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 TUESDAY: SEPTEMBER 9 , 2014
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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 * 37.1 30.8 120
Black Bear 8170 .0 .0 * 58.1 53.2 109
Blind Bull Sum 8650 .0 .0 * 34.3 29.5 116
Cottonwood Creek 7670 .2 .0 * 49.7 37.4 133
East Rim Divide 7930 .0 .0 * 23.6 19.0 124
Grand Targhee 9260 .1 .0 * 54.6 46.2 118
Granite Creek 6770 .0 .0 * 34.8 28.6 122
Grassy Lake 7265 .2 .0 * 57.4 50.4 114
Gros Ventre Summit 8750 .0 .0 * 24.5 22.2 110
Gunsight Pass 9820 .0 .0 * 32.1 24.5 131
Lewis Lake Divide 7850 .0 .0 * 58.8 49.1 120
Phillips Bench 8200 .0 .0 * 47.4 39.9 119
Salt River Summit 7760 .0 .0 * 28.8 25.4 113
Snake River Station 6920 .0 .0 * 40.4 33.7 120
Spring Creek Divide 9000 .2 .0 * 43.7 34.3 127
Thumb Divide 7980 .1 .0 * 31.2 28.7 109
Togwotee Pass 9580 .1 .0 * 44.5 37.0 120
Two Ocean Plateau 9240 -M .0 * 48.4 41.5 117
Willow Creek 8380 .1 .0 * 57.8 49.8 116
Younts Peak 8350 -M .0 * -M 27.6 *
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Basin Index (%) * 118
MADISON-GALLATIN
Black Bear 8170 .0 .0 * 58.1 53.2 109
Canyon 7870 .0 .0 * 27.2 26.6 102
Madison Plateau 7750 .0 .0 * 40.0 39.2 102
West Yellowstone 6700 .0 .0 * 27.9 23.2 120
Whiskey Creek 6800 .0 .0 * 34.2 31.6 108
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Basin Index (%) * 108
YELLOWSTONE
Beartooth Lake 9360 .0 .0 * 43.8 31.7 138
Burnt Mtn 5880 .0 .0 * 32.4 28.1 115
Canyon 7870 .0 .0 * 27.2 26.6 102
Cole Creek 7850 .0 .0 * 31.0 29.1 107
Evening Star 9200 .0 .0 * 56.4 43.0 131
Fisher Creek 9100 .0 .0 * 57.7 49.6 116
Northeast Entrance 7350 .0 .0 * 27.1 23.7 114
Parker Peak 9400 .0 .0 * 45.0 30.4 148
Sylvan Lake 8420 .0 .0 * 44.4 36.4 122
Thumb Divide 7980 .1 .0 * 31.2 28.7 109
Two Ocean Plateau 9240 -M .0 * 48.4 41.5 117
White Mill 8700 .0 .0 * 44.4 38.8 114
Wolverine 7650 .0 .0 * 27.7 22.2 125
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Basin Index (%) * 120
WIND RIVER
Burroughs Creek 8750 .0 .0 * 4.2 26.8 16
Castle Creek 8400 .0 -M * 21.9 -M *
Cold Springs 9630 .0 .0 * 21.9 20.4 107
Deer Park 9700 .0 .0 * 30.2 33.4 90
Hobbs Park 10100 .0 .0 * 25.3 26.1 97
Kirwin 9550 .0 .0 * 28.3 24.6 115
Little Warm 9370 .0 .0 * 26.1 24.3 107
Owl Creek 8975 .0 .0 * 13.5 16.1 84
South Pass 9040 .0 .0 * 21.8 28.2 77
St. Lawrence Alt 8620 .0 .0 * 16.1 19.1 84
Togwotee Pass 9580 .1 .0 * 44.5 37.0 120
Townsend Creek 8700 .0 .0 * 18.7 23.0 81
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Basin Index (%) * 90
BIGHORN BASIN
Bald Mtn. 9380 .0 .0 * 34.1 30.2 113
Bear Trap Meadow 8200 .0 .0 * 25.0 19.2 130
Bone Springs Div 9350 .0 .0 * 30.9 29.3 105
Grave Springs 8550 .0 .0 * 22.4 21.5 104
Kirwin 9550 .0 .0 * 28.3 24.6 115
Marquette 8760 .0 -M * 24.0 -M *
Middle Powder 7760 .0 .0 * 29.1 23.1 126
Owl Creek 8975 .0 .0 * 13.5 16.1 84
Powder River Pass 9480 .0 .0 * 30.6 25.1 122
Shell Creek 9580 .0 .0 * 31.0 26.4 117
Timber Creek 7950 .0 .0 * 21.0 19.7 107
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Basin Index (%) * 113
SHOSHONE RIVER
Blackwater 9780 .0 .0 * 43.9 34.5 127
Evening Star 9200 .0 .0 * 56.4 43.0 131
Marquette 8760 .0 -M * 24.0 -M *
Sylvan Road 7120 .0 .0 * 33.1 27.1 122
Younts Peak 8350 -M .0 * -M 27.6 *
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Basin Index (%) * 128
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 25.0 19.2 130
Cloud Peak Reservoir 9860 .0 .0 * 35.3 28.5 124
Grave Springs 8550 .0 .0 * 22.4 21.5 104
Hansen Sawmill 8360 .0 .0 * 24.3 20.5 119
Middle Powder 7760 .0 .0 * 29.1 23.1 126
Powder River Pass 9480 .0 .0 * 30.6 25.1 122
Soldier Park 8720 .0 -M * 24.5 -M *
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Basin Index (%) * 121
TONGUE RIVER
Big Goose 7990 .0 .0 * 26.4 23.1 114
Bone Springs Div 9350 .0 .0 * 30.9 29.3 105
Burgess Junction 7880 .0 .0 * 26.4 24.0 110
Dome Lake 8880 .0 .0 * 32.3 26.5 122
Little Goose 8870 .0 -M * 32.1 -M *
Sucker Creek 8880 .0 .0 * 32.6 28.0 116
Tie Creek 6870 .0 .0 * 26.8 25.2 106
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Basin Index (%) * 112
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 26.0 24.1 108
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Basin Index (%) * 108
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 30.3 26.3 115
North Rapid Creek 6130 .0 .0 * 31.1 25.6 121
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Basin Index (%) * 118
UPPER N. PLATTE
Arapaho Ridge 10960 .1 .0 * 42.9 36.2 119
Blackhall Mtn 9820 .0 -M * 51.2 -M *
Columbine 9160 .1 .0 * 48.4 36.4 133
Divide Peak 8880 .0 .0 * 35.5 32.1 111
Joe Wright 10120 .0 .0 * 52.3 42.0 125
Laprele Creek 8375 .0 .0 * 22.1 23.0 96
Med Bow 10500 -M -M * 57.0 -M *
North French Creek 10130 -M .0 * 51.3 41.5 124
Never Summer 10280 .0 .0 * 39.1 -M *
Old Battle 10000 .1 .0 * 53.0 49.5 107
Rawah 9020 .0 .0 * 33.6 25.6 131
Sage Creek Basin 7850 .1 .0 * 20.3 21.7 94
Sand Lake 10050 .0 .0 * 49.2 39.2 126
South Brush Creek 8440 .1 .0 * 24.6 25.9 95
Tower 10500 .0 .0 * 69.0 56.0 123
Webber Springs 9250 .0 .0 * 44.6 38.5 116
Willow Creek Pass 9540 .0 .0 * 29.9 24.6 122
Zirkel 9340 .0 .0 * 56.4 40.8 138
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Basin Index (%) * 119
SWEETWATER
Deer Park 9700 .0 .0 * 30.2 33.4 90
Larsen Creek 9000 .0 .0 * 23.0 -M *
South Pass 9040 .0 .0 * 21.8 28.2 77
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Basin Index (%) * 84
LOWER N. PLATTE
Casper Mtn. 7900 .1 .0 * 25.4 26.5 96
Laprele Creek 8375 .0 .0 * 22.1 23.0 96
Reno Hill 8400 .2 .0 * 32.8 27.4 120
Windy Peak 7900 .0 .0 * 24.7 21.8 113
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Basin Index (%) * 106
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * 44.0 33.9 130
Cinnabar Park 9574 .0 .0 * 43.7 36.2 121
Crow Creek 8330 .0 .0 * 25.9 24.5 106
Deadman Hill 10220 .0 .0 * 39.2 29.6 132
Rawah 9020 .0 .0 * 33.6 25.6 131
Roach 9700 .1 .0 * 40.3 31.6 128
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Basin Index (%) * 125
S. PLATTE
Black Mountain 8920 .1 -M * 27.1 -M *
Crow Creek 8330 .0 .0 * 25.9 24.5 106
Deadman Hill 10220 .0 .0 * 39.2 29.6 132
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Basin Index (%) * 120
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 25.6 22.9 112
Divide Peak 8880 .0 .0 * 35.5 32.1 111
Elk River 8700 .0 .0 * 34.4 30.8 112
Little Snake River 8915 -M .0 * 48.3 41.2 117
Old Battle 10000 .1 .0 * 53.0 49.5 107
Sage Creek Basin 7850 .1 .0 * 20.3 21.7 94
Sandstone RS 8150 .2 .0 * 24.5 27.8 88
Whiskey Park 8950 .1 .0 * 53.1 40.0 133
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Basin Index (%) * 111
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 22.4 22.7 99
Blind Bull Sum 8650 .0 .0 * 34.3 29.5 116
East Rim Divide 7930 .0 .0 * 23.6 19.0 124
Elkhart Park G.S. 9400 .1 .0 * 26.7 23.1 116
Gros Ventre Summit 8750 .0 .0 * 24.5 22.2 110
Gunsight Pass 9820 .0 .0 * 32.1 24.5 131
Kendall R.S. 7740 .0 .0 * 30.5 21.8 140
Loomis Park 8240 .0 .0 * 34.5 26.4 131
New Fork Lake 8340 .0 .0 * 21.6 19.2 112
Pocket Creek 9360 -M -M * 27.2 -M *
Snider Basin 8060 .0 .0 * 27.5 21.0 131
Spring Creek Divide 9000 .2 .0 * 43.7 34.3 127
Triple Peak 8500 .0 .0 * 49.5 36.9 134
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Basin Index (%) * 123
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * 23.3 -M *
Buck Pasture 9700 .0 -M * 25.5 -M *
EF Blacks Fork GS 9360 .0 -M * 21.4 -M *
Hams Fork 7840 .1 .0 * 24.1 18.9 128
Hewinta 9519 .1 .0 * 26.9 24.6 109
Hickerson Park 9145 .3 .0 * -M 20.5 *
Hole-in-Rock 9150 .0 .0 * 21.3 19.9 107
Indian Creek 9425 .0 .0 * 37.9 32.5 117
Kelley R.S. 8180 .3 .0 * 31.2 26.9 116
Spirit Lk 10235 .0 -M * 29.0 -M *
Steel Creek Park 10200 .0 .0 * 29.4 28.4 104
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Basin Index (%) * 113
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 21.7 -M *
Bug Lake 7950 .5 .0 * 32.5 28.4 114
Burts Miller Ranch 8000 .0 -M * 12.8 -M *
Chalk Creek #1 8993 .1 .0 * 32.0 38.3 84
Hayden Fork 9212 .0 .0 * 35.3 32.5 109
Kelley R.S. 8180 .3 .0 * 31.2 26.9 116
Lily Lake 9156 .0 .0 * 26.5 27.9 95
Monte Cristo 8960 .4 .0 * 40.5 37.6 108
Salt River Summit 7760 .0 .0 * 28.8 25.4 113
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Basin Index (%) * 105
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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.