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 SATURDAY: DECEMBER 24 , 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 9.5 6.3 151 17.1 8.9 192
Black Bear 8170 14.3 15.2 94 23.9 15.8 151
Blind Bull Sum 8650 12.8 8.1 158 14.4 8.3 173
Cottonwood Creek 7670 9.0 7.4 122 16.0 10.0 160
East Rim Divide 7930 5.2 3.7 141 8.5 4.8 177
Grand Targhee 9260 21.9 15.5 141 21.4 13.5 159
Granite Creek 6770 8.1 5.2 156 14.4 8.2 176
Grassy Lake 7265 13.6 10.7 127 25.4 14.9 170
Gros Ventre Summit 8750 5.4 5.2 104 9.9 5.5 180
Gunsight Pass 9820 6.4 4.8 133 10.7 5.6 191
Lewis Lake Divide 7850 11.4 11.1 103 23.0 14.9 154
Phillips Bench 8200 9.5 9.3 102 18.8 11.2 168
Salt River Summit 7760 4.8 4.1 117 10.8 6.6 164
Snake River Station 6920 9.0 5.5 164 17.2 9.8 176
Spring Creek Divide 9000 11.2 8.4 133 16.6 9.6 173
Thumb Divide 7980 5.8 5.4 107 12.0 7.7 156
Togwotee Pass 9580 12.6 9.9 127 16.3 10.3 158
Two Ocean Plateau 9240 17.0 11.2 152 18.4 11.4 161
Willow Creek 8380 10.6 9.5 112 21.4 14.0 153
Younts Peak 8350 7.2 6.1 118 12.1 6.9 175
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Basin Index (%) 126 166
MADISON-GALLATIN
Black Bear 8170 14.3 15.2 94 23.9 15.8 151
Canyon 7870 5.9 4.6 128 12.2 7.0 174
Madison Plateau 7750 7.9 9.2 86 17.9 10.8 166
West Yellowstone 6700 4.5 3.9 115 11.9 6.1 195
Whiskey Creek 6800 4.8 5.7 84 12.7 8.7 146
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Basin Index (%) 97 162
YELLOWSTONE
Beartooth Lake 9360 11.3 8.9 127 -M 8.2 *
Burnt Mtn 5880 3.0 1.9 158 6.8 6.4 106
Canyon 7870 5.9 4.6 128 12.2 7.0 174
Cole Creek 7850 4.7 5.8 81 4.7 6.1 77
Evening Star 9200 13.5 9.9 136 19.4 11.9 163
Fisher Creek 9100 12.8 13.5 95 18.1 13.4 135
Northeast Entrance 7350 4.2 3.1 135 9.6 5.6 171
Parker Peak 9400 11.7 8.7 134 14.7 7.8 188
Sylvan Lake 8420 9.0 8.2 110 19.2 10.2 188
Thumb Divide 7980 5.8 5.4 107 12.0 7.7 156
Two Ocean Plateau 9240 17.0 11.2 152 18.4 11.4 161
White Mill 8700 10.6 8.9 119 14.2 10.2 139
Wolverine 7650 6.2 4.1 151 10.0 5.7 175
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Basin Index (%) 123 154
WIND RIVER
Burroughs Creek 8750 7.6 -M * 10.2 -M *
Castle Creek 8400 4.3 -M * 6.4 -M *
Cold Springs 9630 3.7 2.9 128 6.1 4.6 133
Deer Park 9700 7.9 5.6 141 11.8 7.8 151
Hobbs Park 10100 7.3 6.0 122 8.3 5.7 146
Kirwin 9550 6.4 4.1 156 9.3 5.1 182
Little Warm 9370 3.7 4.0 92 8.6 5.6 154
Owl Creek 8975 2.3 2.3 100 3.7 2.7 137
South Pass 9040 7.8 5.7 137 8.6 7.6 113
St. Lawrence Alt 8620 1.8 2.7 67 5.4 4.0 135
Togwotee Pass 9580 12.6 9.9 127 16.3 10.3 158
Townsend Creek 8700 3.3 3.6 92 6.2 5.4 115
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Basin Index (%) 121 143
BIGHORN BASIN
Bald Mtn. 9380 9.2 7.4 124 8.2 7.3 112
Bear Trap Meadow 8200 1.5 2.4 62 3.5 3.9 90
Bone Springs Div 9350 6.4 6.8 94 7.4 6.6 112
Grave Springs 8550 2.3 2.9 79 3.8 4.7 81
Kirwin 9550 6.4 4.1 156 9.3 5.1 182
Marquette 8760 3.4 -M * 6.4 -M *
Middle Powder 7760 2.8 4.5 62 3.8 5.8 66
Owl Creek 8975 2.3 2.3 100 3.7 2.7 137
Powder River Pass 9480 1.6 4.2 38 4.7 5.4 87
Shell Creek 9580 7.1 6.7 106 6.2 6.1 102
Timber Creek 7950 2.6 1.9 137 4.0 3.8 105
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Basin Index (%) 98 106
SHOSHONE RIVER
Blackwater 9780 14.8 9.5 156 18.1 9.1 199
Evening Star 9200 13.5 9.9 136 19.4 11.9 163
Marquette 8760 3.4 -M * 6.4 -M *
Sylvan Road 7120 6.4 4.7 136 16.2 8.3 195
Younts Peak 8350 7.2 6.1 118 12.1 6.9 175
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Basin Index (%) 139 182
POWDER RIVER
Bear Trap Meadow 8200 1.5 2.4 62 3.5 3.9 90
Cloud Peak Reservoir 9860 3.7 5.5 67 6.0 5.9 102
Grave Springs 8550 2.3 2.9 79 3.8 4.7 81
Hansen Sawmill 8360 2.6 2.7 96 4.2 3.8 111
Middle Powder 7760 2.8 4.5 62 3.8 5.8 66
Powder River Pass 9480 1.6 4.2 38 4.7 5.4 87
Soldier Park 8720 3.1 -M * 4.8 -M *
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Basin Index (%) 65 88
TONGUE RIVER
Big Goose 7990 3.3 3.3 100 4.5 5.0 90
Bone Springs Div 9350 6.4 6.8 94 7.4 6.6 112
Burgess Junction 7880 3.4 4.3 79 5.1 5.5 93
Dome Lake 8880 3.7 4.8 77 6.0 6.3 95
Little Goose 8870 3.6 -M * 5.7 -M *
Sucker Creek 8880 4.2 4.6 91 5.3 6.3 84
Tie Creek 6870 2.7 1.5 180 5.6 5.2 108
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Basin Index (%) 94 97
BELLE FOURCHE
Cole Canyon 5910 2.2 1.3 169 3.5 4.3 81
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Basin Index (%) 169 81
CHEYENNE RIVER BASIN
Blind Park 6890 3.0 2.6 115 4.3 5.5 78
North Rapid Creek 6130 2.8 2.7 104 3.1 4.6 67
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Basin Index (%) 109 73
UPPER N. PLATTE
Arapaho Ridge 10960 9.9 8.6 115 11.7 9.9 118
Blackhall Mtn 9820 11.3 -M * 13.4 -M *
Columbine 9160 9.1 7.9 115 11.7 10.5 111
Divide Peak 8880 6.0 7.4 81 8.4 9.4 89
Joe Wright 10120 7.1 8.9 80 12.0 11.2 107
Laprele Creek 8375 3.8 3.5 109 4.1 5.5 75
Med Bow 10500 14.0 -M * 14.6 -M *
North French Creek 10130 8.9 10.5 85 10.8 10.9 99
Never Summer 10280 8.3 7.9 105 8.6 -M *
Old Battle 10000 10.6 11.5 92 11.8 14.8 80
Rawah 9020 5.1 3.9 131 7.8 6.8 115
Sage Creek Basin 7850 4.3 5.0 86 5.6 6.5 86
Sand Lake 10050 9.7 10.4 93 9.8 10.3 95
South Brush Creek 8440 3.3 4.3 77 5.0 6.6 76
Tower 10500 13.5 18.1 75 16.9 16.8 101
Webber Springs 9250 8.1 8.6 94 11.7 11.3 104
Willow Creek Pass 9540 6.8 5.0 136 8.0 6.0 133
Zirkel 9340 10.8 8.4 129 14.5 12.3 118
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Basin Index (%) 96 101
SWEETWATER
Deer Park 9700 7.9 5.6 141 11.8 7.8 151
Larsen Creek 9000 6.0 4.3 140 10.2 -M *
South Pass 9040 7.8 5.7 137 8.6 7.6 113
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Basin Index (%) 139 132
LOWER N. PLATTE
Casper Mtn. 7900 3.9 5.3 74 4.8 6.9 70
Laprele Creek 8375 3.8 3.5 109 4.1 5.5 75
Reno Hill 8400 -M 5.3 * -M 6.5 *
Windy Peak 7900 3.2 2.9 110 4.2 4.8 88
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Basin Index (%) 93 76
LARAMIE RIVER
Brooklyn Lake 10240 7.1 7.3 97 7.6 8.4 90
Cinnabar Park 9574 6.6 7.8 85 9.3 10.2 91
Crow Creek 8330 2.1 3.9 54 3.8 5.0 76
Deadman Hill 10220 7.2 6.7 107 7.7 7.2 107
Rawah 9020 5.1 3.9 131 7.8 6.8 115
Roach 9700 5.1 6.2 82 6.8 8.2 83
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Basin Index (%) 93 94
S. PLATTE
Black Mountain 8920 3.6 -M * 5.3 -M *
Crow Creek 8330 2.1 3.9 54 3.8 5.0 76
Deadman Hill 10220 7.2 6.7 107 7.7 7.2 107
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Basin Index (%) 88 94
LITTLE SNAKE RIVER
Battle Mountain 7440 3.4 3.4 100 6.4 6.4 100
Divide Peak 8880 6.0 7.4 81 8.4 9.4 89
Elk River 8700 7.4 5.8 128 8.7 8.2 106
Little Snake River 8915 10.3 7.5 137 15.3 13.3 115
Old Battle 10000 10.6 11.5 92 11.8 14.8 80
Sage Creek Basin 7850 4.3 5.0 86 5.6 6.5 86
Sandstone RS 8150 4.6 4.1 112 5.4 7.8 69
Whiskey Park 8950 8.7 8.4 104 11.7 10.9 107
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Basin Index (%) 104 95
UPPER GREEN RIVER
Big Sandy Opening 9080 7.6 5.0 152 10.3 5.6 184
Blind Bull Sum 8650 12.8 8.1 158 14.4 8.3 173
East Rim Divide 7930 5.2 3.7 141 8.5 4.8 177
Elkhart Park G.S. 9400 4.9 4.8 102 10.2 5.7 179
Gros Ventre Summit 8750 5.4 5.2 104 9.9 5.5 180
Gunsight Pass 9820 6.4 4.8 133 10.7 5.6 191
Kendall R.S. 7740 7.0 4.2 167 11.3 5.7 198
Loomis Park 8240 8.2 5.4 152 13.5 7.1 190
New Fork Lake 8340 5.4 3.9 138 6.4 4.6 139
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 5.3 4.6 115 10.6 5.8 183
Spring Creek Divide 9000 11.2 8.4 133 16.6 9.6 173
Triple Peak 8500 12.8 7.5 171 17.7 9.8 181
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Basin Index (%) 141 179
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.3 -M * 6.0 -M *
Buck Pasture 9700 5.9 -M * 8.7 -M *
EF Blacks Fork GS 9360 5.7 -M * 5.7 -M *
Hams Fork 7840 4.5 3.9 115 8.3 4.6 180
Hewinta 9519 4.1 3.3 124 6.4 6.1 105
Hickerson Park 9145 3.5 2.4 146 4.0 4.6 87
Hole-in-Rock 9150 2.4 2.7 89 4.3 4.3 100
Indian Creek 9425 10.5 9.3 113 14.7 8.8 167
Kelley R.S. 8180 7.3 5.4 135 12.9 7.4 174
Spirit Lk 10235 4.3 -M * 6.8 -M *
Steel Creek Park 10200 6.0 5.8 103 7.9 6.9 114
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Basin Index (%) 117 137
UPPER BEAR RIVER
Bear River RS 8777 4.1 -M * 6.2 -M *
Bug Lake 7950 8.4 5.7 147 10.4 8.1 128
Burts Miller Ranch 8000 2.3 -M * 3.4 -M *
Chalk Creek #1 8993 9.6 9.3 103 11.9 10.6 112
Hayden Fork 9212 6.8 4.7 145 10.9 8.7 125
Kelley R.S. 8180 7.3 5.4 135 12.9 7.4 174
Lily Lake 9156 4.6 4.7 98 6.9 7.5 92
Monte Cristo 8960 9.4 9.0 104 13.0 10.6 123
Salt River Summit 7760 4.8 4.1 117 10.8 6.6 164
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Basin Index (%) 119 129
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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.