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 THURSDAY: DECEMBER 15 , 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 6.4 5.4 119 13.8 8.1 170
Black Bear 8170 10.1 13.0 78 19.9 14.1 141
Blind Bull Sum 8650 9.6 7.0 137 11.3 7.5 151
Cottonwood Creek 7670 7.2 6.4 112 14.1 8.9 158
East Rim Divide 7930 3.9 3.0 130 7.3 4.4 166
Grand Targhee 9260 20.1 12.8 157 19.2 12.0 160
Granite Creek 6770 5.7 4.2 136 12.1 7.3 166
Grassy Lake 7265 9.0 9.2 98 20.9 13.1 160
Gros Ventre Summit 8750 4.1 4.6 89 8.5 5.0 170
Gunsight Pass 9820 4.3 4.2 102 8.8 5.1 173
Lewis Lake Divide 7850 7.3 9.5 77 19.0 13.2 144
Phillips Bench 8200 6.8 7.9 86 16.1 10.0 161
Salt River Summit 7760 3.3 3.2 103 9.1 5.8 157
Snake River Station 6920 6.3 4.6 137 15.0 8.8 170
Spring Creek Divide 9000 8.8 7.3 121 14.3 8.6 166
Thumb Divide 7980 3.5 4.3 81 9.7 7.0 139
Togwotee Pass 9580 9.6 8.8 109 13.3 9.3 143
Two Ocean Plateau 9240 13.1 10.4 126 15.2 10.4 146
Willow Creek 8380 8.0 8.0 100 18.7 12.5 150
Younts Peak 8350 4.2 5.3 79 9.0 6.2 145
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Basin Index (%) 109 155
MADISON-GALLATIN
Black Bear 8170 10.1 13.0 78 19.9 14.1 141
Canyon 7870 3.5 3.8 92 9.5 6.2 153
Madison Plateau 7750 4.8 7.5 64 15.1 9.7 156
West Yellowstone 6700 2.5 3.0 83 9.8 5.5 178
Whiskey Creek 6800 2.5 4.4 57 10.1 7.8 129
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Basin Index (%) 74 149
YELLOWSTONE
Beartooth Lake 9360 7.8 7.6 103 5.7 7.2 79
Burnt Mtn 5880 2.3 1.6 144 6.0 5.9 102
Canyon 7870 3.5 3.8 92 9.5 6.2 153
Cole Creek 7850 4.0 5.5 73 4.0 5.6 71
Evening Star 9200 -M 8.8 * -M 10.6 *
Fisher Creek 9100 9.4 11.3 83 15.0 12.0 125
Northeast Entrance 7350 2.6 2.6 100 8.0 5.0 160
Parker Peak 9400 8.9 7.6 117 11.9 7.0 170
Sylvan Lake 8420 6.2 6.9 90 16.3 9.1 179
Thumb Divide 7980 3.5 4.3 81 9.7 7.0 139
Two Ocean Plateau 9240 13.1 10.4 126 15.2 10.4 146
White Mill 8700 7.1 7.6 93 10.9 9.1 120
Wolverine 7650 4.1 3.3 124 7.9 5.1 155
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Basin Index (%) 100 134
WIND RIVER
Burroughs Creek 8750 5.0 -M * 7.3 -M *
Castle Creek 8400 2.4 -M * 4.7 -M *
Cold Springs 9630 2.7 2.6 104 5.0 4.3 116
Deer Park 9700 5.1 5.0 102 8.9 7.1 125
Hobbs Park 10100 5.4 5.8 93 6.7 5.3 126
Kirwin 9550 4.2 3.9 108 6.8 4.8 142
Little Warm 9370 2.5 3.6 69 7.0 5.2 135
Owl Creek 8975 1.6 2.1 76 3.1 2.5 124
South Pass 9040 5.0 5.2 96 5.8 7.0 83
St. Lawrence Alt 8620 1.4 2.6 54 4.5 3.8 118
Togwotee Pass 9580 9.6 8.8 109 13.3 9.3 143
Townsend Creek 8700 -M 3.2 * -M 5.1 *
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Basin Index (%) 95 124
BIGHORN BASIN
Bald Mtn. 9380 8.3 6.7 124 7.0 6.4 109
Bear Trap Meadow 8200 1.1 2.0 55 3.0 3.7 81
Bone Springs Div 9350 5.4 6.1 89 6.4 5.8 110
Grave Springs 8550 1.9 2.4 79 3.4 4.2 81
Kirwin 9550 4.2 3.9 108 6.8 4.8 142
Marquette 8760 3.3 -M * 5.4 -M *
Middle Powder 7760 2.5 3.6 69 3.2 5.2 62
Owl Creek 8975 1.6 2.1 76 3.1 2.5 124
Powder River Pass 9480 1.2 3.7 32 4.0 4.9 82
Shell Creek 9580 6.5 5.8 112 5.6 5.5 102
Timber Creek 7950 2.1 2.0 105 3.5 3.5 100
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Basin Index (%) 91 99
SHOSHONE RIVER
Blackwater 9780 11.7 8.4 139 15.0 8.3 181
Evening Star 9200 -M 8.8 * -M 10.6 *
Marquette 8760 3.3 -M * 5.4 -M *
Sylvan Road 7120 3.8 3.9 97 13.0 7.4 176
Younts Peak 8350 4.2 5.3 79 9.0 6.2 145
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Basin Index (%) 112 169
POWDER RIVER
Bear Trap Meadow 8200 1.1 2.0 55 3.0 3.7 81
Cloud Peak Reservoir 9860 2.7 4.8 56 5.0 5.4 93
Grave Springs 8550 1.9 2.4 79 3.4 4.2 81
Hansen Sawmill 8360 1.7 2.1 81 3.3 3.5 94
Middle Powder 7760 2.5 3.6 69 3.2 5.2 62
Powder River Pass 9480 1.2 3.7 32 4.0 4.9 82
Soldier Park 8720 1.7 -M * 3.9 -M *
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Basin Index (%) 60 81
TONGUE RIVER
Big Goose 7990 2.5 3.0 83 3.7 4.6 80
Bone Springs Div 9350 5.4 6.1 89 6.4 5.8 110
Burgess Junction 7880 2.7 3.7 73 4.4 4.9 90
Dome Lake 8880 2.4 4.3 56 5.1 5.8 88
Little Goose 8870 2.8 -M * 4.8 -M *
Sucker Creek 8880 3.5 4.0 88 4.3 5.6 77
Tie Creek 6870 2.1 1.1 191 5.0 4.7 106
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Basin Index (%) 84 92
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 2.4 2.0 120 3.7 5.0 74
North Rapid Creek 6130 2.1 2.3 91 2.3 4.2 55
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Basin Index (%) 105 65
UPPER N. PLATTE
Arapaho Ridge 10960 7.5 7.3 103 9.4 8.9 106
Blackhall Mtn 9820 8.5 -M * 10.8 -M *
Columbine 9160 7.3 6.3 116 9.8 9.1 108
Divide Peak 8880 4.6 6.1 75 7.1 8.3 86
Joe Wright 10120 5.2 7.6 68 10.0 9.9 101
Laprele Creek 8375 2.3 2.9 79 2.7 4.9 55
Med Bow 10500 12.1 -M * 13.0 -M *
North French Creek 10130 7.3 9.1 80 9.2 9.6 96
Never Summer 10280 6.1 6.5 94 6.9 -M *
Old Battle 10000 7.4 9.8 76 8.5 12.9 66
Rawah 9020 3.9 3.4 115 6.4 6.0 107
Sage Creek Basin 7850 3.2 4.0 80 4.6 5.7 81
Sand Lake 10050 8.2 9.0 91 8.3 9.1 91
South Brush Creek 8440 2.6 3.6 72 4.2 5.9 71
Tower 10500 10.2 15.2 67 12.9 14.9 87
Webber Springs 9250 5.2 7.5 69 8.8 9.8 90
Willow Creek Pass 9540 4.7 4.3 109 5.8 5.4 107
Zirkel 9340 8.5 7.1 120 12.4 10.9 114
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Basin Index (%) 86 91
SWEETWATER
Deer Park 9700 5.1 5.0 102 8.9 7.1 125
Larsen Creek 9000 3.6 3.6 100 8.0 -M *
South Pass 9040 5.0 5.2 96 5.8 7.0 83
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Basin Index (%) 99 104
LOWER N. PLATTE
Casper Mtn. 7900 2.7 4.5 60 3.6 6.3 57
Laprele Creek 8375 2.3 2.9 79 2.7 4.9 55
Reno Hill 8400 -M 4.8 * -M 6.0 *
Windy Peak 7900 2.0 2.3 87 2.7 4.3 63
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Basin Index (%) 72 58
LARAMIE RIVER
Brooklyn Lake 10240 5.5 6.2 89 6.1 7.4 82
Cinnabar Park 9574 5.3 7.2 74 8.0 9.0 89
Crow Creek 8330 1.9 3.5 54 3.3 4.4 75
Deadman Hill 10220 6.1 5.5 111 6.6 6.4 103
Rawah 9020 3.9 3.4 115 6.4 6.0 107
Roach 9700 -M 5.0 * -M 7.2 *
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Basin Index (%) 88 92
S. PLATTE
Black Mountain 8920 3.2 -M * 4.8 -M *
Crow Creek 8330 1.9 3.5 54 3.3 4.4 75
Deadman Hill 10220 6.1 5.5 111 6.6 6.4 103
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Basin Index (%) 89 92
LITTLE SNAKE RIVER
Battle Mountain 7440 3.0 2.6 115 5.7 5.7 100
Divide Peak 8880 4.6 6.1 75 7.1 8.3 86
Elk River 8700 4.8 4.6 104 6.5 7.2 90
Little Snake River 8915 6.7 5.6 120 11.3 11.6 97
Old Battle 10000 7.4 9.8 76 8.5 12.9 66
Sage Creek Basin 7850 3.2 4.0 80 4.6 5.7 81
Sandstone RS 8150 3.4 3.4 100 3.7 6.9 54
Whiskey Park 8950 6.8 7.2 94 10.0 9.6 104
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Basin Index (%) 92 85
UPPER GREEN RIVER
Big Sandy Opening 9080 5.6 4.5 124 8.4 5.1 165
Blind Bull Sum 8650 9.6 7.0 137 11.3 7.5 151
East Rim Divide 7930 3.9 3.0 130 7.3 4.4 166
Elkhart Park G.S. 9400 4.0 4.2 95 9.2 5.1 180
Gros Ventre Summit 8750 4.1 4.6 89 8.5 5.0 170
Gunsight Pass 9820 4.3 4.2 102 8.8 5.1 173
Kendall R.S. 7740 -M 3.5 * -M 5.2 *
Loomis Park 8240 5.6 4.5 124 10.9 6.3 173
New Fork Lake 8340 4.6 3.2 144 5.4 4.2 129
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 4.1 3.6 114 9.4 5.1 184
Spring Creek Divide 9000 8.8 7.3 121 14.3 8.6 166
Triple Peak 8500 10.2 6.3 162 15.1 8.8 172
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Basin Index (%) 124 167
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.7 -M * 5.1 -M *
Buck Pasture 9700 5.1 -M * 7.4 -M *
EF Blacks Fork GS 9360 3.6 -M * 5.1 -M *
Hams Fork 7840 3.6 3.2 112 7.5 4.2 179
Hewinta 9519 3.3 2.7 122 5.7 5.5 104
Hickerson Park 9145 -M 2.0 * -M 4.3 *
Hole-in-Rock 9150 2.0 2.2 91 4.0 4.0 100
Indian Creek 9425 8.3 7.6 109 11.9 7.7 155
Kelley R.S. 8180 5.6 4.3 130 11.1 6.6 168
Spirit Lk 10235 3.8 -M * 6.2 -M *
Steel Creek Park 10200 5.2 5.2 100 7.0 6.3 111
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Basin Index (%) 111 138
UPPER BEAR RIVER
Bear River RS 8777 3.3 -M * 5.2 -M *
Bug Lake 7950 7.1 5.0 142 8.9 7.3 122
Burts Miller Ranch 8000 1.8 -M * 3.0 -M *
Chalk Creek #1 8993 7.6 8.0 95 9.8 9.6 102
Hayden Fork 9212 5.5 4.0 138 9.3 7.8 119
Kelley R.S. 8180 5.6 4.3 130 11.1 6.6 168
Lily Lake 9156 3.7 4.1 90 6.0 6.7 90
Monte Cristo 8960 7.0 7.6 92 10.7 9.4 114
Salt River Summit 7760 3.3 3.2 103 9.1 5.8 157
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Basin Index (%) 110 122
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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.