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 17 , 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 5.5 1.9 289 6.8 4.1 166
Black Bear 8170 10.4 6.1 170 9.1 7.2 126
Blind Bull Sum 8650 8.9 3.2 278 5.9 3.8 155
Cottonwood Creek 7670 3.2 2.5 128 4.5 4.9 92
East Rim Divide 7930 2.5 1.2 208 3.2 2.5 128
Grand Targhee 9260 15.3 7.9 194 8.8 8.6 102
Granite Creek 6770 -M 1.4 * -M 3.6 *
Grassy Lake 7265 5.8 3.8 153 7.6 6.6 115
Gros Ventre Summit 8750 6.0 2.8 214 5.3 3.1 171
Gunsight Pass 9820 4.4 2.5 176 5.0 3.3 152
Lewis Lake Divide 7850 7.8 4.0 195 8.8 6.6 133
Phillips Bench 8200 6.4 3.3 194 7.1 4.9 145
Salt River Summit 7760 1.7 1.0 170* 2.9 3.0 97
Snake River Station 6920 3.6 1.3 277* 6.0 4.5 133
Spring Creek Divide 9000 5.2 3.2 162 5.6 4.5 124
Thumb Divide 7980 5.2 1.9 274 6.3 3.8 166
Togwotee Pass 9580 9.4 4.8 196 8.7 5.2 167
Two Ocean Plateau 9240 -M 5.8 * 8.7 5.7 153
Willow Creek 8380 6.0 3.4 176 8.4 6.6 127
Younts Peak 8350 6.7 2.9 231 6.1 3.8 161
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Basin Index (%) 198 135
MADISON-GALLATIN
Black Bear 8170 10.4 6.1 170 9.1 7.2 126
Canyon 7870 3.1 1.8 172 4.2 3.5 120
Madison Plateau 7750 6.4 3.1 206 6.8 5.0 136
West Yellowstone 6700 2.5 1.0 250* -M 3.1 *
Whiskey Creek 6800 -M 1.7 * 4.4 4.0 110
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Basin Index (%) 187 124
YELLOWSTONE
Beartooth Lake 9360 10.7 4.5 238 8.9 3.9 228
Burnt Mtn 5880 2.4 .0 * 4.8 4.3 112
Canyon 7870 3.1 1.8 172 4.2 3.5 120
Cole Creek 7850 4.4 3.5 126 3.0 4.2 71
Evening Star 9200 11.6 4.7 247 10.9 5.9 185
Fisher Creek 9100 14.1 5.7 247 11.4 6.5 175
Northeast Entrance 7350 2.6 .8 325* 4.5 3.0 150
Parker Peak 9400 10.5 4.4 239 7.7 4.2 183
Sylvan Lake 8420 7.7 3.4 226 7.5 5.2 144
Thumb Divide 7980 5.2 1.9 274 6.3 3.8 166
Two Ocean Plateau 9240 -M 5.8 * 8.7 5.7 153
White Mill 8700 11.5 4.2 274 6.8 5.1 133
Wolverine 7650 3.6 1.0 360 5.2 3.0 173
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Basin Index (%) 243 154
WIND RIVER
Burroughs Creek 8750 4.5 -M * 4.6 -M *
Castle Creek 8400 2.0 -M * 3.4 -M *
Cold Springs 9630 2.4 1.8 133 2.9 2.9 100
Deer Park 9700 -M 3.2 * -M 4.6 *
Hobbs Park 10100 6.9 3.4 203 5.3 3.5 151
Kirwin 9550 7.1 2.7 263 5.4 3.1 174
Little Warm 9370 6.2 2.1 295 5.1 3.2 159
Owl Creek 8975 1.1 1.3 85 2.7 1.8 150
South Pass 9040 3.7 2.7 137 2.9 4.0 72
St. Lawrence Alt 8620 1.8 1.4 129 3.6 2.6 138
Togwotee Pass 9580 9.4 4.8 196 8.7 5.2 167
Townsend Creek 8700 2.6 1.8 144 3.5 3.3 106
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Basin Index (%) 187 135
BIGHORN BASIN
Bald Mtn. 9380 5.3 4.4 120 3.3 4.2 79
Bear Trap Meadow 8200 1.7 1.0 170 3.0 2.5 120
Bone Springs Div 9350 3.5 4.1 85 3.4 4.0 85
Grave Springs 8550 1.5 1.4 107 1.8 3.1 58
Kirwin 9550 7.1 2.7 263 5.4 3.1 174
Marquette 8760 2.1 -M * 4.0 -M *
Middle Powder 7760 1.7 1.8 94 1.9 3.6 53
Owl Creek 8975 1.1 1.3 85 2.7 1.8 150
Powder River Pass 9480 4.6 2.2 209 4.1 3.2 128
Shell Creek 9580 6.8 3.9 174 4.0 3.6 111
Timber Creek 7950 1.2 1.3 92 1.1 2.8 39
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Basin Index (%) 143 96
SHOSHONE RIVER
Blackwater 9780 12.3 4.6 267 9.3 4.8 194
Evening Star 9200 11.6 4.7 247 10.9 5.9 185
Marquette 8760 2.1 -M * 4.0 -M *
Sylvan Road 7120 3.7 1.4 264 5.9 4.1 144
Younts Peak 8350 6.7 2.9 231 6.1 3.8 161
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Basin Index (%) 252 173
POWDER RIVER
Bear Trap Meadow 8200 1.7 1.0 170 3.0 2.5 120
Cloud Peak Reservoir 9860 2.6 3.0 87 3.8 3.9 97
Grave Springs 8550 1.5 1.4 107 1.8 3.1 58
Hansen Sawmill 8360 1.9 1.0 190 2.9 2.6 112
Middle Powder 7760 1.7 1.8 94 1.9 3.6 53
Powder River Pass 9480 4.6 2.2 209 4.1 3.2 128
Soldier Park 8720 1.1 -M * 3.0 -M *
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Basin Index (%) 135 93
TONGUE RIVER
Big Goose 7990 1.2 1.6 75 1.9 3.3 58
Bone Springs Div 9350 3.5 4.1 85 3.4 4.0 85
Burgess Junction 7880 1.4 2.3 61 2.2 3.4 65
Dome Lake 8880 2.5 2.8 89 2.9 3.9 74
Little Goose 8870 1.4 -M * 3.0 -M *
Sucker Creek 8880 1.7 2.6 65 1.2 3.9 31
Tie Creek 6870 .9 .6 150 2.2 3.5 63
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Basin Index (%) 80 63
BELLE FOURCHE
Cole Canyon 5910 .7 .3 233* 2.0 2.9 69
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Basin Index (%) 233* 69
CHEYENNE RIVER BASIN
Blind Park 6890 .9 1.2 75 2.7 3.6 75
North Rapid Creek 6130 .9 .9 100 1.7 3.2 53
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Basin Index (%) 86 65
UPPER N. PLATTE
Arapaho Ridge 10960 4.2 4.4 95 4.9 5.6 88
Blackhall Mtn 9820 5.1 -M * 5.4 -M *
Columbine 9160 2.0 2.6 77 5.6 5.0 112
Divide Peak 8880 1.5 3.1 48 4.4 5.0 88
Joe Wright 10120 2.5 4.5 56 7.4 6.1 121
Laprele Creek 8375 .4 1.7 24 2.0 3.2 62
Med Bow 10500 6.4 -M * 5.7 -M *
North French Creek 10130 4.3 4.7 91 5.3 5.6 95
Never Summer 10280 4.8 4.0 120 4.9 -M *
Old Battle 10000 4.5 5.6 80 4.7 7.1 66
Rawah 9020 1.7 1.6 106 4.9 4.0 122
Sage Creek Basin 7850 .9 1.7 53 2.3 3.6 64
Sand Lake 10050 5.3 4.9 108 4.8 5.4 89
South Brush Creek 8440 1.8 1.6 112 3.1 3.7 84
Tower 10500 4.8 8.1 59 7.9 8.2 96
Webber Springs 9250 2.2 3.1 71 4.4 5.5 80
Willow Creek Pass 9540 4.0 2.5 160 4.4 3.4 129
Zirkel 9340 2.2 3.2 69 6.3 6.5 97
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Basin Index (%) 82 93
SWEETWATER
Deer Park 9700 -M 3.2 * -M 4.6 *
Larsen Creek 9000 1.6 1.3 123 2.7 -M *
South Pass 9040 3.7 2.7 137 2.9 4.0 72
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Basin Index (%) 132 72*
LOWER N. PLATTE
Casper Mtn. 7900 .8 2.6 31 1.4 4.3 33
Laprele Creek 8375 .4 1.7 24 2.0 3.2 62
Reno Hill 8400 1.4 2.5 56 2.4 4.0 60
Windy Peak 7900 .6 1.4 43 2.2 2.9 76
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Basin Index (%) 39 56
LARAMIE RIVER
Brooklyn Lake 10240 2.1 2.9 72 3.9 4.2 93
Cinnabar Park 9574 3.7 3.4 109 5.4 5.0 108
Crow Creek 8330 .6 .9 67 3.2 2.9 110
Deadman Hill 10220 5.4 3.4 159 5.7 4.1 139
Rawah 9020 1.7 1.6 106 4.9 4.0 122
Roach 9700 3.3 2.6 127 5.2 4.2 124
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Basin Index (%) 114 116
S. PLATTE
Black Mountain 8920 2.0 -M * 3.9 -M *
Crow Creek 8330 .6 .9 67 3.2 2.9 110
Deadman Hill 10220 5.4 3.4 159 5.7 4.1 139
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Basin Index (%) 140 127
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .8 0* 3.0 3.5 86
Divide Peak 8880 1.5 3.1 48 4.4 5.0 88
Elk River 8700 1.3 1.4 93* 3.9 4.2 93
Little Snake River 8915 1.9 2.8 68 5.2 6.9 75
Old Battle 10000 4.5 5.6 80 4.7 7.1 66
Sage Creek Basin 7850 .9 1.7 53 2.3 3.6 64
Sandstone RS 8150 .9 1.0 90* 2.5 3.9 64
Whiskey Park 8950 1.6 3.3 48 4.4 5.3 83
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Basin Index (%) 64 77
UPPER GREEN RIVER
Big Sandy Opening 9080 2.6 2.8 93 3.2 3.0 107
Blind Bull Sum 8650 8.9 3.2 278 5.9 3.8 155
East Rim Divide 7930 2.5 1.2 208 3.2 2.5 128
Elkhart Park G.S. 9400 2.5 2.4 104 2.8 3.1 90
Gros Ventre Summit 8750 6.0 2.8 214 5.3 3.1 171
Gunsight Pass 9820 4.4 2.5 176 5.0 3.3 152
Kendall R.S. 7740 3.4 1.5 227 4.1 2.9 141
Loomis Park 8240 3.9 2.0 195 4.3 3.4 126
New Fork Lake 8340 2.2 1.6 138 1.7 2.6 65
Pocket Creek 9360 3.1 -M * 3.0 -M *
Snider Basin 8060 2.2 1.6 138 3.0 2.8 107
Spring Creek Divide 9000 5.2 3.2 162 5.6 4.5 124
Triple Peak 8500 5.7 3.0 190 7.4 4.7 157
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Basin Index (%) 178 130
LOWER GREEN RIVER
Blacks Fork Jct 8869 .2 -M * 1.3 -M *
Buck Pasture 9632 1.0 -M * 2.0 -M *
EF Blacks Fork GS 9360 .6 -M * 1.4 -M *
Hams Fork 7840 .6 1.1 55 1.7 2.5 68
Hewinta 9500 .5 1.2 42 1.7 3.5 49
Hickerson Park 9122 .5 1.3 38 1.2 3.1 39
Hole-in-Rock 9168 .6 1.0 60 1.4 2.9 48
Indian Creek 9425 4.3 4.0 108 3.7 4.2 88
Kelley R.S. 8180 2.2 1.9 116 2.6 3.5 74
Spirit Lk 10235 1.3 -M * 2.1 -M *
Steel Creek Park 10158 1.3 2.9 45 2.2 4.0 55
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Basin Index (%) 75 61
UPPER BEAR RIVER
Bear River RS 8777 .7 -M * 1.6 -M *
Bug Lake 7987 -M 2.0 * -M 3.9 *
Burts Miller Ranch 8000 .0 -M * .9 -M *
Chalk Creek #1 9171 1.8 3.4 53 2.7 5.5 49
Hayden Fork 9130 1.2 1.8 67 2.2 4.5 49
Kelley R.S. 8180 2.2 1.9 116 2.6 3.5 74
Lily Lake 9133 .7 1.8 39 1.9 4.1 46
Monte Cristo 8932 3.5 2.6 135* 3.5 5.0 70
Salt River Summit 7760 1.7 1.0 170* 2.9 3.0 97
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Basin Index (%) 89* 62
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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.