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 3 , 2014
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7030 .0 .0 * .2 .1 200
Black Bear 8170 .0 .0 * -M .3 *
Blind Bull Sum 8650 .0 .0 * .0 .2 0
Cottonwood Creek 7670 .2 .0 * .2 .2 100
East Rim Divide 7930 .0 .0 * .2 .1 200
Grand Targhee 9260 1.4 .8 175* .6 .2 300
Granite Creek 6770 .0 .0 * .2 .1 200
Grassy Lake 7265 .2 .0 * .0 .4 0
Gros Ventre Summit 8750 .1 .0 * .2 .1 200
Gunsight Pass 9820 .0 .0 * .2 .1 200
Lewis Lake Divide 7850 .0 .0 * .1 .3 33
Phillips Bench 8200 .0 .0 * .1 .2 50
Salt River Summit 7760 .0 .0 * .3 .1 300
Snake River Station 6920 .0 .0 * .1 .2 50
Spring Creek Divide 9000 .3 .0 * .0 .2 0
Thumb Divide 7980 .0 .0 * .2 .2 100
Togwotee Pass 9580 .1 .0 * .1 .1 100
Two Ocean Plateau 9240 .6 .0 * .3 .2 150
Willow Creek 8380 .0 .0 * .2 .2 100
Younts Peak 8350 -M .0 * -M .2 *
----- -----
Basin Index (%) 362* 100
MADISON-GALLATIN
Black Bear 8170 .0 .0 * -M .3 *
Canyon 7870 .0 .0 * .1 .2 50
Madison Plateau 7750 .0 .0 * .0 .2 0
West Yellowstone 6700 .0 .0 * .0 .2 0
Whiskey Creek 6800 .0 .0 * .1 .2 50
----- -----
Basin Index (%) * 25
YELLOWSTONE
Beartooth Lake 9360 .0 .1 0* .0 .2 0
Burnt Mtn 5880 .2 .0 * .3 .2 150
Canyon 7870 .0 .0 * .1 .2 50
Cole Creek 7850 .0 .0 * .4 .3 133
Evening Star 9200 .1 .0 * .1 .3 33
Fisher Creek 9100 .0 .0 * .0 .2 0
Northeast Entrance 7350 .1 .0 * .0 .2 0
Parker Peak 9400 .1 .1 100* -M .3 *
Sylvan Lake 8420 .3 .0 * .1 .3 33
Thumb Divide 7980 .0 .0 * .2 .2 100
Two Ocean Plateau 9240 .6 .0 * .3 .2 150
White Mill 8700 .0 .0 * .0 .2 0
Wolverine 7650 .0 .0 * .0 .2 0
----- -----
Basin Index (%) 700* 56
WIND RIVER
Burroughs Creek 8750 .0 .0 * .0 .1 0
Castle Creek 8400 .1 -M * .1 -M *
Cold Springs 9630 .0 .0 * .1 .2 50
Deer Park 9700 .4 .0 * .4 .1 400
Hobbs Park 10100 .4 .0 * .6 .2 300
Kirwin 9550 .4 .0 * .3 .1 300
Little Warm 9370 .1 .0 * .2 .1 200
Owl Creek 8975 .2 .0 * .5 .1 500
South Pass 9040 .2 .0 * .4 .1 400
St. Lawrence Alt 8620 .0 .0 * .0 .2 0
Togwotee Pass 9580 .1 .0 * .1 .1 100
Townsend Creek 8700 .1 .0 * .3 .2 150
----- -----
Basin Index (%) * 193
BIGHORN BASIN
Bald Mtn. 9380 -M .0 * .2 .2 100
Bear Trap Meadow 8200 .0 .0 * .5 .1 500
Bone Springs Div 9350 .0 .1 0* .0 .2 0
Grave Springs 8550 .0 .0 * .3 .1 300
Kirwin 9550 .4 .0 * .3 .1 300
Marquette 8760 .0 -M * .1 -M *
Middle Powder 7760 1.1 .0 * .5 .2 250
Owl Creek 8975 .2 .0 * .5 .1 500
Powder River Pass 9480 .4 .0 * .7 .1 700
Shell Creek 9580 .3 .3 100* .2 .2 100
Timber Creek 7950 .4 .0 * .6 .2 300
----- -----
Basin Index (%) 700* 253
SHOSHONE RIVER
Blackwater 9780 .1 .0 * .1 .3 33
Evening Star 9200 .1 .0 * .1 .3 33
Marquette 8760 .0 -M * .1 -M *
Sylvan Road 7120 .0 .0 * .1 .2 50
Younts Peak 8350 -M .0 * -M .2 *
----- -----
Basin Index (%) * 38
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * .5 .1 500
Cloud Peak Reservoir 9860 .1 .0 * .4 .2 200
Grave Springs 8550 .0 .0 * .3 .1 300
Hansen Sawmill 8360 .2 .0 * .7 .1 700
Middle Powder 7760 1.1 .0 * .5 .2 250
Powder River Pass 9480 .4 .0 * .7 .1 700
Soldier Park 8720 .0 -M * .4 -M *
----- -----
Basin Index (%) * 388
TONGUE RIVER
Big Goose 7990 .1 .0 * .2 .1 200
Bone Springs Div 9350 .0 .1 0* .0 .2 0
Burgess Junction 7880 .0 .0 * .2 .1 200
Dome Lake 8880 .0 .0 * .3 .2 150
Little Goose 8870 .2 -M * .5 -M *
Sucker Creek 8880 .1 .0 * .3 .2 150
Tie Creek 6870 .0 .0 * .1 .2 50
----- -----
Basin Index (%) 200* 110
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .1 .1 100
----- -----
Basin Index (%) * 100
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * .2 .1 200
North Rapid Creek 6130 .0 .0 * .0 .1 0
----- -----
Basin Index (%) * 100
UPPER N. PLATTE
Arapaho Ridge 10960 .8 .1 800* .5 .3 167
Blackhall Mtn 9820 .0 -M * .3 -M *
Columbine 9160 .0 .0 * .3 .2 150
Divide Peak 8880 .0 .0 * .3 .2 150
Joe Wright 10120 .2 .0 * .4 .2 200
Laprele Creek 8375 .1 .0 * .1 .1 100
Med Bow 10500 .7 -M * .2 -M *
North French Creek 10130 .2 .0 * .2 .2 100
Never Summer 10280 1.2 .0 * .6 -M *
Old Battle 10000 .6 .0 * .2 .3 67
Rawah 9020 .2 .0 * .6 .2 300
Sage Creek Basin 7850 .2 .0 * .2 .2 100
Sand Lake 10050 .2 .0 * .1 .2 50
South Brush Creek 8440 .0 .0 * .2 .2 100
Tower 10500 1.7 .0 * .4 .2 200
Webber Springs 9250 .0 .0 * .1 .2 50
Willow Creek Pass 9540 .4 .0 * .5 .1 500
Zirkel 9340 .1 .0 * .3 .4 75
----- -----
Basin Index (%) 5900* 138
SWEETWATER
Deer Park 9700 .4 .0 * .4 .1 400
Larsen Creek 9000 .0 .0 * .0 -M *
South Pass 9040 .2 .0 * .4 .1 400
----- -----
Basin Index (%) * 400
LOWER N. PLATTE
Casper Mtn. 7900 .3 .0 * .3 .1 300
Laprele Creek 8375 .1 .0 * .1 .1 100
Reno Hill 8400 -M .0 * .3 .1 300
Windy Peak 7900 .0 .0 * .1 .1 100
----- -----
Basin Index (%) * 200
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * .1 .1 100
Cinnabar Park 9574 .1 .0 * .2 .2 100
Crow Creek 8330 .0 .0 * .2 .1 200
Deadman Hill 10220 .2 .0 * .3 .1 300
Rawah 9020 .2 .0 * .6 .2 300
Roach 9700 .2 .0 * .3 .1 300
----- -----
Basin Index (%) * 212
S. PLATTE
Black Mountain 8920 .1 -M * .3 -M *
Crow Creek 8330 .0 .0 * .2 .1 200
Deadman Hill 10220 .2 .0 * .3 .1 300
----- -----
Basin Index (%) * 250
LITTLE SNAKE RIVER
Battle Mountain 7440 .1 .0 * .1 .2 50
Divide Peak 8880 .0 .0 * .3 .2 150
Elk River 8700 .0 .0 * .2 .2 100
Little Snake River 8915 .2 .0 * .4 .3 133
Old Battle 10000 .6 .0 * .2 .3 67
Sage Creek Basin 7850 .2 .0 * .2 .2 100
Sandstone RS 8150 .1 .0 * .2 .2 100
Whiskey Park 8950 .2 .0 * .2 .2 100
----- -----
Basin Index (%) * 100
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * .0 .1 0
Blind Bull Sum 8650 .0 .0 * .0 .2 0
East Rim Divide 7930 .0 .0 * .2 .1 200
Elkhart Park G.S. 9400 .1 .0 * .2 .1 200
Gros Ventre Summit 8750 .1 .0 * .2 .1 200
Gunsight Pass 9820 .0 .0 * .2 .1 200
Kendall R.S. 7740 .0 .0 * .1 .1 100
Loomis Park 8240 .0 .0 * .1 .1 100
New Fork Lake 8340 .0 .0 * .1 .1 100
Pocket Creek 9360 -M -M * .1 -M *
Snider Basin 8060 .0 .0 * .2 .1 200
Spring Creek Divide 9000 .3 .0 * .0 .2 0
Triple Peak 8500 .0 .0 * .1 .1 100
----- -----
Basin Index (%) * 100
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .0 -M *
Buck Pasture 9700 .0 -M * .0 -M *
EF Blacks Fork GS 9360 .0 -M * .2 -M *
Hams Fork 7840 .0 .0 * .1 .1 100
Hewinta 9519 -M .0 * -M .1 *
Hickerson Park 9145 .4 .0 * .2 .2 100
Hole-in-Rock 9150 .0 .0 * .0 .2 0
Indian Creek 9425 .3 .0 * .3 .1 300
Kelley R.S. 8180 .4 .0 * .0 .1 0
Spirit Lk 10235 .0 -M * .0 -M *
Steel Creek Park 10200 -M .0 * .1 .1 100
----- -----
Basin Index (%) * 88
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .2 -M *
Bug Lake 7950 .3 .0 * .1 .2 50
Burts Miller Ranch 8000 .1 -M * .1 -M *
Chalk Creek #1 8993 .1 .0 * -M .2 *
Hayden Fork 9212 .1 .0 * .1 .2 50
Kelley R.S. 8180 .4 .0 * .0 .1 0
Lily Lake 9156 .0 .0 * .2 .2 100
Monte Cristo 8960 .3 .0 * .2 .2 100
Salt River Summit 7760 .0 .0 * .3 .1 300
----- -----
Basin Index (%) * 90
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.
