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 WEDNESDAY: OCTOBER 5 , 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 * 2.0 .3 667
Black Bear 8170 1.0 .0 * 2.7 .6 450
Blind Bull Sum 8650 .5 .0 * .6 .3 200
Cottonwood Creek 7670 .7 .0 * 1.8 .4 450
East Rim Divide 7930 .0 .0 * 1.0 .2 500
Grand Targhee 9260 3.8 .8 475* -M .6 *
Granite Creek 6770 .0 .0 * 1.4 .3 467
Grassy Lake 7265 1.4 .0 * 2.8 .6 467
Gros Ventre Summit 8750 .2 .0 * 1.6 .2 800
Gunsight Pass 9820 .6 .0 * 1.6 .4 400
Lewis Lake Divide 7850 .4 .0 * 1.8 .5 360
Phillips Bench 8200 .7 .0 * 2.1 .4 525
Salt River Summit 7760 .0 .0 * 1.1 .3 367
Snake River Station 6920 .5 .0 * 1.9 .4 475
Spring Creek Divide 9000 .7 .0 * 1.6 .3 533
Thumb Divide 7980 .7 .0 * 1.5 .4 375
Togwotee Pass 9580 1.1 .0 * 1.7 .4 425
Two Ocean Plateau 9240 -M .1 * -M .5 *
Willow Creek 8380 1.2 .0 * 2.5 .5 500
Younts Peak 8350 -M .0 * -M .4 *
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Basin Index (%) 1712* 457
MADISON-GALLATIN
Black Bear 8170 1.0 .0 * 2.7 .6 450
Canyon 7870 .4 .0 * 1.1 .3 367
Madison Plateau 7750 .0 .0 * 1.9 .5 380
West Yellowstone 6700 .0 .0 * 1.4 .4 350
Whiskey Creek 6800 .1 .0 * 1.4 .3 467
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Basin Index (%) * 405
YELLOWSTONE
Beartooth Lake 9360 .2 .4 50* .5 .3 167
Burnt Mtn 5880 .0 .0 * 1.1 .8 138
Canyon 7870 .4 .0 * 1.1 .3 367
Cole Creek 7850 .8 .4 200* .6 .6 100
Evening Star 9200 .5 .0 * 1.6 .5 320
Fisher Creek 9100 .0 .0 * 1.4 .5 280
Northeast Entrance 7350 .1 .0 * 1.2 .3 400
Parker Peak 9400 .8 .3 267* 1.7 .5 340
Sylvan Lake 8420 2.0 .0 * -M .5 *
Thumb Divide 7980 .7 .0 * 1.5 .4 375
Two Ocean Plateau 9240 -M .1 * -M .5 *
White Mill 8700 .1 .0 * .8 .5 160
Wolverine 7650 .0 .0 * 1.1 .4 275
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Basin Index (%) 509* 247
WIND RIVER
Burroughs Creek 8750 .0 -M * .4 -M *
Castle Creek 8400 .0 -M * .8 -M *
Cold Springs 9630 .0 .0 * .4 .4 100
Deer Park 9700 .8 .0 * 1.0 .6 167
Hobbs Park 10100 .0 .0 * .3 .5 60
Kirwin 9550 .0 .0 * .5 .3 167
Little Warm 9370 .3 .0 * .9 .3 300
Owl Creek 8975 .0 .0 * .7 .3 233
South Pass 9040 .2 .0 * .8 .4 200
St. Lawrence Alt 8620 .0 .0 * .4 .4 100
Togwotee Pass 9580 1.1 .0 * 1.7 .4 425
Townsend Creek 8700 .0 .0 * .6 .5 120
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Basin Index (%) * 178
BIGHORN BASIN
Bald Mtn. 9380 1.8 .3 600* 1.0 .4 250
Bear Trap Meadow 8200 .4 .0 * .7 .3 233
Bone Springs Div 9350 .8 .4 200* 1.1 .5 220
Grave Springs 8550 1.0 .0 * 1.1 .5 220
Kirwin 9550 .0 .0 * .5 .3 167
Marquette 8760 .0 -M * 1.1 -M *
Middle Powder 7760 2.4 .0 * .8 .4 200
Owl Creek 8975 .0 .0 * .7 .3 233
Powder River Pass 9480 .9 .0 * 1.3 .4 325
Shell Creek 9580 1.9 .6 317* 1.4 .4 350
Timber Creek 7950 .0 .0 * .7 .4 175
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Basin Index (%) 708* 238
SHOSHONE RIVER
Blackwater 9780 .9 .0 * 2.1 .5 420
Evening Star 9200 .5 .0 * 1.6 .5 320
Marquette 8760 .0 -M * 1.1 -M *
Sylvan Road 7120 .3 .0 * 2.2 .4 550
Younts Peak 8350 -M .0 * -M .4 *
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Basin Index (%) * 421
POWDER RIVER
Bear Trap Meadow 8200 .4 .0 * .7 .3 233
Cloud Peak Reservoir 9860 .3 .0 * .9 .4 225
Grave Springs 8550 1.0 .0 * 1.1 .5 220
Hansen Sawmill 8360 .0 .0 * .4 .3 133
Middle Powder 7760 2.4 .0 * .8 .4 200
Powder River Pass 9480 .9 .0 * 1.3 .4 325
Soldier Park 8720 -M -M * .9 -M *
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Basin Index (%) * 226
TONGUE RIVER
Big Goose 7990 .0 .0 * .1 .5 20
Bone Springs Div 9350 .8 .4 200* 1.1 .5 220
Burgess Junction 7880 .0 .0 * .4 .4 100
Dome Lake 8880 .0 .0 * .3 .5 60
Little Goose 8870 .0 -M * .6 -M *
Sucker Creek 8880 .2 .0 * .4 .4 100
Tie Creek 6870 .0 .0 * .7 .6 117
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Basin Index (%) 250* 103
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .3 .3 100
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Basin Index (%) * 100
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.2 .4 300
North Rapid Creek 6130 .0 .0 * .5 .4 125
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Basin Index (%) * 212
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .1 0* .1 .5 20
Blackhall Mtn 9820 .5 -M * .6 -M *
Columbine 9160 .0 .0 * .2 .5 40
Divide Peak 8880 .0 .0 * .0 .6 0
Joe Wright 10120 .0 .0 * .2 .4 50
Laprele Creek 8375 .1 .0 * -M .3 *
Med Bow 10500 .8 -M * 1.0 -M *
North French Creek 10130 .3 .0 * .5 .5 100
Never Summer 10280 .0 .0 * .2 -M *
Old Battle 10000 .9 .0 * .1 .7 14
Rawah 9020 .2 .0 * .0 .5 0
Sage Creek Basin 7850 .0 .0 * .4 .5 80
Sand Lake 10050 .3 .0 * -M .5 *
South Brush Creek 8440 .0 .0 * .1 .4 25
Tower 10500 .9 .0 * -M .7 *
Webber Springs 9250 .3 .0 * .8 .6 133
Willow Creek Pass 9540 .1 .0 * .1 .2 50
Zirkel 9340 .4 .0 * .6 .8 75
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Basin Index (%) 3500* 50
SWEETWATER
Deer Park 9700 .8 .0 * 1.0 .6 167
Larsen Creek 9000 .7 .0 * 1.7 -M *
South Pass 9040 .2 .0 * .8 .4 200
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Basin Index (%) * 180
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .2 .4 50
Laprele Creek 8375 .1 .0 * -M .3 *
Reno Hill 8400 .8 .0 * .5 .4 125
Windy Peak 7900 .0 .0 * .1 .3 33
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Basin Index (%) * 73
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .3 *
Cinnabar Park 9574 .3 .0 * .4 .5 80
Crow Creek 8330 -M .0 * .1 .2 50
Deadman Hill 10220 .1 .0 * .2 .2 100
Rawah 9020 .2 .0 * .0 .5 0
Roach 9700 .1 .0 * .1 .3 33
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Basin Index (%) * 47
S. PLATTE
Black Mountain 8920 .0 -M * -M -M *
Crow Creek 8330 -M .0 * .1 .2 50
Deadman Hill 10220 .1 .0 * .2 .2 100
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Basin Index (%) * 75
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .5 .4 125
Divide Peak 8880 .0 .0 * .0 .6 0
Elk River 8700 .3 .0 * .5 .5 100
Little Snake River 8915 .6 .0 * .9 .7 129
Old Battle 10000 .9 .0 * .1 .7 14
Sage Creek Basin 7850 .0 .0 * .4 .5 80
Sandstone RS 8150 -M .0 * -M .4 *
Whiskey Park 8950 .3 .0 * .8 .5 160
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Basin Index (%) * 82
UPPER GREEN RIVER
Big Sandy Opening 9080 .8 .0 * 1.8 .3 600
Blind Bull Sum 8650 .5 .0 * .6 .3 200
East Rim Divide 7930 .0 .0 * 1.0 .2 500
Elkhart Park G.S. 9400 1.0 .0 * 1.9 .3 633
Gros Ventre Summit 8750 .2 .0 * 1.6 .2 800
Gunsight Pass 9820 .6 .0 * 1.6 .4 400
Kendall R.S. 7740 .0 .0 * 1.2 .2 600
Loomis Park 8240 .2 .0 * 1.6 .2 800
New Fork Lake 8340 .2 .0 * .4 .2 200
Pocket Creek 9360 1.2 -M * 1.7 -M *
Snider Basin 8060 .1 .0 * 1.2 .2 600
Spring Creek Divide 9000 .7 .0 * 1.6 .3 533
Triple Peak 8500 .4 .0 * 1.6 .3 533
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Basin Index (%) * 519
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .3 -M *
Buck Pasture 9700 .0 -M * .6 -M *
EF Blacks Fork GS 9360 .0 -M * .5 -M *
Hams Fork 7840 .0 .0 * .6 .2 300
Hewinta 9519 .0 .0 * .4 .3 133
Hickerson Park 9145 .2 .0 * .3 .3 100
Hole-in-Rock 9150 .0 .0 * .5 .4 125
Indian Creek 9425 .8 .0 * 1.2 .3 400
Kelley R.S. 8180 .2 .0 * 1.1 .3 367
Spirit Lk 10235 .0 -M * .7 -M *
Steel Creek Park 10200 .2 .0 * .6 .4 150
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Basin Index (%) * 214
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .2 -M *
Bug Lake 7950 .1 .0 * .3 .4 75
Burts Miller Ranch 8000 .0 -M * .0 -M *
Chalk Creek #1 8993 .2 .0 * .7 .5 140
Hayden Fork 9212 .1 .0 * .5 .4 125
Kelley R.S. 8180 .2 .0 * 1.1 .3 367
Lily Lake 9156 .0 .0 * .3 .4 75
Monte Cristo 8960 .1 .0 * .5 .4 125
Salt River Summit 7760 .0 .0 * 1.1 .3 367
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Basin Index (%) * 167
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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.
