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 TUESDAY: OCTOBER 4 , 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 .2 .0 * 1.7 .2 850
Black Bear 8170 .5 .0 * 2.1 .4 525
Blind Bull Sum 8650 .4 .0 * .5 .3 167
Cottonwood Creek 7670 .5 .0 * 1.5 .3 500
East Rim Divide 7930 .0 .0 * 1.0 .1 1000
Grand Targhee 9260 -M .8 * 3.2 .4 800
Granite Creek 6770 .0 .0 * 1.2 .2 600
Grassy Lake 7265 .9 .0 * 2.1 .5 420
Gros Ventre Summit 8750 .2 .0 * 1.6 .1 1600
Gunsight Pass 9820 .6 .0 * 1.5 .2 750
Lewis Lake Divide 7850 .3 .0 * 1.5 .4 375
Phillips Bench 8200 .2 .0 * 1.4 .3 467
Salt River Summit 7760 .1 .0 * 1.1 .2 550
Snake River Station 6920 .2 .0 * 1.4 .3 467
Spring Creek Divide 9000 .6 .0 * 1.2 .2 600
Thumb Divide 7980 .7 .0 * 1.2 .3 400
Togwotee Pass 9580 .9 .0 * 1.3 .2 650
Two Ocean Plateau 9240 -M .0 * -M .3 *
Willow Creek 8380 .9 .0 * 1.9 .3 633
Younts Peak 8350 -M .0 * -M .3 *
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Basin Index (%) * 559
MADISON-GALLATIN
Black Bear 8170 .5 .0 * 2.1 .4 525
Canyon 7870 .3 .0 * .9 .2 450
Madison Plateau 7750 .0 .0 * 1.7 .4 425
West Yellowstone 6700 .0 .0 * 1.4 .3 467
Whiskey Creek 6800 .0 .0 * 1.3 .3 433
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Basin Index (%) * 462
YELLOWSTONE
Beartooth Lake 9360 .2 .3 67* .5 .3 167
Burnt Mtn 5880 .0 .0 * 1.0 .4 250
Canyon 7870 .3 .0 * .9 .2 450
Cole Creek 7850 .9 .2 450* .6 .4 150
Evening Star 9200 .4 .0 * 1.3 .4 325
Fisher Creek 9100 .2 .0 * 1.3 .4 325
Northeast Entrance 7350 .1 .0 * 1.3 .2 650
Parker Peak 9400 .8 .2 400* 1.5 .4 375
Sylvan Lake 8420 1.8 .0 * 2.7 .4 675
Thumb Divide 7980 .7 .0 * 1.2 .3 400
Two Ocean Plateau 9240 -M .0 * -M .3 *
White Mill 8700 .2 .0 * .8 .4 200
Wolverine 7650 .0 .0 * 1.1 .3 367
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Basin Index (%) 800* 346
WIND RIVER
Burroughs Creek 8750 .0 -M * .3 -M *
Castle Creek 8400 -M -M * .8 -M *
Cold Springs 9630 .0 .0 * .1 .3 33
Deer Park 9700 -M .0 * -M .2 *
Hobbs Park 10100 .1 .0 * -M .3 *
Kirwin 9550 .1 .0 * .5 .2 250
Little Warm 9370 .3 .0 * .8 .2 400
Owl Creek 8975 .1 .0 * .7 .2 350
South Pass 9040 .2 .0 * .8 .2 400
St. Lawrence Alt 8620 .0 .0 * .4 .3 133
Togwotee Pass 9580 .9 .0 * 1.3 .2 650
Townsend Creek 8700 .0 .0 * -M .3 *
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Basin Index (%) * 288
BIGHORN BASIN
Bald Mtn. 9380 1.0 .0 * .4 .3 133
Bear Trap Meadow 8200 .3 .0 * .5 .2 250
Bone Springs Div 9350 .4 .3 133* .7 .3 233
Grave Springs 8550 -M .0 * .1 .3 33
Kirwin 9550 .1 .0 * .5 .2 250
Marquette 8760 .4 -M * 1.1 -M *
Middle Powder 7760 1.7 .0 * .1 .3 33
Owl Creek 8975 .1 .0 * .7 .2 350
Powder River Pass 9480 .7 .0 * .0 .3 0
Shell Creek 9580 1.4 .5 280* .9 .3 300
Timber Creek 7950 .0 .0 * .6 .2 300
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Basin Index (%) 712* 173
SHOSHONE RIVER
Blackwater 9780 .3 .0 * 1.4 .4 350
Evening Star 9200 .4 .0 * 1.3 .4 325
Marquette 8760 .4 -M * 1.1 -M *
Sylvan Road 7120 .5 .0 * -M .3 *
Younts Peak 8350 -M .0 * -M .3 *
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Basin Index (%) * 338*
POWDER RIVER
Bear Trap Meadow 8200 .3 .0 * .5 .2 250
Cloud Peak Reservoir 9860 .5 .0 * .9 .3 300
Grave Springs 8550 -M .0 * .1 .3 33
Hansen Sawmill 8360 .1 .0 * .4 .2 200
Middle Powder 7760 1.7 .0 * .1 .3 33
Powder River Pass 9480 .7 .0 * .0 .3 0
Soldier Park 8720 -M -M * .9 -M *
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Basin Index (%) * 125
TONGUE RIVER
Big Goose 7990 .1 .0 * .1 .2 50
Bone Springs Div 9350 .4 .3 133* .7 .3 233
Burgess Junction 7880 .0 .0 * .4 .3 133
Dome Lake 8880 .0 .0 * .1 .4 25
Little Goose 8870 -M -M * .6 -M *
Sucker Creek 8880 .2 .0 * -M .3 *
Tie Creek 6870 .0 .0 * .7 .3 233
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Basin Index (%) 233* 133
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .2 .1 200
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Basin Index (%) * 200
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.1 .2 550
North Rapid Creek 6130 .0 .0 * .6 .2 300
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Basin Index (%) * 425
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .1 0* .1 .4 25
Blackhall Mtn 9820 .7 -M * .6 -M *
Columbine 9160 .1 .0 * .2 .3 67
Divide Peak 8880 .2 .0 * -M .4 *
Joe Wright 10120 .0 .0 * .2 .3 67
Laprele Creek 8375 .0 .0 * -M .2 *
Med Bow 10500 .6 -M * .7 -M *
North French Creek 10130 .3 .0 * .4 .3 133
Never Summer 10280 -M .0 * .1 -M *
Old Battle 10000 .8 .0 * .0 .5 0
Rawah 9020 .1 .0 * .0 .3 0
Sage Creek Basin 7850 .0 .0 * .4 .3 133
Sand Lake 10050 .1 .0 * -M .3 *
South Brush Creek 8440 .0 .0 * .2 .3 67
Tower 10500 1.0 .0 * -M .4 *
Webber Springs 9250 .4 .0 * .8 .4 200
Willow Creek Pass 9540 .1 .0 * .1 .1 100
Zirkel 9340 .4 .0 * .5 .5 100
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Basin Index (%) 3500* 78
SWEETWATER
Deer Park 9700 -M .0 * -M .2 *
Larsen Creek 9000 1.0 .0 * 1.6 -M *
South Pass 9040 .2 .0 * .8 .2 400
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Basin Index (%) * 400*
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * -M .2 *
Laprele Creek 8375 .0 .0 * -M .2 *
Reno Hill 8400 .2 .0 * -M .2 *
Windy Peak 7900 .0 .0 * .0 .2 0
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Basin Index (%) * 0*
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .2 *
Cinnabar Park 9574 .1 .0 * .2 .2 100
Crow Creek 8330 -M .0 * -M .2 *
Deadman Hill 10220 .1 .0 * .2 .2 100
Rawah 9020 .1 .0 * .0 .3 0
Roach 9700 .1 .0 * .1 .2 50
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Basin Index (%) * 56
S. PLATTE
Black Mountain 8920 .0 -M * -M -M *
Crow Creek 8330 -M .0 * -M .2 *
Deadman Hill 10220 .1 .0 * .2 .2 100
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Basin Index (%) * 100*
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .5 .3 167
Divide Peak 8880 .2 .0 * -M .4 *
Elk River 8700 .4 .0 * .5 .3 167
Little Snake River 8915 .7 .0 * .9 .4 225
Old Battle 10000 .8 .0 * .0 .5 0
Sage Creek Basin 7850 .0 .0 * .4 .3 133
Sandstone RS 8150 -M .0 * -M .3 *
Whiskey Park 8950 .4 .0 * .7 .4 175
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Basin Index (%) * 136
UPPER GREEN RIVER
Big Sandy Opening 9080 1.0 .0 * 1.8 .2 900
Blind Bull Sum 8650 .4 .0 * .5 .3 167
East Rim Divide 7930 .0 .0 * 1.0 .1 1000
Elkhart Park G.S. 9400 1.0 .0 * 1.8 .2 900
Gros Ventre Summit 8750 .2 .0 * 1.6 .1 1600
Gunsight Pass 9820 .6 .0 * 1.5 .2 750
Kendall R.S. 7740 .0 .0 * 1.2 .1 1200
Loomis Park 8240 .2 .0 * 1.5 .2 750
New Fork Lake 8340 .4 .0 * .3 .1 300
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .1 .0 * 1.2 .1 1200
Spring Creek Divide 9000 .6 .0 * 1.2 .2 600
Triple Peak 8500 .2 .0 * 1.2 .2 600
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Basin Index (%) * 740
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .2 -M *
Buck Pasture 9700 .1 -M * .6 -M *
EF Blacks Fork GS 9360 .0 -M * .5 -M *
Hams Fork 7840 .1 .0 * .7 .2 350
Hewinta 9519 .0 .0 * .4 .2 200
Hickerson Park 9145 .1 .0 * .3 .3 100
Hole-in-Rock 9150 .0 .0 * .5 .3 167
Indian Creek 9425 .9 .0 * 1.1 .2 550
Kelley R.S. 8180 .3 .0 * 1.0 .2 500
Spirit Lk 10235 .0 -M * .7 -M *
Steel Creek Park 10200 .3 .0 * .6 .2 300
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Basin Index (%) * 288
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .2 -M *
Bug Lake 7950 .2 .0 * .3 .3 100
Burts Miller Ranch 8000 .0 -M * .0 -M *
Chalk Creek #1 8993 .4 .0 * .7 .3 233
Hayden Fork 9212 .2 .0 * .5 .3 167
Kelley R.S. 8180 .3 .0 * 1.0 .2 500
Lily Lake 9156 .0 .0 * .3 .3 100
Monte Cristo 8960 .2 .0 * .5 .3 167
Salt River Summit 7760 .1 .0 * 1.1 .2 550
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Basin Index (%) * 232
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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.