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 13 , 2023
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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 -M .0 * 1.4 .8 175
Blind Bull Sum 8650 -M .1 * 1.0 .8 125
Cottonwood Creek 7670 .1 .0 * 2.7 1.0 270
East Rim Divide 7930 -M .0 * .7 .4 175
Grand Targhee 9260 1.4 1.5 93* 3.4 2.1 162
Granite Creek 6770 .0 .0 * .9 .6 150
Grassy Lake 7265 -M .0 * 2.1 1.2 175
Gros Ventre Summit 8750 .6 .1 600* 1.8 .8 225
Gunsight Pass 9820 1.6 .0 * 2.8 .8 350
Lewis Lake Divide 7850 .1 .0 * 1.2 1.0 120
Loomis Park 8240 .2 .0 * 1.1 .6 183
Phillips Bench 8200 .2 .0 * 1.8 .9 200
Salt River Summit 7640 .0 .0 * .5 .7 71
Snake River Station 6920 .0 .0 * 1.3 .8 162
Somsen Ranch 6800 -M .0 * 2.0 .8 250
Spring Creek Divide 9000 .1 .2 50* 1.4 .7 200
Thumb Divide 7980 .2 .0 * .7 .9 78
Togwotee Pass 9580 1.0 .8 125* 1.5 1.2 125
Triple Peak 8500 -M .0 * 1.1 .8 138
Two Ocean Plateau 9240 1.3 1.0 130* 2.2 1.2 183
Willow Creek 8080 .1 .0 * 3.1 1.4 221
Younts Peak 8350 -M .0 * -M .7 *
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Basin Index (%) 192* 178
MADISON HEADWATERS IN WYOMING
Black Bear 8170 .9 .8 112* 2.2 1.2 183
Canyon 7870 .1 -M * .9 -M *
Madison Plateau 7750 .0 .0 * 1.2 1.2 100
West Yellowstone 6700 .1 .0 * .8 .7 114
Whiskey Creek 6800 .0 .0 * 1.3 .8 162
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Basin Index (%) 125* 141
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 1.2 .8 150* 1.7 .8 212
Canyon 7870 .1 -M * .9 -M *
Evening Star 9200 1.9 .7 271* 3.2 1.4 229
Fisher Creek 9100 .4 .9 44* 1.5 1.2 125
Monument Peak 8850 1.0 .6 167* 2.2 1.2 183
Northeast Entrance 7350 .0 .0 * .8 .7 114
Parker Peak 9400 1.3 1.0 130* 2.4 1.2 200
Sylvan Lake 8420 .5 .2 250* 3.0 1.4 214
Thumb Divide 7980 .2 .0 * .7 .9 78
Two Ocean Plateau 9240 1.3 1.0 130* 2.2 1.2 183
White Mill 8700 .3 .6 50* 1.3 .9 144
Wolverine 7650 .6 .0 * 1.8 .8 225
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Basin Index (%) 150* 178
WIND RIVER
Burroughs Creek 8750 .0 -M * 1.0 -M *
Castle Creek 8400 .7 .0 * 1.2 .6 200
Cold Springs 9630 1.4 .0 * 1.8 .7 257
Deer Park 9700 1.0 .5 200* 1.9 1.1 173
Hobbs Park 10100 2.8 .5 560* -M .8 *
Kirwin 9550 -M .6 * -M 1.0 *
Little Warm 9370 1.0 .0 * 1.8 .7 257
South Pass 9040 .8 .0 * 1.5 .8 188
St. Lawrence Alt 8620 1.2 -M * 1.9 -M *
Togwotee Pass 9580 1.0 .8 125* 1.5 1.2 125
Townsend Creek 8700 1.7 .0 * 2.8 .8 350
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Basin Index (%) 578* 212
BIGHORN BASIN
Bald Mtn. 9380 -M 1.4 * -M 1.4 *
Bear Trap Meadow 8200 1.4 .0 * -M .9 *
Bone Springs Div 9350 1.5 .8 188* 2.6 1.2 217
Grave Springs 8550 .6 .2 300* 1.8 .7 257
Kirwin 9550 -M .6 * -M 1.0 *
Marquette 8760 -M .1 * -M 1.1 *
Middle Powder 7760 .8 .3 267* 2.8 .9 311
Owl Creek 8975 1.0 .4 250* 1.6 .8 200
Powder River Pass 9480 -M .2 * -M 1.0 *
Shell Creek 9580 2.1 1.2 175* 2.8 1.1 255
Timber Creek 7950 -M .0 * 4.1 1.0 410
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Basin Index (%) 255* 275
SHOSHONE RIVER
Blackwater 9780 -M .9 * 2.5 1.3 192
Evening Star 9200 1.9 .7 271* 3.2 1.4 229
Marquette 8760 -M .1 * -M 1.1 *
Sylvan Lake 8420 .5 .2 250* 3.0 1.4 214
Sylvan Road 7120 .0 .0 * 2.1 .9 233
Younts Peak 8350 -M .0 * -M .7 *
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Basin Index (%) 267* 216
POWDER RIVER
Bear Trap Meadow 8200 1.4 .0 * -M .9 *
Cloud Peak Reservoir 9860 -M .5 * -M 1.3 *
Grave Springs 8550 .6 .2 300* 1.8 .7 257
Hansen Sawmill 8360 -M .0 * -M .9 *
Middle Powder 7760 .8 .3 267* 2.8 .9 311
Powder River Pass 9480 -M .2 * -M 1.0 *
Soldier Park 8720 2.7 .1 2700* 3.2 1.0 320
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Basin Index (%) 917* 300*
TONGUE RIVER
Big Goose 7990 -M .2 * -M 1.2 *
Bone Springs Div 9350 1.5 .8 188* 2.6 1.2 217
Burgess Junction 7880 -M .3 * -M 1.1 *
Dome Lake 8880 -M .4 * -M 1.1 *
Little Goose 8870 3.1 .4 775* 4.3 1.3 331
Sucker Creek 8880 -M .5 * -M 1.0 *
Tie Creek 6870 -M .0 * -M 1.0 *
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Basin Index (%) 383* 276*
BELLE FOURCHE
Blind Park 6890 .3 .0 * 1.6 .8 200
Cole Canyon 5910 .0 .0 * 1.0 .8 125
North Rapid Creek 6130 .0 .0 * 2.2 .6 367
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Basin Index (%) * 218
CHEYENNE RIVER BASIN
Blind Park 6890 .3 .0 * 1.6 .8 200
North Rapid Creek 6130 .0 .0 * 2.2 .6 367
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Basin Index (%) * 271
UPPER N. PLATTE
Arapaho Ridge 10976 .8 .6 133* 1.1 1.0 110
Blackhall Mtn 9839 1.5 .8 188* 2.2 1.4 157
Cinnabar Park 9707 .2 .3 67* .9 .8 112
Columbine 9167 .5 .0 * .9 1.2 75
Divide Peak 8730 1.3 .0 * 2.6 1.4 186
Joe Wright 10158 1.2 .4 300* 1.8 1.5 120
Laprele Creek 8390 1.8 .0 * 2.5 .6 417
Med Bow 10512 1.2 -M * 2.1 -M *
Never Summer 10323 1.3 .8 162* 1.2 1.2 100
North French Creek 10153 .9 .6 150* 1.7 1.4 121
Old Battle 9860 .8 .6 133* 1.6 1.4 114
Rawah 9069 1.2 .2 600* 1.6 1.2 133
Sage Creek Basin 7850 .7 .0 * 1.4 .9 156
Sand Lake 10098 1.7 .7 243* 1.8 1.2 150
South Brush Creek 8495 .6 .0 * 1.1 .8 138
Tower 10620 1.9 .9 211* 1.7 1.6 106
Webber Springs 9260 .6 .0 * 1.2 1.2 100
Whiskey Park 9020 .7 .0 * 1.4 1.3 108
Willow Creek Pass 9523 .9 .0 * 1.1 .8 138
Zirkel 9338 .6 .0 * 1.2 1.6 75
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Basin Index (%) 325* 129
SWEETWATER
Deer Park 9700 1.0 .5 200* 1.9 1.1 173
Larsen Creek 9000 -M .0 * 1.1 .7 157
South Pass 9040 .8 .0 * 1.5 .8 188
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Basin Index (%) 360* 173
LOWER N. PLATTE
Casper Mtn. 7920 4.2 .2 2100* 4.9 .9 544
Laprele Creek 8390 1.8 .0 * 2.5 .6 417
Reno Hill 8430 2.5 .4 625* 3.5 1.0 350
Windy Peak 7915 1.5 .0 * 1.6 .6 267
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Basin Index (%) 1667* 403
LARAMIE RIVER
Brooklyn Lake 10250 .5 .2 250* .9 .8 112
Cinnabar Park 9707 .2 .3 67* .9 .8 112
Crow Creek 8335 .6 .0 * 1.5 .6 250
Deadman Hill 10239 1.5 .6 250* 1.3 .8 162
Rawah 9069 1.2 .2 600* 1.6 1.2 133
Roach 9740 .9 .0 * 1.2 .9 133
Windy Peak 7915 1.5 .0 * 1.6 .6 267
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Basin Index (%) 492* 158
S. PLATTE
Crow Creek 8335 .6 .0 * 1.5 .6 250
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Basin Index (%) * 250
LITTLE SNAKE RIVER
Battle Mountain 7498 .6 .0 * 1.5 .8 188
Divide Peak 8730 1.3 .0 * 2.6 1.4 186
Elk River 8739 .8 .0 * 1.1 1.1 100
Elkhead Divide 8800 .5 -M * 1.2 -M *
Little Snake River 8928 .4 .0 * 1.8 1.7 106
Old Battle 9860 .8 .6 133* 1.6 1.4 114
Sage Creek Basin 7850 .7 .0 * 1.4 .9 156
Sandstone RS 8152 .6 .0 * 1.2 .9 133
Whiskey Park 9020 .7 .0 * 1.4 1.3 108
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Basin Index (%) 983* 133
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .2 * 1.2 .8 150
Blind Bull Sum 8650 -M .1 * 1.0 .8 125
East Rim Divide 7930 -M .0 * .7 .4 175
Elkhart Park G.S. 9400 .0 .0 * 1.9 1.0 190
Gros Ventre Summit 8750 .6 .1 600* 1.8 .8 225
Gunsight Pass 9820 1.6 .0 * 2.8 .8 350
Indian Creek 9425 .5 .2 250* 1.4 .8 175
Kendall R.S. 7740 .0 .0 * 1.5 .5 300
Larsen Creek 9000 -M .0 * 1.1 .7 157
Loomis Park 8240 .2 .0 * 1.1 .6 183
New Fork Lake 8340 -M .0 * .0 .4 0
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * .5 .5 100
Spring Creek Divide 9000 .1 .2 50* 1.4 .7 200
Triple Peak 8500 -M .0 * 1.1 .8 138
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Basin Index (%) 600* 182
LOWER GREEN RIVER
Blacks Fork Jct 8869 .2 -M * 1.0 -M *
Buck Pasture 9632 .6 -M * 1.8 -M *
EF Blacks Fork GS 9360 .5 -M * 1.4 -M *
Hams Fork 7840 -M .0 * .5 .4 125
Henrys Fork 10182 -M -M * 2.0 -M *
Hewinta 9500 .2 .0 * 1.3 .8 162
Hickerson Park 9122 .0 .0 * 2.3 .6 383
Hole-in-Rock 9168 .1 .0 * 1.6 .8 200
Indian Creek 9425 .5 .2 250* 1.4 .8 175
Kelley R.S. 8180 .3 .0 * 1.0 .6 167
Spirit Lk 10235 .5 .0 * 2.6 1.0 260
Steel Creek Park 10158 .8 .2 400* 1.8 .9 200
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Basin Index (%) 600* 212
UPPER BEAR RIVER
Bear River RS 8777 .1 -M * 1.0 -M *
Bug Lake 7987 .0 .0 * 1.2 .6 200
Burts Miller Ranch 8000 .2 .0 * 1.1 .3 367
Chalk Creek #1 9171 .7 .0 * 2.0 1.0 200
Giveout 6930 -M .0 * .6 .6 100
Hayden Fork 9130 .3 .0 * 2.1 1.0 210
Kelley R.S. 8180 .3 .0 * 1.0 .6 167
Lily Lake 9133 .4 .0 * 1.6 1.0 160
Monte Cristo 8932 .4 .0 * 1.8 .8 225
Salt River Summit 7640 .0 .0 * .5 .7 71
Spring Creek Divide 9000 .1 .2 50* 1.4 .7 200
Trial Lake 9992 .3 .0 * 1.7 .8 212
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Basin Index (%) 1350* 185
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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.