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 MONDAY: NOVEMBER 6 , 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 3.7 .5 740* 4.8 2.5 192
Black Bear 8170 5.9 3.7 159* 4.8 4.8 100
Blind Bull Sum 8650 5.2 2.0 260* 2.9 2.5 116
Cottonwood Creek 7670 2.0 1.3 154* 2.5 3.4 74
East Rim Divide 7930 1.4 .6 233* 2.1 1.7 124
Grand Targhee 9260 12.4 5.5 225 6.7 6.1 110
Granite Creek 6770 1.7 .6 283* 3.7 2.4 154
Grassy Lake 7265 3.0 1.7 176* 4.3 4.3 100
Gros Ventre Summit 8750 3.8 1.9 200 3.2 2.2 145
Gunsight Pass 9820 2.0 1.4 143 3.2 2.5 128
Lewis Lake Divide 7850 3.9 1.7 229* 5.2 4.1 127
Phillips Bench 8200 4.0 1.8 222* 4.7 3.1 152
Salt River Summit 7760 1.2 .4 300* 2.0 2.1 95
Snake River Station 6920 1.7 .5 340* 3.7 3.1 119
Spring Creek Divide 9000 3.2 1.7 188* 3.6 2.9 124
Thumb Divide 7980 2.0 1.0 200* 3.5 2.7 130
Togwotee Pass 9580 7.2 3.2 225 6.2 3.5 177
Two Ocean Plateau 9240 -M 4.1 * 5.6 3.9 144
Willow Creek 8380 3.5 1.7 206* 5.6 4.6 122
Younts Peak 8350 4.5 1.8 250 4.0 2.6 154
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Basin Index (%) 219* 127
MADISON-GALLATIN
Black Bear 8170 5.9 3.7 159* 4.8 4.8 100
Canyon 7870 1.7 1.0 170* 2.6 2.3 113
Madison Plateau 7750 3.5 1.8 194* 4.0 3.5 114
West Yellowstone 6700 1.2 .3 400* 2.3 2.2 105
Whiskey Creek 6800 .1 .9 11* 2.4 2.8 86
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Basin Index (%) 161* 103
YELLOWSTONE
Beartooth Lake 9360 8.6 3.4 253 6.8 2.8 243
Burnt Mtn 5880 1.9 .0 * 3.8 3.6 106
Canyon 7870 1.7 1.0 170* 2.6 2.3 113
Cole Creek 7850 3.9 3.0 130 2.7 3.4 79
Evening Star 9200 8.4 3.1 271 7.5 4.0 188
Fisher Creek 9100 10.5 3.5 300 7.8 4.4 177
Northeast Entrance 7350 1.5 .2 750* 3.0 2.1 143
Parker Peak 9400 8.0 3.1 258 5.2 3.1 168
Sylvan Lake 8420 5.6 2.2 255 5.0 3.6 139
Thumb Divide 7980 2.0 1.0 200* 3.5 2.7 130
Two Ocean Plateau 9240 -M 4.1 * 5.6 3.9 144
White Mill 8700 9.1 2.7 337 4.7 3.5 134
Wolverine 7650 -M .3 * -M 2.2 *
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Basin Index (%) 264 148
WIND RIVER
Burroughs Creek 8750 2.8 -M * 2.8 -M *
Castle Creek 8400 1.5 -M * 2.8 -M *
Cold Springs 9630 1.5 1.2 125 2.1 2.2 95
Deer Park 9700 2.2 1.9 116 2.4 3.5 69
Hobbs Park 10100 5.0 2.3 217 3.8 2.6 146
Kirwin 9550 5.2 2.0 260 3.7 2.4 154
Little Warm 9370 4.6 1.5 307 3.6 2.3 157
Owl Creek 8975 .8 1.0 80 2.3 1.4 164
South Pass 9040 1.5 1.6 94 1.1 2.8 39
St. Lawrence Alt 8620 1.1 1.0 110 2.9 2.1 138
Togwotee Pass 9580 7.2 3.2 225 6.2 3.5 177
Townsend Creek 8700 1.5 1.2 125 2.3 2.6 88
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Basin Index (%) 181 120
BIGHORN BASIN
Bald Mtn. 9380 4.5 3.6 125 2.6 3.2 81
Bear Trap Meadow 8200 1.3 .7 186 2.7 2.0 135
Bone Springs Div 9350 2.9 3.1 94 2.5 3.1 81
Grave Springs 8550 1.3 1.0 130 1.5 2.6 58
Kirwin 9550 5.2 2.0 260 3.7 2.4 154
Marquette 8760 1.5 -M * 3.3 -M *
Middle Powder 7760 1.6 1.3 123 1.4 2.8 50
Owl Creek 8975 .8 1.0 80 2.3 1.4 164
Powder River Pass 9480 4.2 1.6 262 3.5 2.5 140
Shell Creek 9580 6.2 3.3 188 3.4 2.8 121
Timber Creek 7950 .8 .8 100 1.2 2.4 50
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Basin Index (%) 157 98
SHOSHONE RIVER
Blackwater 9780 9.0 3.3 273 6.2 3.4 182
Evening Star 9200 8.4 3.1 271 7.5 4.0 188
Marquette 8760 1.5 -M * 3.3 -M *
Sylvan Road 7120 2.1 .5 420* 3.8 2.8 136
Younts Peak 8350 4.5 1.8 250 4.0 2.6 154
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Basin Index (%) 276 168
POWDER RIVER
Bear Trap Meadow 8200 1.3 .7 186 2.7 2.0 135
Cloud Peak Reservoir 9860 1.9 2.2 86 3.0 3.2 94
Grave Springs 8550 1.3 1.0 130 1.5 2.6 58
Hansen Sawmill 8360 1.3 .8 162 2.3 2.1 110
Middle Powder 7760 1.6 1.3 123 1.4 2.8 50
Powder River Pass 9480 4.2 1.6 262 3.5 2.5 140
Soldier Park 8720 .8 -M * 2.5 -M *
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Basin Index (%) 153 95
TONGUE RIVER
Big Goose 7990 .7 1.2 58 1.6 2.8 57
Bone Springs Div 9350 2.9 3.1 94 2.5 3.1 81
Burgess Junction 7880 1.0 1.6 62 1.5 2.8 54
Dome Lake 8880 2.2 2.3 96 2.5 3.1 81
Little Goose 8870 .9 -M * 2.5 -M *
Sucker Creek 8880 1.1 1.8 61 -M 3.1 *
Tie Creek 6870 .4 .3 133* 1.3 3.0 43
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Basin Index (%) 81 64
BELLE FOURCHE
Cole Canyon 5910 .7 .0 * 1.8 2.4 75
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Basin Index (%) * 75
CHEYENNE RIVER BASIN
Blind Park 6890 .7 .8 88 2.5 3.0 83
North Rapid Creek 6130 .4 .5 80* 1.5 2.6 58
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Basin Index (%) 85 71
UPPER N. PLATTE
Arapaho Ridge 10960 4.0 3.2 125 4.6 4.0 115
Blackhall Mtn 9820 4.7 -M * 5.1 -M *
Columbine 9160 1.9 1.1 173* 4.9 3.3 148
Divide Peak 8880 1.2 2.0 60* 4.1 3.8 108
Joe Wright 10120 2.3 3.3 70 6.8 4.3 158
Laprele Creek 8375 .2 .8 25* 1.6 2.5 64
Med Bow 10500 5.7 -M * 5.0 -M *
North French Creek 10130 3.7 3.1 119* 4.6 4.1 112
Never Summer 10280 4.5 2.7 167 4.5 -M *
Old Battle 10000 4.2 3.2 131* 4.2 5.1 82
Rawah 9020 1.5 .8 188* 4.3 2.9 148
Sage Creek Basin 7850 .5 .9 56* 1.9 2.8 68
Sand Lake 10050 4.6 3.3 139 3.8 3.8 100
South Brush Creek 8440 1.5 .8 188* 2.7 2.9 93
Tower 10500 4.0 5.0 80* 6.7 5.6 120
Webber Springs 9250 1.9 1.6 119* 4.1 3.9 105
Willow Creek Pass 9540 3.7 1.6 231 3.9 2.5 156
Zirkel 9340 2.1 1.7 124* 5.8 4.7 123
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Basin Index (%) 119* 114
SWEETWATER
Deer Park 9700 2.2 1.9 116 2.4 3.5 69
Larsen Creek 9000 .5 .4 125* 1.8 -M *
South Pass 9040 1.5 1.6 94 1.1 2.8 39
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Basin Index (%) 108 56
LOWER N. PLATTE
Casper Mtn. 7900 .7 1.5 47 1.1 3.4 32
Laprele Creek 8375 .2 .8 25* 1.6 2.5 64
Reno Hill 8400 1.2 1.8 67 2.1 3.2 66
Windy Peak 7900 .4 .6 67* 1.5 2.2 68
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Basin Index (%) 53 56
LARAMIE RIVER
Brooklyn Lake 10240 1.8 1.7 106* 3.2 2.9 110
Cinnabar Park 9574 3.3 1.9 174* 4.9 3.6 136
Crow Creek 8330 .5 .8 62 2.8 2.3 122
Deadman Hill 10220 4.7 2.4 196 5.0 3.0 167
Rawah 9020 1.5 .8 188* 4.3 2.9 148
Roach 9700 2.9 1.7 171* 4.7 3.0 157
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Basin Index (%) 158* 141
S. PLATTE
Black Mountain 8920 1.6 -M * 3.5 -M *
Crow Creek 8330 .5 .8 62 2.8 2.3 122
Deadman Hill 10220 4.7 2.4 196 5.0 3.0 167
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Basin Index (%) 162 147
LITTLE SNAKE RIVER
Battle Mountain 7440 .4 .0 * 2.0 2.6 77
Divide Peak 8880 1.2 2.0 60* 4.1 3.8 108
Elk River 8700 1.2 .4 300* 3.3 3.1 106
Little Snake River 8915 1.8 1.2 150* 9.6 5.3 181
Old Battle 10000 4.2 3.2 131* 4.2 5.1 82
Sage Creek Basin 7850 .5 .9 56* 1.9 2.8 68
Sandstone RS 8150 1.1 .4 275* 1.8 2.9 62
Whiskey Park 8950 1.7 1.6 106* 4.2 3.7 114
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Basin Index (%) 125* 106
UPPER GREEN RIVER
Big Sandy Opening 9080 1.8 1.9 95 2.5 2.1 119
Blind Bull Sum 8650 5.2 2.0 260* 2.9 2.5 116
East Rim Divide 7930 1.4 .6 233* 2.1 1.7 124
Elkhart Park G.S. 9400 1.9 1.3 146 2.2 2.2 100
Gros Ventre Summit 8750 3.8 1.9 200 3.2 2.2 145
Gunsight Pass 9820 2.0 1.4 143 3.2 2.5 128
Kendall R.S. 7740 1.7 .7 243* 2.3 2.0 115
Loomis Park 8240 2.4 1.0 240* 2.6 2.2 118
New Fork Lake 8340 1.4 .9 156* .8 1.8 44
Pocket Creek 9360 2.7 -M * 2.5 -M *
Snider Basin 8060 .8 .4 200* 1.7 1.8 94
Spring Creek Divide 9000 3.2 1.7 188* 3.6 2.9 124
Triple Peak 8500 3.1 1.8 172* 4.6 3.0 153
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Basin Index (%) 184* 118
LOWER GREEN RIVER
Blacks Fork Jct 8869 .3 -M * 1.1 -M *
Buck Pasture 9632 .7 -M * 1.4 -M *
EF Blacks Fork GS 9360 .3 -M * 1.0 -M *
Hams Fork 7840 .3 .4 75* 1.1 1.8 61
Hewinta 9500 .2 .4 50* 1.3 2.6 50
Hickerson Park 9122 .8 .6 133* .8 2.4 33
Hole-in-Rock 9168 .6 .5 120* .9 2.4 38
Indian Creek 9425 2.4 2.6 92 2.2 2.9 76
Kelley R.S. 8180 1.2 .9 133* 1.6 2.4 67
Spirit Lk 10235 .8 -M * 1.1 -M *
Steel Creek Park 10158 1.8 1.9 95 1.5 2.9 52
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Basin Index (%) 100* 54
UPPER BEAR RIVER
Bear River RS 8777 .2 -M * 1.0 -M *
Bug Lake 7987 1.4 .9 156* 2.2 2.7 81
Burts Miller Ranch 8000 .2 -M * .7 -M *
Chalk Creek #1 9171 .8 2.1 38* 1.7 3.8 45
Hayden Fork 9130 .6 .6 100* 1.4 3.2 44
Kelley R.S. 8180 1.2 .9 133* 1.6 2.4 67
Lily Lake 9133 .1 .9 11* 1.0 3.0 33
Monte Cristo 8932 2.3 1.1 209* 2.2 3.5 63
Salt River Summit 7760 1.2 .4 300* 2.0 2.1 95
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Basin Index (%) 110* 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.