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: JANUARY 19 , 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 11.8 9.8 120 12.9 12.4 104
Black Bear 8170 19.5 21.3 92 20.2 21.9 92
Blind Bull Sum 8650 17.3 12.5 138 12.4 11.6 107
Cottonwood Creek 7670 14.9 10.9 137 17.5 14.2 123
East Rim Divide 7930 9.7 5.9 164 8.5 6.9 123
Grand Targhee 9260 26.8 21.4 125 21.7 18.1 120
Granite Creek 6770 13.1 9.0 146 13.2 12.0 110
Grassy Lake 7265 20.0 17.2 116 20.7 21.2 98
Gros Ventre Summit 8750 8.9 7.6 117 7.2 7.4 97
Gunsight Pass 9820 8.5 7.6 112 8.5 8.0 106
Lewis Lake Divide 7850 17.2 17.0 101 19.9 20.7 96
Phillips Bench 8200 15.9 15.3 104 17.3 16.2 107
Salt River Summit 7760 7.7 6.6 117 9.4 9.5 99
Snake River Station 6920 12.2 9.3 131 14.5 13.7 106
Spring Creek Divide 9000 17.6 12.5 141 17.3 13.8 125
Thumb Divide 7980 7.9 8.2 96 8.9 10.9 82
Togwotee Pass 9580 15.4 13.1 118 16.6 14.3 116
Two Ocean Plateau 9240 17.7 15.6 113 15.8 15.6 101
Willow Creek 8380 16.4 14.8 111 19.6 19.3 102
Younts Peak 8350 -M 8.7 * -M 9.5 *
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Basin Index (%) 118 105
MADISON-GALLATIN
Black Bear 8170 19.5 21.3 92 20.2 21.9 92
Canyon 7870 8.4 7.4 114 9.2 9.5 97
Madison Plateau 7750 12.0 13.0 92 12.4 15.4 81
West Yellowstone 6700 6.1 6.5 94 7.4 8.5 87
Whiskey Creek 6800 7.9 8.6 92 9.6 11.9 81
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Basin Index (%) 95 88
YELLOWSTONE
Beartooth Lake 9360 15.0 12.6 119 14.4 11.5 125
Burnt Mtn 5880 4.4 2.3 191 7.4 7.4 100
Canyon 7870 8.4 7.4 114 9.2 9.5 97
Cole Creek 7850 6.4 7.4 86 4.9 7.1 69
Evening Star 9200 18.3 14.3 128 19.4 16.2 120
Fisher Creek 9100 21.1 18.8 112 19.3 18.5 104
Northeast Entrance 7350 7.9 5.5 144 10.3 7.5 137
Parker Peak 9400 15.5 11.8 131 14.8 10.3 144
Sylvan Lake 8420 11.2 11.4 98 13.7 13.4 102
Thumb Divide 7980 7.9 8.2 96 8.9 10.9 82
Two Ocean Plateau 9240 17.7 15.6 113 15.8 15.6 101
White Mill 8700 17.5 13.2 133 16.6 13.9 119
Wolverine 7650 10.3 6.1 169 9.8 7.5 131
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Basin Index (%) 120 110
WIND RIVER
Burroughs Creek 8750 9.4 7.5 125 11.1 9.5 117
Castle Creek 8400 5.6 -M * 5.7 -M *
Cold Springs 9630 5.0 4.2 119 5.4 5.8 93
Deer Park 9700 6.2 7.6 82 8.5 11.2 76
Hobbs Park 10100 5.9 7.4 80 6.3 7.2 88
Kirwin 9550 7.3 5.3 138 8.7 6.7 130
Little Warm 9370 6.4 5.7 112 7.4 7.4 100
Owl Creek 8975 2.8 3.0 93 4.6 3.3 139
South Pass 9040 6.4 8.0 80 6.8 9.9 69
St. Lawrence Alt 8620 2.3 3.6 64 3.5 4.9 71
Togwotee Pass 9580 15.4 13.1 118 16.6 14.3 116
Townsend Creek 8700 3.5 4.5 78 5.9 6.6 89
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Basin Index (%) 101 98
BIGHORN BASIN
Bald Mtn. 9380 10.0 10.0 100 8.1 9.7 84
Bear Trap Meadow 8200 4.4 3.0 147 4.3 4.7 91
Bone Springs Div 9350 8.3 8.9 93 7.4 8.7 85
Grave Springs 8550 3.9 4.5 87 3.5 5.9 59
Kirwin 9550 7.3 5.3 138 8.7 6.7 130
Marquette 8760 3.1 -M * 5.1 -M *
Middle Powder 7760 5.7 6.0 95 -M 6.8 *
Owl Creek 8975 2.8 3.0 93 4.6 3.3 139
Powder River Pass 9480 6.8 5.8 117 7.8 7.1 110
Shell Creek 9580 7.8 8.5 92 7.7 7.9 97
Timber Creek 7950 3.2 2.8 114 4.8 4.3 112
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Basin Index (%) 104 98
SHOSHONE RIVER
Blackwater 9780 13.8 13.0 106 13.7 12.0 114
Evening Star 9200 18.3 14.3 128 19.4 16.2 120
Marquette 8760 3.1 -M * 5.1 -M *
Sylvan Road 7120 8.9 7.0 127 11.9 10.8 110
Younts Peak 8350 -M 8.7 * -M 9.5 *
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Basin Index (%) 120 115
POWDER RIVER
Bear Trap Meadow 8200 4.4 3.0 147 4.3 4.7 91
Cloud Peak Reservoir 9860 7.4 7.5 99 7.4 7.3 101
Grave Springs 8550 3.9 4.5 87 3.5 5.9 59
Hansen Sawmill 8360 4.6 3.6 128 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 7.8 7.1 110
Soldier Park 8720 4.0 -M * 5.0 -M *
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Basin Index (%) 108 96
TONGUE RIVER
Big Goose 7990 4.6 4.4 105 5.3 6.0 88
Bone Springs Div 9350 8.3 8.9 93 7.4 8.7 85
Burgess Junction 7880 5.7 6.1 93 5.8 6.9 84
Dome Lake 8880 6.0 6.3 95 6.1 7.7 79
Little Goose 8870 4.8 -M * 6.2 -M *
Sucker Creek 8880 6.2 6.5 95 6.9 7.9 87
Tie Creek 6870 3.4 2.9 117 5.7 6.6 86
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Basin Index (%) 97 85
BELLE FOURCHE
Cole Canyon 5910 3.0 2.9 103 5.1 5.3 96
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Basin Index (%) 103 96
CHEYENNE RIVER BASIN
Blind Park 6890 3.9 4.1 95 5.7 7.1 80
North Rapid Creek 6130 4.7 3.8 124 6.5 5.8 112
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Basin Index (%) 109 95
UPPER N. PLATTE
Arapaho Ridge 10960 9.5 11.2 85 10.9 12.9 84
Blackhall Mtn 9820 12.2 -M * 15.1 -M *
Columbine 9160 11.4 12.7 90 13.3 14.5 92
Divide Peak 8880 5.1 10.8 47 8.1 12.4 65
Joe Wright 10120 9.3 11.7 79 15.3 14.4 106
Laprele Creek 8375 3.9 5.1 76 4.3 6.9 62
Med Bow 10500 17.6 -M * 16.8 -M *
North French Creek 10130 13.9 14.3 97 14.1 15.0 94
Never Summer 10280 9.0 10.8 83 9.6 -M *
Old Battle 10000 13.2 16.1 82 13.9 20.1 69
Rawah 9020 6.2 5.6 111 9.4 8.5 111
Sage Creek Basin 7850 5.1 7.4 69 4.8 8.8 55
Sand Lake 10050 12.8 14.7 87 11.9 13.6 88
South Brush Creek 8440 5.1 6.3 81 6.2 8.6 72
Tower 10500 18.4 23.6 78 20.5 22.7 90
Webber Springs 9250 9.4 12.1 78 10.9 15.2 72
Willow Creek Pass 9540 5.1 6.4 80 7.1 7.5 95
Zirkel 9340 -M 16.0 * -M 16.8 *
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Basin Index (%) 81 83
SWEETWATER
Deer Park 9700 6.2 7.6 82 8.5 11.2 76
Larsen Creek 9000 4.7 6.3 75 6.7 -M *
South Pass 9040 6.4 8.0 80 6.8 9.9 69
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Basin Index (%) 79 73
LOWER N. PLATTE
Casper Mtn. 7900 -M 6.8 * -M 8.3 *
Laprele Creek 8375 3.9 5.1 76 4.3 6.9 62
Reno Hill 8400 5.3 6.8 78 6.6 8.2 80
Windy Peak 7900 3.6 3.8 95 3.8 5.9 64
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Basin Index (%) 82 70
LARAMIE RIVER
Brooklyn Lake 10240 11.2 11.1 101 11.8 11.4 104
Cinnabar Park 9574 9.3 11.7 79 12.8 14.4 89
Crow Creek 8330 3.5 5.2 67 5.3 6.1 87
Deadman Hill 10220 8.5 8.5 100 8.9 9.3 96
Rawah 9020 6.2 5.6 111 9.4 8.5 111
Roach 9700 5.8 9.0 64 8.5 10.7 79
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Basin Index (%) 87 94
S. PLATTE
Black Mountain 8920 5.1 -M * 7.0 -M *
Crow Creek 8330 3.5 5.2 67 5.3 6.1 87
Deadman Hill 10220 8.5 8.5 100 8.9 9.3 96
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Basin Index (%) 88 92
LITTLE SNAKE RIVER
Battle Mountain 7440 4.7 5.9 80 6.7 8.7 77
Divide Peak 8880 5.1 10.8 47 8.1 12.4 65
Elk River 8700 8.0 9.6 83 9.1 11.4 80
Little Snake River 8915 12.6 12.6 100 16.9 18.2 93
Old Battle 10000 13.2 16.1 82 13.9 20.1 69
Sage Creek Basin 7850 5.1 7.4 69 4.8 8.8 55
Sandstone RS 8150 5.0 7.1 70 6.5 10.7 61
Whiskey Park 8950 14.1 14.2 99 15.0 15.7 96
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Basin Index (%) 81 76
UPPER GREEN RIVER
Big Sandy Opening 9080 7.2 7.0 103 6.6 7.6 87
Blind Bull Sum 8650 17.3 12.5 138 12.4 11.6 107
East Rim Divide 7930 9.7 5.9 164 8.5 6.9 123
Elkhart Park G.S. 9400 7.6 6.7 113 8.2 7.7 106
Gros Ventre Summit 8750 8.9 7.6 117 7.2 7.4 97
Gunsight Pass 9820 8.5 7.6 112 8.5 8.0 106
Kendall R.S. 7740 8.9 6.7 133 9.0 8.2 110
Loomis Park 8240 11.5 8.2 140 11.8 10.1 117
New Fork Lake 8340 8.4 5.9 142 8.1 6.4 127
Pocket Creek 9360 6.0 -M * 4.7 -M *
Snider Basin 8060 9.9 6.5 152 11.0 8.2 134
Spring Creek Divide 9000 17.6 12.5 141 17.3 13.8 125
Triple Peak 8500 17.4 11.6 150 18.8 14.2 132
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Basin Index (%) 135 116
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.7 -M * 5.5 -M *
Buck Pasture 9700 6.8 -M * 8.3 -M *
EF Blacks Fork GS 9360 4.3 -M * 5.6 -M *
Hams Fork 7840 6.9 6.1 113 6.3 6.6 95
Hewinta 9519 4.0 5.0 80 6.1 7.8 78
Hickerson Park 9145 4.0 3.2 125 4.7 5.7 82
Hole-in-Rock 9150 3.4 3.6 94 4.3 5.3 81
Indian Creek 9425 12.9 13.0 99 12.8 12.5 102
Kelley R.S. 8180 8.7 7.7 113 9.7 10.4 93
Spirit Lk 10235 4.7 -M * 6.6 -M *
Steel Creek Park 10200 3.2 7.5 43 7.2 8.9 81
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Basin Index (%) 93 89
UPPER BEAR RIVER
Bear River RS 8777 3.8 -M * 4.8 -M *
Bug Lake 7950 7.9 8.9 89 8.1 11.1 73
Burts Miller Ranch 8000 3.2 -M * 2.5 -M *
Chalk Creek #1 8993 9.4 11.9 79 9.6 14.0 69
Hayden Fork 9212 5.4 7.5 72 9.1 11.7 78
Kelley R.S. 8180 8.7 7.7 113 9.7 10.4 93
Lily Lake 9156 5.2 6.6 79 5.9 9.6 61
Monte Cristo 8960 12.4 13.8 90 11.6 14.6 79
Salt River Summit 7760 7.7 6.6 117 9.4 9.5 99
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Basin Index (%) 90 78
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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.