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 TUESDAY: OCTOBER 4 , 2022
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Median Med
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WYOMING
SNAKE RIVER
Base Camp 7060 .0 .0 * .1 .1 100
Blind Bull Sum 8650 .0 .0 * .3 .1 300
Cottonwood Creek 7670 .0 .0 * .1 .1 100
East Rim Divide 7930 -M .0 * -M .0 *
Grand Targhee 9260 .0 .2 0* .2 .4 50
Granite Creek 6770 .0 .0 * .2 .1 200
Grassy Lake 7265 .0 .0 * .1 .1 100
Gros Ventre Summit 8750 1.2 .0 * .4 .1 400
Gunsight Pass 9820 .1 .0 * .4 .2 200
Lewis Lake Divide 7850 .0 .0 * .2 .1 200
Loomis Park 8240 .2 .0 * .3 .1 300
Phillips Bench 8200 .2 .0 * .0 .1 0
Salt River Summit 7640 .3 .0 * .0 .0 *
Snake River Station 6920 .0 .0 * -M .1 *
Somsen Ranch 6800 .0 .0 * .0 .1 0
Spring Creek Divide 9000 .0 .0 * .1 .2 50
Thumb Divide 7980 .0 .0 * .1 .1 100
Togwotee Pass 9580 .1 .0 * .4 .2 200
Triple Peak 8500 .0 .0 * .1 .2 50
Two Ocean Plateau 9240 .4 .0 * .2 .3 67
Willow Creek 8080 .0 .0 * .1 .2 50
Younts Peak 8350 .0 .0 * .3 .1 300
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Basin Index (%) 1250* 124
MADISON HEADWATERS IN WYOMING
Black Bear 8170 .0 .0 * .4 .2 200
Canyon 7870 .0 -M * .8 -M *
Madison Plateau 7750 .1 .0 * .7 .1 700
West Yellowstone 6700 .0 .0 * .8 .0 *
Whiskey Creek 6800 .0 .0 * .4 .2 200
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Basin Index (%) * 460
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 .0 .0 * .3 .2 150
Canyon 7870 .0 -M * .8 -M *
Evening Star 9200 .0 .0 * 1.0 .1 1000
Fisher Creek 9100 .2 .0 * 1.1 .2 550
Monument Peak 8850 .0 .0 * 1.2 .2 600
Northeast Entrance 7350 .1 .0 * .7 .1 700
Parker Peak 9400 .0 .0 * 1.1 .2 550
Sylvan Lake 8420 .0 .0 * .5 .1 500
Thumb Divide 7980 .0 .0 * .1 .1 100
Two Ocean Plateau 9240 .4 .0 * .2 .3 67
White Mill 8700 .0 .0 * 1.0 .2 500
Wolverine 7650 .0 .0 * 1.2 .2 600
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Basin Index (%) * 442
WIND RIVER
Burroughs Creek 8750 .0 -M * .5 -M *
Castle Creek 8400 .0 .0 * .7 .2 350
Cold Springs 9630 -M .0 * .4 .1 400
Deer Park 9700 .0 .0 * .2 .1 200
Hobbs Park 10100 .2 .0 * .3 .1 300
Kirwin 9550 .1 .0 * .6 .2 300
Little Warm 9370 .0 .0 * .2 .2 100
South Pass 9040 .1 .0 * .2 .1 200
St. Lawrence Alt 8620 .0 -M * .4 -M *
Togwotee Pass 9580 .1 .0 * .4 .2 200
Townsend Creek 8700 .0 .0 * .1 .1 100
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Basin Index (%) * 238
BIGHORN BASIN
Bald Mtn. 9380 .0 .0 * .9 .2 450
Bear Trap Meadow 8200 .0 .0 * .6 .1 600
Bone Springs Div 9350 .0 .0 * 1.0 .2 500
Grave Springs 8550 .1 .0 * .3 .1 300
Kirwin 9550 .1 .0 * .6 .2 300
Marquette 8760 .0 .0 * .4 .2 200
Middle Powder 7760 .1 .0 * .5 .2 250
Owl Creek 8975 -M .0 * .6 .1 600
Powder River Pass 9480 .0 .0 * .6 .2 300
Shell Creek 9580 .0 .4 0* .9 .2 450
Timber Creek 7950 .0 .0 * .4 .1 400
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Basin Index (%) 75* 378
SHOSHONE RIVER
Blackwater 9780 .0 .0 * .4 .2 200
Evening Star 9200 .0 .0 * 1.0 .1 1000
Marquette 8760 .0 .0 * .4 .2 200
Sylvan Lake 8420 .0 .0 * .5 .1 500
Sylvan Road 7120 .0 .0 * .4 .1 400
Younts Peak 8350 .0 .0 * .3 .1 300
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Basin Index (%) * 375
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * .6 .1 600
Cloud Peak Reservoir 9860 .0 .0 * .5 .3 167
Grave Springs 8550 .1 .0 * .3 .1 300
Hansen Sawmill 8360 .0 .0 * .2 .1 200
Middle Powder 7760 .1 .0 * .5 .2 250
Powder River Pass 9480 .0 .0 * .6 .2 300
Soldier Park 8720 .0 .0 * .3 .3 100
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Basin Index (%) * 231
TONGUE RIVER
Big Goose 7990 .1 .0 * .6 .1 600
Bone Springs Div 9350 .0 .0 * 1.0 .2 500
Burgess Junction 7880 .0 .0 * .6 .2 300
Dome Lake 8880 .0 .0 * .7 .2 350
Little Goose 8870 .1 .0 * .3 .2 150
Sucker Creek 8880 .1 .0 * .8 .1 800
Tie Creek 6870 .0 .0 * .8 .1 800
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Basin Index (%) * 436
BELLE FOURCHE
Blind Park 6890 .0 .0 * .4 .1 400
Cole Canyon 5910 .0 .0 * .2 .1 200
North Rapid Creek 6130 -M .0 * .4 .1 400
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Basin Index (%) * 333
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * .4 .1 400
North Rapid Creek 6130 -M .0 * .4 .1 400
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Basin Index (%) * 400
UPPER N. PLATTE
Arapaho Ridge 10976 -M .0 * .3 .2 150
Blackhall Mtn 9839 -M .0 * .2 .3 67
Cinnabar Park 9707 .0 .0 * .2 .1 200
Columbine 9167 .2 .0 * .2 .2 100
Divide Peak 8730 .1 .0 * .8 .0 *
Joe Wright 10158 .2 .0 * .5 .2 250
Laprele Creek 8390 .1 .0 * .1 .1 100
Med Bow 10512 -M -M * .8 -M *
Never Summer 10323 .2 .0 * .3 .2 150
North French Creek 10153 .0 .0 * .5 .1 500
Old Battle 9860 .1 .0 * .8 .0 *
Rawah 9069 -M .0 * .2 .1 200
Sage Creek Basin 7850 .0 .0 * 1.0 .2 500
Sand Lake 10098 .3 .0 * .8 .1 800
South Brush Creek 8495 .0 .0 * .4 .1 400
Tower 10620 .1 .0 * .2 .2 100
Webber Springs 9260 .1 .0 * .5 .1 500
Whiskey Park 9020 .1 .0 * .4 .2 200
Willow Creek Pass 9523 .1 .0 * .1 .1 100
Zirkel 9338 .0 .0 * .2 .3 67
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Basin Index (%) * 275
SWEETWATER
Deer Park 9700 .0 .0 * .2 .1 200
Larsen Creek 9000 1.1 .0 * .1 .4 25
South Pass 9040 .1 .0 * .2 .1 200
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Basin Index (%) * 83
LOWER N. PLATTE
Casper Mtn. 7920 .0 .0 * .2 .0 *
Laprele Creek 8390 .1 .0 * .1 .1 100
Reno Hill 8430 .0 .0 * .1 .0 *
Windy Peak 7915 .0 .0 * .0 .0 *
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Basin Index (%) * 400
LARAMIE RIVER
Brooklyn Lake 10250 .2 .0 * .3 .0 *
Cinnabar Park 9707 .0 .0 * .2 .1 200
Crow Creek 8335 .1 .0 * .2 .0 *
Deadman Hill 10239 .2 .0 * .1 .1 100
Rawah 9069 -M .0 * .2 .1 200
Roach 9740 .2 .0 * .3 .1 300
Windy Peak 7915 .0 .0 * .0 .0 *
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Basin Index (%) * 325
S. PLATTE
Crow Creek 8335 .1 .0 * .2 .0 *
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Basin Index (%) * *
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * .8 .1 800
Divide Peak 8730 .1 .0 * .8 .0 *
Elk River 8739 .0 .0 * .4 .1 400
Elkhead Divide 8800 .0 -M * .5 -M *
Little Snake River 8928 .1 .0 * .5 .2 250
Old Battle 9860 .1 .0 * .8 .0 *
Sage Creek Basin 7850 .0 .0 * 1.0 .2 500
Sandstone RS 8152 .0 .0 * .8 .1 800
Whiskey Park 9020 .1 .0 * .4 .2 200
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Basin Index (%) * 611
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * .1 .1 100
Blind Bull Sum 8650 .0 .0 * .3 .1 300
East Rim Divide 7930 -M .0 * -M .0 *
Elkhart Park G.S. 9400 .1 .0 * .5 .1 500
Gros Ventre Summit 8750 1.2 .0 * .4 .1 400
Gunsight Pass 9820 .1 .0 * .4 .2 200
Indian Creek 9425 .0 .0 * .1 .1 100
Kendall R.S. 7740 .0 .0 * .3 .0 *
Larsen Creek 9000 1.1 .0 * .1 .4 25
Loomis Park 8240 .2 .0 * .3 .1 300
New Fork Lake 8340 .0 .0 * .1 .0 *
Pocket Creek 9360 -M -M * .1 -M *
Snider Basin 8060 -M .0 * -M .0 *
Spring Creek Divide 9000 .0 .0 * .1 .2 50
Triple Peak 8500 .0 .0 * .1 .2 50
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Basin Index (%) * 175
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 * .1 -M *
Hams Fork 7840 .0 .0 * .0 .0 *
Henrys Fork 10182 -M -M * .0 -M *
Hewinta 9500 .0 .0 * .0 .2 0
Hickerson Park 9122 .0 .0 * .0 .2 0
Hole-in-Rock 9168 .0 .0 * .1 .1 100
Indian Creek 9425 .0 .0 * .1 .1 100
Kelley R.S. 8180 .0 .0 * .1 .1 100
Spirit Lk 10235 .0 .0 * .3 .1 300
Steel Creek Park 10158 .0 .0 * .0 .2 0
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Basin Index (%) * 60
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .0 -M *
Bug Lake 7987 .0 .0 * .0 .1 0
Burts Miller Ranch 8000 .0 .0 * .0 .0 *
Chalk Creek #1 9171 .0 .0 * .0 .2 0
Giveout 6930 -M .0 * .0 .0 *
Hayden Fork 9130 .0 .0 * .0 .2 0
Kelley R.S. 8180 .0 .0 * .1 .1 100
Lily Lake 9133 .0 .0 * .0 .2 0
Monte Cristo 8932 .1 .0 * .0 .2 0
Salt River Summit 7640 .3 .0 * .0 .0 *
Spring Creek Divide 9000 .0 .0 * .1 .2 50
Trial Lake 9992 .0 .0 * .1 .2 50
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Basin Index (%) * 21
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Median (or Average) 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 (or Average) represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median (or Average) value for those sites on this day.
The TOTAL PRECIPITATION Percent of Median (or Average) represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Median (or Average) value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1991-2020.
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 or average for the day is less than 10% of the maximum
median or average value for the year.
* Basin - More than half of the stations for a basin with medians (or averages) report missing or invalid data
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians or averages 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.
