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 MONDAY: OCTOBER 10 , 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 .0 .0 * 2.7 .6 450
Black Bear 8170 .9 .3 300* 3.1 1.1 282
Blind Bull Sum 8650 .8 .0 * .8 .6 133
Cottonwood Creek 7670 .6 .0 * 2.3 .8 288
East Rim Divide 7930 .0 .0 * 1.2 .4 300
Grand Targhee 9260 5.0 1.2 417* -M 2.0 *
Granite Creek 6770 .0 .0 * 1.9 .5 380
Grassy Lake 7265 1.6 .0 * 3.9 1.0 390
Gros Ventre Summit 8750 .3 .0 * 1.8 .5 360
Gunsight Pass 9820 .6 .0 * 2.2 .7 314
Lewis Lake Divide 7850 .0 .0 * 2.3 .9 256
Phillips Bench 8200 1.1 .0 * 3.1 .6 517
Salt River Summit 7760 .1 .0 * 1.5 .5 300
Snake River Station 6920 .2 .0 * 2.6 .8 325
Spring Creek Divide 9000 .7 .0 * 1.8 .5 360
Thumb Divide 7980 .7 .0 * 1.8 .7 257
Togwotee Pass 9580 1.5 .4 375* 2.5 .7 357
Two Ocean Plateau 9240 -M .6 * -M .9 *
Willow Creek 8380 .4 .0 * 2.9 1.0 290
Younts Peak 8350 .1 .2 50* .7 .7 100
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Basin Index (%) 695* 310
MADISON-GALLATIN
Black Bear 8170 .9 .3 300* 3.1 1.1 282
Canyon 7870 .3 .0 * 1.9 .6 317
Madison Plateau 7750 .0 .0 * 2.3 .8 288
West Yellowstone 6700 .1 .0 * 1.5 .6 250
Whiskey Creek 6800 .1 .0 * 2.1 .7 300
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Basin Index (%) 467* 287
YELLOWSTONE
Beartooth Lake 9360 .2 .8 25* 1.0 .6 167
Burnt Mtn 5880 .0 .0 * 1.3 1.5 87
Canyon 7870 .3 .0 * 1.9 .6 317
Cole Creek 7850 .6 .8 75* 1.3 1.2 108
Evening Star 9200 1.0 .4 250* 2.8 1.0 280
Fisher Creek 9100 .1 .3 33* 1.9 1.0 190
Northeast Entrance 7350 .1 .0 * 1.5 .6 250
Parker Peak 9400 1.2 .7 171* 2.4 .9 267
Sylvan Lake 8420 2.2 .2 1100* 4.1 1.0 410
Thumb Divide 7980 .7 .0 * 1.8 .7 257
Two Ocean Plateau 9240 -M .6 * -M .9 *
White Mill 8700 .1 .3 33* 1.4 .9 156
Wolverine 7650 .0 .0 * 1.4 .6 233
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Basin Index (%) 186* 215
WIND RIVER
Burroughs Creek 8750 .0 -M * 1.2 -M *
Castle Creek 8400 .1 -M * .8 -M *
Cold Springs 9630 .3 .0 * .9 .6 150
Deer Park 9700 .6 .3 200* 1.1 .9 122
Hobbs Park 10100 .2 .2 100* 1.0 .7 143
Kirwin 9550 .2 .3 67* .8 .7 114
Little Warm 9370 .7 .0 * 1.6 .6 267
Owl Creek 8975 .0 .0 * .8 .6 133
South Pass 9040 .0 .0 * 1.0 .7 143
St. Lawrence Alt 8620 .0 .0 * .4 .6 67
Togwotee Pass 9580 1.5 .4 375* 2.5 .7 357
Townsend Creek 8700 .1 .0 * 1.4 .8 175
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Basin Index (%) 300* 167
BIGHORN BASIN
Bald Mtn. 9380 1.9 1.1 173* 1.3 1.0 130
Bear Trap Meadow 8200 .5 .0 * 1.2 .6 200
Bone Springs Div 9350 .7 .9 78* 1.4 1.0 140
Grave Springs 8550 .7 .0 * 1.4 .9 156
Kirwin 9550 .2 .3 67* .8 .7 114
Marquette 8760 .3 -M * 1.2 -M *
Middle Powder 7760 2.1 .1 2100* 1.0 .9 111
Owl Creek 8975 .0 .0 * .8 .6 133
Powder River Pass 9480 .8 .0 * 1.8 .7 257
Shell Creek 9580 2.2 1.1 200* 1.9 .9 211
Timber Creek 7950 .1 .0 * .6 .8 75
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Basin Index (%) 263* 151
SHOSHONE RIVER
Blackwater 9780 1.9 .8 238* 3.5 1.0 350
Evening Star 9200 1.0 .4 250* 2.8 1.0 280
Marquette 8760 .3 -M * 1.2 -M *
Sylvan Road 7120 .2 .0 * 2.7 .8 338
Younts Peak 8350 .1 .2 50* .7 .7 100
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Basin Index (%) 229* 277
POWDER RIVER
Bear Trap Meadow 8200 .5 .0 * 1.2 .6 200
Cloud Peak Reservoir 9860 .1 .0 * 1.0 .9 111
Grave Springs 8550 .7 .0 * 1.4 .9 156
Hansen Sawmill 8360 .1 .0 * .7 .6 117
Middle Powder 7760 2.1 .1 2100* 1.0 .9 111
Powder River Pass 9480 .8 .0 * 1.8 .7 257
Soldier Park 8720 .1 -M * 1.3 -M *
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Basin Index (%) 4300* 154
TONGUE RIVER
Big Goose 7990 .1 .0 * .6 .9 67
Bone Springs Div 9350 .7 .9 78* 1.4 1.0 140
Burgess Junction 7880 .0 .2 0* 1.2 .8 150
Dome Lake 8880 .0 .4 0* 1.0 1.0 100
Little Goose 8870 .0 -M * 1.0 -M *
Sucker Creek 8880 .2 .2 100* 1.4 .9 156
Tie Creek 6870 .1 .0 * .8 1.1 73
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Basin Index (%) 65* 112
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .6 .7 86
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Basin Index (%) * 86
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.3 .9 144
North Rapid Creek 6130 .0 .0 * .6 .8 75
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Basin Index (%) * 112
UPPER N. PLATTE
Arapaho Ridge 10960 .4 .2 200* .7 .8 88
Blackhall Mtn 9820 .4 -M * 1.0 -M *
Columbine 9160 .0 .0 * .6 .9 67
Divide Peak 8880 .0 .0 * .3 1.1 27
Joe Wright 10120 .0 .0 * 1.0 1.0 100
Laprele Creek 8375 .0 .0 * .2 .7 29
Med Bow 10500 1.0 -M * 1.3 -M *
North French Creek 10130 .0 .2 0* .7 1.0 70
Never Summer 10280 .5 .3 167* .7 -M *
Old Battle 10000 1.2 .2 600* .8 1.4 57
Rawah 9020 .2 .0 * .9 .8 112
Sage Creek Basin 7850 .0 .0 * .4 .9 44
Sand Lake 10050 .6 .2 300* .1 1.0 10
South Brush Creek 8440 .0 .0 * .5 .8 62
Tower 10500 .6 .5 120* .5 1.3 38
Webber Springs 9250 .0 .0 * 1.1 1.1 100
Willow Creek Pass 9540 .2 .0 * .4 .5 80
Zirkel 9340 .1 .0 * .8 1.4 57
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Basin Index (%) 238* 61
SWEETWATER
Deer Park 9700 .6 .3 200* 1.1 .9 122
Larsen Creek 9000 .2 .0 * 2.0 -M *
South Pass 9040 .0 .0 * 1.0 .7 143
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Basin Index (%) 267* 131
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * .6 .9 67
Laprele Creek 8375 .0 .0 * .2 .7 29
Reno Hill 8400 .6 .0 * 1.0 .8 125
Windy Peak 7900 .0 .0 * .2 .6 33
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Basin Index (%) * 67
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .6 *
Cinnabar Park 9574 .1 .0 * .6 .8 75
Crow Creek 8330 -M .0 * .3 .4 75
Deadman Hill 10220 .6 .0 * .6 .7 86
Rawah 9020 .2 .0 * .9 .8 112
Roach 9700 .1 .0 * .3 .7 43
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Basin Index (%) * 79
S. PLATTE
Black Mountain 8920 .1 -M * .2 -M *
Crow Creek 8330 -M .0 * .3 .4 75
Deadman Hill 10220 .6 .0 * .6 .7 86
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Basin Index (%) * 82
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .6 .7 86
Divide Peak 8880 .0 .0 * .3 1.1 27
Elk River 8700 .2 .0 * .6 .9 67
Little Snake River 8915 .1 .0 * 1.2 1.4 86
Old Battle 10000 1.2 .2 600* .8 1.4 57
Sage Creek Basin 7850 .0 .0 * .4 .9 44
Sandstone RS 8150 1.0 .0 * .1 .8 12
Whiskey Park 8950 .0 .0 * .9 1.0 90
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Basin Index (%) 1400* 60
UPPER GREEN RIVER
Big Sandy Opening 9080 .8 .0 * 2.0 .5 400
Blind Bull Sum 8650 .8 .0 * .8 .6 133
East Rim Divide 7930 .0 .0 * 1.2 .4 300
Elkhart Park G.S. 9400 1.1 .0 * 2.2 .6 367
Gros Ventre Summit 8750 .3 .0 * 1.8 .5 360
Gunsight Pass 9820 .6 .0 * 2.2 .7 314
Kendall R.S. 7740 .0 .0 * 1.3 .4 325
Loomis Park 8240 .0 .0 * 1.7 .5 340
New Fork Lake 8340 .1 .0 * .7 .4 175
Pocket Creek 9360 1.0 -M * 2.0 -M *
Snider Basin 8060 .2 .0 * 1.4 .3 467
Spring Creek Divide 9000 .7 .0 * 1.8 .5 360
Triple Peak 8500 .2 .0 * 1.8 .6 300
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Basin Index (%) * 315
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .4 -M *
Buck Pasture 9700 .1 -M * .8 -M *
EF Blacks Fork GS 9360 .0 -M * .8 -M *
Hams Fork 7840 .0 .0 * .8 .4 200
Hewinta 9519 .0 .0 * .5 .7 71
Hickerson Park 9145 .4 .0 * .6 .6 100
Hole-in-Rock 9150 .0 .0 * .7 .6 117
Indian Creek 9425 .5 .0 * 1.5 .5 300
Kelley R.S. 8180 .1 .0 * 1.2 .5 240
Spirit Lk 10235 .0 -M * 1.0 -M *
Steel Creek Park 10200 .6 .0 * .8 .8 100
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Basin Index (%) * 149
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .3 -M *
Bug Lake 7950 .1 .0 * .3 .6 50
Burts Miller Ranch 8000 .0 -M * .3 -M *
Chalk Creek #1 8993 .2 .0 * .9 .9 100
Hayden Fork 9212 .0 .0 * .7 .8 88
Kelley R.S. 8180 .1 .0 * 1.2 .5 240
Lily Lake 9156 .0 .0 * .3 .8 38
Monte Cristo 8960 .1 .0 * .4 .8 50
Salt River Summit 7760 .1 .0 * 1.5 .5 300
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Basin Index (%) * 108
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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.