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: JANUARY 17 , 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 10.7 9.7 110 12.0 12.3 98
Black Bear 8170 18.8 20.9 90 19.5 21.7 90
Blind Bull Sum 8650 16.5 12.3 134 11.9 11.3 105
Cottonwood Creek 7670 14.4 10.6 136 17.0 13.9 122
East Rim Divide 7930 9.2 5.7 161 8.1 6.8 119
Grand Targhee 9260 25.9 21.2 122 20.9 18.0 116
Granite Creek 6770 12.4 8.7 143 12.9 11.8 109
Grassy Lake 7265 19.3 16.7 116 20.0 20.9 96
Gros Ventre Summit 8750 8.8 7.5 117 6.9 7.3 95
Gunsight Pass 9820 8.0 7.4 108 8.0 7.8 103
Lewis Lake Divide 7850 16.1 16.6 97 18.8 20.4 92
Phillips Bench 8200 15.1 15.0 101 16.5 16.0 103
Salt River Summit 7760 7.3 6.4 114 9.2 9.3 99
Snake River Station 6920 11.7 9.1 129 13.9 13.5 103
Spring Creek Divide 9000 17.0 12.2 139 16.7 13.6 123
Thumb Divide 7980 7.6 8.0 95 8.6 10.8 80
Togwotee Pass 9580 14.7 13.0 113 15.9 14.1 113
Two Ocean Plateau 9240 16.9 15.5 109 15.3 15.4 99
Willow Creek 8380 15.9 14.3 111 19.1 19.0 101
Younts Peak 8350 -M 8.5 * -M 9.4 *
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Basin Index (%) 115 103
MADISON-GALLATIN
Black Bear 8170 18.8 20.9 90 19.5 21.7 90
Canyon 7870 8.0 7.3 110 8.8 9.4 94
Madison Plateau 7750 11.6 12.5 93 12.0 15.2 79
West Yellowstone 6700 5.7 6.3 90 7.1 8.4 85
Whiskey Creek 6800 7.6 8.4 90 9.3 11.8 79
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Basin Index (%) 93 85
YELLOWSTONE
Beartooth Lake 9360 14.3 12.5 114 13.6 11.3 120
Burnt Mtn 5880 4.5 2.2 205 7.5 7.4 101
Canyon 7870 8.0 7.3 110 8.8 9.4 94
Cole Creek 7850 6.4 7.2 89 4.9 7.1 69
Evening Star 9200 17.1 14.1 121 18.4 15.9 116
Fisher Creek 9100 19.9 18.4 108 18.3 18.2 101
Northeast Entrance 7350 7.5 5.4 139 9.8 7.4 132
Parker Peak 9400 14.8 11.6 128 14.1 10.1 140
Sylvan Lake 8420 10.8 11.2 96 13.1 13.2 99
Thumb Divide 7980 7.6 8.0 95 8.6 10.8 80
Two Ocean Plateau 9240 16.9 15.5 109 15.3 15.4 99
White Mill 8700 16.1 12.8 126 15.3 13.7 112
Wolverine 7650 9.7 6.0 162 9.3 7.4 126
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Basin Index (%) 116 107
WIND RIVER
Burroughs Creek 8750 8.9 7.4 120 10.5 9.4 112
Castle Creek 8400 5.5 -M * 5.5 -M *
Cold Springs 9630 4.8 4.1 117 5.2 5.7 91
Deer Park 9700 6.0 7.3 82 8.2 10.9 75
Hobbs Park 10100 5.8 7.3 79 6.1 7.0 87
Kirwin 9550 6.9 5.3 130 8.3 6.6 126
Little Warm 9370 6.2 5.6 111 7.2 7.3 99
Owl Creek 8975 2.7 2.9 93 4.5 3.3 136
South Pass 9040 6.2 7.8 79 6.7 9.8 68
St. Lawrence Alt 8620 2.2 3.5 63 3.3 4.9 67
Togwotee Pass 9580 14.7 13.0 113 15.9 14.1 113
Townsend Creek 8700 3.4 4.4 77 5.7 6.5 88
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Basin Index (%) 99 95
BIGHORN BASIN
Bald Mtn. 9380 9.9 9.9 100 8.0 9.6 83
Bear Trap Meadow 8200 4.3 2.9 148 4.3 4.7 91
Bone Springs Div 9350 8.2 8.7 94 7.2 8.5 85
Grave Springs 8550 3.9 4.4 89 3.5 5.8 60
Kirwin 9550 6.9 5.3 130 8.3 6.6 126
Marquette 8760 3.1 -M * 4.7 -M *
Middle Powder 7760 5.7 6.0 95 -M 6.8 *
Owl Creek 8975 2.7 2.9 93 4.5 3.3 136
Powder River Pass 9480 6.8 5.8 117 7.7 7.0 110
Shell Creek 9580 7.7 8.4 92 7.6 7.8 97
Timber Creek 7950 3.2 2.6 123 4.8 4.2 114
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Basin Index (%) 104 97
SHOSHONE RIVER
Blackwater 9780 13.3 13.0 102 13.0 11.8 110
Evening Star 9200 17.1 14.1 121 18.4 15.9 116
Marquette 8760 3.1 -M * 4.7 -M *
Sylvan Road 7120 8.6 6.8 126 11.5 10.7 107
Younts Peak 8350 -M 8.5 * -M 9.4 *
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Basin Index (%) 115 112
POWDER RIVER
Bear Trap Meadow 8200 4.3 2.9 148 4.3 4.7 91
Cloud Peak Reservoir 9860 7.2 7.3 99 7.3 7.1 103
Grave Springs 8550 3.9 4.4 89 3.5 5.8 60
Hansen Sawmill 8360 4.6 3.5 131 5.4 4.6 117
Middle Powder 7760 5.7 6.0 95 -M 6.8 *
Powder River Pass 9480 6.8 5.8 117 7.7 7.0 110
Soldier Park 8720 3.9 -M * 4.9 -M *
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Basin Index (%) 109 97
TONGUE RIVER
Big Goose 7990 4.6 4.3 107 5.2 5.9 88
Bone Springs Div 9350 8.2 8.7 94 7.2 8.5 85
Burgess Junction 7880 5.6 5.9 95 5.7 6.8 84
Dome Lake 8880 5.9 6.2 95 6.0 7.6 79
Little Goose 8870 4.7 -M * 6.0 -M *
Sucker Creek 8880 6.1 6.4 95 6.8 7.8 87
Tie Creek 6870 3.4 2.8 121 5.7 6.5 88
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Basin Index (%) 99 85
BELLE FOURCHE
Cole Canyon 5910 3.0 2.7 111 5.1 5.2 98
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Basin Index (%) 111 98
CHEYENNE RIVER BASIN
Blind Park 6890 4.0 4.1 98 5.6 7.0 80
North Rapid Creek 6130 4.6 3.7 124 6.5 5.7 114
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Basin Index (%) 110 95
UPPER N. PLATTE
Arapaho Ridge 10960 9.4 11.2 84 10.8 12.8 84
Blackhall Mtn 9820 12.1 -M * 15.1 -M *
Columbine 9160 11.3 12.5 90 13.2 14.2 93
Divide Peak 8880 5.1 10.5 49 8.1 12.1 67
Joe Wright 10120 9.2 11.4 81 15.2 14.2 107
Laprele Creek 8375 3.8 5.0 76 4.3 6.8 63
Med Bow 10500 17.0 -M * 16.4 -M *
North French Creek 10130 13.5 14.0 96 13.8 14.8 93
Never Summer 10280 8.9 10.6 84 9.7 -M *
Old Battle 10000 13.1 15.8 83 13.6 19.7 69
Rawah 9020 6.3 5.5 115 9.4 8.5 111
Sage Creek Basin 7850 5.1 7.3 70 4.8 8.7 55
Sand Lake 10050 12.7 14.5 88 11.6 13.4 87
South Brush Creek 8440 4.9 6.2 79 6.0 8.5 71
Tower 10500 18.3 22.9 80 20.4 22.3 91
Webber Springs 9250 9.2 12.0 77 10.8 15.0 72
Willow Creek Pass 9540 5.1 6.3 81 7.1 7.4 96
Zirkel 9340 -M 15.9 * -M 16.7 *
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Basin Index (%) 82 84
SWEETWATER
Deer Park 9700 6.0 7.3 82 8.2 10.9 75
Larsen Creek 9000 4.5 6.1 74 6.5 -M *
South Pass 9040 6.2 7.8 79 6.7 9.8 68
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Basin Index (%) 79 72
LOWER N. PLATTE
Casper Mtn. 7900 -M 6.8 * -M 8.2 *
Laprele Creek 8375 3.8 5.0 76 4.3 6.8 63
Reno Hill 8400 5.2 6.7 78 6.6 8.1 81
Windy Peak 7900 3.5 3.7 95 3.7 5.8 64
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Basin Index (%) 81 71
LARAMIE RIVER
Brooklyn Lake 10240 10.9 10.9 100 11.5 11.2 103
Cinnabar Park 9574 9.1 11.7 78 12.6 14.3 88
Crow Creek 8330 3.6 5.1 71 5.3 6.0 88
Deadman Hill 10220 8.4 8.3 101 8.9 9.1 98
Rawah 9020 6.3 5.5 115 9.4 8.5 111
Roach 9700 5.8 8.8 66 8.4 10.5 80
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Basin Index (%) 88 94
S. PLATTE
Black Mountain 8920 5.1 -M * 6.9 -M *
Crow Creek 8330 3.6 5.1 71 5.3 6.0 88
Deadman Hill 10220 8.4 8.3 101 8.9 9.1 98
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Basin Index (%) 90 94
LITTLE SNAKE RIVER
Battle Mountain 7440 4.6 5.7 81 6.7 8.6 78
Divide Peak 8880 5.1 10.5 49 8.1 12.1 67
Elk River 8700 7.8 9.4 83 9.1 11.2 81
Little Snake River 8915 12.5 12.4 101 16.8 17.9 94
Old Battle 10000 13.1 15.8 83 13.6 19.7 69
Sage Creek Basin 7850 5.1 7.3 70 4.8 8.7 55
Sandstone RS 8150 5.1 6.9 74 6.5 10.5 62
Whiskey Park 8950 14.0 13.5 104 14.8 15.3 97
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Basin Index (%) 83 77
UPPER GREEN RIVER
Big Sandy Opening 9080 6.9 7.0 99 6.5 7.4 88
Blind Bull Sum 8650 16.5 12.3 134 11.9 11.3 105
East Rim Divide 7930 9.2 5.7 161 8.1 6.8 119
Elkhart Park G.S. 9400 7.2 6.5 111 7.9 7.6 104
Gros Ventre Summit 8750 8.8 7.5 117 6.9 7.3 95
Gunsight Pass 9820 8.0 7.4 108 8.0 7.8 103
Kendall R.S. 7740 8.4 6.6 127 8.5 8.1 105
Loomis Park 8240 10.9 7.9 138 11.4 9.9 115
New Fork Lake 8340 8.0 5.7 140 7.7 6.2 124
Pocket Creek 9360 5.9 -M * 4.6 -M *
Snider Basin 8060 9.6 6.4 150 10.6 8.1 131
Spring Creek Divide 9000 17.0 12.2 139 16.7 13.6 123
Triple Peak 8500 16.7 11.4 146 18.1 13.9 130
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Basin Index (%) 132 113
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.5 -M * 5.4 -M *
Buck Pasture 9700 6.9 -M * 8.2 -M *
EF Blacks Fork GS 9360 4.3 -M * 5.6 -M *
Hams Fork 7840 6.7 5.8 116 6.1 6.4 95
Hewinta 9519 3.8 4.9 78 6.1 7.6 80
Hickerson Park 9145 4.0 3.2 125 4.7 5.6 84
Hole-in-Rock 9150 3.3 3.4 97 4.3 5.2 83
Indian Creek 9425 12.4 12.5 99 12.4 12.3 101
Kelley R.S. 8180 8.5 7.5 113 9.4 10.2 92
Spirit Lk 10235 4.8 -M * 6.8 -M *
Steel Creek Park 10200 3.1 7.4 42 7.1 8.8 81
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Basin Index (%) 94 89
UPPER BEAR RIVER
Bear River RS 8777 3.8 -M * 4.8 -M *
Bug Lake 7950 7.9 8.7 91 8.0 10.9 73
Burts Miller Ranch 8000 3.2 -M * 2.5 -M *
Chalk Creek #1 8993 9.5 11.7 81 9.6 13.8 70
Hayden Fork 9212 5.4 7.3 74 9.1 11.5 79
Kelley R.S. 8180 8.5 7.5 113 9.4 10.2 92
Lily Lake 9156 5.2 6.5 80 5.9 9.5 62
Monte Cristo 8960 12.3 13.7 90 11.6 14.4 81
Salt River Summit 7760 7.3 6.4 114 9.2 9.3 99
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Basin Index (%) 91 79
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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.