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 22 , 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 1.4 379
Black Bear 8170 1.7 1.8 94* 6.4 2.4 267
Blind Bull Sum 8650 2.5 .6 417* 4.1 1.4 293
Cottonwood Creek 7670 -M .0 * -M 1.8 *
East Rim Divide 7930 .7 .0 * 3.0 .9 333
Grand Targhee 9260 -M 3.6 * -M 4.4 *
Granite Creek 6770 .5 .0 * 4.4 1.3 338
Grassy Lake 7265 1.5 .0 * 7.9 2.2 359
Gros Ventre Summit 8750 .9 1.0 90* 3.4 1.2 283
Gunsight Pass 9820 -M .6 * -M 1.6 *
Lewis Lake Divide 7850 1.6 .0 * 6.8 2.0 340
Phillips Bench 8200 1.3 .0 * 6.4 1.6 400
Salt River Summit 7760 -M .0 * -M 1.1 *
Snake River Station 6920 .6 .0 * 5.4 1.8 300
Spring Creek Divide 9000 2.6 .6 433* 5.4 1.4 386
Thumb Divide 7980 1.0 .0 * 4.3 1.5 287
Togwotee Pass 9580 2.6 1.9 137* 4.7 1.8 261
Two Ocean Plateau 9240 -M 2.2 * -M 2.0 *
Willow Creek 8380 2.0 .1 2000* 7.4 2.4 308
Younts Peak 8350 -M .8 * -M 1.5 *
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Basin Index (%) 340* 321
MADISON-GALLATIN
Black Bear 8170 1.7 1.8 94* 6.4 2.4 267
Canyon 7870 .6 .2 300* 3.6 1.3 277
Madison Plateau 7750 1.0 .7 143* 5.7 1.8 317
West Yellowstone 6700 .0 .0 * 3.6 1.4 257
Whiskey Creek 6800 .1 .0 * 3.6 1.6 225
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Basin Index (%) 126* 269
YELLOWSTONE
Beartooth Lake 9360 1.6 1.7 94* 2.6 1.5 173
Burnt Mtn 5880 .1 .0 * 2.0 2.7 74
Canyon 7870 .6 .2 300* 3.6 1.3 277
Cole Creek 7850 .2 1.6 12* 1.6 2.3 70
Evening Star 9200 3.7 1.4 264* 7.0 2.2 318
Fisher Creek 9100 2.6 1.6 162* 5.4 2.4 225
Northeast Entrance 7350 .1 .0 * 2.9 1.2 242
Parker Peak 9400 3.5 1.6 219* 5.6 2.0 280
Sylvan Lake 8420 2.8 1.0 280* 8.1 2.1 386
Thumb Divide 7980 1.0 .0 * 4.3 1.5 287
Two Ocean Plateau 9240 -M 2.2 * -M 2.0 *
White Mill 8700 2.0 1.3 154* 3.4 1.9 179
Wolverine 7650 .6 .0 * 3.5 1.3 269
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Basin Index (%) 181* 223
WIND RIVER
Burroughs Creek 8750 .2 -M * 2.3 -M *
Castle Creek 8400 -M -M * 1.4 -M *
Cold Springs 9630 .7 .2 350* 2.1 1.3 162
Deer Park 9700 1.2 1.2 100* 2.8 2.0 140
Hobbs Park 10100 2.1 1.1 191* 3.1 1.6 194
Kirwin 9550 1.0 1.0 100* 2.1 1.4 150
Little Warm 9370 1.0 .6 167* 3.2 1.4 229
Owl Creek 8975 .0 .4 0* 1.0 .9 111
South Pass 9040 .9 .4 225* 2.0 1.5 133
St. Lawrence Alt 8620 .0 .1 0* 2.0 1.3 154
Togwotee Pass 9580 2.6 1.9 137* 4.7 1.8 261
Townsend Creek 8700 .9 .0 * 2.3 1.6 144
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Basin Index (%) 151* 171
BIGHORN BASIN
Bald Mtn. 9380 2.8 2.2 127 2.3 2.0 115
Bear Trap Meadow 8200 .5 .2 250* 1.8 1.3 138
Bone Springs Div 9350 1.3 1.7 76 2.4 2.0 120
Grave Springs 8550 .6 .5 120* 1.9 1.7 112
Kirwin 9550 1.0 1.0 100* 2.1 1.4 150
Marquette 8760 .3 -M * 1.6 -M *
Middle Powder 7760 .5 .5 100* 1.8 1.8 100
Owl Creek 8975 .0 .4 0* 1.0 .9 111
Powder River Pass 9480 1.1 .7 157* 2.5 1.6 156
Shell Creek 9580 3.1 2.2 141 2.9 1.7 171
Timber Creek 7950 .1 .2 50* 1.1 1.5 73
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Basin Index (%) 115* 125
SHOSHONE RIVER
Blackwater 9780 4.5 1.8 250* 6.6 2.0 330
Evening Star 9200 3.7 1.4 264* 7.0 2.2 318
Marquette 8760 .3 -M * 1.6 -M *
Sylvan Road 7120 .5 .0 * 5.9 1.7 347
Younts Peak 8350 -M .8 * -M 1.5 *
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Basin Index (%) 272* 331
POWDER RIVER
Bear Trap Meadow 8200 .5 .2 250* 1.8 1.3 138
Cloud Peak Reservoir 9860 .4 1.2 33* 2.3 2.1 110
Grave Springs 8550 .6 .5 120* 1.9 1.7 112
Hansen Sawmill 8360 .2 .0 * 1.0 1.4 71
Middle Powder 7760 .5 .5 100* 1.8 1.8 100
Powder River Pass 9480 1.1 .7 157* 2.5 1.6 156
Soldier Park 8720 -M -M * 1.5 -M *
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Basin Index (%) 106* 114
TONGUE RIVER
Big Goose 7990 .2 .6 33* .7 2.0 35
Bone Springs Div 9350 1.3 1.7 76 2.4 2.0 120
Burgess Junction 7880 .1 .7 14* 1.0 1.8 56
Dome Lake 8880 .3 1.1 27* 1.7 2.0 85
Little Goose 8870 -M -M * 1.5 -M *
Sucker Creek 8880 .1 .9 11* 1.2 2.0 60
Tie Creek 6870 .1 .0 * 1.1 2.1 52
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Basin Index (%) 42* 68
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * .7 1.4 50
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Basin Index (%) * 50
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 1.5 1.7 88
North Rapid Creek 6130 .0 .0 * .8 1.5 53
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Basin Index (%) * 72
UPPER N. PLATTE
Arapaho Ridge 10960 1.0 1.8 56* 2.0 2.3 87
Blackhall Mtn 9820 1.1 -M * 2.6 -M *
Columbine 9160 .0 .0 * 2.7 1.9 142
Divide Peak 8880 .8 .6 133* 1.5 2.2 68
Joe Wright 10120 .0 1.1 0* 2.7 2.4 112
Laprele Creek 8375 .0 .0 * .3 1.3 23
Med Bow 10500 2.4 -M * 3.4 -M *
North French Creek 10130 1.1 1.6 69* 2.2 2.3 96
Never Summer 10280 1.0 1.3 77* 2.0 -M *
Old Battle 10000 1.3 1.5 87* 1.9 2.8 68
Rawah 9020 .2 .0 * 2.0 1.7 118
Sage Creek Basin 7850 .0 .0 * .8 1.6 50
Sand Lake 10050 2.0 1.6 125* 1.9 2.2 86
South Brush Creek 8440 .3 .0 * 1.2 1.7 71
Tower 10500 1.5 2.0 75* 2.6 2.9 90
Webber Springs 9250 .5 .5 100* 2.3 2.2 105
Willow Creek Pass 9540 .3 .4 75* 1.4 1.4 100
Zirkel 9340 -M .2 * 2.9 3.0 97
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Basin Index (%) 81* 89
SWEETWATER
Deer Park 9700 1.2 1.2 100* 2.8 2.0 140
Larsen Creek 9000 .6 .0 * 3.8 -M *
South Pass 9040 .9 .4 225* 2.0 1.5 133
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Basin Index (%) 169* 137
LOWER N. PLATTE
Casper Mtn. 7900 .2 .3 67* .7 1.9 37
Laprele Creek 8375 .0 .0 * .3 1.3 23
Reno Hill 8400 -M .8 * -M 1.8 *
Windy Peak 7900 .0 .0 * .3 1.2 25
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Basin Index (%) 67* 30
LARAMIE RIVER
Brooklyn Lake 10240 .8 .5 160* .9 1.6 56
Cinnabar Park 9574 1.0 .7 143* 1.7 2.0 85
Crow Creek 8330 .0 .0 * .8 1.4 57
Deadman Hill 10220 1.2 1.2 100* 2.0 1.7 118
Rawah 9020 .2 .0 * 2.0 1.7 118
Roach 9700 .5 .4 125* 1.2 1.7 71
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Basin Index (%) 132* 85
S. PLATTE
Black Mountain 8920 .7 -M * 1.3 -M *
Crow Creek 8330 .0 .0 * .8 1.4 57
Deadman Hill 10220 1.2 1.2 100* 2.0 1.7 118
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Basin Index (%) 100* 90
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 1.6 1.2 133
Divide Peak 8880 .8 .6 133* 1.5 2.2 68
Elk River 8700 .3 .0 * 1.8 1.8 100
Little Snake River 8915 .2 .5 40* 2.9 3.3 88
Old Battle 10000 1.3 1.5 87* 1.9 2.8 68
Sage Creek Basin 7850 .0 .0 * .8 1.6 50
Sandstone RS 8150 .3 .0 * 1.0 1.4 71
Whiskey Park 8950 .4 .2 200* 2.2 1.9 116
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Basin Index (%) 118* 85
UPPER GREEN RIVER
Big Sandy Opening 9080 1.7 .7 243* 3.8 1.2 317
Blind Bull Sum 8650 2.5 .6 417* 4.1 1.4 293
East Rim Divide 7930 .7 .0 * 3.0 .9 333
Elkhart Park G.S. 9400 1.5 .5 300* 3.6 1.2 300
Gros Ventre Summit 8750 .9 1.0 90* 3.4 1.2 283
Gunsight Pass 9820 -M .6 * -M 1.6 *
Kendall R.S. 7740 .5 .0 * 3.2 1.0 320
Loomis Park 8240 .8 .0 * 3.9 1.1 355
New Fork Lake 8340 .8 .0 * 1.8 .9 200
Pocket Creek 9360 -M -M * -M -M *
Snider Basin 8060 .9 .0 * 3.9 .9 433
Spring Creek Divide 9000 2.6 .6 433* 5.4 1.4 386
Triple Peak 8500 2.0 .4 500* 6.0 1.5 400
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Basin Index (%) 392* 331
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * 1.1 -M *
Buck Pasture 9700 .1 -M * 1.7 -M *
EF Blacks Fork GS 9360 .1 -M * 1.6 -M *
Hams Fork 7840 .4 .0 * 2.8 .9 311
Hewinta 9519 .0 .0 * 1.3 1.4 93
Hickerson Park 9145 .3 .0 * 1.1 1.2 92
Hole-in-Rock 9150 .0 .0 * 1.4 1.4 100
Indian Creek 9425 2.0 .9 222* 4.1 1.4 293
Kelley R.S. 8180 -M .0 * -M 1.2 *
Spirit Lk 10235 .2 -M * 1.4 -M *
Steel Creek Park 10200 1.0 .7 143* 1.8 1.7 106
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Basin Index (%) 231* 156
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 1.0 -M *
Bug Lake 7950 1.0 .0 * 3.1 1.5 207
Burts Miller Ranch 8000 .0 -M * .8 -M *
Chalk Creek #1 8993 .8 .4 200* 1.9 2.1 90
Hayden Fork 9212 .1 .0 * 1.5 1.8 83
Kelley R.S. 8180 -M .0 * -M 1.2 *
Lily Lake 9156 .0 .0 * 1.1 1.7 65
Monte Cristo 8960 2.0 .0 * 3.3 1.9 174
Salt River Summit 7760 -M .0 * -M 1.1 *
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Basin Index (%) 975* 121
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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.
