 -M * 6.3 -M *
Steel Creek Park 10200 5.3 5.3 100 7.0 6.4 109
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Basin Index (%) 118 134
UPPER BEAR RIVER
Bear River RS 8777 3.3 -M * 5.2 -M *
Bug Lake 7950 7.8 5.1 153 9.8 7.4 132
Burts Miller Ranch 8000 1.9 -M * 3.1 -M *
Chalk Creek #1 8993 8.1 8.1 100 10.1 9.6 105
Hayden Fork 9212 5.8 4.1 141 9.5 7.9 120
Kelley R.S. 8180 6.2 4.4 141 11.6 6.7 173
Lily Lake 9156 3.7 4.2 88 5.7 6.8 84
Monte Cristo 8960 7.8 7.8 100 11.2 9.5 118
Salt River Summit 7760 3.7 3.3 112 9.6 5.9 163
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Basin Index (%) 116 125
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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.