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 THURSDAY: OCTOBER 20 , 2016
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
Base Camp 7030 .9 .0 * 5.3 1.2 442
Black Bear 8170 1.8 1.5 120* 6.4 2.3 278
Blind Bull Sum 8650 2.4 .4 600* 4.1 1.3 315
Cottonwood Creek 7670 2.3 .0 * -M 1.6 *
East Rim Divide 7930 .6 .0 * 2.9 .8 362
Grand Targhee 9260 8.0 3.0 267* 9.2 3.9 236
Granite Creek 6770 .5 .0 * 4.3 1.2 358
Grassy Lake 7265 1.5 .0 * 7.9 2.1 376
Gros Ventre Summit 8750 .7 .9 78* 3.3 1.1 300
Gunsight Pass 9820 1.0 .5 200* 3.9 1.4 279
Lewis Lake Divide 7850 1.6 .0 * 6.8 1.9 358
Phillips Bench 8200 1.2 .0 * 6.4 1.4 457
Salt River Summit 7760 1.2 .0 * 3.9 1.0 390
Snake River Station 6920 .6 .0 * 5.4 1.7 318
Spring Creek Divide 9000 2.6 .4 650* 5.3 1.3 408
Thumb Divide 7980 .8 .0 * 4.2 1.4 300
Togwotee Pass 9580 2.5 1.7 147* 4.5 1.6 281
Two Ocean Plateau 9240 4.9 1.9 258* 5.9 1.8 328
Willow Creek 8380 2.1 .0 * 7.4 2.2 336
Younts Peak 8350 -M .5 * -M 1.4 *
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Basin Index (%) 361* 328
MADISON-GALLATIN
Black Bear 8170 1.8 1.5 120* 6.4 2.3 278
Canyon 7870 .6 .2 300* 3.6 1.3 277
Madison Plateau 7750 1.0 .5 200* 5.7 1.7 335
West Yellowstone 6700 .0 .0 * 3.6 1.3 277
Whiskey Creek 6800 .2 .0 * 3.5 1.4 250
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Basin Index (%) 164* 285
YELLOWSTONE
Beartooth Lake 9360 1.5 1.5 100* 2.4 1.4 171
Burnt Mtn 5880 .0 .0 * 2.0 2.6 77
Canyon 7870 .6 .2 300* 3.6 1.3 277
Cole Creek 7850 .0 1.6 0* 1.5 2.2 68
Evening Star 9200 3.7 1.2 308* 6.9 2.0 345
Fisher Creek 9100 2.6 1.4 186* 5.4 2.2 245
Northeast Entrance 7350 .2 .0 * 2.9 1.2 242
Parker Peak 9400 3.5 1.4 250* 5.6 1.8 311
Sylvan Lake 8420 2.9 .8 362* 8.0 2.0 400
Thumb Divide 7980 .8 .0 * 4.2 1.4 300
Two Ocean Plateau 9240 4.9 1.9 258* 5.9 1.8 328
White Mill 8700 2.0 1.2 167* 3.3 1.8 183
Wolverine 7650 .9 .0 * 3.4 1.3 262
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Basin Index (%) 211* 240
WIND RIVER
Burroughs Creek 8750 .0 -M * 1.8 -M *
Castle Creek 8400 -M -M * 1.5 -M *
Cold Springs 9630 .5 .0 * 1.6 1.2 133
Deer Park 9700 1.1 1.0 110* 2.6 1.7 153
Hobbs Park 10100 1.6 1.0 160* 2.4 1.4 171
Kirwin 9550 .6 .8 75* 1.7 1.2 142
Little Warm 9370 .8 .5 160* 2.7 1.2 225
Owl Creek 8975 .0 .3 0* 1.0 .9 111
South Pass 9040 .7 .2 350* 1.7 1.3 131
St. Lawrence Alt 8620 .0 .0 * 1.9 1.1 173
Togwotee Pass 9580 2.5 1.7 147* 4.5 1.6 281
Townsend Creek 8700 .6 .0 * 1.7 1.4 121
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Basin Index (%) 153* 168
BIGHORN BASIN
Bald Mtn. 9380 2.7 2.0 135* 2.0 1.8 111
Bear Trap Meadow 8200 .4 .2 200* 1.6 1.2 133
Bone Springs Div 9350 1.2 1.6 75* 2.1 1.8 117
Grave Springs 8550 .5 .3 167* 1.7 1.5 113
Kirwin 9550 .6 .8 75* 1.7 1.2 142
Marquette 8760 .2 -M * 1.5 -M *
Middle Powder 7760 .4 .4 100* 1.5 1.7 88
Owl Creek 8975 .0 .3 0* 1.0 .9 111
Powder River Pass 9480 1.1 .6 183* 2.3 1.4 164
Shell Creek 9580 3.0 2.0 150 2.6 1.6 162
Timber Creek 7950 .0 .0 * 1.0 1.4 71
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Basin Index (%) 121* 121
SHOSHONE RIVER
Blackwater 9780 4.6 1.6 288* 6.4 1.9 337
Evening Star 9200 3.7 1.2 308* 6.9 2.0 345
Marquette 8760 .2 -M * 1.5 -M *
Sylvan Road 7120 .7 .0 * 6.0 1.6 375
Younts Peak 8350 -M .5 * -M 1.4 *
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Basin Index (%) 321* 351
POWDER RIVER
Bear Trap Meadow 8200 .4 .2 200* 1.6 1.2 133
Cloud Peak Reservoir 9860 .5 1.0 50* 1.8 1.9 95
Grave Springs 8550 .5 .3 167* 1.7 1.5 113
Hansen Sawmill 8360 .2 .0 * .9 1.3 69
Middle Powder 7760 .4 .4 100* 1.5 1.7 88
Powder River Pass 9480 1.1 .6 183* 2.3 1.4 164
Soldier Park 8720 -M -M * 1.4 -M *
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Basin Index (%) 124* 109
TONGUE RIVER
Big Goose 7990 .0 .5 0* .6 1.8 33
Bone Springs Div 9350 1.2 1.6 75* 2.1 1.8 117
Burgess Junction 7880 .0 .6 0* .9 1.6 56
Dome Lake 8880 .0 1.0 0* 1.3 1.8 72
Little Goose 8870 -M -M * 1.4 -M *
Sucker Creek 8880 .1 .8 12* .7 1.8 39
Tie Creek 6870 .0 .0 * 1.1 1.9 58
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Basin Index (%) 29* 63
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .5 1.3 38
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Basin Index (%) * 38
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.5 1.6 94
North Rapid Creek 6130 .0 .0 * .7 1.4 50
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Basin Index (%) * 73
UPPER N. PLATTE
Arapaho Ridge 10960 1.0 1.5 67* 2.0 1.9 105
Blackhall Mtn 9820 .9 -M * 2.4 -M *
Columbine 9160 .0 .0 * 2.5 1.7 147
Divide Peak 8880 1.0 .5 200* 1.3 2.0 65
Joe Wright 10120 .3 .8 38* 2.7 2.2 123
Laprele Creek 8375 .0 .0 * -M 1.2 *
Med Bow 10500 2.2 -M * 3.4 -M *
North French Creek 10130 1.1 1.2 92* 2.1 2.1 100
Never Summer 10280 .8 1.0 80* 2.0 -M *
Old Battle 10000 1.2 1.3 92* 1.4 2.7 52
Rawah 9020 .4 .0 * 1.9 1.4 136
Sage Creek Basin 7850 .0 .0 * .8 1.3 62
Sand Lake 10050 1.9 1.4 136* 1.7 2.0 85
South Brush Creek 8440 .3 .0 * 1.0 1.5 67
Tower 10500 1.5 1.7 88* 2.1 2.7 78
Webber Springs 9250 .4 .2 200* 1.0 2.0 50
Willow Creek Pass 9540 .2 .3 67* 1.3 1.2 108
Zirkel 9340 -M .0 * 2.8 2.6 108
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Basin Index (%) 102* 90
SWEETWATER
Deer Park 9700 1.1 1.0 110* 2.6 1.7 153
Larsen Creek 9000 .7 .0 * 3.6 -M *
South Pass 9040 .7 .2 350* 1.7 1.3 131
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Basin Index (%) 208* 143
LOWER N. PLATTE
Casper Mtn. 7900 .0 .2 0* .4 1.8 22
Laprele Creek 8375 .0 .0 * -M 1.2 *
Reno Hill 8400 -M .6 * -M 1.6 *
Windy Peak 7900 .0 .0 * .2 1.1 18
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Basin Index (%) 0* 21
LARAMIE RIVER
Brooklyn Lake 10240 .7 .3 233* .8 1.5 53
Cinnabar Park 9574 .9 .5 180* 1.7 1.7 100
Crow Creek 8330 .0 .0 * .8 1.3 62
Deadman Hill 10220 1.1 1.1 100* 1.9 1.6 119
Rawah 9020 .4 .0 * 1.9 1.4 136
Roach 9700 .5 .3 167* 1.1 1.6 69
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Basin Index (%) 164* 90
S. PLATTE
Black Mountain 8920 .6 -M * 1.3 -M *
Crow Creek 8330 .0 .0 * .8 1.3 62
Deadman Hill 10220 1.1 1.1 100* 1.9 1.6 119
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Basin Index (%) 100* 93
LITTLE SNAKE RIVER
Battle Mountain 7440 .2 .0 * 1.3 1.1 118
Divide Peak 8880 1.0 .5 200* 1.3 2.0 65
Elk River 8700 .2 .0 * 1.8 1.6 112
Little Snake River 8915 .5 .3 167* 2.8 2.7 104
Old Battle 10000 1.2 1.3 92* 1.4 2.7 52
Sage Creek Basin 7850 .0 .0 * .8 1.3 62
Sandstone RS 8150 .6 .0 * .8 1.3 62
Whiskey Park 8950 .1 .1 100* 2.2 1.8 122
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Basin Index (%) 173* 86
UPPER GREEN RIVER
Big Sandy Opening 9080 1.5 .6 250* 3.7 1.1 336
Blind Bull Sum 8650 2.4 .4 600* 4.1 1.3 315
East Rim Divide 7930 .6 .0 * 2.9 .8 362
Elkhart Park G.S. 9400 1.2 .4 300* 3.6 1.2 300
Gros Ventre Summit 8750 .7 .9 78* 3.3 1.1 300
Gunsight Pass 9820 1.0 .5 200* 3.9 1.4 279
Kendall R.S. 7740 .4 .0 * 3.1 .9 344
Loomis Park 8240 .7 .0 * 3.8 1.0 380
New Fork Lake 8340 .7 .0 * 1.4 .8 175
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .9 .0 * 3.7 .9 411
Spring Creek Divide 9000 2.6 .4 650* 5.3 1.3 408
Triple Peak 8500 2.0 .2 1000* 5.9 1.4 421
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Basin Index (%) 432* 339
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * 1.2 -M *
Buck Pasture 9700 .1 -M * 1.9 -M *
EF Blacks Fork GS 9360 .4 -M * 1.6 -M *
Hams Fork 7840 .3 .0 * 2.7 .8 338
Hewinta 9519 -M .0 * 1.2 1.3 92
Hickerson Park 9145 .1 .0 * .8 1.1 73
Hole-in-Rock 9150 .0 .0 * 1.1 1.2 92
Indian Creek 9425 1.9 .8 238* 3.9 1.3 300
Kelley R.S. 8180 1.2 .0 * 3.4 1.1 309
Spirit Lk 10235 .1 -M * 1.3 -M *
Steel Creek Park 10200 .7 .6 117* 1.8 1.5 120
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Basin Index (%) 300* 180
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 1.1 -M *
Bug Lake 7950 1.1 .0 * 3.0 1.4 214
Burts Miller Ranch 8000 .0 -M * .6 -M *
Chalk Creek #1 8993 .6 .3 200* 2.0 1.9 105
Hayden Fork 9212 .2 .0 * 1.5 1.6 94
Kelley R.S. 8180 1.2 .0 * 3.4 1.1 309
Lily Lake 9156 .0 .0 * 1.2 1.5 80
Monte Cristo 8960 2.0 .0 * 3.3 1.7 194
Salt River Summit 7760 1.2 .0 * 3.9 1.0 390
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Basin Index (%) 2100* 179
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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.
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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.