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 6 , 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 .4 .0 * 2.5 .4 625
Black Bear 8170 1.1 .0 * 3.0 .7 429
Blind Bull Sum 8650 .6 .0 * .7 .4 175
Cottonwood Creek 7670 .8 .0 * 2.0 .5 400
East Rim Divide 7930 .0 .0 * 1.1 .3 367
Grand Targhee 9260 4.5 .9 500* -M 1.0 *
Granite Creek 6770 .0 .0 * 1.7 .4 425
Grassy Lake 7265 1.8 .0 * 3.4 .7 486
Gros Ventre Summit 8750 .3 .0 * 1.7 .3 567
Gunsight Pass 9820 .8 .0 * 1.9 .5 380
Lewis Lake Divide 7850 .4 .0 * 2.1 .6 350
Phillips Bench 8200 1.1 .0 * 2.9 .4 725
Salt River Summit 7760 .0 .0 * 1.1 .3 367
Snake River Station 6920 .3 .0 * 2.2 .6 367
Spring Creek Divide 9000 .7 .0 * 1.6 .4 400
Thumb Divide 7980 .6 .0 * 1.7 .5 340
Togwotee Pass 9580 1.5 .0 * 2.3 .5 460
Two Ocean Plateau 9240 2.2 .2 1100* -M .5 *
Willow Creek 8380 1.3 .0 * 2.7 .6 450
Younts Peak 8350 .0 .0 * .2 .5 40
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Basin Index (%) 1673* 405
MADISON-GALLATIN
Black Bear 8170 1.1 .0 * 3.0 .7 429
Canyon 7870 .7 .0 * 1.6 .4 400
Madison Plateau 7750 .1 .0 * 2.2 .6 367
West Yellowstone 6700 .0 .0 * 1.5 .4 375
Whiskey Creek 6800 .0 .0 * 1.5 .4 375
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Basin Index (%) * 392
YELLOWSTONE
Beartooth Lake 9360 .2 .5 40* .6 .4 150
Burnt Mtn 5880 .1 .0 * 1.3 1.0 130
Canyon 7870 .7 .0 * 1.6 .4 400
Cole Creek 7850 1.2 .5 240* 1.0 .8 125
Evening Star 9200 .9 .0 * 2.1 .6 350
Fisher Creek 9100 .1 .0 * 1.4 .6 233
Northeast Entrance 7350 .2 .0 * 1.3 .4 325
Parker Peak 9400 1.2 .4 300* 2.1 .6 350
Sylvan Lake 8420 2.3 .0 * 3.6 .6 600
Thumb Divide 7980 .6 .0 * 1.7 .5 340
Two Ocean Plateau 9240 2.2 .2 1100* -M .5 *
White Mill 8700 .1 .0 * .8 .5 160
Wolverine 7650 .1 .0 * 1.2 .4 300
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Basin Index (%) 619* 275
WIND RIVER
Burroughs Creek 8750 .0 -M * .3 -M *
Castle Creek 8400 .0 -M * .7 -M *
Cold Springs 9630 .2 .0 * .4 .4 100
Deer Park 9700 .8 .0 * .9 .6 150
Hobbs Park 10100 .0 .0 * .3 .5 60
Kirwin 9550 .0 .0 * .5 .4 125
Little Warm 9370 .4 .0 * 1.2 .4 300
Owl Creek 8975 .0 .0 * .8 .3 267
South Pass 9040 .1 .0 * .8 .5 160
St. Lawrence Alt 8620 .0 .0 * .4 .5 80
Togwotee Pass 9580 1.5 .0 * 2.3 .5 460
Townsend Creek 8700 .0 .0 * .6 .5 120
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Basin Index (%) * 178
BIGHORN BASIN
Bald Mtn. 9380 1.9 .5 380* 1.1 .5 220
Bear Trap Meadow 8200 .5 .0 * .8 .4 200
Bone Springs Div 9350 .7 .5 140* 1.0 .6 167
Grave Springs 8550 .9 .0 * 1.2 .6 200
Kirwin 9550 .0 .0 * .5 .4 125
Marquette 8760 .1 -M * 1.1 -M *
Middle Powder 7760 2.3 .0 * .8 .5 160
Owl Creek 8975 .0 .0 * .8 .3 267
Powder River Pass 9480 .9 .0 * 1.4 .5 280
Shell Creek 9580 2.0 .7 286* 1.5 .5 300
Timber Creek 7950 .0 .0 * .7 .5 140
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Basin Index (%) 541* 204
SHOSHONE RIVER
Blackwater 9780 1.3 .2 650* 2.6 .6 433
Evening Star 9200 .9 .0 * 2.1 .6 350
Marquette 8760 .1 -M * 1.1 -M *
Sylvan Road 7120 .2 .0 * 2.3 .5 460
Younts Peak 8350 .0 .0 * .2 .5 40
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Basin Index (%) 1200* 327
POWDER RIVER
Bear Trap Meadow 8200 .5 .0 * .8 .4 200
Cloud Peak Reservoir 9860 .2 .0 * 1.0 .5 200
Grave Springs 8550 .9 .0 * 1.2 .6 200
Hansen Sawmill 8360 .0 .0 * .4 .4 100
Middle Powder 7760 2.3 .0 * .8 .5 160
Powder River Pass 9480 .9 .0 * 1.4 .5 280
Soldier Park 8720 .1 -M * 1.0 -M *
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Basin Index (%) * 193
TONGUE RIVER
Big Goose 7990 .0 .0 * .2 .6 33
Bone Springs Div 9350 .7 .5 140* 1.0 .6 167
Burgess Junction 7880 .0 .1 0* .6 .4 150
Dome Lake 8880 .0 .0 * .3 .6 50
Little Goose 8870 .0 -M * .7 -M *
Sucker Creek 8880 .2 .0 * .5 .5 100
Tie Creek 6870 .0 .0 * .8 .7 114
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Basin Index (%) 150* 100
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .4 .4 100
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Basin Index (%) * 100
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.2 .5 240
North Rapid Creek 6130 .0 .0 * .6 .5 120
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Basin Index (%) * 180
UPPER N. PLATTE
Arapaho Ridge 10960 .4 .1 400* .4 .6 67
Blackhall Mtn 9820 .8 -M * .9 -M *
Columbine 9160 .1 .0 * .4 .5 80
Divide Peak 8880 .0 .0 * .0 .6 0
Joe Wright 10120 .0 .0 * .3 .5 60
Laprele Creek 8375 .1 .0 * .0 .4 0
Med Bow 10500 1.0 -M * 1.3 -M *
North French Creek 10130 .4 .0 * .6 .6 100
Never Summer 10280 .0 .0 * .3 -M *
Old Battle 10000 1.2 .0 * .4 .8 50
Rawah 9020 .5 .0 * .4 .5 80
Sage Creek Basin 7850 .0 .0 * .5 .5 100
Sand Lake 10050 .4 .0 * -M .6 *
South Brush Creek 8440 .0 .0 * .3 .5 60
Tower 10500 .9 .0 * .1 .8 12
Webber Springs 9250 .4 .0 * 1.1 .6 183
Willow Creek Pass 9540 .1 .0 * .2 .2 100
Zirkel 9340 .2 .0 * .7 1.0 70
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Basin Index (%) 4700* 67
SWEETWATER
Deer Park 9700 .8 .0 * .9 .6 150
Larsen Creek 9000 .5 .0 * 1.8 -M *
South Pass 9040 .1 .0 * .8 .5 160
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Basin Index (%) * 155
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .2 .4 50
Laprele Creek 8375 .1 .0 * .0 .4 0
Reno Hill 8400 .8 .0 * .5 .4 125
Windy Peak 7900 .0 .0 * .1 .4 25
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Basin Index (%) * 50
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .4 *
Cinnabar Park 9574 .3 .0 * .5 .5 100
Crow Creek 8330 -M .0 * .1 .2 50
Deadman Hill 10220 .3 .0 * .4 .3 133
Rawah 9020 .5 .0 * .4 .5 80
Roach 9700 .2 .0 * .2 .4 50
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Basin Index (%) * 84
S. PLATTE
Black Mountain 8920 .1 -M * .1 -M *
Crow Creek 8330 -M .0 * .1 .2 50
Deadman Hill 10220 .3 .0 * .4 .3 133
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Basin Index (%) * 100
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .6 .4 150
Divide Peak 8880 .0 .0 * .0 .6 0
Elk River 8700 .2 .0 * .6 .5 120
Little Snake River 8915 .5 .0 * 1.1 .8 138
Old Battle 10000 1.2 .0 * .4 .8 50
Sage Creek Basin 7850 .0 .0 * .5 .5 100
Sandstone RS 8150 -M .0 * -M .4 *
Whiskey Park 8950 .5 .0 * 1.0 .6 167
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Basin Index (%) * 100
UPPER GREEN RIVER
Big Sandy Opening 9080 .7 .0 * 1.8 .3 600
Blind Bull Sum 8650 .6 .0 * .7 .4 175
East Rim Divide 7930 .0 .0 * 1.1 .3 367
Elkhart Park G.S. 9400 1.0 .0 * 2.0 .3 667
Gros Ventre Summit 8750 .3 .0 * 1.7 .3 567
Gunsight Pass 9820 .8 .0 * 1.9 .5 380
Kendall R.S. 7740 .0 .0 * 1.2 .3 400
Loomis Park 8240 .0 .0 * 1.6 .3 533
New Fork Lake 8340 .2 .0 * .4 .3 133
Pocket Creek 9360 .9 -M * 1.7 -M *
Snider Basin 8060 .0 .0 * 1.2 .2 600
Spring Creek Divide 9000 .7 .0 * 1.6 .4 400
Triple Peak 8500 .3 .0 * 1.6 .4 400
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Basin Index (%) * 420
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .4 -M *
Buck Pasture 9700 .1 -M * .9 -M *
EF Blacks Fork GS 9360 .0 -M * .7 -M *
Hams Fork 7840 .0 .0 * .7 .3 233
Hewinta 9519 -M .0 * .5 .4 125
Hickerson Park 9145 .4 .0 * .4 .4 100
Hole-in-Rock 9150 .0 .0 * .6 .4 150
Indian Creek 9425 .8 .0 * 1.2 .3 400
Kelley R.S. 8180 .1 .0 * 1.1 .3 367
Spirit Lk 10235 .1 -M * .9 -M *
Steel Creek Park 10200 .4 .0 * .9 .5 180
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Basin Index (%) * 208
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .4 -M *
Bug Lake 7950 .0 .0 * .3 .4 75
Burts Miller Ranch 8000 .0 -M * .2 -M *
Chalk Creek #1 8993 .4 .0 * 1.0 .6 167
Hayden Fork 9212 .1 .0 * .6 .5 120
Kelley R.S. 8180 .1 .0 * 1.1 .3 367
Lily Lake 9156 .0 .0 * .4 .5 80
Monte Cristo 8960 .1 .0 * .5 .5 100
Salt River Summit 7760 .0 .0 * 1.1 .3 367
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Basin Index (%) * 161
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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.
