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 23 , 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 9.4 6.2 152 16.9 8.9 190
Black Bear 8170 13.9 15.0 93 23.3 15.7 148
Blind Bull Sum 8650 12.5 8.0 156 14.2 8.2 173
Cottonwood Creek 7670 8.9 7.3 122 15.7 9.9 159
East Rim Divide 7930 5.0 3.7 135 8.3 4.8 173
Grand Targhee 9260 21.5 15.1 142 21.0 13.2 159
Granite Creek 6770 7.8 5.0 156 14.2 8.2 173
Grassy Lake 7265 13.3 10.6 125 24.7 14.8 167
Gros Ventre Summit 8750 5.2 5.1 102 9.6 5.4 178
Gunsight Pass 9820 6.2 4.7 132 10.5 5.6 188
Lewis Lake Divide 7850 11.0 10.9 101 22.8 14.7 155
Phillips Bench 8200 9.2 9.1 101 18.4 11.1 166
Salt River Summit 7760 4.5 4.0 112 10.5 6.6 159
Snake River Station 6920 8.8 5.4 163 17.6 9.7 181
Spring Creek Divide 9000 11.0 8.3 133 16.4 9.6 171
Thumb Divide 7980 5.5 5.3 104 11.5 7.7 149
Togwotee Pass 9580 12.6 9.8 129 16.2 10.2 159
Two Ocean Plateau 9240 16.9 11.0 154 18.2 11.3 161
Willow Creek 8380 10.4 9.4 111 21.3 13.8 154
Younts Peak 8350 7.0 6.0 117 11.6 6.8 171
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Basin Index (%) 125 165
MADISON-GALLATIN
Black Bear 8170 13.9 15.0 93 23.3 15.7 148
Canyon 7870 6.0 4.6 130 12.0 7.0 171
Madison Plateau 7750 7.5 9.1 82 17.4 10.7 163
West Yellowstone 6700 4.0 3.9 103 11.7 6.1 192
Whiskey Creek 6800 4.3 5.7 75 12.2 8.6 142
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Basin Index (%) 93 159
YELLOWSTONE
Beartooth Lake 9360 11.1 8.8 126 -M 8.1 *
Burnt Mtn 5880 3.0 1.8 167 6.8 6.4 106
Canyon 7870 6.0 4.6 130 12.0 7.0 171
Cole Creek 7850 4.7 5.7 82 4.6 6.1 75
Evening Star 9200 13.4 9.8 137 19.3 11.7 165
Fisher Creek 9100 12.6 13.3 95 18.0 13.3 135
Northeast Entrance 7350 4.3 3.0 143 9.4 5.5 171
Parker Peak 9400 11.5 8.6 134 14.6 7.7 190
Sylvan Lake 8420 9.0 8.1 111 19.1 10.0 191
Thumb Divide 7980 5.5 5.3 104 11.5 7.7 149
Two Ocean Plateau 9240 16.9 11.0 154 18.2 11.3 161
White Mill 8700 10.5 8.8 119 13.9 10.1 138
Wolverine 7650 5.8 4.0 145 9.5 5.6 170
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Basin Index (%) 123 153
WIND RIVER
Burroughs Creek 8750 7.5 -M * 9.9 -M *
Castle Creek 8400 4.1 -M * 6.2 -M *
Cold Springs 9630 3.6 2.9 124 6.0 4.6 130
Deer Park 9700 7.8 5.4 144 11.8 7.7 153
Hobbs Park 10100 7.1 6.0 118 8.0 5.7 140
Kirwin 9550 6.1 4.1 149 9.0 5.1 176
Little Warm 9370 3.6 4.0 90 8.4 5.6 150
Owl Creek 8975 2.2 2.3 96 3.6 2.6 138
South Pass 9040 7.7 5.7 135 8.5 7.5 113
St. Lawrence Alt 8620 1.5 2.6 58 5.2 4.0 130
Togwotee Pass 9580 12.6 9.8 129 16.2 10.2 159
Townsend Creek 8700 3.0 3.5 86 5.9 5.4 109
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Basin Index (%) 119 141
BIGHORN BASIN
Bald Mtn. 9380 9.2 7.3 126 8.1 7.2 112
Bear Trap Meadow 8200 1.4 2.4 58 3.4 3.9 87
Bone Springs Div 9350 6.3 6.7 94 7.3 6.5 112
Grave Springs 8550 2.3 2.9 79 3.8 4.6 83
Kirwin 9550 6.1 4.1 149 9.0 5.1 176
Marquette 8760 3.4 -M * 6.4 -M *
Middle Powder 7760 2.8 4.4 64 3.6 5.7 63
Owl Creek 8975 2.2 2.3 96 3.6 2.6 138
Powder River Pass 9480 1.6 4.1 39 4.5 5.4 83
Shell Creek 9580 7.0 6.6 106 6.0 6.0 100
Timber Creek 7950 2.5 1.9 132 3.9 3.8 103
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Basin Index (%) 97 105
SHOSHONE RIVER
Blackwater 9780 14.7 9.4 156 17.9 9.0 199
Evening Star 9200 13.4 9.8 137 19.3 11.7 165
Marquette 8760 3.4 -M * 6.4 -M *
Sylvan Road 7120 6.2 4.6 135 16.0 8.2 195
Younts Peak 8350 7.0 6.0 117 11.6 6.8 171
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Basin Index (%) 139 182
POWDER RIVER
Bear Trap Meadow 8200 1.4 2.4 58 3.4 3.9 87
Cloud Peak Reservoir 9860 3.4 5.4 63 5.5 5.8 95
Grave Springs 8550 2.3 2.9 79 3.8 4.6 83
Hansen Sawmill 8360 2.5 2.6 96 4.1 3.8 108
Middle Powder 7760 2.8 4.4 64 3.6 5.7 63
Powder River Pass 9480 1.6 4.1 39 4.5 5.4 83
Soldier Park 8720 3.0 -M * 4.7 -M *
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Basin Index (%) 64 85
TONGUE RIVER
Big Goose 7990 3.2 3.3 97 4.4 5.0 88
Bone Springs Div 9350 6.3 6.7 94 7.3 6.5 112
Burgess Junction 7880 3.4 4.2 81 4.9 5.5 89
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 4.2 4.5 93 5.0 6.2 81
Tie Creek 6870 2.6 1.4 186 5.5 5.1 108
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Basin Index (%) 94 96
BELLE FOURCHE
Cole Canyon 5910 2.2 1.2 183 3.5 4.3 81
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Basin Index (%) 183 81
CHEYENNE RIVER BASIN
Blind Park 6890 2.9 2.5 116 4.2 5.4 78
North Rapid Creek 6130 2.7 2.6 104 3.0 4.6 65
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Basin Index (%) 110 72
UPPER N. PLATTE
Arapaho Ridge 10960 9.9 8.4 118 11.7 9.8 119
Blackhall Mtn 9820 11.2 -M * 13.4 -M *
Columbine 9160 9.2 7.8 118 11.8 10.4 113
Divide Peak 8880 6.0 7.2 83 8.4 9.3 90
Joe Wright 10120 7.1 8.7 82 11.9 11.0 108
Laprele Creek 8375 3.8 3.4 112 4.1 5.4 76
Med Bow 10500 14.0 -M * 14.7 -M *
North French Creek 10130 8.8 10.4 85 10.8 10.8 100
Never Summer 10280 8.3 7.7 108 8.6 -M *
Old Battle 10000 10.6 11.4 93 11.8 14.7 80
Rawah 9020 5.1 3.8 134 7.9 6.7 118
Sage Creek Basin 7850 4.3 4.8 90 5.6 6.4 88
Sand Lake 10050 9.8 10.2 96 9.7 10.1 96
South Brush Creek 8440 3.3 4.2 79 5.0 6.5 77
Tower 10500 13.4 17.9 75 16.7 16.6 101
Webber Springs 9250 8.1 8.5 95 11.6 11.2 104
Willow Creek Pass 9540 6.7 5.0 134 8.0 5.9 136
Zirkel 9340 10.8 8.3 130 14.5 12.1 120
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Basin Index (%) 98 102
SWEETWATER
Deer Park 9700 7.8 5.4 144 11.8 7.7 153
Larsen Creek 9000 5.8 4.2 138 10.0 -M *
South Pass 9040 7.7 5.7 135 8.5 7.5 113
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Basin Index (%) 139 134
LOWER N. PLATTE
Casper Mtn. 7900 3.9 5.2 75 4.8 6.8 71
Laprele Creek 8375 3.8 3.4 112 4.1 5.4 76
Reno Hill 8400 -M 5.2 * -M 6.5 *
Windy Peak 7900 3.2 2.8 114 4.2 4.7 89
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Basin Index (%) 96 78
LARAMIE RIVER
Brooklyn Lake 10240 7.1 7.2 99 7.6 8.3 92
Cinnabar Park 9574 6.6 7.7 86 9.3 10.1 92
Crow Creek 8330 2.1 3.9 54 3.7 4.9 76
Deadman Hill 10220 7.3 6.5 112 7.7 7.1 108
Rawah 9020 5.1 3.8 134 7.9 6.7 118
Roach 9700 5.1 6.0 85 6.8 8.1 84
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Basin Index (%) 95 95
S. PLATTE
Black Mountain 8920 3.6 -M * 5.3 -M *
Crow Creek 8330 2.1 3.9 54 3.7 4.9 76
Deadman Hill 10220 7.3 6.5 112 7.7 7.1 108
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Basin Index (%) 90 95
LITTLE SNAKE RIVER
Battle Mountain 7440 3.4 3.3 103 6.4 6.4 100
Divide Peak 8880 6.0 7.2 83 8.4 9.3 90
Elk River 8700 7.4 5.7 130 8.5 8.1 105
Little Snake River 8915 10.3 7.2 143 15.3 13.1 117
Old Battle 10000 10.6 11.4 93 11.8 14.7 80
Sage Creek Basin 7850 4.3 4.8 90 5.6 6.4 88
Sandstone RS 8150 4.6 4.0 115 5.4 7.8 69
Whiskey Park 8950 8.7 8.4 104 11.7 10.8 108
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Basin Index (%) 106 95
UPPER GREEN RIVER
Big Sandy Opening 9080 7.2 4.9 147 10.0 5.6 179
Blind Bull Sum 8650 12.5 8.0 156 14.2 8.2 173
East Rim Divide 7930 5.0 3.7 135 8.3 4.8 173
Elkhart Park G.S. 9400 4.7 4.7 100 10.1 5.7 177
Gros Ventre Summit 8750 5.2 5.1 102 9.6 5.4 178
Gunsight Pass 9820 6.2 4.7 132 10.5 5.6 188
Kendall R.S. 7740 6.7 4.1 163 11.0 5.7 193
Loomis Park 8240 7.9 5.4 146 13.2 7.0 189
New Fork Lake 8340 5.2 3.8 137 6.1 4.5 136
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 5.1 4.5 113 10.4 5.8 179
Spring Creek Divide 9000 11.0 8.3 133 16.4 9.6 171
Triple Peak 8500 12.7 7.4 172 17.5 9.7 180
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Basin Index (%) 138 177
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 5.2 -M * 5.8 -M *
Hams Fork 7840 4.3 3.8 113 8.1 4.6 176
Hewinta 9519 4.0 3.3 121 6.3 6.0 105
Hickerson Park 9145 3.4 2.3 148 3.8 4.6 83
Hole-in-Rock 9150 2.3 2.6 88 4.2 4.3 98
Indian Creek 9425 10.3 9.1 113 14.4 8.7 166
Kelley R.S. 8180 7.1 5.3 134 12.6 7.4 170
Spirit Lk 10235 4.5 -M * 6.8 -M *
Steel Creek Park 10200 6.0 5.7 105 7.9 6.8 116
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Basin Index (%) 117 135
UPPER BEAR RIVER
Bear River RS 8777 4.1 -M * 6.1 -M *
Bug Lake 7950 8.4 5.6 150 10.4 8.0 130
Burts Miller Ranch 8000 2.4 -M * 3.4 -M *
Chalk Creek #1 8993 9.6 9.2 104 12.0 10.5 114
Hayden Fork 9212 6.8 4.6 148 10.9 8.6 127
Kelley R.S. 8180 7.1 5.3 134 12.6 7.4 170
Lily Lake 9156 4.6 4.6 100 6.9 7.4 93
Monte Cristo 8960 9.3 9.0 103 13.0 10.4 125
Salt River Summit 7760 4.5 4.0 112 10.5 6.6 159
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Basin Index (%) 119 130
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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.