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: JANUARY 29 , 2015
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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 12.1 10.7 113 13.3 13.7 97
Black Bear 8170 20.6 23.1 89 21.3 24.4 87
Blind Bull Sum 8650 17.6 13.4 131 12.6 12.6 100
Cottonwood Creek 7670 15.3 12.3 124 17.9 15.5 115
East Rim Divide 7930 10.0 6.7 149 8.6 7.5 115
Grand Targhee 9260 27.8 23.3 119 22.3 20.3 110
Granite Creek 6770 -M 10.0 * -M 13.3 *
Grassy Lake 7265 21.0 19.5 108 21.6 23.4 92
Gros Ventre Summit 8750 9.0 8.2 110 7.4 8.0 92
Gunsight Pass 9820 8.7 8.1 107 8.7 8.7 100
Lewis Lake Divide 7850 17.5 19.3 91 20.4 22.7 90
Phillips Bench 8200 16.2 15.9 102 17.6 17.8 99
Salt River Summit 7760 -M 7.5 * -M 10.4 *
Snake River Station 6920 12.5 10.3 121 14.8 15.1 98
Spring Creek Divide 9000 17.9 13.8 130 17.6 15.0 117
Thumb Divide 7980 8.2 9.4 87 9.1 12.0 76
Togwotee Pass 9580 16.0 14.7 109 17.2 15.5 111
Two Ocean Plateau 9240 18.1 16.8 108 16.5 16.9 98
Willow Creek 8380 16.8 16.8 100 20.0 21.2 94
Younts Peak 8350 -M 9.2 * -M 10.3 *
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Basin Index (%) 109 99
MADISON-GALLATIN
Black Bear 8170 20.6 23.1 89 21.3 24.4 87
Canyon 7870 8.8 8.0 110 9.7 10.5 92
Madison Plateau 7750 12.4 14.0 89 12.8 17.1 75
West Yellowstone 6700 6.4 6.9 93 7.7 9.5 81
Whiskey Creek 6800 8.3 9.5 87 9.9 13.0 76
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Basin Index (%) 92 82
YELLOWSTONE
Beartooth Lake 9360 15.7 13.5 116 15.0 12.6 119
Burnt Mtn 5880 3.5 2.4 146 7.5 7.8 96
Canyon 7870 8.8 8.0 110 9.7 10.5 92
Cole Creek 7850 6.8 8.1 84 7.3 7.5 97
Evening Star 9200 19.0 15.8 120 20.1 17.6 114
Fisher Creek 9100 22.2 20.2 110 20.5 20.4 100
Northeast Entrance 7350 8.5 6.2 137 10.9 8.1 135
Parker Peak 9400 16.4 12.6 130 15.7 11.2 140
Sylvan Lake 8420 12.1 12.7 95 14.6 14.5 101
Thumb Divide 7980 8.2 9.4 87 9.1 12.0 76
Two Ocean Plateau 9240 18.1 16.8 108 16.5 16.9 98
White Mill 8700 18.3 14.2 129 17.4 15.1 115
Wolverine 7650 10.3 6.8 151 10.1 8.0 126
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Basin Index (%) 114 108
WIND RIVER
Burroughs Creek 8750 9.6 8.2 117 11.5 10.3 112
Castle Creek 8400 5.8 -M * 5.8 -M *
Cold Springs 9630 5.1 4.3 119 5.8 6.1 95
Deer Park 9700 6.3 8.9 71 8.8 12.0 73
Hobbs Park 10100 6.0 7.9 76 6.7 7.6 88
Kirwin 9550 7.4 5.7 130 8.9 7.1 125
Little Warm 9370 6.6 6.1 108 7.9 8.0 99
Owl Creek 8975 2.8 3.1 90 4.8 3.5 137
South Pass 9040 6.5 8.3 78 7.0 10.7 65
St. Lawrence Alt 8620 2.2 4.1 54 3.6 5.2 69
Togwotee Pass 9580 16.0 14.7 109 17.2 15.5 111
Townsend Creek 8700 3.5 5.0 70 5.9 6.9 86
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Basin Index (%) 94 95
BIGHORN BASIN
Bald Mtn. 9380 11.0 10.6 104 8.7 10.5 83
Bear Trap Meadow 8200 4.7 3.4 138 4.5 5.1 88
Bone Springs Div 9350 9.1 9.7 94 8.2 9.4 87
Grave Springs 8550 4.5 4.9 92 3.8 6.3 60
Kirwin 9550 7.4 5.7 130 8.9 7.1 125
Marquette 8760 3.1 -M * 4.9 -M *
Middle Powder 7760 6.3 6.2 102 5.3 7.2 74
Owl Creek 8975 2.8 3.1 90 4.8 3.5 137
Powder River Pass 9480 7.3 6.2 118 8.2 7.7 106
Shell Creek 9580 8.4 9.0 93 8.2 8.7 94
Timber Creek 7950 3.2 3.0 107 4.9 4.4 111
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Basin Index (%) 105 94
SHOSHONE RIVER
Blackwater 9780 14.2 14.4 99 14.2 13.0 109
Evening Star 9200 19.0 15.8 120 20.1 17.6 114
Marquette 8760 3.1 -M * 4.9 -M *
Sylvan Road 7120 9.4 7.7 122 12.3 11.6 106
Younts Peak 8350 -M 9.2 * -M 10.3 *
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Basin Index (%) 112 110
POWDER RIVER
Bear Trap Meadow 8200 4.7 3.4 138 4.5 5.1 88
Cloud Peak Reservoir 9860 8.6 8.1 106 8.3 7.8 106
Grave Springs 8550 4.5 4.9 92 3.8 6.3 60
Hansen Sawmill 8360 4.9 4.0 122 5.7 5.0 114
Middle Powder 7760 6.3 6.2 102 5.3 7.2 74
Powder River Pass 9480 7.3 6.2 118 8.2 7.7 106
Soldier Park 8720 4.2 -M * 5.5 -M *
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Basin Index (%) 111 92
TONGUE RIVER
Big Goose 7990 5.1 4.8 106 5.5 6.4 86
Bone Springs Div 9350 9.1 9.7 94 8.2 9.4 87
Burgess Junction 7880 6.5 6.5 100 6.3 7.3 86
Dome Lake 8880 6.8 6.6 103 6.6 8.2 80
Little Goose 8870 5.3 -M * 6.8 -M *
Sucker Creek 8880 7.2 7.0 103 7.5 8.5 88
Tie Creek 6870 3.7 3.3 112 6.3 6.9 91
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Basin Index (%) 101 87
BELLE FOURCHE
Cole Canyon 5910 2.9 3.2 91 5.3 5.6 95
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Basin Index (%) 91 95
CHEYENNE RIVER BASIN
Blind Park 6890 4.7 4.4 107 6.4 7.6 84
North Rapid Creek 6130 5.2 4.2 124 7.0 6.1 115
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Basin Index (%) 115 98
UPPER N. PLATTE
Arapaho Ridge 10960 9.7 12.8 76 11.1 13.8 80
Blackhall Mtn 9820 12.6 -M * 15.5 -M *
Columbine 9160 11.9 14.3 83 13.7 16.0 86
Divide Peak 8880 4.8 12.0 40 8.1 13.4 60
Joe Wright 10120 9.8 12.7 77 15.6 15.7 99
Laprele Creek 8375 4.1 5.3 77 4.6 7.4 62
Med Bow 10500 18.4 -M * 17.7 -M *
North French Creek 10130 14.4 15.8 91 14.8 16.6 89
Never Summer 10280 9.3 12.0 78 9.9 -M *
Old Battle 10000 13.3 18.8 71 14.0 21.9 64
Rawah 9020 6.3 6.0 105 9.5 9.0 106
Sage Creek Basin 7850 5.1 8.1 63 4.8 9.6 50
Sand Lake 10050 13.2 16.1 82 12.4 14.8 84
South Brush Creek 8440 5.2 7.2 72 6.4 9.4 68
Tower 10500 18.8 26.8 70 21.2 25.0 85
Webber Springs 9250 9.4 13.2 71 11.0 16.6 66
Willow Creek Pass 9540 5.1 7.2 71 7.2 8.1 89
Zirkel 9340 -M 17.9 * -M 18.3 *
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Basin Index (%) 75 78
SWEETWATER
Deer Park 9700 6.3 8.9 71 8.8 12.0 73
Larsen Creek 9000 4.8 7.1 68 6.7 -M *
South Pass 9040 6.5 8.3 78 7.0 10.7 65
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Basin Index (%) 72 70
LOWER N. PLATTE
Casper Mtn. 7900 -M 7.4 * -M 9.0 *
Laprele Creek 8375 4.1 5.3 77 4.6 7.4 62
Reno Hill 8400 5.8 7.6 76 7.1 8.8 81
Windy Peak 7900 3.6 4.1 88 3.9 6.2 63
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Basin Index (%) 79 70
LARAMIE RIVER
Brooklyn Lake 10240 11.8 11.9 99 12.4 12.6 98
Cinnabar Park 9574 9.7 12.9 75 13.5 15.6 87
Crow Creek 8330 3.0 5.7 53 5.5 6.4 86
Deadman Hill 10220 8.7 9.7 90 9.1 10.0 91
Rawah 9020 6.3 6.0 105 9.5 9.0 106
Roach 9700 6.1 9.8 62 8.8 11.6 76
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Basin Index (%) 81 90
S. PLATTE
Black Mountain 8920 5.3 -M * 7.2 -M *
Crow Creek 8330 3.0 5.7 53 5.5 6.4 86
Deadman Hill 10220 8.7 9.7 90 9.1 10.0 91
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Basin Index (%) 76 89
LITTLE SNAKE RIVER
Battle Mountain 7440 4.6 6.8 68 6.8 9.5 72
Divide Peak 8880 4.8 12.0 40 8.1 13.4 60
Elk River 8700 8.2 10.7 77 9.3 12.4 75
Little Snake River 8915 12.5 15.1 83 17.1 20.1 85
Old Battle 10000 13.3 18.8 71 14.0 21.9 64
Sage Creek Basin 7850 5.1 8.1 63 4.8 9.6 50
Sandstone RS 8150 4.6 7.8 59 6.6 11.7 56
Whiskey Park 8950 13.8 15.4 90 15.4 17.3 89
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Basin Index (%) 71 71
UPPER GREEN RIVER
Big Sandy Opening 9080 7.3 7.9 92 6.8 8.2 83
Blind Bull Sum 8650 17.6 13.4 131 12.6 12.6 100
East Rim Divide 7930 10.0 6.7 149 8.6 7.5 115
Elkhart Park G.S. 9400 7.6 7.3 104 8.5 8.3 102
Gros Ventre Summit 8750 9.0 8.2 110 7.4 8.0 92
Gunsight Pass 9820 8.7 8.1 107 8.7 8.7 100
Kendall R.S. 7740 9.1 7.8 117 9.0 9.0 100
Loomis Park 8240 11.6 9.3 125 12.1 11.0 110
New Fork Lake 8340 8.4 6.7 125 8.2 6.9 119
Pocket Creek 9360 5.7 -M * 4.4 -M *
Snider Basin 8060 10.1 7.3 138 11.1 9.0 123
Spring Creek Divide 9000 17.9 13.8 130 17.6 15.0 117
Triple Peak 8500 17.5 12.7 138 18.9 15.6 121
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Basin Index (%) 123 108
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.6 -M * 5.5 -M *
Buck Pasture 9700 6.7 -M * 8.4 -M *
EF Blacks Fork GS 9360 4.1 -M * 5.4 -M *
Hams Fork 7840 7.2 6.9 104 6.5 7.1 92
Hewinta 9519 3.4 5.3 64 6.2 8.5 73
Hickerson Park 9145 4.1 3.7 111 4.8 6.0 80
Hole-in-Rock 9150 3.3 3.9 85 4.3 5.6 77
Indian Creek 9425 13.5 14.2 95 13.2 13.7 96
Kelley R.S. 8180 9.1 8.8 103 10.1 11.4 89
Spirit Lk 10235 4.6 -M * 6.7 -M *
Steel Creek Park 10200 -M 8.4 * 7.2 9.7 74
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Basin Index (%) 95 84
UPPER BEAR RIVER
Bear River RS 8777 4.0 -M * 4.9 -M *
Bug Lake 7950 8.6 10.1 85 8.7 12.2 71
Burts Miller Ranch 8000 3.0 -M * 2.4 -M *
Chalk Creek #1 8993 9.4 13.2 71 9.7 15.4 63
Hayden Fork 9212 5.7 8.4 68 9.3 12.8 73
Kelley R.S. 8180 9.1 8.8 103 10.1 11.4 89
Lily Lake 9156 5.4 7.3 74 6.0 10.5 57
Monte Cristo 8960 12.7 15.5 82 12.2 16.0 76
Salt River Summit 7760 -M 7.5 * -M 10.4 *
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Basin Index (%) 80 72
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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.
