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 SUNDAY: JANUARY 1 , 2017
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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 10.3 7.2 143 18.1 10.0 181
Black Bear 8170 15.8 17.8 89 25.1 18.0 139
Blind Bull Sum 8650 13.5 9.1 148 15.0 9.4 160
Cottonwood Creek 7670 9.6 8.5 113 16.4 11.2 146
East Rim Divide 7930 7.0 4.3 163 9.5 5.5 173
Grand Targhee 9260 23.5 17.5 134 22.2 14.8 150
Granite Creek 6770 9.5 6.5 146 15.8 9.5 166
Grassy Lake 7265 15.2 12.8 119 26.7 17.1 156
Gros Ventre Summit 8750 6.3 6.2 102 10.5 6.2 169
Gunsight Pass 9820 7.0 6.1 115 11.3 6.5 174
Lewis Lake Divide 7850 12.4 13.3 93 24.1 17.0 142
Phillips Bench 8200 11.4 11.0 104 20.9 12.9 162
Salt River Summit 7760 5.3 4.9 108 11.2 7.6 147
Snake River Station 6920 9.8 6.4 153 18.4 11.0 167
Spring Creek Divide 9000 12.2 10.2 120 17.6 10.9 161
Thumb Divide 7980 6.4 6.2 103 12.4 8.8 141
Togwotee Pass 9580 13.9 11.1 125 17.6 11.6 152
Two Ocean Plateau 9240 17.8 12.5 142 19.1 12.7 150
Willow Creek 8380 11.3 10.8 105 22.2 15.7 141
Younts Peak 8350 7.9 7.0 113 12.6 7.8 162
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Basin Index (%) 119 155
MADISON-GALLATIN
Black Bear 8170 15.8 17.8 89 25.1 18.0 139
Canyon 7870 6.8 5.5 124 12.8 7.9 162
Madison Plateau 7750 9.2 10.3 89 18.7 12.5 150
West Yellowstone 6700 5.3 4.7 113 12.8 7.2 178
Whiskey Creek 6800 5.9 6.7 88 13.8 9.8 141
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Basin Index (%) 96 150
YELLOWSTONE
Beartooth Lake 9360 11.8 10.0 118 5.8 9.2 63
Burnt Mtn 5880 3.7 1.8 206 7.5 6.8 110
Canyon 7870 6.8 5.5 124 12.8 7.9 162
Cole Creek 7850 5.4 6.3 86 4.7 6.4 73
Evening Star 9200 14.3 11.5 124 20.3 13.2 154
Fisher Creek 9100 13.5 14.7 92 18.9 15.1 125
Northeast Entrance 7350 4.6 4.1 112 9.8 6.2 158
Parker Peak 9400 12.1 9.9 122 15.2 8.6 177
Sylvan Lake 8420 9.6 9.2 104 19.7 11.2 176
Thumb Divide 7980 6.4 6.2 103 12.4 8.8 141
Two Ocean Plateau 9240 17.8 12.5 142 19.1 12.7 150
White Mill 8700 11.3 9.9 114 14.6 11.3 129
Wolverine 7650 7.1 4.8 148 10.7 6.2 173
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Basin Index (%) 117 139
WIND RIVER
Burroughs Creek 8750 8.1 -M * 10.8 -M *
Castle Creek 8400 4.7 -M * 6.8 -M *
Cold Springs 9630 4.2 3.2 131 6.6 5.0 132
Deer Park 9700 9.7 6.6 147 13.7 9.0 152
Hobbs Park 10100 8.1 6.6 123 8.8 6.2 142
Kirwin 9550 6.8 4.3 158 9.8 5.6 175
Little Warm 9370 4.2 4.5 93 9.0 6.2 145
Owl Creek 8975 2.6 2.6 100 4.1 2.9 141
South Pass 9040 9.2 6.7 137 9.6 8.4 114
St. Lawrence Alt 8620 1.6 3.1 52 5.6 4.3 130
Togwotee Pass 9580 13.9 11.1 125 17.6 11.6 152
Townsend Creek 8700 3.8 4.1 93 6.6 5.8 114
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Basin Index (%) 121 141
BIGHORN BASIN
Bald Mtn. 9380 10.4 8.5 122 9.3 7.9 118
Bear Trap Meadow 8200 2.3 2.6 88 3.8 4.2 90
Bone Springs Div 9350 7.6 7.3 104 8.3 7.2 115
Grave Springs 8550 2.9 3.4 85 4.1 5.1 80
Kirwin 9550 6.8 4.3 158 9.8 5.6 175
Marquette 8760 3.5 -M * 6.7 -M *
Middle Powder 7760 3.7 5.0 74 3.9 6.0 65
Owl Creek 8975 2.6 2.6 100 4.1 2.9 141
Powder River Pass 9480 2.5 4.8 52 5.3 6.0 88
Shell Creek 9580 8.5 7.2 118 6.9 6.5 106
Timber Creek 7950 2.8 2.2 127 4.2 3.9 108
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Basin Index (%) 105 108
SHOSHONE RIVER
Blackwater 9780 15.2 10.5 145 19.0 10.0 190
Evening Star 9200 14.3 11.5 124 20.3 13.2 154
Marquette 8760 3.5 -M * 6.7 -M *
Sylvan Road 7120 6.7 5.4 124 16.6 9.0 184
Younts Peak 8350 7.9 7.0 113 12.6 7.8 162
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Basin Index (%) 128 171
POWDER RIVER
Bear Trap Meadow 8200 2.3 2.6 88 3.8 4.2 90
Cloud Peak Reservoir 9860 5.6 6.3 89 7.6 6.2 123
Grave Springs 8550 2.9 3.4 85 4.1 5.1 80
Hansen Sawmill 8360 3.5 3.0 117 5.2 4.0 130
Middle Powder 7760 3.7 5.0 74 3.9 6.0 65
Powder River Pass 9480 2.5 4.8 52 5.3 6.0 88
Soldier Park 8720 6.2 -M * 5.9 -M *
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Basin Index (%) 82 95
TONGUE RIVER
Big Goose 7990 4.4 3.7 119 5.4 5.3 102
Bone Springs Div 9350 7.6 7.3 104 8.3 7.2 115
Burgess Junction 7880 4.2 4.7 89 5.5 5.9 93
Dome Lake 8880 5.2 5.4 96 6.6 6.7 99
Little Goose 8870 4.8 -M * 6.9 -M *
Sucker Creek 8880 5.2 5.2 100 5.7 6.7 85
Tie Creek 6870 3.0 2.1 143 5.9 5.6 105
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Basin Index (%) 104 100
BELLE FOURCHE
Cole Canyon 5910 2.7 2.2 123 3.8 4.7 81
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Basin Index (%) 123 81
CHEYENNE RIVER BASIN
Blind Park 6890 3.1 3.2 97 4.7 6.0 78
North Rapid Creek 6130 3.4 3.2 106 3.7 5.0 74
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Basin Index (%) 102 76
UPPER N. PLATTE
Arapaho Ridge 10960 11.3 9.5 119 12.9 10.9 118
Blackhall Mtn 9820 12.7 -M * 14.8 -M *
Columbine 9160 10.6 8.8 120 12.8 11.6 110
Divide Peak 8880 6.4 8.5 75 9.1 10.4 88
Joe Wright 10120 7.5 9.4 80 13.1 12.1 108
Laprele Creek 8375 4.3 4.0 108 4.5 6.0 75
Med Bow 10500 16.4 -M * 16.6 -M *
North French Creek 10130 9.9 11.7 85 11.8 12.1 98
Never Summer 10280 -M 8.7 * -M -M *
Old Battle 10000 11.8 12.6 94 13.7 16.4 84
Rawah 9020 5.4 4.4 123 8.0 7.3 110
Sage Creek Basin 7850 4.9 5.8 84 6.3 7.6 83
Sand Lake 10050 11.3 11.8 96 11.2 11.2 100
South Brush Creek 8440 4.0 4.8 83 5.4 7.2 75
Tower 10500 14.7 18.6 79 18.5 18.5 100
Webber Springs 9250 9.1 9.6 95 12.5 12.6 99
Willow Creek Pass 9540 7.4 5.4 137 8.6 6.5 132
Zirkel 9340 12.5 10.0 125 16.2 13.8 117
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Basin Index (%) 97 100
SWEETWATER
Deer Park 9700 9.7 6.6 147 13.7 9.0 152
Larsen Creek 9000 7.4 4.9 151 11.3 -M *
South Pass 9040 9.2 6.7 137 9.6 8.4 114
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Basin Index (%) 145 134
LOWER N. PLATTE
Casper Mtn. 7900 5.0 5.9 85 5.6 7.4 76
Laprele Creek 8375 4.3 4.0 108 4.5 6.0 75
Reno Hill 8400 -M 5.8 * -M 7.2 *
Windy Peak 7900 3.4 3.1 110 4.4 5.2 85
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Basin Index (%) 98 78
LARAMIE RIVER
Brooklyn Lake 10240 8.7 7.9 110 8.9 9.3 96
Cinnabar Park 9574 7.6 9.1 84 10.4 11.6 90
Crow Creek 8330 2.2 4.5 49 4.1 5.5 75
Deadman Hill 10220 8.1 7.2 112 8.2 7.8 105
Rawah 9020 5.4 4.4 123 8.0 7.3 110
Roach 9700 5.8 6.9 84 7.5 9.0 83
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Basin Index (%) 94 93
S. PLATTE
Black Mountain 8920 4.3 -M * 5.6 -M *
Crow Creek 8330 2.2 4.5 49 4.1 5.5 75
Deadman Hill 10220 8.1 7.2 112 8.2 7.8 105
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Basin Index (%) 88 92
LITTLE SNAKE RIVER
Battle Mountain 7440 4.1 4.1 100 -M 7.0 *
Divide Peak 8880 6.4 8.5 75 9.1 10.4 88
Elk River 8700 8.3 6.8 122 9.5 9.1 104
Little Snake River 8915 11.5 9.0 128 16.8 14.9 113
Old Battle 10000 11.8 12.6 94 13.7 16.4 84
Sage Creek Basin 7850 4.9 5.8 84 6.3 7.6 83
Sandstone RS 8150 5.0 4.4 114 5.7 8.6 66
Whiskey Park 8950 9.9 9.6 103 13.3 12.2 109
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Basin Index (%) 102 94
UPPER GREEN RIVER
Big Sandy Opening 9080 8.4 6.0 140 11.2 6.3 178
Blind Bull Sum 8650 13.5 9.1 148 15.0 9.4 160
East Rim Divide 7930 7.0 4.3 163 9.5 5.5 173
Elkhart Park G.S. 9400 5.8 5.7 102 11.3 6.4 177
Gros Ventre Summit 8750 6.3 6.2 102 10.5 6.2 169
Gunsight Pass 9820 7.0 6.1 115 11.3 6.5 174
Kendall R.S. 7740 7.6 4.8 158 11.8 6.5 182
Loomis Park 8240 9.5 6.6 144 14.8 8.2 180
New Fork Lake 8340 6.3 4.5 140 7.1 5.1 139
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 6.2 5.2 119 11.5 6.6 174
Spring Creek Divide 9000 12.2 10.2 120 17.6 10.9 161
Triple Peak 8500 14.0 8.3 169 18.9 11.0 172
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Basin Index (%) 135 170
LOWER GREEN RIVER
Blacks Fork Jct 8870 4.5 -M * 6.6 -M *
Buck Pasture 9700 6.7 -M * 9.9 -M *
EF Blacks Fork GS 9360 6.7 -M * 6.0 -M *
Hams Fork 7840 4.9 4.6 107 8.6 5.2 165
Hewinta 9519 4.6 3.8 121 6.8 6.4 106
Hickerson Park 9145 4.2 2.9 145 4.4 5.0 88
Hole-in-Rock 9150 2.9 2.9 100 4.8 4.6 104
Indian Creek 9425 11.6 10.0 116 15.9 10.0 159
Kelley R.S. 8180 8.0 6.2 129 13.6 8.5 160
Spirit Lk 10235 6.4 -M * 8.4 -M *
Steel Creek Park 10200 6.9 6.2 111 8.8 7.5 117
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Basin Index (%) 118 133
UPPER BEAR RIVER
Bear River RS 8777 4.5 -M * 6.6 -M *
Bug Lake 7950 8.1 6.3 129 11.8 9.0 131
Burts Miller Ranch 8000 2.1 -M * 3.2 -M *
Chalk Creek #1 8993 10.3 9.7 106 12.9 11.6 111
Hayden Fork 9212 7.8 5.9 132 12.2 9.6 127
Kelley R.S. 8180 8.0 6.2 129 13.6 8.5 160
Lily Lake 9156 5.1 5.2 98 7.8 8.0 98
Monte Cristo 8960 10.3 10.1 102 14.1 11.8 119
Salt River Summit 7760 5.3 4.9 108 11.2 7.6 147
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Basin Index (%) 114 126
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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.