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 MONDAY: SEPTEMBER 15 , 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 31.1 119
Black Bear 8170 .0 .0 * 58.2 53.7 108
Blind Bull Sum 8650 .0 .0 * 34.4 29.9 115
Cottonwood Creek 7670 .2 .0 * 49.7 37.8 131
East Rim Divide 7930 .0 .0 * 23.6 19.3 122
Grand Targhee 9260 .1 .0 * 54.7 47.0 116
Granite Creek 6770 .0 .0 * 35.1 28.9 121
Grassy Lake 7265 .1 .0 * 57.5 50.9 113
Gros Ventre Summit 8750 .0 .0 * 24.6 22.6 109
Gunsight Pass 9820 .0 .0 * 32.2 24.9 129
Lewis Lake Divide 7850 .0 .0 * 58.8 49.5 119
Phillips Bench 8200 .0 .0 * 47.4 40.3 118
Salt River Summit 7760 .0 .0 * 28.9 25.9 112
Snake River Station 6920 .0 .0 * 40.4 34.1 118
Spring Creek Divide 9000 .2 .0 * 43.8 34.7 126
Thumb Divide 7980 .0 .0 * 31.4 29.0 108
Togwotee Pass 9580 .1 .0 * 44.7 37.5 119
Two Ocean Plateau 9240 -M .0 * 48.6 42.0 116
Willow Creek 8380 .1 .0 * 57.8 50.3 115
Younts Peak 8350 -M .0 * -M 28.1 *
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Basin Index (%) * 117
MADISON-GALLATIN
Black Bear 8170 .0 .0 * 58.2 53.7 108
Canyon 7870 .0 .0 * 27.4 26.9 102
Madison Plateau 7750 .0 .0 * 40.6 39.7 102
West Yellowstone 6700 .0 .0 * 28.1 23.4 120
Whiskey Creek 6800 .0 .0 * 34.6 32.0 108
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Basin Index (%) * 108
YELLOWSTONE
Beartooth Lake 9360 .0 .0 * 44.5 32.1 139
Burnt Mtn 5880 .0 .0 * 33.8 28.5 119
Canyon 7870 .0 .0 * 27.4 26.9 102
Cole Creek 7850 .9 .0 * 32.2 29.7 108
Evening Star 9200 .0 .0 * 57.8 43.6 133
Fisher Creek 9100 .0 .0 * 58.2 50.3 116
Northeast Entrance 7350 .0 .0 * 27.5 24.1 114
Parker Peak 9400 .0 .0 * 46.1 30.7 150
Sylvan Lake 8420 .0 .0 * 45.4 36.8 123
Thumb Divide 7980 .0 .0 * 31.4 29.0 108
Two Ocean Plateau 9240 -M .0 * 48.6 42.0 116
White Mill 8700 .0 .0 * 44.9 39.3 114
Wolverine 7650 .0 .0 * 28.7 22.6 127
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Basin Index (%) * 121
WIND RIVER
Burroughs Creek 8750 .0 .0 * 4.4 27.2 16
Castle Creek 8400 .0 -M * 22.1 -M *
Cold Springs 9630 .0 .0 * 22.1 20.7 107
Deer Park 9700 .0 .0 * 30.7 33.7 91
Hobbs Park 10100 .0 .0 * 25.5 26.6 96
Kirwin 9550 .0 .0 * 29.2 25.1 116
Little Warm 9370 .0 .0 * 26.4 24.8 106
Owl Creek 8975 .0 .0 * 14.0 16.4 85
South Pass 9040 .0 .0 * 22.0 28.4 77
St. Lawrence Alt 8620 .0 .0 * 16.3 19.3 84
Togwotee Pass 9580 .1 .0 * 44.7 37.5 119
Townsend Creek 8700 .0 .0 * 19.1 23.4 82
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Basin Index (%) * 90
BIGHORN BASIN
Bald Mtn. 9380 .0 .0 * 34.6 30.8 112
Bear Trap Meadow 8200 .0 .0 * 25.5 19.7 129
Bone Springs Div 9350 .0 .0 * 32.2 29.9 108
Grave Springs 8550 .0 .0 * 22.7 21.8 104
Kirwin 9550 .0 .0 * 29.2 25.1 116
Marquette 8760 .0 -M * 25.0 -M *
Middle Powder 7760 .0 .0 * 29.1 23.7 123
Owl Creek 8975 .0 .0 * 14.0 16.4 85
Powder River Pass 9480 .0 .0 * 30.7 25.6 120
Shell Creek 9580 1.4 .0 * 32.2 27.0 119
Timber Creek 7950 .0 .0 * 21.7 20.1 108
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Basin Index (%) * 113
SHOSHONE RIVER
Blackwater 9780 .0 .0 * 45.0 35.0 129
Evening Star 9200 .0 .0 * 57.8 43.6 133
Marquette 8760 .0 -M * 25.0 -M *
Sylvan Road 7120 .0 .0 * 34.0 27.6 123
Younts Peak 8350 -M .0 * -M 28.1 *
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Basin Index (%) * 129
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 25.5 19.7 129
Cloud Peak Reservoir 9860 .0 .0 * 37.1 29.1 127
Grave Springs 8550 .0 .0 * 22.7 21.8 104
Hansen Sawmill 8360 .0 .0 * 25.5 21.0 121
Middle Powder 7760 .0 .0 * 29.1 23.7 123
Powder River Pass 9480 .0 .0 * 30.7 25.6 120
Soldier Park 8720 .0 -M * 26.2 -M *
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Basin Index (%) * 121
TONGUE RIVER
Big Goose 7990 .0 .0 * 27.7 23.6 117
Bone Springs Div 9350 .0 .0 * 32.2 29.9 108
Burgess Junction 7880 .0 .0 * 27.1 24.4 111
Dome Lake 8880 .0 .0 * 33.6 27.1 124
Little Goose 8870 .3 -M * 34.0 -M *
Sucker Creek 8880 .0 .0 * 33.6 28.5 118
Tie Creek 6870 .0 .0 * 28.3 25.5 111
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Basin Index (%) * 115
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 27.1 24.6 110
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Basin Index (%) * 110
CHEYENNE RIVER BASIN
Blind Park 6890 .0 .0 * 30.8 26.7 115
North Rapid Creek 6130 .1 .0 * 31.6 26.2 121
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Basin Index (%) * 118
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .0 * 44.2 36.8 120
Blackhall Mtn 9820 .0 -M * 52.3 -M *
Columbine 9160 .0 .0 * 49.2 36.9 133
Divide Peak 8880 .0 .0 * 36.4 32.6 112
Joe Wright 10120 -M .0 * -M 42.5 *
Laprele Creek 8375 .0 .0 * 22.4 23.3 96
Med Bow 10500 .0 -M * 58.0 -M *
North French Creek 10130 .0 .0 * 52.0 41.9 124
Never Summer 10280 -M .0 * -M -M *
Old Battle 10000 .0 .0 * 54.1 50.2 108
Rawah 9020 .0 .0 * 34.4 25.8 133
Sage Creek Basin 7850 .0 .0 * 21.0 22.1 95
Sand Lake 10050 .0 .0 * 50.0 39.6 126
South Brush Creek 8440 .0 .0 * 25.3 26.4 96
Tower 10500 .0 .0 * 70.0 56.6 124
Webber Springs 9250 .0 .0 * 45.4 39.0 116
Willow Creek Pass 9540 .0 .0 * 31.0 25.0 124
Zirkel 9340 .0 .0 * -M 41.3 *
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Basin Index (%) * 117
SWEETWATER
Deer Park 9700 .0 .0 * 30.7 33.7 91
Larsen Creek 9000 .0 .0 * 23.2 -M *
South Pass 9040 .0 .0 * 22.0 28.4 77
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Basin Index (%) * 85
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 25.9 26.8 97
Laprele Creek 8375 .0 .0 * 22.4 23.3 96
Reno Hill 8400 .0 .0 * 33.5 27.7 121
Windy Peak 7900 .0 .0 * 24.9 22.1 113
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Basin Index (%) * 107
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * 44.6 34.2 130
Cinnabar Park 9574 .0 .0 * 44.9 36.5 123
Crow Creek 8330 .0 .0 * 26.2 24.8 106
Deadman Hill 10220 .0 .0 * 39.6 29.9 132
Rawah 9020 .0 .0 * 34.4 25.8 133
Roach 9700 .1 .0 * 40.7 32.0 127
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Basin Index (%) * 126
S. PLATTE
Black Mountain 8920 .1 -M * 27.4 -M *
Crow Creek 8330 .0 .0 * 26.2 24.8 106
Deadman Hill 10220 .0 .0 * 39.6 29.9 132
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Basin Index (%) * 120
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 26.6 23.2 115
Divide Peak 8880 .0 .0 * 36.4 32.6 112
Elk River 8700 .0 .0 * 35.0 31.2 112
Little Snake River 8915 .0 .0 * 49.5 41.8 118
Old Battle 10000 .0 .0 * 54.1 50.2 108
Sage Creek Basin 7850 .0 .0 * 21.0 22.1 95
Sandstone RS 8150 .0 .0 * 26.3 28.2 93
Whiskey Park 8950 .0 .0 * 54.5 40.4 135
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Basin Index (%) * 112
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 22.4 23.1 97
Blind Bull Sum 8650 .0 .0 * 34.4 29.9 115
East Rim Divide 7930 .0 .0 * 23.6 19.3 122
Elkhart Park G.S. 9400 .2 .0 * 26.7 23.6 113
Gros Ventre Summit 8750 .0 .0 * 24.6 22.6 109
Gunsight Pass 9820 .0 .0 * 32.2 24.9 129
Kendall R.S. 7740 .0 .0 * 30.5 22.2 137
Loomis Park 8240 .0 .0 * 34.4 26.8 128
New Fork Lake 8340 .0 .0 * 21.6 19.5 111
Pocket Creek 9360 -M -M * 27.2 -M *
Snider Basin 8060 .0 .0 * 27.8 21.2 131
Spring Creek Divide 9000 .2 .0 * 43.8 34.7 126
Triple Peak 8500 .0 .0 * 49.5 37.2 133
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Basin Index (%) * 122
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * 24.0 -M *
Buck Pasture 9700 .0 -M * 25.6 -M *
EF Blacks Fork GS 9360 .0 -M * 22.3 -M *
Hams Fork 7840 .1 .0 * 24.2 19.1 127
Hewinta 9519 .0 .0 * 27.4 25.0 110
Hickerson Park 9145 .3 .0 * 21.3 20.8 102
Hole-in-Rock 9150 .0 .0 * 22.0 20.2 109
Indian Creek 9425 .0 .0 * 38.2 32.9 116
Kelley R.S. 8180 .3 .0 * 31.2 27.2 115
Spirit Lk 10235 .0 -M * 29.4 -M *
Steel Creek Park 10200 .0 .0 * 30.2 28.8 105
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Basin Index (%) * 112
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 22.8 -M *
Bug Lake 7950 .5 .0 * 32.7 28.8 114
Burts Miller Ranch 8000 .0 -M * 13.3 -M *
Chalk Creek #1 8993 .1 .0 * 32.2 38.8 83
Hayden Fork 9212 .0 .0 * 36.2 33.0 110
Kelley R.S. 8180 .3 .0 * 31.2 27.2 115
Lily Lake 9156 .0 .0 * 27.4 28.3 97
Monte Cristo 8960 .1 .0 * 40.9 38.1 107
Salt River Summit 7760 .0 .0 * 28.9 25.9 112
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Basin Index (%) * 104
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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.