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 3 , 2019
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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 7060 .0 .0 * .2 .1 200
Black Bear 8170 .7 .0 * .1 .3 33
Blind Bull Sum 8650 .6 .0 * .0 .2 0
Cottonwood Creek 7670 .0 .0 * .0 .2 0
East Rim Divide 7930 .0 .0 * -M .1 *
Grand Targhee 9260 2.3 .8 288* .2 .2 100
Granite Creek 6770 .0 .0 * .0 .1 0
Grassy Lake 7265 .0 .0 * .4 .4 100
Gros Ventre Summit 8750 .0 .0 * .0 .1 0
Gunsight Pass 9820 .9 .0 * .2 .1 200
Lewis Lake Divide 7850 .0 .0 * .4 .3 133
Phillips Bench 8200 .7 .0 * .1 .2 50
Salt River Summit 7640 .0 .0 * .1 .1 100
Snake River Station 6920 .0 .0 * .2 .2 100
Spring Creek Divide 9000 .0 .0 * .1 .1 100
Thumb Divide 7980 .0 .0 * .0 .2 0
Togwotee Pass 9580 1.8 .0 * .3 .1 300
Two Ocean Plateau 9240 1.5 .0 * .5 .2 250
Willow Creek 8080 .3 .0 * .2 .2 100
Younts Peak 8350 .4 .0 * -M .2 *
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Basin Index (%) 1150* 91
MADISON-GALLATIN
Black Bear 8170 .7 .0 * .1 .3 33
Canyon 7870 .0 .0 * .0 .2 0
Madison Plateau 7750 .7 .0 * .2 .3 67
West Yellowstone 6700 .0 .0 * .1 .2 50
Whiskey Creek 6800 .6 .0 * .1 .2 50
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Basin Index (%) * 42
YELLOWSTONE
Beartooth Lake 9360 .6 .1 600* .3 .2 150
Burnt Mtn 5880 .0 .0 * .2 .2 100
Canyon 7870 .0 .0 * .0 .2 0
Cole Creek 7850 1.0 .0 * .1 .3 33
Evening Star 9200 1.2 .0 * .6 .3 200
Fisher Creek 9100 1.6 .0 * .5 .2 250
Northeast Entrance 7350 .1 .0 * .2 .2 100
Parker Peak 9400 .4 .1 400* .5 .3 167
Sylvan Lake 8420 1.0 .0 * .3 .3 100
Thumb Divide 7980 .0 .0 * .0 .2 0
Two Ocean Plateau 9240 1.5 .0 * .5 .2 250
White Mill 8700 1.6 .0 * .5 .2 250
Wolverine 7650 .0 .0 * .3 .2 150
Younts Peak 8350 .4 .0 * -M .2 *
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Basin Index (%) 4700* 133
WIND RIVER
Burroughs Creek 8750 -M -M * .6 -M *
Castle Creek 8400 .0 -M * .0 -M *
Cold Springs 9630 -M .0 * -M .2 *
Deer Park 9700 .2 .0 * .1 .1 100
Hobbs Park 10100 .3 .0 * .2 .2 100
Kirwin 9550 -M .0 * .2 .1 200
Little Warm 9370 1.4 .0 * .1 .1 100
Owl Creek 8975 .7 .0 * .3 .1 300
South Pass 9040 .1 .0 * .2 .1 200
St. Lawrence Alt 8620 .0 .0 * .0 .2 0
Togwotee Pass 9580 1.8 .0 * .3 .1 300
Townsend Creek 8700 .0 .0 * -M .2 *
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Basin Index (%) * 140
BIGHORN BASIN
Bald Mtn. 9380 1.6 .0 * -M .2 *
Bear Trap Meadow 8200 .2 .0 * .5 .1 500
Bone Springs Div 9350 .2 .1 200* .1 .2 50
Grave Springs 8550 .1 .0 * .2 .1 200
Kirwin 9550 -M .0 * .2 .1 200
Marquette 8760 .0 -M * .1 -M *
Middle Powder 7760 .3 .0 * .4 .2 200
Owl Creek 8975 .7 .0 * .3 .1 300
Powder River Pass 9480 .8 .0 * .4 .1 400
Shell Creek 9580 1.1 .3 367* .2 .2 100
Timber Creek 7950 .3 .0 * .2 .2 100
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Basin Index (%) 1325* 192
SHOSHONE RIVER
Blackwater 9780 -M .0 * .5 .3 167
Evening Star 9200 1.2 .0 * .6 .3 200
Marquette 8760 .0 -M * .1 -M *
Sylvan Lake 8420 1.0 .0 * .3 .3 100
Sylvan Road 7120 .3 .0 * .5 .2 250
Younts Peak 8350 .4 .0 * -M .2 *
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Basin Index (%) * 173
POWDER RIVER
Bear Trap Meadow 8200 .2 .0 * .5 .1 500
Cloud Peak Reservoir 9860 .0 .0 * .2 .2 100
Grave Springs 8550 .1 .0 * .2 .1 200
Hansen Sawmill 8360 .3 .0 * .4 .1 400
Middle Powder 7760 .3 .0 * .4 .2 200
Powder River Pass 9480 .8 .0 * .4 .1 400
Soldier Park 8720 .2 -M * .3 -M *
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Basin Index (%) * 262
TONGUE RIVER
Big Goose 7990 .0 .0 * .2 .1 200
Bone Springs Div 9350 .2 .1 200* .1 .2 50
Burgess Junction 7880 .0 .0 * .2 .1 200
Dome Lake 8880 .0 .0 * .0 .2 0
Little Goose 8870 .0 -M * .1 -M *
Sucker Creek 8880 .0 .0 * -M .2 *
Tie Creek 6870 -M .0 * -M .2 *
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Basin Index (%) 200* 83
BELLE FOURCHE
Blind Park 6890 .0 .0 * .2 .1 200
Cole Canyon 5910 .0 .0 * .4 .1 400
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Basin Index (%) * 300
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * .2 .1 200
North Rapid Creek 6130 -M .0 * .2 .1 200
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Basin Index (%) * 200
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .1 0* -M .3 *
Blackhall Mtn 9820 -M -M * -M -M *
Columbine 9160 .2 .0 * -M .2 *
Divide Peak 8880 -M .0 * -M .2 *
Joe Wright 10120 .0 .0 * .0 .2 0
Laprele Creek 8375 .0 .0 * .0 .1 0
Med Bow 10500 -M -M * .1 -M *
Never Summer 10280 .3 .0 * -M -M *
North French Creek 10130 .1 .0 * .1 .2 50
Old Battle 10000 .1 .0 * .0 .3 0
Rawah 9020 -M .0 * -M .2 *
Sage Creek Basin 7850 .1 .0 * -M .2 *
Sand Lake 10050 .0 .0 * .1 .2 50
South Brush Creek 8440 .0 .0 * .0 .2 0
Tower 10500 .0 .0 * -M .2 *
Webber Springs 9250 .0 .0 * -M .2 *
Whiskey Park 8950 -M .0 * .0 .2 0
Willow Creek Pass 9540 .1 .0 * -M .1 *
Zirkel 9340 .1 .0 * -M .4 *
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Basin Index (%) 1000* 14*
SWEETWATER
Deer Park 9700 .2 .0 * .1 .1 100
Larsen Creek 9000 .0 .0 * .3 -M *
South Pass 9040 .1 .0 * .2 .1 200
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Basin Index (%) * 150
LOWER N. PLATTE
Casper Mtn. 7900 .7 .0 * -M .1 *
Laprele Creek 8375 .0 .0 * .0 .1 0
Reno Hill 8400 .0 .0 * .0 .1 0
Windy Peak 7900 .1 .0 * -M .1 *
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Basin Index (%) * 0
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * .0 .1 0
Cinnabar Park 9574 .0 .0 * .1 .2 50
Crow Creek 8330 .0 .0 * .0 .1 0
Deadman Hill 10220 .1 .0 * .0 .1 0
Rawah 9020 -M .0 * -M .2 *
Roach 9700 .1 .0 * -M .1 *
Windy Peak 7900 .1 .0 * -M .1 *
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Basin Index (%) * 20
S. PLATTE
Black Mountain 8920 .1 -M * .0 -M *
Crow Creek 8330 .0 .0 * .0 .1 0
Deadman Hill 10220 .1 .0 * .0 .1 0
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Basin Index (%) * 0
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * -M .2 *
Divide Peak 8880 -M .0 * -M .2 *
Elk River 8700 .5 .0 * -M .2 *
Little Snake River 8915 -M .0 * -M .3 *
Old Battle 10000 .1 .0 * .0 .3 0
Sage Creek Basin 7850 .1 .0 * -M .2 *
Sandstone RS 8150 .2 .0 * -M .2 *
Whiskey Park 8950 -M .0 * .0 .2 0
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Basin Index (%) * 0*
UPPER GREEN RIVER
Big Sandy Opening 9080 .2 .0 * .1 .1 100
Blind Bull Sum 8650 .6 .0 * .0 .2 0
East Rim Divide 7930 .0 .0 * -M .1 *
Elkhart Park G.S. 9400 .0 .0 * .0 .1 0
Gros Ventre Summit 8750 .0 .0 * .0 .1 0
Gunsight Pass 9820 .9 .0 * .2 .1 200
Indian Creek 9425 .0 .0 * -M .1 *
Kendall R.S. 7740 .0 .0 * -M .1 *
Loomis Park 8240 .3 .0 * -M .1 *
New Fork Lake 8340 .0 .0 * -M .1 *
Pocket Creek 9360 -M -M * .2 -M *
Snider Basin 8060 .0 .0 * .0 .1 0
Spring Creek Divide 9000 .0 .0 * .1 .1 100
Triple Peak 8500 .1 .0 * -M .1 *
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Basin Index (%) * 50
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * .0 -M *
Buck Pasture 9632 .0 -M * .0 -M *
EF Blacks Fork GS 9360 .0 -M * .0 -M *
Hams Fork 7840 .0 .0 * -M .1 *
Hewinta 9500 .0 .0 * .3 .1 300
Hickerson Park 9122 .0 .0 * .0 .2 0
Hole-in-Rock 9168 .0 .0 * .0 .2 0
Indian Creek 9425 .0 .0 * -M .1 *
Kelley R.S. 8180 .0 .0 * .1 .1 100
Spirit Lk 10235 .0 -M * .0 -M *
Steel Creek Park 10158 .0 .0 * .0 .1 0
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Basin Index (%) * 57*
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .0 -M *
Bug Lake 7987 .0 .0 * .1 .2 50
Burts Miller Ranch 8000 .2 -M * .0 -M *
Chalk Creek #1 9171 .3 .0 * .0 .2 0
Hayden Fork 9130 .0 .0 * .2 .2 100
Kelley R.S. 8180 .0 .0 * .1 .1 100
Lily Lake 9133 .1 .0 * .0 .2 0
Monte Cristo 8932 .4 .0 * .1 .2 50
Salt River Summit 7640 .0 .0 * .1 .1 100
Spring Creek Divide 9000 .0 .0 * .1 .1 100
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Basin Index (%) * 54
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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.