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 TUESDAY: DECEMBER 30 , 2014
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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 8.2 7.0 117 9.4 9.8 96
Black Bear 8170 14.9 17.2 87 15.8 17.4 91
Blind Bull Sum 8650 13.8 8.9 155 9.9 9.1 109
Cottonwood Creek 7670 11.5 8.2 140 14.3 10.9 131
East Rim Divide 7930 7.3 4.2 174 6.8 5.4 126
Grand Targhee 9260 19.3 17.3 112 16.1 14.6 110
Granite Creek 6770 10.6 6.2 171 11.2 9.2 122
Grassy Lake 7265 13.7 12.2 112 14.6 16.6 88
Gros Ventre Summit 8750 8.1 6.0 135 6.3 6.0 105
Gunsight Pass 9820 7.0 5.9 119 6.9 6.3 110
Lewis Lake Divide 7850 13.0 12.9 101 15.5 16.5 94
Phillips Bench 8200 12.4 10.6 117 13.8 12.5 110
Salt River Summit 7760 -M 4.7 * -M 7.3 *
Snake River Station 6920 9.3 6.0 155 11.2 10.8 104
Spring Creek Divide 9000 14.0 9.7 144 13.9 10.5 132
Thumb Divide 7980 6.1 6.0 102 7.2 8.5 85
Togwotee Pass 9580 12.1 10.8 112 13.1 11.2 117
Two Ocean Plateau 9240 14.2 12.2 116 12.3 12.4 99
Willow Creek 8380 12.8 10.4 123 16.1 15.2 106
Younts Peak 8350 -M 6.9 * -M 7.6 *
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Basin Index (%) 121 106
MADISON-GALLATIN
Black Bear 8170 14.9 17.2 87 15.8 17.4 91
Canyon 7870 6.5 5.2 125 7.2 7.7 94
Madison Plateau 7750 9.5 10.1 94 10.3 12.1 85
West Yellowstone 6700 4.2 4.5 93 5.8 6.9 84
Whiskey Creek 6800 6.1 6.4 95 7.7 9.5 81
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Basin Index (%) 95 87
YELLOWSTONE
Beartooth Lake 9360 11.4 9.7 118 10.6 9.0 118
Burnt Mtn 5880 3.9 1.9 205 6.7 6.7 100
Canyon 7870 6.5 5.2 125 7.2 7.7 94
Cole Creek 7850 6.3 6.3 100 4.5 6.3 71
Evening Star 9200 13.2 11.0 120 14.5 12.9 112
Fisher Creek 9100 15.5 14.3 108 14.3 14.7 97
Northeast Entrance 7350 5.9 3.8 155 8.3 6.0 138
Parker Peak 9400 11.8 9.6 123 11.2 8.3 135
Sylvan Lake 8420 8.4 9.0 93 10.4 10.9 95
Thumb Divide 7980 6.1 6.0 102 7.2 8.5 85
Two Ocean Plateau 9240 14.2 12.2 116 12.3 12.4 99
White Mill 8700 12.9 9.6 134 12.0 11.1 108
Wolverine 7650 7.8 4.6 170 7.3 6.1 120
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Basin Index (%) 120 105
WIND RIVER
Burroughs Creek 8750 7.7 6.1 126 8.5 7.6 112
Castle Creek 8400 4.7 -M * 4.5 -M *
Cold Springs 9630 4.0 3.1 129 4.0 4.9 82
Deer Park 9700 5.9 6.6 89 7.4 8.6 86
Hobbs Park 10100 5.2 6.4 81 5.4 6.1 89
Kirwin 9550 6.2 4.3 144 6.8 5.5 124
Little Warm 9370 5.6 4.4 127 6.3 6.1 103
Owl Creek 8975 2.4 2.5 96 4.1 2.8 146
South Pass 9040 5.6 6.5 86 6.0 8.1 74
St. Lawrence Alt 8620 1.8 3.0 60 3.2 4.2 76
Togwotee Pass 9580 12.1 10.8 112 13.1 11.2 117
Townsend Creek 8700 2.9 4.0 72 4.5 5.7 79
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Basin Index (%) 103 98
BIGHORN BASIN
Bald Mtn. 9380 7.6 8.2 93 6.3 7.8 81
Bear Trap Meadow 8200 3.5 2.5 140 3.4 4.2 81
Bone Springs Div 9350 6.4 7.2 89 5.3 7.0 76
Grave Springs 8550 3.4 3.2 106 3.5 5.0 70
Kirwin 9550 6.2 4.3 144 6.8 5.5 124
Marquette 8760 3.0 -M * 4.5 -M *
Middle Powder 7760 5.1 4.8 106 -M 6.0 *
Owl Creek 8975 2.4 2.5 96 4.1 2.8 146
Powder River Pass 9480 5.4 4.6 117 6.1 5.8 105
Shell Creek 9580 5.6 7.1 79 5.8 6.4 91
Timber Creek 7950 3.0 2.1 143 4.6 3.9 118
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Basin Index (%) 105 95
SHOSHONE RIVER
Blackwater 9780 11.0 10.4 106 10.3 9.7 106
Evening Star 9200 13.2 11.0 120 14.5 12.9 112
Marquette 8760 3.0 -M * 4.5 -M *
Sylvan Road 7120 6.5 5.2 125 8.9 8.8 101
Younts Peak 8350 -M 6.9 * -M 7.6 *
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Basin Index (%) 115 107
POWDER RIVER
Bear Trap Meadow 8200 3.5 2.5 140 3.4 4.2 81
Cloud Peak Reservoir 9860 6.1 6.1 100 6.0 6.2 97
Grave Springs 8550 3.4 3.2 106 3.5 5.0 70
Hansen Sawmill 8360 3.8 2.9 131 4.8 4.0 120
Middle Powder 7760 5.1 4.8 106 -M 6.0 *
Powder River Pass 9480 5.4 4.6 117 6.1 5.8 105
Soldier Park 8720 2.5 -M * 4.4 -M *
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Basin Index (%) 113 94
TONGUE RIVER
Big Goose 7990 3.7 3.6 103 4.2 5.2 81
Bone Springs Div 9350 6.4 7.2 89 5.3 7.0 76
Burgess Junction 7880 4.9 4.6 107 4.7 5.8 81
Dome Lake 8880 3.3 5.3 62 5.5 6.6 83
Little Goose 8870 4.1 -M * 5.0 -M *
Sucker Creek 8880 5.2 5.0 104 5.6 6.6 85
Tie Creek 6870 2.8 1.9 147 4.7 5.5 85
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Basin Index (%) 95 82
BELLE FOURCHE
Cole Canyon 5910 1.6 2.1 76 4.4 4.6 96
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Basin Index (%) 76 96
CHEYENNE RIVER BASIN
Blind Park 6890 2.7 3.2 84 4.7 6.0 78
North Rapid Creek 6130 3.4 3.1 110 5.2 5.0 104
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Basin Index (%) 97 90
UPPER N. PLATTE
Arapaho Ridge 10960 8.6 9.2 93 10.2 10.6 96
Blackhall Mtn 9820 10.5 -M * 13.5 -M *
Columbine 9160 10.1 8.6 117 11.9 11.3 105
Divide Peak 8880 4.7 8.3 57 7.2 10.1 71
Joe Wright 10120 8.6 9.3 92 14.1 11.8 119
Laprele Creek 8375 3.0 3.9 77 3.7 5.9 63
Med Bow 10500 14.9 -M * -M -M *
North French Creek 10130 11.9 11.3 105 12.0 11.8 102
Never Summer 10280 8.5 8.5 100 9.3 -M *
Old Battle 10000 11.8 12.3 96 12.1 16.0 76
Rawah 9020 6.1 4.2 145 8.8 7.2 122
Sage Creek Basin 7850 4.2 5.6 75 4.3 7.2 60
Sand Lake 10050 11.2 11.4 98 10.0 11.0 91
South Brush Creek 8440 4.1 4.6 89 4.9 7.0 70
Tower 10500 -M 18.5 * -M 18.0 *
Webber Springs 9250 8.3 9.3 89 -M 12.2 *
Willow Creek Pass 9540 5.0 5.4 93 6.9 6.4 108
Zirkel 9340 -M 9.6 * -M 13.2 *
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Basin Index (%) 95 91
SWEETWATER
Deer Park 9700 5.9 6.6 89 7.4 8.6 86
Larsen Creek 9000 4.0 4.7 85 5.9 -M *
South Pass 9040 5.6 6.5 86 6.0 8.1 74
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Basin Index (%) 87 80
LOWER N. PLATTE
Casper Mtn. 7900 -M 5.7 * -M 7.3 *
Laprele Creek 8375 3.0 3.9 77 3.7 5.9 63
Reno Hill 8400 4.2 5.7 74 5.6 7.0 80
Windy Peak 7900 3.0 3.0 100 3.4 5.1 67
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Basin Index (%) 81 71
LARAMIE RIVER
Brooklyn Lake 10240 9.1 7.7 118 10.2 9.1 112
Cinnabar Park 9574 8.3 8.7 95 10.9 11.2 97
Crow Creek 8330 3.8 4.3 88 4.9 5.4 91
Deadman Hill 10220 7.2 7.1 101 8.0 7.6 105
Rawah 9020 6.1 4.2 145 8.8 7.2 122
Roach 9700 5.2 6.8 76 7.6 8.8 86
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Basin Index (%) 102 102
S. PLATTE
Black Mountain 8920 4.6 -M * 6.5 -M *
Crow Creek 8330 3.8 4.3 88 4.9 5.4 91
Deadman Hill 10220 7.2 7.1 101 8.0 7.6 105
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Basin Index (%) 96 99
LITTLE SNAKE RIVER
Battle Mountain 7440 4.3 3.9 110 6.1 6.8 90
Divide Peak 8880 4.7 8.3 57 7.2 10.1 71
Elk River 8700 7.1 6.5 109 8.0 8.9 90
Little Snake River 8915 10.9 8.7 125 15.2 14.5 105
Old Battle 10000 11.8 12.3 96 12.1 16.0 76
Sage Creek Basin 7850 4.2 5.6 75 4.3 7.2 60
Sandstone RS 8150 5.1 4.2 121 5.8 8.3 70
Whiskey Park 8950 11.9 9.3 128 12.0 11.7 103
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Basin Index (%) 102 85
UPPER GREEN RIVER
Big Sandy Opening 9080 6.1 5.7 107 5.9 6.2 95
Blind Bull Sum 8650 13.8 8.9 155 9.9 9.1 109
East Rim Divide 7930 7.3 4.2 174 6.8 5.4 126
Elkhart Park G.S. 9400 6.2 5.6 111 7.0 6.3 111
Gros Ventre Summit 8750 8.1 6.0 135 6.3 6.0 105
Gunsight Pass 9820 7.0 5.9 119 6.9 6.3 110
Kendall R.S. 7740 7.4 4.7 157 7.3 6.4 114
Loomis Park 8240 9.4 6.4 147 9.8 8.0 122
New Fork Lake 8340 6.5 4.4 148 6.5 5.0 130
Pocket Creek 9360 5.8 -M * 4.6 -M *
Snider Basin 8060 7.8 5.0 156 9.0 6.4 141
Spring Creek Divide 9000 14.0 9.7 144 13.9 10.5 132
Triple Peak 8500 14.1 8.0 176 15.2 10.7 142
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Basin Index (%) 145 121
LOWER GREEN RIVER
Blacks Fork Jct 8870 2.7 -M * 4.9 -M *
Buck Pasture 9700 5.7 -M * 7.6 -M *
EF Blacks Fork GS 9360 3.6 -M * 4.9 -M *
Hams Fork 7840 5.9 4.4 134 5.3 5.0 106
Hewinta 9519 3.0 3.6 83 5.3 6.3 84
Hickerson Park 9145 3.5 2.8 125 3.8 4.9 78
Hole-in-Rock 9150 2.5 2.9 86 3.8 4.6 83
Indian Creek 9425 10.4 9.9 105 10.7 9.6 111
Kelley R.S. 8180 7.3 6.1 120 7.7 8.2 94
Spirit Lk 10235 4.1 -M * 5.8 -M *
Steel Creek Park 10200 4.8 6.1 79 6.4 7.4 86
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Basin Index (%) 104 93
UPPER BEAR RIVER
Bear River RS 8777 3.1 -M * 4.1 -M *
Bug Lake 7950 7.7 6.2 124 6.9 8.8 78
Burts Miller Ranch 8000 2.3 -M * 1.6 -M *
Chalk Creek #1 8993 7.6 9.6 79 8.1 11.3 72
Hayden Fork 9212 5.1 5.7 89 8.0 9.3 86
Kelley R.S. 8180 7.3 6.1 120 7.7 8.2 94
Lily Lake 9156 4.2 5.0 84 5.3 7.8 68
Monte Cristo 8960 10.8 9.8 110 10.3 11.4 90
Salt River Summit 7760 -M 4.7 * -M 7.3 *
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Basin Index (%) 101 82
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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.