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 SATURDAY: OCTOBER 14 , 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 1.0 140
Blind Bull Sum 8650 .0 .2 0* 1.0 .8 125
Cottonwood Creek 7670 .1 .0 * 2.7 1.2 225
East Rim Divide 7930 -M .0 * .8 .4 200
Grand Targhee 9260 1.4 1.5 93* 3.4 2.4 142
Granite Creek 6770 .0 .0 * 1.0 .6 167
Grassy Lake 7265 -M .0 * 2.1 1.3 162
Gros Ventre Summit 8750 .6 .1 600* 1.8 .8 225
Gunsight Pass 9820 1.6 .0 * 2.8 .9 311
Lewis Lake Divide 7850 .1 .0 * 1.2 1.3 92
Loomis Park 8240 .2 .0 * 1.2 .7 171
Phillips Bench 8200 .2 .0 * 1.8 1.1 164
Salt River Summit 7640 -M .0 * .6 .8 75
Snake River Station 6920 .0 .0 * 1.4 1.0 140
Somsen Ranch 6800 -M .0 * 2.0 .9 222
Spring Creek Divide 9000 .0 .2 0* 1.4 .8 175
Thumb Divide 7980 .2 .0 * .8 1.0 80
Togwotee Pass 9580 .9 1.0 90* 1.6 1.3 123
Triple Peak 8500 -M .0 * 1.2 .9 133
Two Ocean Plateau 9240 1.3 1.2 108* 2.3 1.4 164
Willow Creek 8080 -M .0 * 3.1 1.4 221
Younts Peak 8350 -M .2 * -M .9 *
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Basin Index (%) 157* 162
MADISON HEADWATERS IN WYOMING
Black Bear 8170 .8 .8 100* 2.3 1.7 135
Canyon 7870 .1 -M * .9 -M *
Madison Plateau 7750 .0 .2 0* 1.3 1.2 108
West Yellowstone 6700 .1 .0 * .8 .8 100
Whiskey Creek 6800 .0 .0 * 1.3 1.0 130
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Basin Index (%) 90* 121
YELLOWSTONE HEADWATERS IN WYOMING
Beartooth Lake 9360 1.2 1.0 120* 1.6 1.0 160
Canyon 7870 .1 -M * .9 -M *
Evening Star 9200 1.8 .8 225* 3.2 1.6 200
Fisher Creek 9100 .3 .9 33* 1.5 1.4 107
Monument Peak 8850 1.0 .6 167* 2.2 1.4 157
Northeast Entrance 7350 .0 .0 * .8 .7 114
Parker Peak 9400 1.2 1.0 120* 2.5 1.4 179
Sylvan Lake 8420 .3 .4 75* 3.0 1.5 200
Thumb Divide 7980 .2 .0 * .8 1.0 80
Two Ocean Plateau 9240 1.3 1.2 108* 2.3 1.4 164
White Mill 8700 .3 .6 50* 1.3 1.0 130
Wolverine 7650 .2 .0 * 1.8 .9 200
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Basin Index (%) 120* 158
WIND RIVER
Burroughs Creek 8750 .0 -M * 1.0 -M *
Castle Creek 8400 .6 .0 * 1.3 .6 217
Cold Springs 9630 1.3 .0 * 1.8 .7 257
Deer Park 9700 1.0 .5 200* 1.8 1.2 150
Hobbs Park 10100 2.7 .6 450* 3.4 .8 425
Kirwin 9550 2.6 .6 433* 3.3 1.0 330
Little Warm 9370 1.0 .0 * 1.8 .8 225
South Pass 9040 .8 .1 800* 1.6 1.0 160
St. Lawrence Alt 8620 .9 -M * 1.9 -M *
Togwotee Pass 9580 .9 1.0 90* 1.6 1.3 123
Townsend Creek 8700 1.5 .0 * 2.9 .9 322
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Basin Index (%) 443* 235
BIGHORN BASIN
Bald Mtn. 9380 1.7 1.5 113* 2.2 1.4 157
Bear Trap Meadow 8200 1.2 .0 * 2.6 1.0 260
Bone Springs Div 9350 1.2 1.0 120* 2.6 1.3 200
Grave Springs 8550 .5 .0 * 1.8 .8 225
Kirwin 9550 2.6 .6 433* 3.3 1.0 330
Marquette 8760 -M .1 * -M 1.2 *
Middle Powder 7760 .8 .3 267* 2.9 1.0 290
Owl Creek 8975 1.0 .0 * 1.8 .8 225
Powder River Pass 9480 1.0 .4 250* 2.2 1.1 200
Shell Creek 9580 2.0 1.4 143* 2.8 1.2 233
Timber Creek 7950 -M .0 * 4.2 1.0 420
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Basin Index (%) 231* 249
SHOSHONE RIVER
Blackwater 9780 2.2 1.1 200* 2.5 1.5 167
Evening Star 9200 1.8 .8 225* 3.2 1.6 200
Marquette 8760 -M .1 * -M 1.2 *
Sylvan Lake 8420 .3 .4 75* 3.0 1.5 200
Sylvan Road 7120 .0 .0 * 2.1 1.0 210
Younts Peak 8350 -M .2 * -M .9 *
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Basin Index (%) 187* 193
POWDER RIVER
Bear Trap Meadow 8200 1.2 .0 * 2.6 1.0 260
Cloud Peak Reservoir 9860 3.9 .6 650* 4.9 1.4 350
Grave Springs 8550 .5 .0 * 1.8 .8 225
Hansen Sawmill 8360 2.4 .0 * 2.5 .9 278
Middle Powder 7760 .8 .3 267* 2.9 1.0 290
Powder River Pass 9480 1.0 .4 250* 2.2 1.1 200
Soldier Park 8720 2.5 .0 * 3.3 1.2 275
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Basin Index (%) 946* 273
TONGUE RIVER
Big Goose 7990 -M .4 * 3.9 1.2 325
Bone Springs Div 9350 1.2 1.0 120* 2.6 1.3 200
Burgess Junction 7880 2.1 .4 525* 4.1 1.2 342
Dome Lake 8880 2.5 .4 625* 3.7 1.2 308
Little Goose 8870 3.0 .4 750* 4.2 1.4 300
Sucker Creek 8880 2.9 .6 483* 4.2 1.1 382
Tie Creek 6870 -M .0 * -M 1.0 *
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Basin Index (%) 418* 307
BELLE FOURCHE
Blind Park 6890 .3 .0 * 1.7 1.0 170
Cole Canyon 5910 .0 .0 * 1.2 .8 150
North Rapid Creek 6130 .0 .0 * 2.3 .7 329
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Basin Index (%) * 208
CHEYENNE RIVER BASIN
Blind Park 6890 .3 .0 * 1.7 1.0 170
North Rapid Creek 6130 .0 .0 * 2.3 .7 329
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Basin Index (%) * 235
UPPER N. PLATTE
Arapaho Ridge 10976 .7 .7 100* 1.2 1.1 109
Blackhall Mtn 9839 1.4 .8 175* 2.3 1.4 164
Cinnabar Park 9707 .2 .3 67* 1.0 .9 111
Columbine 9167 .3 .0 * 1.0 1.4 71
Divide Peak 8730 1.2 .0 * 2.7 1.4 193
Joe Wright 10158 1.2 .4 300* 1.8 1.6 112
Laprele Creek 8390 1.7 .0 * 2.7 .7 386
Med Bow 10512 1.2 -M * 2.2 -M *
Never Summer 10323 1.3 .8 162* 1.3 1.4 93
North French Creek 10153 .8 .6 133* 1.8 1.4 129
Old Battle 9860 .8 .6 133* 1.7 1.5 113
Rawah 9069 1.1 .0 * 1.7 1.4 121
Sage Creek Basin 7850 .6 .0 * 1.5 1.0 150
Sand Lake 10098 1.7 .8 212* 1.8 1.2 150
South Brush Creek 8495 .5 .0 * 1.2 .8 150
Tower 10620 1.9 .8 238* 2.1 1.9 111
Webber Springs 9260 .5 .0 * 1.1 1.2 92
Whiskey Park 9020 .6 .0 * 1.4 1.4 100
Willow Creek Pass 9523 .9 .0 * 1.1 .8 138
Zirkel 9338 .5 .0 * 1.1 1.7 65
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Basin Index (%) 309* 126
SWEETWATER
Deer Park 9700 1.0 .5 200* 1.8 1.2 150
Larsen Creek 9000 -M .0 * 1.1 .7 157
South Pass 9040 .8 .1 800* 1.6 1.0 160
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Basin Index (%) 300* 155
LOWER N. PLATTE
Casper Mtn. 7920 4.1 .2 2050* 5.4 1.0 540
Laprele Creek 8390 1.7 .0 * 2.7 .7 386
Reno Hill 8430 2.5 .2 1250* 4.2 1.0 420
Windy Peak 7915 1.4 .0 * 1.7 .6 283
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Basin Index (%) 2425* 424
LARAMIE RIVER
Brooklyn Lake 10250 .5 .0 * .9 .8 112
Cinnabar Park 9707 .2 .3 67* 1.0 .9 111
Crow Creek 8335 .4 .0 * 1.6 .7 229
Deadman Hill 10239 1.4 .6 233* 1.3 1.0 130
Rawah 9069 1.1 .0 * 1.7 1.4 121
Roach 9740 .8 .1 800* 1.2 1.0 120
Windy Peak 7915 1.4 .0 * 1.7 .6 283
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Basin Index (%) 580* 147
S. PLATTE
Crow Creek 8335 .4 .0 * 1.6 .7 229
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Basin Index (%) * 229
LITTLE SNAKE RIVER
Battle Mountain 7498 .4 .0 * 1.5 .9 167
Divide Peak 8730 1.2 .0 * 2.7 1.4 193
Elk River 8739 .8 .0 * 1.1 1.2 92
Elkhead Divide 8800 .4 -M * -M -M *
Little Snake River 8928 .2 .0 * 1.7 1.8 94
Old Battle 9860 .8 .6 133* 1.7 1.5 113
Sage Creek Basin 7850 .6 .0 * 1.5 1.0 150
Sandstone RS 8152 .5 .0 * 1.1 1.0 110
Whiskey Park 9020 .6 .0 * 1.4 1.4 100
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Basin Index (%) 850* 125
UPPER GREEN RIVER
Big Sandy Opening 9080 -M .2 * 1.2 1.0 120
Blind Bull Sum 8650 .0 .2 0* 1.0 .8 125
East Rim Divide 7930 -M .0 * .8 .4 200
Elkhart Park G.S. 9400 .0 .0 * 2.0 1.0 200
Gros Ventre Summit 8750 .6 .1 600* 1.8 .8 225
Gunsight Pass 9820 1.6 .0 * 2.8 .9 311
Indian Creek 9425 .5 .2 250* 1.4 .8 175
Kendall R.S. 7740 .1 .0 * 1.5 .5 300
Larsen Creek 9000 -M .0 * 1.1 .7 157
Loomis Park 8240 .2 .0 * 1.2 .7 171
New Fork Lake 8340 -M .0 * .2 .6 33
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 -M .0 * .5 .6 83
Spring Creek Divide 9000 .0 .2 0* 1.4 .8 175
Triple Peak 8500 -M .0 * 1.2 .9 133
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Basin Index (%) 429* 172
LOWER GREEN RIVER
Blacks Fork Jct 8869 .0 -M * 1.4 -M *
Buck Pasture 9632 .4 -M * 1.7 -M *
EF Blacks Fork GS 9360 .4 -M * 1.5 -M *
Hams Fork 7840 -M .0 * .5 .4 125
Henrys Fork 10182 -M -M * 2.0 -M *
Hewinta 9500 .0 .0 * 1.3 .9 144
Hickerson Park 9122 .0 .0 * 2.4 .6 400
Hole-in-Rock 9168 .0 .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 .4 .0 * 2.6 1.0 260
Steel Creek Park 10158 .8 .0 * 1.9 1.0 190
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Basin Index (%) 1000* 208
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 1.1 -M *
Bug Lake 7987 .3 .0 * 1.2 .6 200
Burts Miller Ranch 8000 .1 .0 * 1.1 .3 367
Chalk Creek #1 9171 .5 .0 * 2.0 1.2 167
Giveout 6930 -M .0 * .6 .6 100
Hayden Fork 9130 .0 .0 * 2.1 1.0 210
Kelley R.S. 8180 .3 .0 * 1.0 .6 167
Lily Lake 9133 .0 .0 * 1.6 1.1 145
Monte Cristo 8932 .1 .0 * 1.8 .8 225
Salt River Summit 7640 -M .0 * .6 .8 75
Spring Creek Divide 9000 .0 .2 0* 1.4 .8 175
Trial Lake 9992 .2 .0 * 1.8 .9 200
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Basin Index (%) 750* 175
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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.