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: OCTOBER 3 , 2016
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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 * .9 .1 900
Black Bear 8170 .2 .0 * 1.2 .3 400
Blind Bull Sum 8650 .2 .0 * .4 .2 200
Cottonwood Creek 7670 .1 .0 * .8 .2 400
East Rim Divide 7930 .0 .0 * .5 .1 500
Grand Targhee 9260 .5 .8 62* 1.4 .2 700
Granite Creek 6770 .0 .0 * .7 .1 700
Grassy Lake 7265 .2 .0 * .9 .4 225
Gros Ventre Summit 8750 .3 .0 * 1.1 .1 1100
Gunsight Pass 9820 .0 .0 * .6 .1 600
Lewis Lake Divide 7850 .1 .0 * .6 .3 200
Phillips Bench 8200 .0 .0 * .6 .2 300
Salt River Summit 7760 .1 .0 * .7 .1 700
Snake River Station 6920 .3 .0 * .9 .2 450
Spring Creek Divide 9000 .1 .0 * .7 .2 350
Thumb Divide 7980 .8 .0 * .7 .2 350
Togwotee Pass 9580 .3 .0 * .5 .1 500
Two Ocean Plateau 9240 -M .0 * -M .2 *
Willow Creek 8380 .0 .0 * .6 .2 300
Younts Peak 8350 -M .0 * -M .2 *
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Basin Index (%) 412* 418
MADISON-GALLATIN
Black Bear 8170 .2 .0 * 1.2 .3 400
Canyon 7870 .2 .0 * .4 .2 200
Madison Plateau 7750 .0 .0 * 1.2 .2 600
West Yellowstone 6700 .1 .0 * -M .2 *
Whiskey Creek 6800 .1 .0 * 1.1 .2 550
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Basin Index (%) * 433
YELLOWSTONE
Beartooth Lake 9360 .1 .1 100* .1 .2 50
Burnt Mtn 5880 .1 .0 * .1 .2 50
Canyon 7870 .2 .0 * .4 .2 200
Cole Creek 7850 .1 .0 * .0 .3 0
Evening Star 9200 .1 .0 * .5 .3 167
Fisher Creek 9100 .1 .0 * -M .2 *
Northeast Entrance 7350 .2 .0 * .9 .2 450
Parker Peak 9400 .2 .1 200* .6 .3 200
Sylvan Lake 8420 .3 .0 * .8 .3 267
Thumb Divide 7980 .8 .0 * .7 .2 350
Two Ocean Plateau 9240 -M .0 * -M .2 *
White Mill 8700 .1 .0 * .5 .2 250
Wolverine 7650 .0 .0 * .6 .2 300
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Basin Index (%) 1150* 200
WIND RIVER
Burroughs Creek 8750 .1 -M * -M -M *
Castle Creek 8400 -M -M * .5 -M *
Cold Springs 9630 .2 .0 * .0 .2 0
Deer Park 9700 .2 .0 * .2 .1 200
Hobbs Park 10100 .1 .0 * .0 .2 0
Kirwin 9550 .2 .0 * .2 .1 200
Little Warm 9370 .2 .0 * .1 .1 100
Owl Creek 8975 .1 .0 * .3 .1 300
South Pass 9040 .0 .0 * .3 .1 300
St. Lawrence Alt 8620 .0 .0 * .1 .2 50
Togwotee Pass 9580 .3 .0 * .5 .1 500
Townsend Creek 8700 .1 .0 * .3 .2 150
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Basin Index (%) * 143
BIGHORN BASIN
Bald Mtn. 9380 .2 .0 * .1 .2 50
Bear Trap Meadow 8200 .0 .0 * .1 .1 100
Bone Springs Div 9350 .0 .1 0* .0 .2 0
Grave Springs 8550 .0 .0 * .0 .1 0
Kirwin 9550 .2 .0 * .2 .1 200
Marquette 8760 .3 -M * .4 -M *
Middle Powder 7760 .2 .0 * .0 .2 0
Owl Creek 8975 .1 .0 * .3 .1 300
Powder River Pass 9480 .1 .0 * .5 .1 500
Shell Creek 9580 .8 .3 267* .3 .2 150
Timber Creek 7950 .1 .0 * .2 .2 100
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Basin Index (%) 425* 113
SHOSHONE RIVER
Blackwater 9780 .0 .0 * .9 .3 300
Evening Star 9200 .1 .0 * .5 .3 167
Marquette 8760 .3 -M * .4 -M *
Sylvan Road 7120 .3 .0 * .5 .2 250
Younts Peak 8350 -M .0 * -M .2 *
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Basin Index (%) * 238
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * .1 .1 100
Cloud Peak Reservoir 9860 .1 .0 * .2 .2 100
Grave Springs 8550 .0 .0 * .0 .1 0
Hansen Sawmill 8360 .0 .0 * .2 .1 200
Middle Powder 7760 .2 .0 * .0 .2 0
Powder River Pass 9480 .1 .0 * .5 .1 500
Soldier Park 8720 -M -M * .4 -M *
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Basin Index (%) * 125
TONGUE RIVER
Big Goose 7990 .1 .0 * .0 .1 0
Bone Springs Div 9350 .0 .1 0* .0 .2 0
Burgess Junction 7880 .0 .0 * .3 .1 300
Dome Lake 8880 .4 .0 * .1 .2 50
Little Goose 8870 -M -M * .1 -M *
Sucker Creek 8880 .2 .0 * .2 .2 100
Tie Creek 6870 .0 .0 * .0 .2 0
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Basin Index (%) 700* 60
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .0 .1 0
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Basin Index (%) * 0
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * -M .1 *
North Rapid Creek 6130 .0 .0 * .1 .1 100
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Basin Index (%) * 100
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .1 0* -M .3 *
Blackhall Mtn 9820 .1 -M * .0 -M *
Columbine 9160 .0 .0 * -M .2 *
Divide Peak 8880 .1 .0 * -M .2 *
Joe Wright 10120 .3 .0 * .1 .2 50
Laprele Creek 8375 .1 .0 * .1 .1 100
Med Bow 10500 .2 -M * .0 -M *
North French Creek 10130 .0 .0 * .0 .2 0
Never Summer 10280 .0 .0 * .1 -M *
Old Battle 10000 .2 .0 * .0 .3 0
Rawah 9020 .1 .0 * .1 .2 50
Sage Creek Basin 7850 .0 .0 * .0 .2 0
Sand Lake 10050 .0 .0 * .1 .2 50
South Brush Creek 8440 .1 .0 * .1 .2 50
Tower 10500 .1 .0 * -M .2 *
Webber Springs 9250 .1 .0 * .0 .2 0
Willow Creek Pass 9540 .1 .0 * .1 .1 100
Zirkel 9340 -M .0 * -M .4 *
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Basin Index (%) 1200* 32
SWEETWATER
Deer Park 9700 .2 .0 * .2 .1 200
Larsen Creek 9000 .1 .0 * .1 -M *
South Pass 9040 .0 .0 * .3 .1 300
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Basin Index (%) * 250
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .1 .1 100
Laprele Creek 8375 .1 .0 * .1 .1 100
Reno Hill 8400 .0 .0 * .0 .1 0
Windy Peak 7900 .1 .0 * .0 .1 0
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Basin Index (%) * 50
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * .0 .1 0
Cinnabar Park 9574 .1 .0 * .0 .2 0
Crow Creek 8330 -M .0 * .0 .1 0
Deadman Hill 10220 .1 .0 * .0 .1 0
Rawah 9020 .1 .0 * .1 .2 50
Roach 9700 .0 .0 * -M .1 *
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Basin Index (%) * 14
S. PLATTE
Black Mountain 8920 .0 -M * -M -M *
Crow Creek 8330 -M .0 * .0 .1 0
Deadman Hill 10220 .1 .0 * .0 .1 0
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Basin Index (%) * 0
LITTLE SNAKE RIVER
Battle Mountain 7440 .2 .0 * -M .2 *
Divide Peak 8880 .1 .0 * -M .2 *
Elk River 8700 .1 .0 * .0 .2 0
Little Snake River 8915 .1 .0 * -M .3 *
Old Battle 10000 .2 .0 * .0 .3 0
Sage Creek Basin 7850 .0 .0 * .0 .2 0
Sandstone RS 8150 -M .0 * .0 .2 0
Whiskey Park 8950 .1 .0 * .1 .2 50
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Basin Index (%) * 9
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * .4 .1 400
Blind Bull Sum 8650 .2 .0 * .4 .2 200
East Rim Divide 7930 .0 .0 * .5 .1 500
Elkhart Park G.S. 9400 .2 .0 * .8 .1 800
Gros Ventre Summit 8750 .3 .0 * 1.1 .1 1100
Gunsight Pass 9820 .0 .0 * .6 .1 600
Kendall R.S. 7740 .0 .0 * .7 .1 700
Loomis Park 8240 .1 .0 * .6 .1 600
New Fork Lake 8340 .1 .0 * .1 .1 100
Pocket Creek 9360 .1 -M * .3 -M *
Snider Basin 8060 .3 .0 * .6 .1 600
Spring Creek Divide 9000 .1 .0 * .7 .2 350
Triple Peak 8500 .2 .0 * .6 .1 600
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Basin Index (%) * 507
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .1 -M *
Buck Pasture 9700 .2 -M * .3 -M *
EF Blacks Fork GS 9360 .1 -M * .2 -M *
Hams Fork 7840 .3 .0 * .5 .1 500
Hewinta 9519 .2 .0 * .2 .1 200
Hickerson Park 9145 .3 .0 * .1 .2 50
Hole-in-Rock 9150 .0 .0 * .4 .2 200
Indian Creek 9425 .3 .0 * .4 .1 400
Kelley R.S. 8180 .2 .0 * .6 .1 600
Spirit Lk 10235 .1 -M * .2 -M *
Steel Creek Park 10200 .2 .0 * .3 .1 300
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Basin Index (%) * 278
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .0 -M *
Bug Lake 7950 .2 .0 * .2 .2 100
Burts Miller Ranch 8000 .0 -M * .1 -M *
Chalk Creek #1 8993 .2 .0 * .1 .2 50
Hayden Fork 9212 .0 .0 * .1 .2 50
Kelley R.S. 8180 .2 .0 * .6 .1 600
Lily Lake 9156 .0 .0 * .0 .2 0
Monte Cristo 8960 .2 .0 * .1 .2 50
Salt River Summit 7760 .1 .0 * .7 .1 700
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Basin Index (%) * 150
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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.