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: JANUARY 11 , 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 10.0 8.7 115 11.3 11.6 97
Black Bear 8170 18.1 19.8 91 19.1 20.5 93
Blind Bull Sum 8650 15.8 11.3 140 11.4 10.6 108
Cottonwood Creek 7670 13.7 9.4 146 16.4 13.1 125
East Rim Divide 7930 8.9 5.2 171 7.8 6.4 122
Grand Targhee 9260 23.8 20.6 116 19.3 17.5 110
Granite Creek 6770 12.0 7.7 156 12.6 11.0 115
Grassy Lake 7265 18.2 15.4 118 19.0 19.6 97
Gros Ventre Summit 8750 8.5 7.1 120 6.7 6.9 97
Gunsight Pass 9820 7.7 7.0 110 7.7 7.4 104
Lewis Lake Divide 7850 15.3 15.4 99 18.3 19.4 94
Phillips Bench 8200 14.3 13.3 108 15.7 15.0 105
Salt River Summit 7760 7.2 5.7 126 8.8 8.7 101
Snake River Station 6920 11.2 8.1 138 13.3 12.7 105
Spring Creek Divide 9000 16.3 11.1 147 16.1 12.7 127
Thumb Divide 7980 7.2 7.4 97 8.3 10.1 82
Togwotee Pass 9580 14.0 12.5 112 15.1 13.3 114
Two Ocean Plateau 9240 16.2 14.7 110 14.6 14.5 101
Willow Creek 8380 15.0 12.9 116 18.1 17.9 101
Younts Peak 8350 -M 7.7 * -M 8.8 *
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Basin Index (%) 119 104
MADISON-GALLATIN
Black Bear 8170 18.1 19.8 91 19.1 20.5 93
Canyon 7870 7.8 6.6 118 8.7 8.9 98
Madison Plateau 7750 11.4 11.3 101 11.7 14.4 81
West Yellowstone 6700 5.6 5.8 97 6.9 8.1 85
Whiskey Creek 6800 7.5 8.0 94 9.2 11.2 82
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Basin Index (%) 98 88
YELLOWSTONE
Beartooth Lake 9360 13.8 11.5 120 13.5 10.6 127
Burnt Mtn 5880 4.3 1.9 226 7.3 7.2 101
Canyon 7870 7.8 6.6 118 8.7 8.9 98
Cole Creek 7850 6.3 6.8 93 5.0 6.8 74
Evening Star 9200 16.5 13.3 124 18.0 15.1 119
Fisher Creek 9100 19.4 17.2 113 17.9 17.2 104
Northeast Entrance 7350 7.2 4.9 147 9.7 7.0 139
Parker Peak 9400 14.3 11.2 128 13.8 9.6 144
Sylvan Lake 8420 10.3 10.8 95 12.6 12.6 100
Thumb Divide 7980 7.2 7.4 97 8.3 10.1 82
Two Ocean Plateau 9240 16.2 14.7 110 14.6 14.5 101
White Mill 8700 15.6 11.8 132 14.9 12.9 116
Wolverine 7650 9.5 5.6 170 9.1 7.0 130
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Basin Index (%) 120 110
WIND RIVER
Burroughs Creek 8750 8.5 6.9 123 10.0 8.8 114
Castle Creek 8400 5.3 -M * 5.3 -M *
Cold Springs 9630 4.5 3.7 122 5.3 5.4 98
Deer Park 9700 5.7 7.0 81 8.1 10.3 79
Hobbs Park 10100 5.5 7.1 77 6.1 6.7 91
Kirwin 9550 6.8 4.9 139 8.2 6.3 130
Little Warm 9370 5.9 5.2 113 7.1 6.9 103
Owl Creek 8975 2.7 2.8 96 4.6 3.1 148
South Pass 9040 6.1 7.2 85 6.7 9.3 72
St. Lawrence Alt 8620 2.2 3.4 65 3.4 4.6 74
Togwotee Pass 9580 14.0 12.5 112 15.1 13.3 114
Townsend Creek 8700 3.3 4.2 79 5.7 6.2 92
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Basin Index (%) 100 99
BIGHORN BASIN
Bald Mtn. 9380 9.7 9.5 102 7.8 8.9 88
Bear Trap Meadow 8200 4.0 2.8 143 4.1 4.5 91
Bone Springs Div 9350 8.1 8.1 100 7.1 8.0 89
Grave Springs 8550 3.8 4.0 95 3.5 5.6 62
Kirwin 9550 6.8 4.9 139 8.2 6.3 130
Marquette 8760 3.2 -M * 4.7 -M *
Middle Powder 7760 5.6 5.6 100 -M 6.5 *
Owl Creek 8975 2.7 2.8 96 4.6 3.1 148
Powder River Pass 9480 6.5 5.6 116 7.5 6.7 112
Shell Creek 9580 7.5 7.7 97 7.5 7.3 103
Timber Creek 7950 3.2 2.3 139 4.7 4.1 115
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Basin Index (%) 109 101
SHOSHONE RIVER
Blackwater 9780 12.8 12.2 105 12.8 11.2 114
Evening Star 9200 16.5 13.3 124 18.0 15.1 119
Marquette 8760 3.2 -M * 4.7 -M *
Sylvan Road 7120 8.3 6.1 136 11.2 10.2 110
Younts Peak 8350 -M 7.7 * -M 8.8 *
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Basin Index (%) 119 115
POWDER RIVER
Bear Trap Meadow 8200 4.0 2.8 143 4.1 4.5 91
Cloud Peak Reservoir 9860 7.2 6.8 106 7.3 6.8 107
Grave Springs 8550 3.8 4.0 95 3.5 5.6 62
Hansen Sawmill 8360 4.6 3.4 135 5.3 4.4 120
Middle Powder 7760 5.6 5.6 100 -M 6.5 *
Powder River Pass 9480 6.5 5.6 116 7.5 6.7 112
Soldier Park 8720 3.9 -M * 4.9 -M *
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Basin Index (%) 112 99
TONGUE RIVER
Big Goose 7990 4.5 4.1 110 5.2 5.6 93
Bone Springs Div 9350 8.1 8.1 100 7.1 8.0 89
Burgess Junction 7880 5.5 5.2 106 5.6 6.4 88
Dome Lake 8880 5.8 5.8 100 6.0 7.2 83
Little Goose 8870 4.6 -M * 6.0 -M *
Sucker Creek 8880 6.0 5.9 102 6.7 7.3 92
Tie Creek 6870 3.3 2.4 138 5.6 6.1 92
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Basin Index (%) 105 89
BELLE FOURCHE
Cole Canyon 5910 3.0 2.5 120 5.1 5.0 102
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Basin Index (%) 120 102
CHEYENNE RIVER BASIN
Blind Park 6890 3.8 3.9 97 5.6 6.6 85
North Rapid Creek 6130 4.6 3.5 131 6.4 5.5 116
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Basin Index (%) 114 99
UPPER N. PLATTE
Arapaho Ridge 10960 9.2 10.8 85 10.7 12.3 87
Blackhall Mtn 9820 11.9 -M * 14.7 -M *
Columbine 9160 11.1 11.3 98 12.9 13.4 96
Divide Peak 8880 5.0 9.8 51 7.8 11.6 67
Joe Wright 10120 9.2 10.6 87 14.8 13.6 109
Laprele Creek 8375 3.5 4.6 76 4.1 6.5 63
Med Bow 10500 16.5 -M * 16.0 -M *
North French Creek 10130 12.9 13.2 98 13.2 13.9 95
Never Summer 10280 8.8 10.2 86 9.6 -M *
Old Battle 10000 12.8 15.0 85 13.3 18.6 72
Rawah 9020 6.1 5.2 117 9.2 8.2 112
Sage Creek Basin 7850 5.0 6.8 74 4.6 8.4 55
Sand Lake 10050 12.4 13.7 91 11.4 12.6 90
South Brush Creek 8440 4.5 5.7 79 5.6 8.0 70
Tower 10500 17.7 20.9 85 19.8 21.0 94
Webber Springs 9250 9.1 11.4 80 10.6 14.0 76
Willow Creek Pass 9540 5.1 6.0 85 7.0 7.2 97
Zirkel 9340 -M 13.9 * -M 16.0 *
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Basin Index (%) 85 86
SWEETWATER
Deer Park 9700 5.7 7.0 81 8.1 10.3 79
Larsen Creek 9000 4.2 5.7 74 6.3 -M *
South Pass 9040 6.1 7.2 85 6.7 9.3 72
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Basin Index (%) 80 76
LOWER N. PLATTE
Casper Mtn. 7900 -M 6.6 * -M 8.0 *
Laprele Creek 8375 3.5 4.6 76 4.1 6.5 63
Reno Hill 8400 5.0 6.5 77 6.4 7.8 82
Windy Peak 7900 3.4 3.3 103 3.7 5.6 66
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Basin Index (%) 83 71
LARAMIE RIVER
Brooklyn Lake 10240 10.7 9.9 108 11.3 10.5 108
Cinnabar Park 9574 8.7 11.2 78 12.4 13.6 91
Crow Creek 8330 3.9 4.9 80 5.1 5.9 86
Deadman Hill 10220 8.2 7.8 105 8.7 8.7 100
Rawah 9020 6.1 5.2 117 9.2 8.2 112
Roach 9700 5.7 8.1 70 8.4 10.0 84
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Basin Index (%) 92 97
S. PLATTE
Black Mountain 8920 5.0 -M * 6.9 -M *
Crow Creek 8330 3.9 4.9 80 5.1 5.9 86
Deadman Hill 10220 8.2 7.8 105 8.7 8.7 100
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Basin Index (%) 95 95
LITTLE SNAKE RIVER
Battle Mountain 7440 4.3 5.1 84 6.4 8.0 80
Divide Peak 8880 5.0 9.8 51 7.8 11.6 67
Elk River 8700 7.7 8.5 91 8.8 10.5 84
Little Snake River 8915 12.1 11.4 106 16.4 17.2 95
Old Battle 10000 12.8 15.0 85 13.3 18.6 72
Sage Creek Basin 7850 5.0 6.8 74 4.6 8.4 55
Sandstone RS 8150 5.0 5.9 85 6.4 9.9 65
Whiskey Park 8950 13.6 11.5 118 14.6 14.2 103
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Basin Index (%) 89 80
UPPER GREEN RIVER
Big Sandy Opening 9080 6.7 6.9 97 6.4 7.1 90
Blind Bull Sum 8650 15.8 11.3 140 11.4 10.6 108
East Rim Divide 7930 8.9 5.2 171 7.8 6.4 122
Elkhart Park G.S. 9400 7.0 6.1 115 7.9 7.2 110
Gros Ventre Summit 8750 8.5 7.1 120 6.7 6.9 97
Gunsight Pass 9820 7.7 7.0 110 7.7 7.4 104
Kendall R.S. 7740 8.2 5.9 139 8.3 7.6 109
Loomis Park 8240 10.6 7.2 147 11.2 9.3 120
New Fork Lake 8340 7.7 5.3 145 7.5 5.9 127
Pocket Creek 9360 5.8 -M * 4.6 -M *
Snider Basin 8060 9.2 6.1 151 10.4 7.6 137
Spring Creek Divide 9000 16.3 11.1 147 16.1 12.7 127
Triple Peak 8500 16.0 10.3 155 17.4 13.0 134
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Basin Index (%) 137 117
LOWER GREEN RIVER
Blacks Fork Jct 8870 3.3 -M * 5.1 -M *
Buck Pasture 9700 6.2 -M * 7.6 -M *
EF Blacks Fork GS 9360 4.0 -M * 5.3 -M *
Hams Fork 7840 6.5 5.3 123 6.0 6.1 98
Hewinta 9519 3.1 4.6 67 5.8 7.2 81
Hickerson Park 9145 3.9 3.1 126 4.6 5.4 85
Hole-in-Rock 9150 3.2 3.3 97 4.1 5.0 82
Indian Creek 9425 11.9 11.5 103 12.1 11.6 104
Kelley R.S. 8180 8.2 7.1 115 9.2 9.7 95
Spirit Lk 10235 4.5 -M * 6.2 -M *
Steel Creek Park 10200 3.6 6.8 53 6.7 8.4 80
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Basin Index (%) 97 91
UPPER BEAR RIVER
Bear River RS 8777 3.4 -M * 4.3 -M *
Bug Lake 7950 7.5 7.6 99 7.6 10.3 74
Burts Miller Ranch 8000 2.3 -M * 2.0 -M *
Chalk Creek #1 8993 8.0 11.1 72 8.2 13.1 63
Hayden Fork 9212 5.0 6.7 75 8.3 10.9 76
Kelley R.S. 8180 8.2 7.1 115 9.2 9.7 95
Lily Lake 9156 4.7 6.0 78 5.4 9.0 60
Monte Cristo 8960 11.3 12.7 89 10.7 13.6 79
Salt River Summit 7760 7.2 5.7 126 8.8 8.7 101
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Basin Index (%) 91 77
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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.