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 WEDNESDAY: OCTOBER 12 , 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 .0 .0 * 2.8 .7 400
Black Bear 8170 .6 .5 120* 3.2 1.4 229
Blind Bull Sum 8650 .7 .1 700* 1.0 .7 143
Cottonwood Creek 7670 .2 .0 * 2.3 .9 256
East Rim Divide 7930 .0 .0 * 1.1 .5 220
Grand Targhee 9260 4.7 1.2 392* -M 2.2 *
Granite Creek 6770 .0 .0 * 1.9 .6 317
Grassy Lake 7265 .5 .0 * 3.8 1.2 317
Gros Ventre Summit 8750 .3 .3 100* 1.8 .6 300
Gunsight Pass 9820 .4 .0 * 2.2 .9 244
Lewis Lake Divide 7850 .0 .0 * 2.6 1.0 260
Phillips Bench 8200 .5 .0 * 3.1 .7 443
Salt River Summit 7760 .0 .0 * 1.4 .6 233
Snake River Station 6920 .2 .0 * 2.7 .9 300
Spring Creek Divide 9000 .4 .0 * 1.8 .7 257
Thumb Divide 7980 .5 .0 * 1.8 .9 200
Togwotee Pass 9580 1.3 .7 186* 2.7 .9 300
Two Ocean Plateau 9240 2.1 .9 233* -M 1.0 *
Willow Creek 8380 .0 .0 * 3.0 1.2 250
Younts Peak 8350 .0 .4 0* .5 .8 62
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Basin Index (%) 302* 261
MADISON-GALLATIN
Black Bear 8170 .6 .5 120* 3.2 1.4 229
Canyon 7870 .0 .0 * 1.8 .7 257
Madison Plateau 7750 .0 .3 0* 2.3 1.0 230
West Yellowstone 6700 .0 .0 * 1.5 .8 188
Whiskey Creek 6800 .0 .0 * 1.6 .9 178
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Basin Index (%) 75* 217
YELLOWSTONE
Beartooth Lake 9360 .2 .9 22* 1.1 .8 138
Burnt Mtn 5880 .5 .0 * 1.9 2.1 90
Canyon 7870 .0 .0 * 1.8 .7 257
Cole Creek 7850 .5 .8 62* 1.3 1.4 93
Evening Star 9200 1.4 .6 233* 3.3 1.2 275
Fisher Creek 9100 .4 .7 57* 1.7 1.2 142
Northeast Entrance 7350 .1 .0 * 1.5 .7 214
Parker Peak 9400 .7 .8 88* 2.5 1.1 227
Sylvan Lake 8420 1.9 .3 633* 4.3 1.1 391
Thumb Divide 7980 .5 .0 * 1.8 .9 200
Two Ocean Plateau 9240 2.1 .9 233* -M 1.0 *
White Mill 8700 .0 .6 0* 1.0 1.0 100
Wolverine 7650 .1 .0 * 1.3 .8 162
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Basin Index (%) 150* 181
WIND RIVER
Burroughs Creek 8750 .0 -M * 1.0 -M *
Castle Creek 8400 .0 -M * .8 -M *
Cold Springs 9630 .0 .0 * 1.0 .8 125
Deer Park 9700 .2 .5 40* 1.0 1.2 83
Hobbs Park 10100 .0 .4 0* .6 .9 67
Kirwin 9550 .0 .4 0* .8 .8 100
Little Warm 9370 .4 .2 200* 1.6 .7 229
Owl Creek 8975 .0 .0 * .8 .6 133
South Pass 9040 .0 .0 * .9 .8 112
St. Lawrence Alt 8620 .0 .0 * .5 .7 71
Togwotee Pass 9580 1.3 .7 186* 2.7 .9 300
Townsend Creek 8700 .0 .0 * .9 .9 100
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Basin Index (%) 86* 130
BIGHORN BASIN
Bald Mtn. 9380 1.8 1.4 129* 1.3 1.2 108
Bear Trap Meadow 8200 .0 .0 * 1.0 .7 143
Bone Springs Div 9350 .7 1.0 70* 1.4 1.2 117
Grave Springs 8550 .2 .0 * 1.3 1.0 130
Kirwin 9550 .0 .4 0* .8 .8 100
Marquette 8760 .2 -M * 1.3 -M *
Middle Powder 7760 1.6 .2 800* .9 1.0 90
Owl Creek 8975 .0 .0 * .8 .6 133
Powder River Pass 9480 .9 .1 900* 1.5 .9 167
Shell Creek 9580 2.1 1.3 162* 1.7 1.1 155
Timber Creek 7950 .1 .0 * .8 1.0 80
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Basin Index (%) 168* 121
SHOSHONE RIVER
Blackwater 9780 2.4 .9 267* 3.9 1.1 355
Evening Star 9200 1.4 .6 233* 3.3 1.2 275
Marquette 8760 .2 -M * 1.3 -M *
Sylvan Road 7120 .2 .0 * 3.2 .9 356
Younts Peak 8350 .0 .4 0* .5 .8 62
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Basin Index (%) 211* 272
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 1.0 .7 143
Cloud Peak Reservoir 9860 .0 .2 0* 1.0 1.1 91
Grave Springs 8550 .2 .0 * 1.3 1.0 130
Hansen Sawmill 8360 .0 .0 * .6 .8 75
Middle Powder 7760 1.6 .2 800* .9 1.0 90
Powder River Pass 9480 .9 .1 900* 1.5 .9 167
Soldier Park 8720 .0 -M * 1.1 -M *
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Basin Index (%) 540* 115
TONGUE RIVER
Big Goose 7990 .0 .0 * .4 1.1 36
Bone Springs Div 9350 .7 1.0 70* 1.4 1.2 117
Burgess Junction 7880 .0 .3 0* .6 1.0 60
Dome Lake 8880 .0 .5 0* .7 1.1 64
Little Goose 8870 .0 -M * 1.0 -M *
Sucker Creek 8880 .2 .3 67* .3 1.1 27
Tie Creek 6870 .0 .0 * .8 1.2 67
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Basin Index (%) 43* 63
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .4 1.0 40
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Basin Index (%) * 40
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.3 1.0 130
North Rapid Creek 6130 .0 .0 * .5 .9 56
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Basin Index (%) * 95
UPPER N. PLATTE
Arapaho Ridge 10960 1.3 .3 433* 1.7 1.1 155
Blackhall Mtn 9820 .3 -M * 1.3 -M *
Columbine 9160 .2 .0 * 2.0 1.1 182
Divide Peak 8880 .0 .0 * .3 1.3 23
Joe Wright 10120 .5 .2 250* 2.0 1.3 154
Laprele Creek 8375 .0 .0 * .1 .7 14
Med Bow 10500 1.2 -M * 1.6 -M *
North French Creek 10130 .0 .4 0* .9 1.2 75
Never Summer 10280 1.2 .4 300* 1.5 -M *
Old Battle 10000 1.0 .5 200* .7 1.6 44
Rawah 9020 .3 .0 * 1.3 .9 144
Sage Creek Basin 7850 .0 .0 * .5 1.0 50
Sand Lake 10050 .8 .5 160* .1 1.2 8
South Brush Creek 8440 .1 .0 * .6 1.0 60
Tower 10500 1.2 .8 150* 1.2 1.6 75
Webber Springs 9250 .0 .0 * 1.3 1.3 100
Willow Creek Pass 9540 .3 .0 * 1.1 .7 157
Zirkel 9340 .2 .0 * 1.6 1.8 89
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Basin Index (%) 229* 87
SWEETWATER
Deer Park 9700 .2 .5 40* 1.0 1.2 83
Larsen Creek 9000 .1 .0 * 2.0 -M *
South Pass 9040 .0 .0 * .9 .8 112
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Basin Index (%) 60* 95
LOWER N. PLATTE
Casper Mtn. 7900 .0 .1 0* .3 1.0 30
Laprele Creek 8375 .0 .0 * .1 .7 14
Reno Hill 8400 .0 .0 * .6 1.0 60
Windy Peak 7900 .0 .0 * .2 .7 29
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Basin Index (%) 0* 35
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .8 *
Cinnabar Park 9574 .2 .0 * .7 1.1 64
Crow Creek 8330 -M .0 * .3 .7 43
Deadman Hill 10220 .4 .1 400* .9 .9 100
Rawah 9020 .3 .0 * 1.3 .9 144
Roach 9700 .2 .0 * .8 .9 89
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Basin Index (%) 1100* 89
S. PLATTE
Black Mountain 8920 .1 -M * .4 -M *
Crow Creek 8330 -M .0 * .3 .7 43
Deadman Hill 10220 .4 .1 400* .9 .9 100
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Basin Index (%) 400* 75
LITTLE SNAKE RIVER
Battle Mountain 7440 .2 .0 * .7 .8 88
Divide Peak 8880 .0 .0 * .3 1.3 23
Elk River 8700 .1 .0 * 1.1 1.0 110
Little Snake River 8915 .2 .0 * 1.7 1.8 94
Old Battle 10000 1.0 .5 200* .7 1.6 44
Sage Creek Basin 7850 .0 .0 * .5 1.0 50
Sandstone RS 8150 1.0 .0 * .2 .9 22
Whiskey Park 8950 .0 .0 * 1.3 1.2 108
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Basin Index (%) 500* 68
UPPER GREEN RIVER
Big Sandy Opening 9080 .7 .0 * 2.0 .7 286
Blind Bull Sum 8650 .7 .1 700* 1.0 .7 143
East Rim Divide 7930 .0 .0 * 1.1 .5 220
Elkhart Park G.S. 9400 .8 .0 * 2.1 .7 300
Gros Ventre Summit 8750 .3 .3 100* 1.8 .6 300
Gunsight Pass 9820 .4 .0 * 2.2 .9 244
Kendall R.S. 7740 .0 .0 * 1.3 .5 260
Loomis Park 8240 .0 .0 * 1.7 .6 283
New Fork Lake 8340 .0 .0 * .6 .5 120
Pocket Creek 9360 .8 -M * 2.0 -M *
Snider Basin 8060 .1 .0 * 1.3 .4 325
Spring Creek Divide 9000 .4 .0 * 1.8 .7 257
Triple Peak 8500 .1 .0 * 2.0 .7 286
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Basin Index (%) 875* 252
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * .4 -M *
Buck Pasture 9700 .0 -M * .9 -M *
EF Blacks Fork GS 9360 .0 -M * .8 -M *
Hams Fork 7840 .0 .0 * .8 .5 160
Hewinta 9519 .0 .0 * .6 .8 75
Hickerson Park 9145 .0 .0 * .6 .7 86
Hole-in-Rock 9150 .0 .0 * .7 .8 88
Indian Creek 9425 .0 .3 0* 1.4 .7 200
Kelley R.S. 8180 .1 .0 * 1.2 .6 200
Spirit Lk 10235 .0 -M * 1.0 -M *
Steel Creek Park 10200 .0 .2 0* .8 1.0 80
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Basin Index (%) 20* 120
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .4 -M *
Bug Lake 7950 .0 .0 * .3 .8 38
Burts Miller Ranch 8000 .0 -M * .3 -M *
Chalk Creek #1 8993 .0 .0 * 1.0 1.1 91
Hayden Fork 9212 .0 .0 * .7 1.0 70
Kelley R.S. 8180 .1 .0 * 1.2 .6 200
Lily Lake 9156 .0 .0 * .4 1.0 40
Monte Cristo 8960 .1 .0 * .5 1.0 50
Salt River Summit 7760 .0 .0 * 1.4 .6 233
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Basin Index (%) * 90
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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.
