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 SATURDAY: OCTOBER 8 , 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 * 2.7 .5 540
Black Bear 8170 1.0 .1 1000* 3.0 1.0 300
Blind Bull Sum 8650 .7 .0 * .8 .5 160
Cottonwood Creek 7670 .8 .0 * 2.3 .7 329
East Rim Divide 7930 .0 .0 * 1.1 .4 275
Grand Targhee 9260 5.1 1.1 464* -M 1.7 *
Granite Creek 6770 .0 .0 * 1.8 .4 450
Grassy Lake 7265 1.9 .0 * 3.8 .9 422
Gros Ventre Summit 8750 .3 .0 * 1.8 .4 450
Gunsight Pass 9820 .8 .0 * 2.1 .7 300
Lewis Lake Divide 7850 .3 .0 * 2.4 .8 300
Phillips Bench 8200 1.1 .0 * 3.1 .5 620
Salt River Summit 7760 .1 .0 * 1.4 .4 350
Snake River Station 6920 .2 .0 * 2.6 .7 371
Spring Creek Divide 9000 .8 .0 * 1.8 .5 360
Thumb Divide 7980 .6 .0 * 1.7 .7 243
Togwotee Pass 9580 1.5 .1 1500* 2.5 .6 417
Two Ocean Plateau 9240 -M .4 * -M .8 *
Willow Creek 8380 1.0 .0 * 2.9 .9 322
Younts Peak 8350 .1 .1 100* .4 .6 67
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Basin Index (%) 1171* 341
MADISON-GALLATIN
Black Bear 8170 1.0 .1 1000* 3.0 1.0 300
Canyon 7870 .6 .0 * 1.7 .5 340
Madison Plateau 7750 .0 .0 * 2.3 .7 329
West Yellowstone 6700 .0 .0 * 1.5 .5 300
Whiskey Creek 6800 .1 .0 * 1.9 .6 317
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Basin Index (%) 1700* 315
YELLOWSTONE
Beartooth Lake 9360 .4 .6 67* .9 .5 180
Burnt Mtn 5880 .1 .0 * 1.3 1.3 100
Canyon 7870 .6 .0 * 1.7 .5 340
Cole Creek 7850 1.2 .7 171* 1.1 1.0 110
Evening Star 9200 1.2 .2 600* 2.7 .8 338
Fisher Creek 9100 .3 .0 * 1.7 .8 212
Northeast Entrance 7350 .2 .0 * 1.4 .5 280
Parker Peak 9400 1.3 .5 260* 2.3 .8 288
Sylvan Lake 8420 2.5 .0 * 4.0 .8 500
Thumb Divide 7980 .6 .0 * 1.7 .7 243
Two Ocean Plateau 9240 -M .4 * -M .8 *
White Mill 8700 .3 .0 * 1.1 .7 157
Wolverine 7650 .0 .0 * 1.4 .5 280
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Basin Index (%) 435* 239
WIND RIVER
Burroughs Creek 8750 .1 -M * .8 -M *
Castle Creek 8400 .0 -M * .7 -M *
Cold Springs 9630 .2 .0 * .7 .6 117
Deer Park 9700 .9 .0 * 1.1 .8 138
Hobbs Park 10100 .1 .0 * .9 .6 150
Kirwin 9550 .1 .1 100* .8 .6 133
Little Warm 9370 .6 .0 * 1.5 .5 300
Owl Creek 8975 .1 .0 * .8 .4 200
South Pass 9040 .2 .0 * .9 .6 150
St. Lawrence Alt 8620 .0 .0 * .4 .5 80
Togwotee Pass 9580 1.5 .1 1500* 2.5 .6 417
Townsend Creek 8700 .0 .0 * .9 .6 150
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Basin Index (%) 1850* 181
BIGHORN BASIN
Bald Mtn. 9380 1.9 .8 238* 1.2 .7 171
Bear Trap Meadow 8200 .6 .0 * 1.1 .4 275
Bone Springs Div 9350 .8 .7 114* 1.2 .8 150
Grave Springs 8550 .9 .0 * 1.3 .8 162
Kirwin 9550 .1 .1 100* .8 .6 133
Marquette 8760 .2 -M * 1.5 -M *
Middle Powder 7760 2.4 .0 * 1.0 .7 143
Owl Creek 8975 .1 .0 * .8 .4 200
Powder River Pass 9480 .9 .0 * 1.7 .6 283
Shell Creek 9580 2.1 .9 233* 1.8 .7 257
Timber Creek 7950 .0 .0 * .7 .7 100
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Basin Index (%) 392* 181
SHOSHONE RIVER
Blackwater 9780 1.9 .6 317* 3.4 .8 425
Evening Star 9200 1.2 .2 600* 2.7 .8 338
Marquette 8760 .2 -M * 1.5 -M *
Sylvan Road 7120 .1 .0 * 2.6 .7 371
Younts Peak 8350 .1 .1 100* .4 .6 67
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Basin Index (%) 367* 314
POWDER RIVER
Bear Trap Meadow 8200 .6 .0 * 1.1 .4 275
Cloud Peak Reservoir 9860 .1 .0 * 1.4 .7 200
Grave Springs 8550 .9 .0 * 1.3 .8 162
Hansen Sawmill 8360 .1 .0 * .7 .5 140
Middle Powder 7760 2.4 .0 * 1.0 .7 143
Powder River Pass 9480 .9 .0 * 1.7 .6 283
Soldier Park 8720 .2 -M * 1.2 -M *
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Basin Index (%) * 195
TONGUE RIVER
Big Goose 7990 .1 .0 * .4 .8 50
Bone Springs Div 9350 .8 .7 114* 1.2 .8 150
Burgess Junction 7880 .1 .1 100* .7 .7 100
Dome Lake 8880 .0 .2 0* .7 .8 88
Little Goose 8870 .2 -M * 1.0 -M *
Sucker Creek 8880 .4 .1 400* .9 .7 129
Tie Creek 6870 .1 .0 * .8 .9 89
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Basin Index (%) 136* 100
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .5 .6 83
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Basin Index (%) * 83
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.3 .8 162
North Rapid Creek 6130 .0 .0 * .6 .6 100
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Basin Index (%) * 136
UPPER N. PLATTE
Arapaho Ridge 10960 .5 .1 500* .6 .6 100
Blackhall Mtn 9820 .7 -M * .9 -M *
Columbine 9160 .0 .0 * .5 .7 71
Divide Peak 8880 .0 .0 * .1 .9 11
Joe Wright 10120 .5 .0 * .9 .8 112
Laprele Creek 8375 .0 .0 * .1 .5 20
Med Bow 10500 1.0 -M * 1.3 -M *
North French Creek 10130 .4 .1 400* .7 .8 88
Never Summer 10280 .4 .0 * .7 -M *
Old Battle 10000 1.2 .0 * .5 1.1 45
Rawah 9020 .6 .0 * .8 .6 133
Sage Creek Basin 7850 .0 .0 * .4 .7 57
Sand Lake 10050 .4 .0 * .0 .8 0
South Brush Creek 8440 .0 .0 * .3 .6 50
Tower 10500 .9 .0 * .4 1.1 36
Webber Springs 9250 .3 .0 * 1.1 .8 138
Willow Creek Pass 9540 .3 .0 * .4 .4 100
Zirkel 9340 .1 .0 * .7 1.1 64
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Basin Index (%) 2800* 65
SWEETWATER
Deer Park 9700 .9 .0 * 1.1 .8 138
Larsen Creek 9000 .3 .0 * 2.0 -M *
South Pass 9040 .2 .0 * .9 .6 150
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Basin Index (%) * 143
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .2 .6 33
Laprele Creek 8375 .0 .0 * .1 .5 20
Reno Hill 8400 .8 .0 * .7 .6 117
Windy Peak 7900 .0 .0 * .2 .4 50
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Basin Index (%) * 57
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .5 *
Cinnabar Park 9574 .1 .0 * .6 .6 100
Crow Creek 8330 -M .0 * .3 .3 100
Deadman Hill 10220 .5 .0 * .6 .5 120
Rawah 9020 .6 .0 * .8 .6 133
Roach 9700 .2 .0 * .3 .5 60
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Basin Index (%) * 104
S. PLATTE
Black Mountain 8920 .2 -M * .2 -M *
Crow Creek 8330 -M .0 * .3 .3 100
Deadman Hill 10220 .5 .0 * .6 .5 120
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Basin Index (%) * 112
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .7 .6 117
Divide Peak 8880 .0 .0 * .1 .9 11
Elk River 8700 .2 .0 * .6 .7 86
Little Snake River 8915 .0 .0 * 1.1 1.0 110
Old Battle 10000 1.2 .0 * .5 1.1 45
Sage Creek Basin 7850 .0 .0 * .4 .7 57
Sandstone RS 8150 1.0 .0 * -M .7 *
Whiskey Park 8950 .2 .0 * .9 .8 112
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Basin Index (%) * 74
UPPER GREEN RIVER
Big Sandy Opening 9080 .7 .0 * 1.9 .4 475
Blind Bull Sum 8650 .7 .0 * .8 .5 160
East Rim Divide 7930 .0 .0 * 1.1 .4 275
Elkhart Park G.S. 9400 1.2 .0 * 2.1 .5 420
Gros Ventre Summit 8750 .3 .0 * 1.8 .4 450
Gunsight Pass 9820 .8 .0 * 2.1 .7 300
Kendall R.S. 7740 .0 .0 * 1.2 .4 300
Loomis Park 8240 .0 .0 * 1.7 .4 425
New Fork Lake 8340 .1 .0 * .6 .4 150
Pocket Creek 9360 1.1 -M * 1.8 -M *
Snider Basin 8060 .0 .0 * 1.2 .2 600
Spring Creek Divide 9000 .8 .0 * 1.8 .5 360
Triple Peak 8500 .2 .0 * 1.7 .5 340
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Basin Index (%) * 340
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .4 -M *
Buck Pasture 9700 .0 -M * .8 -M *
EF Blacks Fork GS 9360 .0 -M * .8 -M *
Hams Fork 7840 .0 .0 * .7 .3 233
Hewinta 9519 .0 .0 * .5 .6 83
Hickerson Park 9145 .0 .0 * .5 .5 100
Hole-in-Rock 9150 .0 .0 * .6 .5 120
Indian Creek 9425 .9 .0 * 1.4 .5 280
Kelley R.S. 8180 .1 .0 * 1.2 .4 300
Spirit Lk 10235 .0 -M * .9 -M *
Steel Creek Park 10200 .6 .0 * .8 .6 133
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Basin Index (%) * 168
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .3 -M *
Bug Lake 7950 .1 .0 * .3 .6 50
Burts Miller Ranch 8000 .4 -M * .2 -M *
Chalk Creek #1 8993 .3 .0 * 1.0 .8 125
Hayden Fork 9212 .1 .0 * .7 .7 100
Kelley R.S. 8180 .1 .0 * 1.2 .4 300
Lily Lake 9156 .0 .0 * .4 .6 67
Monte Cristo 8960 .1 .0 * .5 .7 71
Salt River Summit 7760 .1 .0 * 1.4 .4 350
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Basin Index (%) * 131
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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.