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: NOVEMBER 10 , 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 3.9 1.0 390* 5.3 3.2 166
Black Bear 8170 6.9 4.5 153 5.7 5.8 98
Blind Bull Sum 8650 5.7 2.5 228 3.3 3.0 110
Cottonwood Creek 7670 2.2 1.7 129* 3.4 4.0 85
East Rim Divide 7930 1.5 .8 188* 2.2 2.0 110
Grand Targhee 9260 12.8 6.1 210 7.4 6.7 110
Granite Creek 6770 2.0 .9 222* 4.1 2.9 141
Grassy Lake 7265 3.4 2.4 142* 5.1 5.3 96
Gros Ventre Summit 8750 4.2 2.2 191 3.8 2.5 152
Gunsight Pass 9820 2.3 1.9 121 3.5 2.8 125
Lewis Lake Divide 7850 4.5 2.4 188* 6.5 5.0 130
Phillips Bench 8200 4.2 2.3 183* 5.0 3.9 128
Salt River Summit 7760 1.2 .6 200* 2.3 2.5 92
Snake River Station 6920 2.0 .9 222* 4.3 3.7 116
Spring Creek Divide 9000 3.4 2.4 142* 3.9 3.6 108
Thumb Divide 7980 2.5 1.5 167* 4.0 3.2 125
Togwotee Pass 9580 7.3 3.7 197 6.6 4.1 161
Two Ocean Plateau 9240 -M 4.8 * 6.2 4.6 135
Willow Creek 8380 4.0 2.3 174* 6.2 5.5 113
Younts Peak 8350 4.9 2.2 223 4.4 3.1 142
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Basin Index (%) 187* 120
MADISON-GALLATIN
Black Bear 8170 6.9 4.5 153 5.7 5.8 98
Canyon 7870 1.8 1.4 129 2.9 2.9 100
Madison Plateau 7750 3.9 2.2 177* 4.4 4.1 107
West Yellowstone 6700 1.3 .6 217* 2.3 2.6 88
Whiskey Creek 6800 -M 1.2 * 2.8 3.4 82
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Basin Index (%) 160* 96
YELLOWSTONE
Beartooth Lake 9360 9.0 4.0 225 7.4 3.2 231
Burnt Mtn 5880 1.9 .0 * 4.2 3.9 108
Canyon 7870 1.8 1.4 129 2.9 2.9 100
Cole Creek 7850 3.7 3.2 116 2.9 3.8 76
Evening Star 9200 9.1 3.8 239 8.6 4.8 179
Fisher Creek 9100 10.8 4.4 245 8.3 5.3 157
Northeast Entrance 7350 1.5 .4 375* 3.2 2.6 123
Parker Peak 9400 8.6 3.5 246 6.0 3.6 167
Sylvan Lake 8420 6.0 2.7 222 5.6 4.4 127
Thumb Divide 7980 2.5 1.5 167* 4.0 3.2 125
Two Ocean Plateau 9240 -M 4.8 * 6.2 4.6 135
White Mill 8700 9.2 3.1 297 5.2 4.2 124
Wolverine 7650 -M .5 * -M 2.6 *
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Basin Index (%) 229 139
WIND RIVER
Burroughs Creek 8750 2.9 -M * 3.4 -M *
Castle Creek 8400 1.6 -M * 3.0 -M *
Cold Springs 9630 1.7 1.4 121 2.6 2.5 104
Deer Park 9700 2.3 2.4 96 3.0 4.0 75
Hobbs Park 10100 5.2 2.6 200 4.4 3.0 147
Kirwin 9550 5.6 2.2 255 4.2 2.7 156
Little Warm 9370 5.1 1.7 300 4.2 2.6 162
Owl Creek 8975 1.0 1.1 91 2.5 1.6 156
South Pass 9040 1.7 2.0 85 1.5 3.3 45
St. Lawrence Alt 8620 1.3 1.0 130 3.0 2.3 130
Togwotee Pass 9580 7.3 3.7 197 6.6 4.1 161
Townsend Creek 8700 1.6 1.4 114 2.8 2.9 97
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Basin Index (%) 168 120
BIGHORN BASIN
Bald Mtn. 9380 4.7 3.9 121 3.1 3.6 86
Bear Trap Meadow 8200 1.5 .8 188 2.8 2.2 127
Bone Springs Div 9350 3.0 3.4 88 2.8 3.5 80
Grave Springs 8550 1.3 1.2 108 1.8 2.7 67
Kirwin 9550 5.6 2.2 255 4.2 2.7 156
Marquette 8760 1.7 -M * 3.6 -M *
Middle Powder 7760 1.6 1.4 114 1.8 3.1 58
Owl Creek 8975 1.0 1.1 91 2.5 1.6 156
Powder River Pass 9480 4.2 1.8 233 3.9 2.8 139
Shell Creek 9580 6.4 3.6 178 3.8 3.1 123
Timber Creek 7950 1.1 .9 122 1.2 2.5 48
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Basin Index (%) 150 100
SHOSHONE RIVER
Blackwater 9780 9.7 3.8 255 6.9 4.0 172
Evening Star 9200 9.1 3.8 239 8.6 4.8 179
Marquette 8760 1.7 -M * 3.6 -M *
Sylvan Road 7120 2.4 .9 267* 4.3 3.4 126
Younts Peak 8350 4.9 2.2 223 4.4 3.1 142
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Basin Index (%) 244 158
POWDER RIVER
Bear Trap Meadow 8200 1.5 .8 188 2.8 2.2 127
Cloud Peak Reservoir 9860 2.1 2.5 84 3.3 3.5 94
Grave Springs 8550 1.3 1.2 108 1.8 2.7 67
Hansen Sawmill 8360 1.4 .9 156 2.4 2.3 104
Middle Powder 7760 1.6 1.4 114 1.8 3.1 58
Powder River Pass 9480 4.2 1.8 233 3.9 2.8 139
Soldier Park 8720 1.0 -M * 2.7 -M *
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Basin Index (%) 141 96
TONGUE RIVER
Big Goose 7990 .9 1.3 69 1.8 3.0 60
Bone Springs Div 9350 3.0 3.4 88 2.8 3.5 80
Burgess Junction 7880 1.1 1.8 61 2.1 3.0 70
Dome Lake 8880 2.3 2.4 96 2.8 3.5 80
Little Goose 8870 1.1 -M * 2.7 -M *
Sucker Creek 8880 1.2 2.1 57 .9 3.5 26
Tie Creek 6870 .7 .3 233* 1.9 3.2 59
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Basin Index (%) 81 62
BELLE FOURCHE
Cole Canyon 5910 .8 .2 400* 2.1 2.7 78
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Basin Index (%) 400* 78
CHEYENNE RIVER BASIN
Blind Park 6890 .8 1.0 80 2.7 3.3 82
North Rapid Creek 6130 .7 .8 88 1.7 2.9 59
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Basin Index (%) 83 71
UPPER N. PLATTE
Arapaho Ridge 10960 4.2 3.4 124 4.8 4.4 109
Blackhall Mtn 9820 5.0 -M * 5.4 -M *
Columbine 9160 1.9 1.6 119* 5.0 3.9 128
Divide Peak 8880 1.5 2.3 65 4.4 4.2 105
Joe Wright 10120 2.6 3.7 70 7.3 5.0 146
Laprele Creek 8375 .5 1.1 45 1.9 2.7 70
Med Bow 10500 6.4 -M * 5.6 -M *
North French Creek 10130 4.3 3.6 119 5.3 4.6 115
Never Summer 10280 4.7 2.9 162 4.9 -M *
Old Battle 10000 4.5 4.1 110 4.4 5.9 75
Rawah 9020 1.8 .9 200* 4.7 3.2 147
Sage Creek Basin 7850 .8 1.1 73* 2.3 2.9 79
Sand Lake 10050 5.2 4.0 130 4.9 4.4 111
South Brush Creek 8440 1.8 1.0 180* 3.2 3.1 103
Tower 10500 4.8 6.1 79 7.7 6.6 117
Webber Springs 9250 2.1 2.1 100* 4.3 4.5 96
Willow Creek Pass 9540 4.2 1.9 221 4.2 2.8 150
Zirkel 9340 2.3 1.7 135* 6.2 5.1 122
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Basin Index (%) 114 112
SWEETWATER
Deer Park 9700 2.3 2.4 96 3.0 4.0 75
Larsen Creek 9000 .8 .8 100* 2.0 -M *
South Pass 9040 1.7 2.0 85 1.5 3.3 45
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Basin Index (%) 92 62
LOWER N. PLATTE
Casper Mtn. 7900 .8 1.7 47 1.3 3.6 36
Laprele Creek 8375 .5 1.1 45 1.9 2.7 70
Reno Hill 8400 1.4 2.2 64 2.3 3.4 68
Windy Peak 7900 .8 .8 100 1.9 2.4 79
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Basin Index (%) 60 61
LARAMIE RIVER
Brooklyn Lake 10240 2.0 2.1 95* 3.8 3.4 112
Cinnabar Park 9574 3.7 2.4 154 5.4 3.9 138
Crow Creek 8330 .7 .6 117* 3.1 2.4 129
Deadman Hill 10220 5.3 2.6 204 5.6 3.3 170
Rawah 9020 1.8 .9 200* 4.7 3.2 147
Roach 9700 3.3 2.0 165 5.1 3.5 146
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Basin Index (%) 158 141
S. PLATTE
Black Mountain 8920 1.9 -M * 3.8 -M *
Crow Creek 8330 .7 .6 117* 3.1 2.4 129
Deadman Hill 10220 5.3 2.6 204 5.6 3.3 170
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Basin Index (%) 188* 153
LITTLE SNAKE RIVER
Battle Mountain 7440 .4 .3 133* 2.5 2.9 86
Divide Peak 8880 1.5 2.3 65 4.4 4.2 105
Elk River 8700 1.2 .6 200* 3.8 3.5 109
Little Snake River 8915 1.8 1.5 120* 10.1 5.6 180
Old Battle 10000 4.5 4.1 110 4.4 5.9 75
Sage Creek Basin 7850 .8 1.1 73* 2.3 2.9 79
Sandstone RS 8150 1.0 .8 125* 2.3 3.3 70
Whiskey Park 8950 1.8 2.2 82* 4.4 4.2 105
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Basin Index (%) 101* 105
UPPER GREEN RIVER
Big Sandy Opening 9080 2.0 2.4 83 2.6 2.5 104
Blind Bull Sum 8650 5.7 2.5 228 3.3 3.0 110
East Rim Divide 7930 1.5 .8 188* 2.2 2.0 110
Elkhart Park G.S. 9400 2.1 1.7 124 2.6 2.6 100
Gros Ventre Summit 8750 4.2 2.2 191 3.8 2.5 152
Gunsight Pass 9820 2.3 1.9 121 3.5 2.8 125
Kendall R.S. 7740 1.9 1.1 173* 2.5 2.3 109
Loomis Park 8240 2.5 1.5 167 2.8 2.7 104
New Fork Lake 8340 1.5 1.2 125 1.5 2.1 71
Pocket Creek 9360 2.8 -M * 2.8 -M *
Snider Basin 8060 .8 .8 100* 2.0 2.2 91
Spring Creek Divide 9000 3.4 2.4 142* 3.9 3.6 108
Triple Peak 8500 3.5 2.2 159 5.1 3.6 142
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Basin Index (%) 152 112
LOWER GREEN RIVER
Blacks Fork Jct 8869 .4 -M * 1.3 -M *
Buck Pasture 9632 1.1 -M * 1.7 -M *
EF Blacks Fork GS 9360 .7 -M * 1.1 -M *
Hams Fork 7840 .3 .7 43* 1.1 2.1 52
Hewinta 9500 -M .6 * 1.5 2.9 52
Hickerson Park 9122 1.3 .7 186* 1.0 2.6 38
Hole-in-Rock 9168 .8 .7 114* 1.2 2.6 46
Indian Creek 9425 2.6 3.0 87 2.4 3.4 71
Kelley R.S. 8180 1.3 1.2 108* 1.8 2.9 62
Spirit Lk 10235 1.1 -M * 1.2 -M *
Steel Creek Park 10158 2.3 2.4 96 2.0 3.3 61
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Basin Index (%) 99* 56
UPPER BEAR RIVER
Bear River RS 8777 .6 -M * 1.3 -M *
Bug Lake 7987 1.1 1.2 92* 2.4 3.2 75
Burts Miller Ranch 8000 .3 -M * .8 -M *
Chalk Creek #1 9171 .9 2.6 35 1.8 4.5 40
Hayden Fork 9130 .8 1.0 80* 1.8 3.7 49
Kelley R.S. 8180 1.3 1.2 108* 1.8 2.9 62
Lily Lake 9133 .3 1.2 25* 1.3 3.4 38
Monte Cristo 8932 2.4 1.6 150* 2.8 4.1 68
Salt River Summit 7760 1.2 .6 200* 2.3 2.5 92
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Basin Index (%) 85* 58
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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.