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 7 , 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 .5 20
Blind Bull Sum 8650 .0 .0 * .3 .4 75
Cottonwood Creek 7670 .1 .0 * -M .4 *
East Rim Divide 7930 -M .0 * -M .1 *
Grand Targhee 9260 .0 .6 0* .2 1.3 15
Granite Creek 6770 .0 .0 * -M .4 *
Grassy Lake 7265 .0 .0 * .1 .8 12
Gros Ventre Summit 8750 1.3 .0 * .4 .4 100
Gunsight Pass 9820 .1 .0 * .4 .6 67
Lewis Lake Divide 7850 .0 .0 * .3 .6 50
Loomis Park 8240 .1 .0 * .3 .4 75
Phillips Bench 8200 .2 .0 * .0 .4 0
Salt River Summit 7640 .4 .0 * .1 .3 33
Snake River Station 6920 .0 .0 * -M .5 *
Somsen Ranch 6800 .0 .0 * .0 .4 0
Spring Creek Divide 9000 .0 .0 * .1 .4 25
Thumb Divide 7980 .0 .0 * .1 .5 20
Togwotee Pass 9580 .0 .0 * .5 .6 83
Triple Peak 8500 .0 .0 * .1 .5 20
Two Ocean Plateau 9240 .3 .4 75* .2 .8 25
Willow Creek 8080 .0 .0 * -M .8 *
Younts Peak 8350 .0 .0 * .4 .4 100
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Basin Index (%) 250* 39
MADISON HEADWATERS IN WYOMING
Black Bear 8170 .0 .1 0* .5 .6 83
Canyon 7870 .0 -M * .8 -M *
Madison Plateau 7750 .0 .0 * .7 .5 140
West Yellowstone 6700 .0 .0 * .8 .3 267
Whiskey Creek 6800 .0 .0 * .4 .4 100
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Basin Index (%) 0* 133
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 .0 .4 0* .6 .4 150
Canyon 7870 .0 -M * .8 -M *
Evening Star 9200 .0 .0 * 1.0 .6 167
Fisher Creek 9100 .0 .0 * 1.2 .7 171
Monument Peak 8850 .0 .0 * 1.2 .6 200
Northeast Entrance 7350 .0 .0 * .7 .3 233
Parker Peak 9400 .0 .2 0* 1.2 .4 300
Sylvan Lake 8420 .0 .0 * .5 .8 62
Thumb Divide 7980 .0 .0 * .1 .5 20
Two Ocean Plateau 9240 .3 .4 75* .2 .8 25
White Mill 8700 .0 .0 * 1.0 .4 250
Wolverine 7650 .0 .0 * 1.2 .4 300
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Basin Index (%) 30* 151
WIND RIVER
Burroughs Creek 8750 .0 -M * .5 -M *
Castle Creek 8400 .0 .0 * .7 .4 175
Cold Springs 9630 .0 .0 * .5 .2 250
Deer Park 9700 .0 .0 * .2 .5 40
Hobbs Park 10100 .0 .2 0* .4 .4 100
Kirwin 9550 .0 .0 * .7 .6 117
Little Warm 9370 .0 .0 * .3 .4 75
South Pass 9040 .0 .0 * .3 .4 75
St. Lawrence Alt 8620 .0 -M * .6 -M *
Togwotee Pass 9580 .0 .0 * .5 .6 83
Townsend Creek 8700 .0 .0 * .2 .4 50
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Basin Index (%) 0* 97
BIGHORN BASIN
Bald Mtn. 9380 .0 .5 0* .8 .5 160
Bear Trap Meadow 8200 .0 .0 * .6 .4 150
Bone Springs Div 9350 .0 .4 0* 1.0 .6 167
Grave Springs 8550 .0 .0 * .3 .4 75
Kirwin 9550 .0 .0 * .7 .6 117
Marquette 8760 .0 .2 0* .4 .4 100
Middle Powder 7760 .0 .1 0* .5 .4 125
Owl Creek 8975 -M .0 * .7 .3 233
Powder River Pass 9480 .0 .1 0* .8 .6 133
Shell Creek 9580 .0 .9 0* .9 .7 129
Timber Creek 7950 .0 .1 0* .5 .7 71
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Basin Index (%) 0* 129
SHOSHONE RIVER
Blackwater 9780 .0 .3 0* .5 .6 83
Evening Star 9200 .0 .0 * 1.0 .6 167
Marquette 8760 .0 .2 0* .4 .4 100
Sylvan Lake 8420 .0 .0 * .5 .8 62
Sylvan Road 7120 .0 .0 * .3 .4 75
Younts Peak 8350 .0 .0 * .4 .4 100
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Basin Index (%) 0* 97
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * .6 .4 150
Cloud Peak Reservoir 9860 .0 .1 0* .5 .8 62
Grave Springs 8550 .0 .0 * .3 .4 75
Hansen Sawmill 8360 .0 .0 * .2 .5 40
Middle Powder 7760 .0 .1 0* .5 .4 125
Powder River Pass 9480 .0 .1 0* .8 .6 133
Soldier Park 8720 .0 .1 0* .3 .7 43
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Basin Index (%) 0* 84
TONGUE RIVER
Big Goose 7990 .0 .2 0* .7 .5 140
Bone Springs Div 9350 .0 .4 0* 1.0 .6 167
Burgess Junction 7880 .0 .2 0* .6 .6 100
Dome Lake 8880 .0 .0 * .7 .6 117
Little Goose 8870 .0 .2 0* .3 .6 50
Sucker Creek 8880 .0 .0 * .8 .4 200
Tie Creek 6870 .0 .0 * .8 .6 133
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Basin Index (%) 0* 126
BELLE FOURCHE
Blind Park 6890 .0 .0 * .4 .4 100
Cole Canyon 5910 .0 .0 * .2 .2 100
North Rapid Creek 6130 .0 .0 * .5 .3 167
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Basin Index (%) * 122
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * .4 .4 100
North Rapid Creek 6130 .0 .0 * .5 .3 167
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Basin Index (%) * 129
UPPER N. PLATTE
Arapaho Ridge 10976 -M .2 * .3 .5 60
Blackhall Mtn 9839 -M .0 * .2 .7 29
Cinnabar Park 9707 .0 .0 * .3 .6 50
Columbine 9167 .2 .0 * .2 .5 40
Divide Peak 8730 .1 .0 * .8 .4 200
Joe Wright 10158 .2 .0 * .6 .4 150
Laprele Creek 8390 .1 .0 * .1 .2 50
Med Bow 10512 -M -M * .8 -M *
Never Summer 10323 .2 .0 * .3 .6 50
North French Creek 10153 .0 .0 * .5 .4 125
Old Battle 9860 .2 .0 * .9 .5 180
Rawah 9069 -M .0 * .3 .6 50
Sage Creek Basin 7850 .0 .0 * 1.0 .4 250
Sand Lake 10098 .3 .0 * .9 .4 225
South Brush Creek 8495 .0 .0 * .5 .3 167
Tower 10620 .1 .0 * .3 .7 43
Webber Springs 9260 .1 .0 * .5 .4 125
Whiskey Park 9020 .1 .0 * .4 .4 100
Willow Creek Pass 9523 .1 .0 * .4 .4 100
Zirkel 9338 .0 .0 * .2 .6 33
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Basin Index (%) * 97
SWEETWATER
Deer Park 9700 .0 .0 * .2 .5 40
Larsen Creek 9000 1.2 .0 * .1 .6 17
South Pass 9040 .0 .0 * .3 .4 75
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Basin Index (%) * 40
LOWER N. PLATTE
Casper Mtn. 7920 .1 .0 * .2 .2 100
Laprele Creek 8390 .1 .0 * .1 .2 50
Reno Hill 8430 .0 .0 * .2 .3 67
Windy Peak 7915 .0 .0 * .0 .2 0
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Basin Index (%) * 56
LARAMIE RIVER
Brooklyn Lake 10250 .1 .0 * .6 .2 300
Cinnabar Park 9707 .0 .0 * .3 .6 50
Crow Creek 8335 .1 .0 * .2 .3 67
Deadman Hill 10239 .3 .0 * .1 .4 25
Rawah 9069 -M .0 * .3 .6 50
Roach 9740 .1 .0 * .2 .4 50
Windy Peak 7915 .0 .0 * .0 .2 0
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Basin Index (%) * 63
S. PLATTE
Crow Creek 8335 .1 .0 * .2 .3 67
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Basin Index (%) * 67
LITTLE SNAKE RIVER
Battle Mountain 7498 .0 .0 * .8 .4 200
Divide Peak 8730 .1 .0 * .8 .4 200
Elk River 8739 .0 .0 * .3 .5 60
Elkhead Divide 8800 .0 -M * .5 -M *
Little Snake River 8928 .0 .0 * .5 .7 71
Old Battle 9860 .2 .0 * .9 .5 180
Sage Creek Basin 7850 .0 .0 * 1.0 .4 250
Sandstone RS 8152 .0 .0 * .9 .4 225
Whiskey Park 9020 .1 .0 * .4 .4 100
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Basin Index (%) * 151
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * .2 .5 40
Blind Bull Sum 8650 .0 .0 * .3 .4 75
East Rim Divide 7930 -M .0 * -M .1 *
Elkhart Park G.S. 9400 .1 .0 * .6 .4 150
Gros Ventre Summit 8750 1.3 .0 * .4 .4 100
Gunsight Pass 9820 .1 .0 * .4 .6 67
Indian Creek 9425 .0 .0 * .1 .2 50
Kendall R.S. 7740 -M .0 * -M .2 *
Larsen Creek 9000 1.2 .0 * .1 .6 17
Loomis Park 8240 .1 .0 * .3 .4 75
New Fork Lake 8340 .0 .0 * .2 .2 100
Pocket Creek 9360 -M -M * .1 -M *
Snider Basin 8060 .0 .0 * -M .2 *
Spring Creek Divide 9000 .0 .0 * .1 .4 25
Triple Peak 8500 .0 .0 * .1 .5 20
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Basin Index (%) * 61
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 * .0 .1 0
Henrys Fork 10182 -M -M * .0 -M *
Hewinta 9500 .0 .0 * .0 .4 0
Hickerson Park 9122 .0 .0 * .0 .2 0
Hole-in-Rock 9168 .0 .0 * .2 .2 100
Indian Creek 9425 .0 .0 * .1 .2 50
Kelley R.S. 8180 .0 .0 * .1 .2 50
Spirit Lk 10235 .0 .0 * .3 .6 50
Steel Creek Park 10158 .0 .0 * .0 .4 0
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Basin Index (%) * 30
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .0 -M *
Bug Lake 7987 .0 .0 * .0 .2 0
Burts Miller Ranch 8000 .0 .0 * .0 .2 0
Chalk Creek #1 9171 .0 .0 * .0 .6 0
Giveout 6930 -M .0 * .0 .4 0
Hayden Fork 9130 .0 .0 * .0 .4 0
Kelley R.S. 8180 .0 .0 * .1 .2 50
Lily Lake 9133 .0 .0 * .0 .3 0
Monte Cristo 8932 .2 .0 * .0 .5 0
Salt River Summit 7640 .4 .0 * .1 .3 33
Spring Creek Divide 9000 .0 .0 * .1 .4 25
Trial Lake 9992 .0 .0 * .1 .3 33
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Basin Index (%) * 11
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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.
