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 3 , 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 8.3 7.4 112 9.7 10.3 94
Black Bear 8170 15.3 18.3 84 16.3 18.6 88
Blind Bull Sum 8650 14.0 9.4 149 10.4 9.6 108
Cottonwood Creek 7670 11.8 8.7 136 14.3 11.6 123
East Rim Divide 7930 7.4 4.5 164 7.1 5.7 125
Grand Targhee 9260 19.6 17.7 111 16.6 15.3 108
Granite Creek 6770 10.6 6.7 158 11.4 9.8 116
Grassy Lake 7265 14.0 13.2 106 15.0 17.7 85
Gros Ventre Summit 8750 8.2 6.3 130 6.6 6.3 105
Gunsight Pass 9820 7.2 6.3 114 7.4 6.7 110
Lewis Lake Divide 7850 13.2 13.6 97 15.8 17.4 91
Phillips Bench 8200 12.6 11.3 112 14.1 13.4 105
Salt River Summit 7760 6.0 5.0 120 7.9 7.8 101
Snake River Station 6920 9.4 6.7 140 11.3 11.4 99
Spring Creek Divide 9000 14.2 10.4 137 14.2 11.2 127
Thumb Divide 7980 6.3 6.4 98 7.5 9.2 82
Togwotee Pass 9580 12.4 11.3 110 13.4 11.9 113
Two Ocean Plateau 9240 14.3 12.9 111 12.7 13.2 96
Willow Creek 8380 12.9 11.3 114 16.2 16.1 101
Younts Peak 8350 -M 7.1 * -M 8.0 *
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Basin Index (%) 116 102
MADISON-GALLATIN
Black Bear 8170 15.3 18.3 84 16.3 18.6 88
Canyon 7870 6.4 5.7 112 7.5 8.1 93
Madison Plateau 7750 9.5 10.5 90 10.3 13.0 79
West Yellowstone 6700 4.5 4.8 94 5.9 7.3 81
Whiskey Creek 6800 6.1 7.0 87 7.8 10.2 76
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Basin Index (%) 90 84
YELLOWSTONE
Beartooth Lake 9360 11.7 10.2 115 11.4 9.4 121
Burnt Mtn 5880 4.0 1.9 211 6.9 6.9 100
Canyon 7870 6.4 5.7 112 7.5 8.1 93
Cole Creek 7850 6.1 6.4 95 5.0 6.5 77
Evening Star 9200 13.6 11.9 114 14.9 13.6 110
Fisher Creek 9100 15.9 15.4 103 14.9 15.5 96
Northeast Entrance 7350 6.0 4.3 140 8.4 6.3 133
Parker Peak 9400 12.0 10.2 118 11.6 8.7 133
Sylvan Lake 8420 8.4 9.4 89 10.7 11.5 93
Thumb Divide 7980 6.3 6.4 98 7.5 9.2 82
Two Ocean Plateau 9240 14.3 12.9 111 12.7 13.2 96
White Mill 8700 13.0 10.3 126 12.5 11.6 108
Wolverine 7650 7.8 5.0 156 7.8 6.4 122
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Basin Index (%) 114 104
WIND RIVER
Burroughs Creek 8750 7.9 6.4 123 9.2 7.9 116
Castle Creek 8400 5.0 -M * 5.1 -M *
Cold Springs 9630 4.3 3.2 134 5.2 5.1 102
Deer Park 9700 6.1 6.6 92 8.0 9.4 85
Hobbs Park 10100 5.4 6.7 81 6.3 6.4 98
Kirwin 9550 6.5 4.4 148 7.6 5.8 131
Little Warm 9370 5.7 4.6 124 6.9 6.3 110
Owl Creek 8975 2.7 2.6 104 4.6 2.9 159
South Pass 9040 5.9 6.8 87 6.5 8.6 76
St. Lawrence Alt 8620 2.4 3.2 75 3.4 4.4 77
Togwotee Pass 9580 12.4 11.3 110 13.4 11.9 113
Townsend Creek 8700 3.2 4.2 76 5.5 5.9 93
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Basin Index (%) 104 103
BIGHORN BASIN
Bald Mtn. 9380 7.9 8.8 90 6.7 8.1 83
Bear Trap Meadow 8200 3.7 2.6 142 4.1 4.3 95
Bone Springs Div 9350 6.4 7.4 86 5.9 7.3 81
Grave Springs 8550 3.6 3.5 103 3.6 5.2 69
Kirwin 9550 6.5 4.4 148 7.6 5.8 131
Marquette 8760 3.4 -M * 4.7 -M *
Middle Powder 7760 5.3 5.0 106 -M 6.1 *
Owl Creek 8975 2.7 2.6 104 4.6 2.9 159
Powder River Pass 9480 5.4 4.9 110 6.6 6.1 108
Shell Creek 9580 5.8 7.3 79 6.0 6.6 91
Timber Creek 7950 3.2 2.2 145 4.7 3.9 121
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Basin Index (%) 104 99
SHOSHONE RIVER
Blackwater 9780 11.5 10.7 107 11.2 10.2 110
Evening Star 9200 13.6 11.9 114 14.9 13.6 110
Marquette 8760 3.4 -M * 4.7 -M *
Sylvan Road 7120 6.5 5.7 114 9.3 9.3 100
Younts Peak 8350 -M 7.1 * -M 8.0 *
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Basin Index (%) 112 107
POWDER RIVER
Bear Trap Meadow 8200 3.7 2.6 142 4.1 4.3 95
Cloud Peak Reservoir 9860 6.5 6.4 102 7.0 6.4 109
Grave Springs 8550 3.6 3.5 103 3.6 5.2 69
Hansen Sawmill 8360 4.2 3.1 135 4.9 4.1 120
Middle Powder 7760 5.3 5.0 106 -M 6.1 *
Powder River Pass 9480 5.4 4.9 110 6.6 6.1 108
Soldier Park 8720 3.5 -M * 4.6 -M *
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Basin Index (%) 113 100
TONGUE RIVER
Big Goose 7990 4.2 3.8 111 5.0 5.4 93
Bone Springs Div 9350 6.4 7.4 86 5.9 7.3 81
Burgess Junction 7880 5.0 4.8 104 5.5 6.0 92
Dome Lake 8880 3.7 5.6 66 5.9 6.8 87
Little Goose 8870 4.4 -M * 5.7 -M *
Sucker Creek 8880 5.6 5.3 106 6.6 6.8 97
Tie Creek 6870 3.1 2.2 141 5.3 5.7 93
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Basin Index (%) 96 90
BELLE FOURCHE
Cole Canyon 5910 2.2 2.3 96 4.5 4.7 96
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Basin Index (%) 96 96
CHEYENNE RIVER BASIN
Blind Park 6890 3.1 3.3 94 4.7 6.1 77
North Rapid Creek 6130 3.8 3.2 119 5.6 5.1 110
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Basin Index (%) 106 92
UPPER N. PLATTE
Arapaho Ridge 10960 8.7 9.8 89 10.3 11.1 93
Blackhall Mtn 9820 10.8 -M * 13.8 -M *
Columbine 9160 10.2 9.0 113 12.1 11.8 103
Divide Peak 8880 4.8 8.8 55 7.4 10.6 70
Joe Wright 10120 9.0 9.6 94 14.4 12.3 117
Laprele Creek 8375 3.2 4.0 80 3.9 6.0 65
Med Bow 10500 15.2 -M * 14.9 -M *
North French Creek 10130 11.9 12.0 99 12.2 12.4 98
Never Summer 10280 8.4 9.0 93 9.3 -M *
Old Battle 10000 11.9 13.0 92 12.5 16.8 74
Rawah 9020 6.1 4.7 130 9.0 7.6 118
Sage Creek Basin 7850 4.6 6.1 75 4.5 7.8 58
Sand Lake 10050 11.4 12.2 93 10.4 11.5 90
South Brush Creek 8440 4.0 5.0 80 5.1 7.3 70
Tower 10500 17.2 18.9 91 18.9 18.8 101
Webber Springs 9250 8.4 9.9 85 10.0 12.8 78
Willow Creek Pass 9540 4.9 5.6 88 6.9 6.6 105
Zirkel 9340 -M 10.5 * -M 14.1 *
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Basin Index (%) 91 90
SWEETWATER
Deer Park 9700 6.1 6.6 92 8.0 9.4 85
Larsen Creek 9000 4.5 5.1 88 6.2 -M *
South Pass 9040 5.9 6.8 87 6.5 8.6 76
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Basin Index (%) 89 81
LOWER N. PLATTE
Casper Mtn. 7900 -M 6.0 * -M 7.5 *
Laprele Creek 8375 3.2 4.0 80 3.9 6.0 65
Reno Hill 8400 4.5 5.9 76 6.0 7.2 83
Windy Peak 7900 3.2 3.1 103 3.6 5.2 69
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Basin Index (%) 84 73
LARAMIE RIVER
Brooklyn Lake 10240 9.5 8.1 117 10.3 9.5 108
Cinnabar Park 9574 8.3 9.4 88 11.2 11.9 94
Crow Creek 8330 3.9 4.6 85 5.0 5.6 89
Deadman Hill 10220 7.4 7.3 101 8.2 7.9 104
Rawah 9020 6.1 4.7 130 9.0 7.6 118
Roach 9700 5.3 7.0 76 7.9 9.1 87
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Basin Index (%) 99 100
S. PLATTE
Black Mountain 8920 4.8 -M * 6.7 -M *
Crow Creek 8330 3.9 4.6 85 5.0 5.6 89
Deadman Hill 10220 7.4 7.3 101 8.2 7.9 104
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Basin Index (%) 95 98
LITTLE SNAKE RIVER
Battle Mountain 7440 4.2 4.4 95 6.2 7.2 86
Divide Peak 8880 4.8 8.8 55 7.4 10.6 70
Elk River 8700 7.0 7.1 99 8.3 9.3 89
Little Snake River 8915 10.9 9.3 117 15.4 15.2 101
Old Battle 10000 11.9 13.0 92 12.5 16.8 74
Sage Creek Basin 7850 4.6 6.1 75 4.5 7.8 58
Sandstone RS 8150 5.0 4.7 106 6.2 8.8 70
Whiskey Park 8950 11.8 9.8 120 12.6 12.5 101
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Basin Index (%) 95 83
UPPER GREEN RIVER
Big Sandy Opening 9080 6.4 6.2 103 6.2 6.5 95
Blind Bull Sum 8650 14.0 9.4 149 10.4 9.6 108
East Rim Divide 7930 7.4 4.5 164 7.1 5.7 125
Elkhart Park G.S. 9400 6.5 5.8 112 7.6 6.6 115
Gros Ventre Summit 8750 8.2 6.3 130 6.6 6.3 105
Gunsight Pass 9820 7.2 6.3 114 7.4 6.7 110
Kendall R.S. 7740 7.4 5.0 148 7.6 6.8 112
Loomis Park 8240 9.6 6.8 141 10.3 8.4 123
New Fork Lake 8340 6.9 4.7 147 6.8 5.3 128
Pocket Creek 9360 6.0 -M * 4.6 -M *
Snider Basin 8060 8.0 5.4 148 9.3 6.8 137
Spring Creek Divide 9000 14.2 10.4 137 14.2 11.2 127
Triple Peak 8500 14.2 8.6 165 15.6 11.4 137
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Basin Index (%) 139 119
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.1 -M * 5.0 -M *
Buck Pasture 9700 6.0 -M * 7.6 -M *
EF Blacks Fork GS 9360 3.8 -M * 5.3 -M *
Hams Fork 7840 5.9 4.7 126 5.7 5.4 106
Hewinta 9519 2.6 3.9 67 5.6 6.6 85
Hickerson Park 9145 3.8 2.9 131 4.5 5.0 90
Hole-in-Rock 9150 2.8 3.0 93 4.0 4.7 85
Indian Creek 9425 10.6 10.1 105 11.4 10.2 112
Kelley R.S. 8180 7.4 6.3 117 8.2 8.7 94
Spirit Lk 10235 4.5 -M * 6.2 -M *
Steel Creek Park 10200 5.3 6.3 84 6.6 7.7 86
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Basin Index (%) 103 95
UPPER BEAR RIVER
Bear River RS 8777 3.2 -M * 4.2 -M *
Bug Lake 7950 7.8 6.4 122 7.2 9.3 77
Burts Miller Ranch 8000 2.0 -M * 1.9 -M *
Chalk Creek #1 8993 7.8 9.9 79 8.1 11.9 68
Hayden Fork 9212 5.0 6.1 82 8.2 9.9 83
Kelley R.S. 8180 7.4 6.3 117 8.2 8.7 94
Lily Lake 9156 4.5 5.3 85 5.3 8.2 65
Monte Cristo 8960 11.2 10.3 109 10.5 12.2 86
Salt River Summit 7760 6.0 5.0 120 7.9 7.8 101
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Basin Index (%) 101 81
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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.