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: OCTOBER 8 , 2015
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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 .1 .0 * 1.2 .5 240
Black Bear 8170 .0 .1 0* .5 1.0 50
Blind Bull Sum 8650 .1 .0 * .7 .5 140
Cottonwood Creek 7670 .0 .0 * .2 .7 29
East Rim Divide 7930 .0 .0 * .7 .4 175
Grand Targhee 9260 .0 1.1 0* 1.1 1.7 65
Granite Creek 6770 -M .0 * -M .4 *
Grassy Lake 7265 .0 .0 * 1.0 .9 111
Gros Ventre Summit 8750 .0 .0 * .7 .4 175
Gunsight Pass 9820 .1 .0 * 1.0 .7 143
Lewis Lake Divide 7850 .0 .0 * .8 .8 100
Phillips Bench 8200 .0 .0 * 1.6 .5 320
Salt River Summit 7760 -M .0 * -M .4 *
Snake River Station 6920 .0 .0 * .8 .7 114
Spring Creek Divide 9000 .1 .0 * .4 .5 80
Thumb Divide 7980 .0 .0 * .8 .7 114
Togwotee Pass 9580 .0 .1 0* 1.5 .6 250
Two Ocean Plateau 9240 .2 .4 50* 1.6 .8 200
Willow Creek 8380 .0 .0 * .5 .9 56
Younts Peak 8350 .0 .1 0* 1.0 .6 167
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Basin Index (%) 33* 125
MADISON-GALLATIN
Black Bear 8170 .0 .1 0* .5 1.0 50
Canyon 7870 .0 .0 * .6 .5 120
Madison Plateau 7750 .0 .0 * .5 .7 71
West Yellowstone 6700 .0 .0 * .3 .5 60
Whiskey Creek 6800 .0 .0 * .3 .6 50
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Basin Index (%) 0* 67
YELLOWSTONE
Beartooth Lake 9360 .0 .6 0* .9 .5 180
Burnt Mtn 5880 .0 .0 * 1.9 1.3 146
Canyon 7870 .0 .0 * .6 .5 120
Cole Creek 7850 .0 .7 0* 1.8 1.0 180
Evening Star 9200 .0 .2 0* 1.3 .8 162
Fisher Creek 9100 .0 .0 * 1.0 .8 125
Northeast Entrance 7350 .0 .0 * .7 .5 140
Parker Peak 9400 .0 .5 0* 1.2 .8 150
Sylvan Lake 8420 .0 .0 * 1.3 .8 162
Thumb Divide 7980 .0 .0 * .8 .7 114
Two Ocean Plateau 9240 .2 .4 50* 1.6 .8 200
White Mill 8700 .0 .0 * .6 .7 86
Wolverine 7650 .0 .0 * 1.3 .5 260
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Basin Index (%) 8* 155
WIND RIVER
Burroughs Creek 8750 .0 -M * 2.0 -M *
Castle Creek 8400 .0 -M * .8 -M *
Cold Springs 9630 .0 .0 * 1.2 .6 200
Deer Park 9700 .0 .0 * .5 .8 62
Hobbs Park 10100 .0 .0 * .8 .6 133
Kirwin 9550 .0 .1 0* 1.1 .6 183
Little Warm 9370 .0 .0 * 1.4 .5 280
Owl Creek 8975 .0 .0 * .5 .4 125
South Pass 9040 .0 .0 * .4 .6 67
St. Lawrence Alt 8620 .0 .0 * .7 .5 140
Togwotee Pass 9580 .0 .1 0* 1.5 .6 250
Townsend Creek 8700 .0 .0 * .7 .6 117
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Basin Index (%) 0* 152
BIGHORN BASIN
Bald Mtn. 9380 .0 .8 0* .7 .7 100
Bear Trap Meadow 8200 .0 .0 * .9 .4 225
Bone Springs Div 9350 .0 .7 0* .4 .8 50
Grave Springs 8550 .0 .0 * .3 .8 38
Kirwin 9550 .0 .1 0* 1.1 .6 183
Marquette 8760 .0 -M * 1.8 -M *
Middle Powder 7760 .0 .0 * .7 .7 100
Owl Creek 8975 .0 .0 * .5 .4 125
Powder River Pass 9480 .0 .0 * 1.3 .6 217
Shell Creek 9580 .0 .9 0* .9 .7 129
Timber Creek 7950 .0 .0 * 2.3 .7 329
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Basin Index (%) 0* 142
SHOSHONE RIVER
Blackwater 9780 .0 .6 0* 1.6 .8 200
Evening Star 9200 .0 .2 0* 1.3 .8 162
Marquette 8760 .0 -M * 1.8 -M *
Sylvan Road 7120 .0 .0 * 1.0 .7 143
Younts Peak 8350 .0 .1 0* 1.0 .6 167
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Basin Index (%) 0* 169
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * .9 .4 225
Cloud Peak Reservoir 9860 .0 .0 * .5 .7 71
Grave Springs 8550 .0 .0 * .3 .8 38
Hansen Sawmill 8360 .0 .0 * .3 .5 60
Middle Powder 7760 .0 .0 * .7 .7 100
Powder River Pass 9480 .0 .0 * 1.3 .6 217
Soldier Park 8720 .0 -M * .4 -M *
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Basin Index (%) * 108
TONGUE RIVER
Big Goose 7990 .0 .0 * .3 .8 38
Bone Springs Div 9350 .0 .7 0* .4 .8 50
Burgess Junction 7880 .0 .1 0* 1.3 .7 186
Dome Lake 8880 .0 .2 0* .4 .8 50
Little Goose 8870 .0 -M * .3 -M *
Sucker Creek 8880 .0 .1 0* .8 .7 114
Tie Creek 6870 .0 .0 * .2 .9 22
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Basin Index (%) 0* 72
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .6 .6 100
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Basin Index (%) * 100
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * .4 .8 50
North Rapid Creek 6130 .0 .0 * .6 .6 100
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Basin Index (%) * 71
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .1 0* .2 .6 33
Blackhall Mtn 9820 .2 -M * .1 -M *
Columbine 9160 .1 .0 * -M .7 *
Divide Peak 8880 .1 .0 * .1 .9 11
Joe Wright 10120 .0 .0 * .9 .8 112
Laprele Creek 8375 .0 .0 * .0 .5 0
Med Bow 10500 .1 -M * .2 -M *
North French Creek 10130 .0 .1 0* .1 .8 12
Never Summer 10280 .0 .0 * .6 -M *
Old Battle 10000 .1 .0 * -M 1.1 *
Rawah 9020 .1 .0 * .8 .6 133
Sage Creek Basin 7850 .2 .0 * .1 .7 14
Sand Lake 10050 .2 .0 * .6 .8 75
South Brush Creek 8440 .1 .0 * -M .6 *
Tower 10500 .0 .0 * .1 1.1 9
Webber Springs 9250 .0 .0 * .0 .8 0
Willow Creek Pass 9540 .1 .0 * .5 .4 125
Zirkel 9340 .0 .0 * .3 1.1 27
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Basin Index (%) 500* 41
SWEETWATER
Deer Park 9700 .0 .0 * .5 .8 62
Larsen Creek 9000 .1 .0 * .6 -M *
South Pass 9040 .0 .0 * .4 .6 67
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Basin Index (%) * 64
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .0 .6 0
Laprele Creek 8375 .0 .0 * .0 .5 0
Reno Hill 8400 .0 .0 * 1.0 .6 167
Windy Peak 7900 .1 .0 * .2 .4 50
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Basin Index (%) * 57
LARAMIE RIVER
Brooklyn Lake 10240 .2 .0 * .5 .5 100
Cinnabar Park 9574 .0 .0 * 1.0 .6 167
Crow Creek 8330 -M .0 * .6 .3 200
Deadman Hill 10220 .0 .0 * .8 .5 160
Rawah 9020 .1 .0 * .8 .6 133
Roach 9700 .1 .0 * .6 .5 120
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Basin Index (%) * 143
S. PLATTE
Black Mountain 8920 .0 -M * 1.2 -M *
Crow Creek 8330 -M .0 * .6 .3 200
Deadman Hill 10220 .0 .0 * .8 .5 160
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Basin Index (%) * 175
LITTLE SNAKE RIVER
Battle Mountain 7440 .1 .0 * .0 .6 0
Divide Peak 8880 .1 .0 * .1 .9 11
Elk River 8700 .1 .0 * .1 .7 14
Little Snake River 8915 .0 .0 * .0 1.0 0
Old Battle 10000 .1 .0 * -M 1.1 *
Sage Creek Basin 7850 .2 .0 * .1 .7 14
Sandstone RS 8150 .4 .0 * -M .7 *
Whiskey Park 8950 .0 .0 * -M .8 *
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Basin Index (%) * 8
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * .6 .4 150
Blind Bull Sum 8650 .1 .0 * .7 .5 140
East Rim Divide 7930 .0 .0 * .7 .4 175
Elkhart Park G.S. 9400 .2 .0 * 1.4 .5 280
Gros Ventre Summit 8750 .0 .0 * .7 .4 175
Gunsight Pass 9820 .1 .0 * 1.0 .7 143
Kendall R.S. 7740 .1 .0 * .7 .4 175
Loomis Park 8240 .1 .0 * .9 .4 225
New Fork Lake 8340 .1 .0 * .6 .4 150
Pocket Creek 9360 .0 -M * 1.1 -M *
Snider Basin 8060 .1 .0 * .2 .2 100
Spring Creek Divide 9000 .1 .0 * .4 .5 80
Triple Peak 8500 .0 .0 * .5 .5 100
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Basin Index (%) * 158
LOWER GREEN RIVER
Blacks Fork Jct 8870 1.0 -M * .7 -M *
Buck Pasture 9700 .0 -M * .5 -M *
EF Blacks Fork GS 9360 .0 -M * .7 -M *
Hams Fork 7840 .2 .0 * .1 .3 33
Hewinta 9519 .0 .0 * .6 .6 100
Hickerson Park 9145 .1 .0 * .4 .5 80
Hole-in-Rock 9150 .0 .0 * .5 .5 100
Indian Creek 9425 .1 .0 * .2 .5 40
Kelley R.S. 8180 .3 .0 * .5 .4 125
Spirit Lk 10235 .0 -M * .5 -M *
Steel Creek Park 10200 .0 .0 * 1.0 .6 167
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Basin Index (%) * 97
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .3 -M *
Bug Lake 7950 .4 .0 * .5 .6 83
Burts Miller Ranch 8000 .0 -M * .1 -M *
Chalk Creek #1 8993 .1 .0 * .6 .8 75
Hayden Fork 9212 .0 .0 * .4 .7 57
Kelley R.S. 8180 .3 .0 * .5 .4 125
Lily Lake 9156 .0 .0 * .3 .6 50
Monte Cristo 8960 .1 .0 * 1.2 .7 171
Salt River Summit 7760 -M .0 * -M .4 *
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Basin Index (%) * 92
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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.
