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 2 , 2014
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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 .0 .0 * .1 .0 *
Black Bear 8170 .0 .0 * .0 .2 0
Blind Bull Sum 8650 .0 .0 * .0 .1 0
Cottonwood Creek 7670 .3 .0 * .1 .1 100
East Rim Divide 7930 .0 .0 * .1 .1 100
Grand Targhee 9260 1.5 .7 214* .6 .1 600
Granite Creek 6770 .0 .0 * .1 .1 100
Grassy Lake 7265 .3 .0 * .0 .2 0
Gros Ventre Summit 8750 .1 .0 * .1 .0 *
Gunsight Pass 9820 .0 .0 * .1 .0 *
Lewis Lake Divide 7850 .0 .0 * .1 .1 100
Phillips Bench 8200 .0 .0 * .1 .1 100
Salt River Summit 7760 .0 .0 * .3 .0 *
Snake River Station 6920 .0 .0 * .1 .1 100
Spring Creek Divide 9000 .3 .0 * .0 .1 0
Thumb Divide 7980 .0 .0 * .2 .1 200
Togwotee Pass 9580 .2 .0 * .2 .1 200
Two Ocean Plateau 9240 .7 .0 * .2 .1 200
Willow Creek 8380 .1 .0 * .2 .1 200
Younts Peak 8350 -M .0 * -M .1 *
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Basin Index (%) 500* 153
MADISON-GALLATIN
Black Bear 8170 .0 .0 * .0 .2 0
Canyon 7870 .0 .0 * .1 .1 100
Madison Plateau 7750 .0 .0 * .0 .1 0
West Yellowstone 6700 .0 .0 * .0 .1 0
Whiskey Creek 6800 .0 .0 * .1 .1 100
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Basin Index (%) * 33
YELLOWSTONE
Beartooth Lake 9360 .0 .0 * .0 .1 0
Burnt Mtn 5880 .0 .0 * .0 .1 0
Canyon 7870 .0 .0 * .1 .1 100
Cole Creek 7850 .0 .0 * .0 .2 0
Evening Star 9200 .1 .0 * .1 .2 50
Fisher Creek 9100 .0 .0 * .0 .1 0
Northeast Entrance 7350 .0 .0 * .0 .1 0
Parker Peak 9400 .2 .0 * .2 .2 100
Sylvan Lake 8420 .0 .0 * .1 .1 100
Thumb Divide 7980 .0 .0 * .2 .1 200
Two Ocean Plateau 9240 .7 .0 * .2 .1 200
White Mill 8700 .0 .0 * .0 .1 0
Wolverine 7650 .0 .0 * .0 .1 0
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Basin Index (%) * 56
WIND RIVER
Burroughs Creek 8750 .0 .0 * .0 .1 0
Castle Creek 8400 .0 -M * .0 -M *
Cold Springs 9630 .0 .0 * .1 .1 100
Deer Park 9700 .4 .0 * .3 .0 *
Hobbs Park 10100 .3 .0 * .4 .1 400
Kirwin 9550 .4 .0 * .3 .1 300
Little Warm 9370 .0 .0 * .1 .0 *
Owl Creek 8975 .3 .0 * .4 .1 400
South Pass 9040 .3 .0 * .2 .0 *
St. Lawrence Alt 8620 .1 .0 * .2 .1 200
Togwotee Pass 9580 .2 .0 * .2 .1 200
Townsend Creek 8700 .0 .0 * .1 .1 100
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Basin Index (%) * 288
BIGHORN BASIN
Bald Mtn. 9380 .0 .0 * .0 .1 0
Bear Trap Meadow 8200 .0 .0 * .2 .1 200
Bone Springs Div 9350 .0 .0 * .1 .1 100
Grave Springs 8550 .0 .0 * .2 .1 200
Kirwin 9550 .4 .0 * .3 .1 300
Marquette 8760 .0 -M * .1 -M *
Middle Powder 7760 .4 .0 * .1 .1 100
Owl Creek 8975 .3 .0 * .4 .1 400
Powder River Pass 9480 .4 .0 * .5 .1 500
Shell Creek 9580 .3 .0 * .1 .1 100
Timber Creek 7950 .5 .0 * .5 .1 500
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Basin Index (%) * 240
SHOSHONE RIVER
Blackwater 9780 .2 .0 * .2 .2 100
Evening Star 9200 .1 .0 * .1 .2 50
Marquette 8760 .0 -M * .1 -M *
Sylvan Road 7120 .0 .0 * .1 .1 100
Younts Peak 8350 -M .0 * -M .1 *
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Basin Index (%) * 80
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * .2 .1 200
Cloud Peak Reservoir 9860 .1 .0 * .2 .1 200
Grave Springs 8550 .0 .0 * .2 .1 200
Hansen Sawmill 8360 .3 .0 * .6 .1 600
Middle Powder 7760 .4 .0 * .1 .1 100
Powder River Pass 9480 .4 .0 * .5 .1 500
Soldier Park 8720 .2 -M * .3 -M *
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Basin Index (%) * 300
TONGUE RIVER
Big Goose 7990 .0 .0 * .1 .0 *
Bone Springs Div 9350 .0 .0 * .1 .1 100
Burgess Junction 7880 .0 .0 * .0 .0 *
Dome Lake 8880 .0 .0 * .2 .2 100
Little Goose 8870 .1 -M * .4 -M *
Sucker Creek 8880 .1 .0 * .2 .1 200
Tie Creek 6870 .0 .0 * .1 .1 100
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Basin Index (%) * 140
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .0 .0 *
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Basin Index (%) * *
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * .0 .1 0
North Rapid Creek 6130 .0 .0 * .0 .1 0
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Basin Index (%) * 0
UPPER N. PLATTE
Arapaho Ridge 10960 .9 .1 900* .5 .2 250
Blackhall Mtn 9820 .0 -M * .3 -M *
Columbine 9160 .2 .0 * .2 .1 200
Divide Peak 8880 .0 .0 * .2 .1 200
Joe Wright 10120 .3 .0 * .3 .1 300
Laprele Creek 8375 .0 .0 * -M .1 *
Med Bow 10500 .8 -M * .3 -M *
North French Creek 10130 .4 .0 * .2 .1 200
Never Summer 10280 1.3 .0 * .5 -M *
Old Battle 10000 .7 .0 * .1 .1 100
Rawah 9020 .4 .0 * .5 .2 250
Sage Creek Basin 7850 .3 .0 * .2 .1 200
Sand Lake 10050 .2 .0 * .1 .1 100
South Brush Creek 8440 .0 .0 * .1 .1 100
Tower 10500 1.8 .0 * .4 .1 400
Webber Springs 9250 .0 .0 * .1 .1 100
Willow Creek Pass 9540 .4 .0 * .5 .0 *
Zirkel 9340 .4 .0 * .3 .1 300
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Basin Index (%) 7300* 247
SWEETWATER
Deer Park 9700 .4 .0 * .3 .0 *
Larsen Creek 9000 .0 .0 * .0 -M *
South Pass 9040 .3 .0 * .2 .0 *
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Basin Index (%) * *
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .1 .0 *
Laprele Creek 8375 .0 .0 * -M .1 *
Reno Hill 8400 -M .0 * .1 .1 100
Windy Peak 7900 .0 .0 * .0 .1 0
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Basin Index (%) * 100
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * .1 .1 100
Cinnabar Park 9574 .0 .0 * .2 .2 100
Crow Creek 8330 .0 .0 * .2 .0 *
Deadman Hill 10220 .3 .0 * .3 .0 *
Rawah 9020 .4 .0 * .5 .2 250
Roach 9700 .3 .0 * .3 .1 300
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Basin Index (%) * 267
S. PLATTE
Black Mountain 8920 .1 -M * .3 -M *
Crow Creek 8330 .0 .0 * .2 .0 *
Deadman Hill 10220 .3 .0 * .3 .0 *
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Basin Index (%) * *
LITTLE SNAKE RIVER
Battle Mountain 7440 .2 .0 * .1 .1 100
Divide Peak 8880 .0 .0 * .2 .1 200
Elk River 8700 .1 .0 * .3 .1 300
Little Snake River 8915 .2 .0 * .3 .2 150
Old Battle 10000 .7 .0 * .1 .1 100
Sage Creek Basin 7850 .3 .0 * .2 .1 200
Sandstone RS 8150 .1 .0 * .2 .1 200
Whiskey Park 8950 .3 .0 * .0 .1 0
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Basin Index (%) * 156
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * .0 .1 0
Blind Bull Sum 8650 .0 .0 * .0 .1 0
East Rim Divide 7930 .0 .0 * .1 .1 100
Elkhart Park G.S. 9400 .1 .0 * .1 .1 100
Gros Ventre Summit 8750 .1 .0 * .1 .0 *
Gunsight Pass 9820 .0 .0 * .1 .0 *
Kendall R.S. 7740 .1 .0 * .0 .0 *
Loomis Park 8240 .0 .0 * .0 .1 0
New Fork Lake 8340 .0 .0 * .0 .1 0
Pocket Creek 9360 -M -M * .1 -M *
Snider Basin 8060 .0 .0 * .2 .1 200
Spring Creek Divide 9000 .3 .0 * .0 .1 0
Triple Peak 8500 .0 .0 * .1 .1 100
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Basin Index (%) * 78
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .1 -M *
Buck Pasture 9700 .0 -M * .0 -M *
EF Blacks Fork GS 9360 .0 -M * .2 -M *
Hams Fork 7840 .0 .0 * .0 .0 *
Hewinta 9519 -M .0 * -M .0 *
Hickerson Park 9145 .3 .0 * .1 .1 100
Hole-in-Rock 9150 .0 .0 * .0 .1 0
Indian Creek 9425 .4 .0 * .1 .1 100
Kelley R.S. 8180 .4 .0 * .0 .1 0
Spirit Lk 10235 .0 -M * .0 -M *
Steel Creek Park 10200 -M .0 * .1 .1 100
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Basin Index (%) * 60
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .2 -M *
Bug Lake 7950 .3 .0 * .0 .1 0
Burts Miller Ranch 8000 .1 -M * .0 -M *
Chalk Creek #1 8993 .1 .0 * -M .1 *
Hayden Fork 9212 .2 .0 * .1 .1 100
Kelley R.S. 8180 .4 .0 * .0 .1 0
Lily Lake 9156 .0 .0 * .2 .1 200
Monte Cristo 8960 .3 .0 * .0 .1 0
Salt River Summit 7760 .0 .0 * .3 .0 *
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Basin Index (%) * 120
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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.
