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 FRIDAY: OCTOBER 7 , 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 .3 .0 * 2.7 .4 675
Black Bear 8170 1.1 .1 1100* 3.0 .8 375
Blind Bull Sum 8650 .7 .0 * .7 .4 175
Cottonwood Creek 7670 .9 .0 * 2.2 .6 367
East Rim Divide 7930 .0 .0 * 1.1 .3 367
Grand Targhee 9260 5.1 1.0 510* -M 1.4 *
Granite Creek 6770 .0 .0 * 1.8 .4 450
Grassy Lake 7265 2.1 .0 * 3.8 .8 475
Gros Ventre Summit 8750 .4 .0 * 1.8 .3 600
Gunsight Pass 9820 .8 .0 * 2.0 .6 333
Lewis Lake Divide 7850 .4 .0 * 2.2 .6 367
Phillips Bench 8200 1.2 .0 * 3.1 .5 620
Salt River Summit 7760 .1 .0 * 1.2 .4 300
Snake River Station 6920 .4 .0 * 2.6 .6 433
Spring Creek Divide 9000 .7 .0 * 1.7 .4 425
Thumb Divide 7980 .5 .0 * 1.6 .6 267
Togwotee Pass 9580 1.6 .1 1600* 2.4 .5 480
Two Ocean Plateau 9240 2.4 .3 800* -M .6 *
Willow Creek 8380 1.2 .0 * 2.9 .7 414
Younts Peak 8350 .1 .0 * .3 .6 50
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Basin Index (%) 1333* 391
MADISON-GALLATIN
Black Bear 8170 1.1 .1 1100* 3.0 .8 375
Canyon 7870 .7 .0 * 1.7 .5 340
Madison Plateau 7750 .1 .0 * 2.3 .6 383
West Yellowstone 6700 .0 .0 * 1.5 .5 300
Whiskey Creek 6800 .0 .0 * 1.6 .5 320
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Basin Index (%) 1900* 348
YELLOWSTONE
Beartooth Lake 9360 .3 .6 50* .7 .5 140
Burnt Mtn 5880 .1 .0 * 1.3 1.1 118
Canyon 7870 .7 .0 * 1.7 .5 340
Cole Creek 7850 1.2 .6 200* 1.0 .8 125
Evening Star 9200 1.2 .1 1200* 2.4 .7 343
Fisher Creek 9100 .2 .0 * 1.5 .7 214
Northeast Entrance 7350 .2 .0 * 1.4 .4 350
Parker Peak 9400 1.3 .5 260* 2.2 .7 314
Sylvan Lake 8420 2.6 .0 * 4.0 .7 571
Thumb Divide 7980 .5 .0 * 1.6 .6 267
Two Ocean Plateau 9240 2.4 .3 800* -M .6 *
White Mill 8700 .3 .0 * 1.0 .6 167
Wolverine 7650 .1 .0 * 1.4 .5 280
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Basin Index (%) 529* 259
WIND RIVER
Burroughs Creek 8750 .0 -M * .4 -M *
Castle Creek 8400 .0 -M * .7 -M *
Cold Springs 9630 .1 .0 * .5 .5 100
Deer Park 9700 .8 .0 * .9 .8 112
Hobbs Park 10100 .0 .0 * .4 .6 67
Kirwin 9550 .0 .0 * .7 .5 140
Little Warm 9370 .5 .0 * 1.3 .4 325
Owl Creek 8975 .0 .0 * .8 .4 200
South Pass 9040 .2 .0 * .8 .5 160
St. Lawrence Alt 8620 .0 .0 * .4 .5 80
Togwotee Pass 9580 1.6 .1 1600* 2.4 .5 480
Townsend Creek 8700 .0 .0 * .6 .6 100
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Basin Index (%) 3200* 166
BIGHORN BASIN
Bald Mtn. 9380 1.9 .7 271* 1.1 .6 183
Bear Trap Meadow 8200 .7 .0 * 1.0 .4 250
Bone Springs Div 9350 .8 .6 133* 1.2 .7 171
Grave Springs 8550 .8 .0 * 1.3 .7 186
Kirwin 9550 .0 .0 * .7 .5 140
Marquette 8760 .2 -M * 1.2 -M *
Middle Powder 7760 2.3 .0 * .9 .6 150
Owl Creek 8975 .0 .0 * .8 .4 200
Powder River Pass 9480 .9 .0 * 1.6 .5 320
Shell Creek 9580 2.1 .8 262* 1.6 .6 267
Timber Creek 7950 .0 .0 * .7 .6 117
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Basin Index (%) 452* 195
SHOSHONE RIVER
Blackwater 9780 1.9 .5 380* 3.3 .7 471
Evening Star 9200 1.2 .1 1200* 2.4 .7 343
Marquette 8760 .2 -M * 1.2 -M *
Sylvan Road 7120 .2 .0 * 2.6 .6 433
Younts Peak 8350 .1 .0 * .3 .6 50
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Basin Index (%) 567* 331
POWDER RIVER
Bear Trap Meadow 8200 .7 .0 * 1.0 .4 250
Cloud Peak Reservoir 9860 .3 .0 * 1.1 .6 183
Grave Springs 8550 .8 .0 * 1.3 .7 186
Hansen Sawmill 8360 .1 .0 * .5 .4 125
Middle Powder 7760 2.3 .0 * .9 .6 150
Powder River Pass 9480 .9 .0 * 1.6 .5 320
Soldier Park 8720 .2 -M * 1.1 -M *
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Basin Index (%) * 200
TONGUE RIVER
Big Goose 7990 .0 .0 * .2 .7 29
Bone Springs Div 9350 .8 .6 133* 1.2 .7 171
Burgess Junction 7880 .0 .1 0* .6 .6 100
Dome Lake 8880 .0 .1 0* .5 .6 83
Little Goose 8870 .1 -M * .9 -M *
Sucker Creek 8880 .3 .0 * .6 .6 100
Tie Creek 6870 .0 .0 * .8 .8 100
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Basin Index (%) 138* 98
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .4 .5 80
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Basin Index (%) * 80
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.3 .7 186
North Rapid Creek 6130 .0 .0 * .6 .6 100
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Basin Index (%) * 146
UPPER N. PLATTE
Arapaho Ridge 10960 .4 .1 400* .6 .6 100
Blackhall Mtn 9820 .6 -M * .9 -M *
Columbine 9160 .0 .0 * .3 .6 50
Divide Peak 8880 .0 .0 * .0 .7 0
Joe Wright 10120 .5 .0 * .9 .6 150
Laprele Creek 8375 .0 .0 * .0 .4 0
Med Bow 10500 .9 -M * 1.4 -M *
North French Creek 10130 .4 .0 * .7 .6 117
Never Summer 10280 .4 .0 * .7 -M *
Old Battle 10000 1.1 .0 * .4 .9 44
Rawah 9020 .8 .0 * .6 .6 100
Sage Creek Basin 7850 -M .0 * .5 .6 83
Sand Lake 10050 .4 .0 * -M .7 *
South Brush Creek 8440 .0 .0 * .2 .5 40
Tower 10500 .9 .0 * .0 1.0 0
Webber Springs 9250 .3 .0 * 1.0 .7 143
Willow Creek Pass 9540 .3 .0 * .4 .3 133
Zirkel 9340 .1 .0 * .7 1.0 70
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Basin Index (%) 5600* 69
SWEETWATER
Deer Park 9700 .8 .0 * .9 .8 112
Larsen Creek 9000 .5 .0 * 1.9 -M *
South Pass 9040 .2 .0 * .8 .5 160
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Basin Index (%) * 131
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .1 .5 20
Laprele Creek 8375 .0 .0 * .0 .4 0
Reno Hill 8400 .7 .0 * .5 .5 100
Windy Peak 7900 .0 .0 * .2 .4 50
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Basin Index (%) * 44
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .4 *
Cinnabar Park 9574 .2 .0 * .6 .6 100
Crow Creek 8330 -M .0 * .3 .2 150
Deadman Hill 10220 .4 .0 * .6 .4 150
Rawah 9020 .8 .0 * .6 .6 100
Roach 9700 .2 .0 * .3 .4 75
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Basin Index (%) * 109
S. PLATTE
Black Mountain 8920 .2 -M * .2 -M *
Crow Creek 8330 -M .0 * .3 .2 150
Deadman Hill 10220 .4 .0 * .6 .4 150
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Basin Index (%) * 150
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .7 .5 140
Divide Peak 8880 .0 .0 * .0 .7 0
Elk River 8700 .2 .0 * .6 .6 100
Little Snake River 8915 .0 .0 * 1.1 1.0 110
Old Battle 10000 1.1 .0 * .4 .9 44
Sage Creek Basin 7850 -M .0 * .5 .6 83
Sandstone RS 8150 1.0 .0 * -M .6 *
Whiskey Park 8950 .2 .0 * 1.0 .7 143
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Basin Index (%) * 86
UPPER GREEN RIVER
Big Sandy Opening 9080 .7 .0 * 1.9 .4 475
Blind Bull Sum 8650 .7 .0 * .7 .4 175
East Rim Divide 7930 .0 .0 * 1.1 .3 367
Elkhart Park G.S. 9400 1.1 .0 * 2.1 .4 525
Gros Ventre Summit 8750 .4 .0 * 1.8 .3 600
Gunsight Pass 9820 .8 .0 * 2.0 .6 333
Kendall R.S. 7740 .0 .0 * 1.3 .3 433
Loomis Park 8240 .0 .0 * 1.7 .3 567
New Fork Lake 8340 .1 .0 * .6 .3 200
Pocket Creek 9360 1.0 -M * 1.7 -M *
Snider Basin 8060 .0 .0 * 1.2 .2 600
Spring Creek Divide 9000 .7 .0 * 1.7 .4 425
Triple Peak 8500 .2 .0 * 1.7 .4 425
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Basin Index (%) * 414
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .4 -M *
Buck Pasture 9700 .0 -M * .9 -M *
EF Blacks Fork GS 9360 .0 -M * .8 -M *
Hams Fork 7840 .0 .0 * .6 .3 200
Hewinta 9519 .0 .0 * .5 .5 100
Hickerson Park 9145 .0 .0 * .5 .4 125
Hole-in-Rock 9150 .0 .0 * .6 .5 120
Indian Creek 9425 .9 .0 * 1.3 .4 325
Kelley R.S. 8180 .1 .0 * 1.1 .4 275
Spirit Lk 10235 .2 -M * .9 -M *
Steel Creek Park 10200 .4 .0 * .9 .6 150
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Basin Index (%) * 177
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .4 -M *
Bug Lake 7950 .0 .0 * .3 .5 60
Burts Miller Ranch 8000 .0 -M * .2 -M *
Chalk Creek #1 8993 .4 .0 * 1.0 .7 143
Hayden Fork 9212 .1 .0 * .7 .6 117
Kelley R.S. 8180 .1 .0 * 1.1 .4 275
Lily Lake 9156 .0 .0 * .4 .5 80
Monte Cristo 8960 .1 .0 * .5 .6 83
Salt River Summit 7760 .1 .0 * 1.2 .4 300
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Basin Index (%) * 141
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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.