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 13 , 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 .7 86* 3.2 1.5 213
Blind Bull Sum 8650 .7 .1 700* 1.0 .8 125
Cottonwood Creek 7670 .3 .0 * 2.3 1.0 230
East Rim Divide 7930 .0 .0 * 1.1 .5 220
Grand Targhee 9260 4.8 1.2 400* -M 2.4 *
Granite Creek 6770 .0 .0 * 1.9 .6 317
Grassy Lake 7265 .3 .0 * 3.7 1.3 285
Gros Ventre Summit 8750 .4 .3 133* 1.8 .7 257
Gunsight Pass 9820 .3 .0 * 2.3 .9 256
Lewis Lake Divide 7850 .0 .0 * 2.6 1.1 236
Phillips Bench 8200 .4 .0 * 3.1 .8 388
Salt River Summit 7760 .0 .0 * 1.4 .7 200
Snake River Station 6920 .1 .0 * 2.7 1.0 270
Spring Creek Divide 9000 .3 .0 * 1.8 .7 257
Thumb Divide 7980 .2 .0 * 2.0 1.0 200
Togwotee Pass 9580 1.4 .9 156* 2.7 .9 300
Two Ocean Plateau 9240 2.1 1.1 191* -M 1.1 *
Willow Creek 8380 .0 .0 * 2.9 1.3 223
Younts Peak 8350 .0 .4 0* .4 .9 44
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Basin Index (%) 253* 242
MADISON-GALLATIN
Black Bear 8170 .6 .7 86* 3.2 1.5 213
Canyon 7870 .0 .0 * 1.9 .8 238
Madison Plateau 7750 .0 .3 0* 2.4 1.1 218
West Yellowstone 6700 .0 .0 * 1.5 .9 167
Whiskey Creek 6800 .0 .0 * 1.5 1.0 150
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Basin Index (%) 60* 198
YELLOWSTONE
Beartooth Lake 9360 .5 1.0 50* 1.2 .9 133
Burnt Mtn 5880 .5 .0 * 1.9 2.2 86
Canyon 7870 .0 .0 * 1.9 .8 238
Cole Creek 7850 .7 .9 78* 1.4 1.4 100
Evening Star 9200 1.5 .7 214* 3.8 1.2 317
Fisher Creek 9100 .4 .8 50* 2.1 1.3 162
Northeast Entrance 7350 .1 .0 * 1.5 .8 188
Parker Peak 9400 1.0 .9 111* 2.6 1.2 217
Sylvan Lake 8420 1.8 .3 600* 4.4 1.2 367
Thumb Divide 7980 .2 .0 * 2.0 1.0 200
Two Ocean Plateau 9240 2.1 1.1 191* -M 1.1 *
White Mill 8700 .1 .7 14* 1.3 1.1 118
Wolverine 7650 .0 .0 * 1.7 .8 212
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Basin Index (%) 139* 186
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 .0 .5 0* 1.1 1.3 85
Hobbs Park 10100 .0 .5 0* .6 .9 67
Kirwin 9550 .0 .5 0* .8 .8 100
Little Warm 9370 .2 .1 200* 1.4 .7 200
Owl Creek 8975 .0 .0 * .9 .6 150
South Pass 9040 .0 .0 * .9 .9 100
St. Lawrence Alt 8620 .0 .0 * .4 .8 50
Togwotee Pass 9580 1.4 .9 156* 2.7 .9 300
Townsend Creek 8700 .0 .0 * .8 .9 89
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Basin Index (%) 64* 123
BIGHORN BASIN
Bald Mtn. 9380 1.9 1.4 136* 1.4 1.2 117
Bear Trap Meadow 8200 .2 .0 * 1.2 .7 171
Bone Springs Div 9350 .8 1.1 73* 1.5 1.2 125
Grave Springs 8550 .3 .0 * 1.5 1.1 136
Kirwin 9550 .0 .5 0* .8 .8 100
Marquette 8760 .2 -M * 1.4 -M *
Middle Powder 7760 1.7 .2 850* 1.1 1.1 100
Owl Creek 8975 .0 .0 * .9 .6 150
Powder River Pass 9480 .9 .1 900* 1.7 .9 189
Shell Creek 9580 2.1 1.3 162* 1.9 1.1 173
Timber Creek 7950 .1 .0 * .8 1.0 80
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Basin Index (%) 174* 132
SHOSHONE RIVER
Blackwater 9780 2.2 1.0 220* 3.9 1.2 325
Evening Star 9200 1.5 .7 214* 3.8 1.2 317
Marquette 8760 .2 -M * 1.4 -M *
Sylvan Road 7120 .2 .0 * 3.3 .9 367
Younts Peak 8350 .0 .4 0* .4 .9 44
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Basin Index (%) 186* 271
POWDER RIVER
Bear Trap Meadow 8200 .2 .0 * 1.2 .7 171
Cloud Peak Reservoir 9860 .0 .2 0* 1.0 1.2 83
Grave Springs 8550 .3 .0 * 1.5 1.1 136
Hansen Sawmill 8360 .0 .0 * .7 .8 88
Middle Powder 7760 1.7 .2 850* 1.1 1.1 100
Powder River Pass 9480 .9 .1 900* 1.7 .9 189
Soldier Park 8720 .0 -M * 1.2 -M *
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Basin Index (%) 620* 124
TONGUE RIVER
Big Goose 7990 .0 .2 0* .4 1.2 33
Bone Springs Div 9350 .8 1.1 73* 1.5 1.2 125
Burgess Junction 7880 .1 .3 33* .8 1.1 73
Dome Lake 8880 .0 .5 0* 1.0 1.2 83
Little Goose 8870 .0 -M * 1.1 -M *
Sucker Creek 8880 .4 .3 133* .8 1.2 67
Tie Creek 6870 .0 .0 * .9 1.4 64
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Basin Index (%) 54* 74
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .5 1.1 45
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Basin Index (%) * 45
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.3 1.0 130
North Rapid Creek 6130 .0 .0 * .6 .9 67
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Basin Index (%) * 100
UPPER N. PLATTE
Arapaho Ridge 10960 1.2 .4 300* 1.8 1.2 150
Blackhall Mtn 9820 .2 -M * 1.3 -M *
Columbine 9160 .0 .0 * 1.9 1.1 173
Divide Peak 8880 .0 .0 * .2 1.4 14
Joe Wright 10120 .0 .4 0* 2.0 1.4 143
Laprele Creek 8375 .0 .0 * .0 .8 0
Med Bow 10500 1.0 -M * 1.6 -M *
North French Creek 10130 .0 .5 0* .9 1.3 69
Never Summer 10280 1.0 .5 200* 1.6 -M *
Old Battle 10000 1.0 .6 167* .7 1.7 41
Rawah 9020 .2 .0 * 1.5 1.0 150
Sage Creek Basin 7850 .0 .0 * .5 1.0 50
Sand Lake 10050 .7 .6 117* .1 1.3 8
South Brush Creek 8440 .0 .0 * .4 1.0 40
Tower 10500 .9 .9 100* 1.2 1.7 71
Webber Springs 9250 .0 .0 * 1.2 1.3 92
Willow Creek Pass 9540 .3 .0 * 1.1 .7 157
Zirkel 9340 .1 .0 * 1.7 1.9 89
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Basin Index (%) 138* 81
SWEETWATER
Deer Park 9700 .0 .5 0* 1.1 1.3 85
Larsen Creek 9000 .1 .0 * 2.0 -M *
South Pass 9040 .0 .0 * .9 .9 100
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Basin Index (%) 20* 91
LOWER N. PLATTE
Casper Mtn. 7900 .0 .1 0* .3 1.1 27
Laprele Creek 8375 .0 .0 * .0 .8 0
Reno Hill 8400 .1 .0 * .7 1.0 70
Windy Peak 7900 .0 .0 * .2 .8 25
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Basin Index (%) 100* 32
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * -M .9 *
Cinnabar Park 9574 .2 .0 * .7 1.2 58
Crow Creek 8330 -M .0 * .3 .8 38
Deadman Hill 10220 .4 .3 133* .9 1.0 90
Rawah 9020 .2 .0 * 1.5 1.0 150
Roach 9700 .1 .0 * .7 1.0 70
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Basin Index (%) 300* 82
S. PLATTE
Black Mountain 8920 .1 -M * .4 -M *
Crow Creek 8330 -M .0 * .3 .8 38
Deadman Hill 10220 .4 .3 133* .9 1.0 90
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Basin Index (%) 133* 67
LITTLE SNAKE RIVER
Battle Mountain 7440 .3 .0 * .6 .8 75
Divide Peak 8880 .0 .0 * .2 1.4 14
Elk River 8700 .2 .0 * 1.1 1.1 100
Little Snake River 8915 .0 .0 * 1.6 1.8 89
Old Battle 10000 1.0 .6 167* .7 1.7 41
Sage Creek Basin 7850 .0 .0 * .5 1.0 50
Sandstone RS 8150 1.0 .0 * .0 .9 0
Whiskey Park 8950 .0 .0 * 1.2 1.2 100
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Basin Index (%) 417* 60
UPPER GREEN RIVER
Big Sandy Opening 9080 .6 .0 * 2.0 .7 286
Blind Bull Sum 8650 .7 .1 700* 1.0 .8 125
East Rim Divide 7930 .0 .0 * 1.1 .5 220
Elkhart Park G.S. 9400 .9 .0 * 2.2 .8 275
Gros Ventre Summit 8750 .4 .3 133* 1.8 .7 257
Gunsight Pass 9820 .3 .0 * 2.3 .9 256
Kendall R.S. 7740 .0 .0 * 1.3 .5 260
Loomis Park 8240 .0 .0 * 1.7 .7 243
New Fork Lake 8340 .0 .0 * .4 .5 80
Pocket Creek 9360 1.0 -M * 2.0 -M *
Snider Basin 8060 .0 .0 * 1.2 .5 240
Spring Creek Divide 9000 .3 .0 * 1.8 .7 257
Triple Peak 8500 .3 .0 * 2.0 .8 250
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Basin Index (%) 875* 232
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 * .7 .5 140
Hewinta 9519 .0 .0 * .5 .8 62
Hickerson Park 9145 .4 .0 * .6 .7 86
Hole-in-Rock 9150 .0 .0 * .7 .8 88
Indian Creek 9425 .1 .4 25* 1.4 .8 175
Kelley R.S. 8180 .0 .0 * 1.2 .7 171
Spirit Lk 10235 .0 -M * 1.0 -M *
Steel Creek Park 10200 .3 .3 100* .8 1.0 80
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Basin Index (%) 114* 111
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * .4 -M *
Bug Lake 7950 .0 .0 * .3 .9 33
Burts Miller Ranch 8000 .0 -M * .2 -M *
Chalk Creek #1 8993 .2 .0 * 1.0 1.2 83
Hayden Fork 9212 .1 .0 * .7 1.0 70
Kelley R.S. 8180 .0 .0 * 1.2 .7 171
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 .7 200
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Basin Index (%) * 85
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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.
