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 SUNDAY: SEPTEMBER 28 , 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 .1 .0 * 37.9 31.7 120
Black Bear 8170 -M .0 * -M 54.6 *
Blind Bull Sum 8650 .0 .0 * 36.9 30.6 121
Cottonwood Creek 7670 .2 .0 * 51.9 38.8 134
East Rim Divide 7930 .1 .0 * 25.7 19.8 130
Grand Targhee 9260 .3 .0 * 56.3 47.5 119
Granite Creek 6770 .0 .0 * 36.1 29.4 123
Grassy Lake 7265 .3 .0 * 59.9 51.9 115
Gros Ventre Summit 8750 .0 .0 * 26.3 23.4 112
Gunsight Pass 9820 .0 .0 * 33.6 25.6 131
Lewis Lake Divide 7850 .0 .0 * 60.6 50.3 120
Phillips Bench 8200 .0 .0 * 49.3 41.0 120
Salt River Summit 7760 .0 .0 * 30.6 26.6 115
Snake River Station 6920 .0 .0 * 42.2 34.7 122
Spring Creek Divide 9000 .2 .0 * 46.0 35.6 129
Thumb Divide 7980 .1 .0 * 32.5 29.4 111
Togwotee Pass 9580 .3 .0 * 46.4 38.5 121
Two Ocean Plateau 9240 .0 .0 * 49.7 42.8 116
Willow Creek 8380 .2 .0 * 60.0 51.6 116
Younts Peak 8350 -M .0 * -M 29.0 *
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Basin Index (%) * 120
MADISON-GALLATIN
Black Bear 8170 -M .0 * -M 54.6 *
Canyon 7870 .0 .0 * 28.6 27.5 104
Madison Plateau 7750 .3 .0 * -M 40.2 *
West Yellowstone 6700 .1 .0 * -M 23.8 *
Whiskey Creek 6800 .0 .0 * -M 32.6 *
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Basin Index (%) * 104*
YELLOWSTONE
Beartooth Lake 9360 .0 .0 * 45.5 32.8 139
Burnt Mtn 5880 .3 .0 * 34.9 29.3 119
Canyon 7870 .0 .0 * 28.6 27.5 104
Cole Creek 7850 .0 .0 * 33.0 31.0 106
Evening Star 9200 .1 .0 * 58.9 44.6 132
Fisher Creek 9100 .0 .0 * 60.1 51.3 117
Northeast Entrance 7350 .1 .0 * 29.1 24.8 117
Parker Peak 9400 .0 .0 * -M 31.6 *
Sylvan Lake 8420 .0 .0 * 47.0 37.8 124
Thumb Divide 7980 .1 .0 * 32.5 29.4 111
Two Ocean Plateau 9240 .0 .0 * 49.7 42.8 116
White Mill 8700 .0 .0 * 46.6 40.2 116
Wolverine 7650 .1 .0 * 29.3 23.3 126
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Basin Index (%) * 119
WIND RIVER
Burroughs Creek 8750 .2 .0 * 5.3 28.1 19
Castle Creek 8400 .1 -M * 22.5 -M *
Cold Springs 9630 .0 .0 * 22.0 21.6 102
Deer Park 9700 .0 .0 * 31.2 34.8 90
Hobbs Park 10100 .1 .0 * 25.6 27.6 93
Kirwin 9550 .2 .0 * 29.8 26.1 114
Little Warm 9370 .1 .0 * 27.0 25.7 105
Owl Creek 8975 .2 .0 * 14.3 17.1 84
South Pass 9040 .0 .0 * 22.4 29.3 76
St. Lawrence Alt 8620 .3 .0 * 17.0 20.1 85
Togwotee Pass 9580 .3 .0 * 46.4 38.5 121
Townsend Creek 8700 .1 .0 * 19.6 24.4 80
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Basin Index (%) * 89
BIGHORN BASIN
Bald Mtn. 9380 .1 .0 * 35.5 32.0 111
Bear Trap Meadow 8200 .0 .0 * 25.8 20.6 125
Bone Springs Div 9350 .1 .0 * 32.5 31.2 104
Grave Springs 8550 .0 .0 * 22.6 22.9 99
Kirwin 9550 .2 .0 * 29.8 26.1 114
Marquette 8760 .0 -M * 25.1 -M *
Middle Powder 7760 .0 .0 * 29.8 24.8 120
Owl Creek 8975 .2 .0 * 14.3 17.1 84
Powder River Pass 9480 .0 .0 * 32.1 26.6 121
Shell Creek 9580 .0 .0 * 33.3 28.2 118
Timber Creek 7950 .3 .0 * 22.1 21.0 105
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Basin Index (%) * 111
SHOSHONE RIVER
Blackwater 9780 .1 .0 * 45.5 36.0 126
Evening Star 9200 .1 .0 * 58.9 44.6 132
Marquette 8760 .0 -M * 25.1 -M *
Sylvan Road 7120 .0 .0 * 35.0 28.2 124
Younts Peak 8350 -M .0 * -M 29.0 *
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Basin Index (%) * 128
POWDER RIVER
Bear Trap Meadow 8200 .0 .0 * 25.8 20.6 125
Cloud Peak Reservoir 9860 .0 .0 * 37.4 30.2 124
Grave Springs 8550 .0 .0 * 22.6 22.9 99
Hansen Sawmill 8360 .1 .0 * 25.8 21.8 118
Middle Powder 7760 .0 .0 * 29.8 24.8 120
Powder River Pass 9480 .0 .0 * 32.1 26.6 121
Soldier Park 8720 .0 -M * 26.4 -M *
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Basin Index (%) * 118
TONGUE RIVER
Big Goose 7990 .2 .0 * 28.3 24.4 116
Bone Springs Div 9350 .1 .0 * 32.5 31.2 104
Burgess Junction 7880 .2 .0 * 27.8 25.3 110
Dome Lake 8880 .0 .0 * 34.2 28.2 121
Little Goose 8870 .1 -M * 34.6 -M *
Sucker Creek 8880 .0 .0 * 33.4 29.6 113
Tie Creek 6870 .0 .0 * 28.6 26.5 108
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Basin Index (%) * 112
BELLE FOURCHE
Cole Canyon 5910 .0 .0 * 27.3 25.2 108
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Basin Index (%) * 108
CHEYENNE RIVER BASIN
Blind Park 6890 .1 .0 * 30.8 27.5 112
North Rapid Creek 6130 .1 .0 * 31.8 27.1 117
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Basin Index (%) * 115
UPPER N. PLATTE
Arapaho Ridge 10960 .0 .0 * 44.6 38.2 117
Blackhall Mtn 9820 .0 -M * 52.6 -M *
Columbine 9160 .1 .0 * 49.3 38.0 130
Divide Peak 8880 .0 .0 * 37.5 33.7 111
Joe Wright 10120 .0 .0 * 54.7 44.0 124
Laprele Creek 8375 .2 .0 * 22.3 24.1 93
Med Bow 10500 .0 -M * 58.4 -M *
North French Creek 10130 .0 .0 * 52.4 43.0 122
Never Summer 10280 .1 .0 * 42.0 -M *
Old Battle 10000 .1 .0 * 54.6 51.6 106
Rawah 9020 .0 .0 * -M 27.0 *
Sage Creek Basin 7850 .2 .0 * 21.7 22.9 95
Sand Lake 10050 .0 .0 * 50.4 40.7 124
South Brush Creek 8440 .0 .0 * 25.6 27.4 93
Tower 10500 .0 .0 * 70.5 58.2 121
Webber Springs 9250 .0 .0 * 46.1 40.3 114
Willow Creek Pass 9540 .0 .0 * 31.4 25.8 122
Zirkel 9340 .0 .0 * 57.2 43.1 133
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Basin Index (%) * 116
SWEETWATER
Deer Park 9700 .0 .0 * 31.2 34.8 90
Larsen Creek 9000 .1 .0 * 23.7 -M *
South Pass 9040 .0 .0 * 22.4 29.3 76
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Basin Index (%) * 84
LOWER N. PLATTE
Casper Mtn. 7900 .0 .0 * 25.8 27.8 93
Laprele Creek 8375 .2 .0 * 22.3 24.1 93
Reno Hill 8400 .0 .0 * 33.6 28.6 117
Windy Peak 7900 .0 .0 * 24.9 22.8 109
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Basin Index (%) * 103
LARAMIE RIVER
Brooklyn Lake 10240 .0 .0 * 44.8 35.2 127
Cinnabar Park 9574 .0 .0 * 45.1 37.8 119
Crow Creek 8330 .0 .0 * 26.5 25.8 103
Deadman Hill 10220 .0 .0 * 40.0 30.9 129
Rawah 9020 .0 .0 * -M 27.0 *
Roach 9700 .1 .0 * -M 33.2 *
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Basin Index (%) * 121
S. PLATTE
Black Mountain 8920 .1 -M * 28.7 -M *
Crow Creek 8330 .0 .0 * 26.5 25.8 103
Deadman Hill 10220 .0 .0 * 40.0 30.9 129
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Basin Index (%) * 117
LITTLE SNAKE RIVER
Battle Mountain 7440 .0 .0 * 27.0 24.1 112
Divide Peak 8880 .0 .0 * 37.5 33.7 111
Elk River 8700 .0 .0 * 35.5 32.2 110
Little Snake River 8915 .3 .0 * 50.0 43.5 115
Old Battle 10000 .1 .0 * 54.6 51.6 106
Sage Creek Basin 7850 .2 .0 * 21.7 22.9 95
Sandstone RS 8150 .0 .0 * 26.6 29.2 91
Whiskey Park 8950 .2 .0 * 55.2 41.5 133
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Basin Index (%) * 111
UPPER GREEN RIVER
Big Sandy Opening 9080 .0 .0 * 23.2 24.0 97
Blind Bull Sum 8650 .0 .0 * 36.9 30.6 121
East Rim Divide 7930 .1 .0 * 25.7 19.8 130
Elkhart Park G.S. 9400 .2 .0 * 28.7 24.5 117
Gros Ventre Summit 8750 .0 .0 * 26.3 23.4 112
Gunsight Pass 9820 .0 .0 * 33.6 25.6 131
Kendall R.S. 7740 .1 .0 * 32.6 22.7 144
Loomis Park 8240 .1 .0 * 36.2 27.6 131
New Fork Lake 8340 .1 .0 * 23.3 20.1 116
Pocket Creek 9360 -M -M * 28.7 -M *
Snider Basin 8060 .2 .0 * 29.5 21.8 135
Spring Creek Divide 9000 .2 .0 * 46.0 35.6 129
Triple Peak 8500 .1 .0 * 51.7 37.9 136
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Basin Index (%) * 126
LOWER GREEN RIVER
Blacks Fork Jct 8870 .0 -M * 25.7 -M *
Buck Pasture 9700 .0 -M * 25.5 -M *
EF Blacks Fork GS 9360 .0 -M * 23.7 -M *
Hams Fork 7840 .3 .0 * 26.2 19.6 134
Hewinta 9519 -M .0 * -M 25.8 *
Hickerson Park 9145 .4 .0 * 22.5 21.5 105
Hole-in-Rock 9150 .0 .0 * 23.1 21.0 110
Indian Creek 9425 .0 .0 * 40.5 33.6 121
Kelley R.S. 8180 .4 .0 * 33.4 27.8 120
Spirit Lk 10235 .0 -M * 31.6 -M *
Steel Creek Park 10200 .0 .0 * 32.0 29.8 107
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Basin Index (%) * 116
UPPER BEAR RIVER
Bear River RS 8777 .0 -M * 24.6 -M *
Bug Lake 7950 .3 .0 * 34.7 29.6 117
Burts Miller Ranch 8000 .0 -M * 14.5 -M *
Chalk Creek #1 8993 .1 .0 * 31.4 40.0 78
Hayden Fork 9212 .1 .0 * 38.7 34.0 114
Kelley R.S. 8180 .4 .0 * 33.4 27.8 120
Lily Lake 9156 .0 .0 * 29.3 29.2 100
Monte Cristo 8960 .3 .0 * 43.4 39.0 111
Salt River Summit 7760 .0 .0 * 30.6 26.6 115
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Basin Index (%) * 107
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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.