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: DECEMBER 6 , 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 5.9 4.4 134 6.8 6.8 100
Black Bear 8170 9.3 10.2 91 11.1 11.8 94
Blind Bull Sum 8650 9.8 5.9 166 7.5 6.4 117
Cottonwood Creek 7670 8.0 5.2 154 10.0 7.6 132
East Rim Divide 7930 4.6 2.2 209 4.8 3.8 126
Grand Targhee 9260 13.9 10.2 136 12.9 10.3 125
Granite Creek 6770 7.8 3.0 260 8.3 6.1 136
Grassy Lake 7265 9.0 7.2 125 10.2 11.1 92
Gros Ventre Summit 8750 6.1 4.3 142 4.4 4.5 98
Gunsight Pass 9820 4.9 3.6 136 5.2 4.5 116
Lewis Lake Divide 7850 8.1 8.3 98 10.8 11.1 97
Phillips Bench 8200 9.3 6.6 141 10.6 8.3 128
Salt River Summit 7760 3.7 2.3 161 5.4 4.9 110
Snake River Station 6920 5.9 3.5 169 7.8 7.4 105
Spring Creek Divide 9000 9.4 5.8 162 9.8 7.3 134
Thumb Divide 7980 3.6 3.6 100 5.0 6.0 83
Togwotee Pass 9580 9.0 7.9 114 9.8 8.0 122
Two Ocean Plateau 9240 10.7 9.4 114 9.7 9.0 108
Willow Creek 8380 8.0 6.5 123 10.7 10.6 101
Younts Peak 8350 -M 4.6 * -M 5.6 *
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Basin Index (%) 134 111
MADISON-GALLATIN
Black Bear 8170 9.3 10.2 91 11.1 11.8 94
Canyon 7870 4.0 3.2 125 5.0 5.4 93
Madison Plateau 7750 6.0 6.1 98 7.1 8.2 87
West Yellowstone 6700 3.0 2.4 125 4.2 4.7 89
Whiskey Creek 6800 3.9 3.8 103 5.5 6.7 82
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Basin Index (%) 102 89
YELLOWSTONE
Beartooth Lake 9360 8.7 6.8 128 8.4 6.2 135
Burnt Mtn 5880 2.2 1.3 169 4.4 5.5 80
Canyon 7870 4.0 3.2 125 5.0 5.4 93
Cole Creek 7850 3.3 4.7 70 3.2 5.2 62
Evening Star 9200 9.8 7.8 126 10.9 9.3 117
Fisher Creek 9100 11.4 9.5 120 10.7 10.2 105
Northeast Entrance 7350 3.7 2.0 185 6.1 4.5 136
Parker Peak 9400 8.1 6.7 121 7.8 6.2 126
Sylvan Lake 8420 4.6 5.9 78 6.7 8.0 84
Thumb Divide 7980 3.6 3.6 100 5.0 6.0 83
Two Ocean Plateau 9240 10.7 9.4 114 9.7 9.0 108
White Mill 8700 8.9 6.7 133 9.0 7.9 114
Wolverine 7650 5.1 2.6 196 5.8 4.5 129
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Basin Index (%) 120 105
WIND RIVER
Burroughs Creek 8750 5.6 4.2 133 6.5 5.4 120
Castle Creek 8400 3.5 -M * 3.7 -M *
Cold Springs 9630 2.4 2.4 100 3.0 3.8 79
Deer Park 9700 3.6 4.4 82 5.5 6.0 92
Hobbs Park 10100 3.4 4.9 69 4.1 4.8 85
Kirwin 9550 4.5 3.6 125 5.6 4.3 130
Little Warm 9370 3.8 3.3 115 4.6 4.6 100
Owl Creek 8975 1.4 1.8 78 3.4 2.3 148
South Pass 9040 3.7 4.2 88 4.2 5.9 71
St. Lawrence Alt 8620 .6 2.2 27 1.8 3.4 53
Togwotee Pass 9580 9.0 7.9 114 9.8 8.0 122
Townsend Creek 8700 1.3 2.7 48 3.3 4.5 73
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Basin Index (%) 94 98
BIGHORN BASIN
Bald Mtn. 9380 4.8 6.1 79 4.8 5.6 86
Bear Trap Meadow 8200 2.1 1.7 124 2.6 3.4 76
Bone Springs Div 9350 4.0 5.4 74 3.9 5.3 74
Grave Springs 8550 1.4 2.1 67 1.8 3.9 46
Kirwin 9550 4.5 3.6 125 5.6 4.3 130
Marquette 8760 1.1 -M * 2.5 -M *
Middle Powder 7760 2.8 3.2 88 2.8 4.6 61
Owl Creek 8975 1.4 1.8 78 3.4 2.3 148
Powder River Pass 9480 3.9 3.3 118 5.0 4.4 114
Shell Creek 9580 3.9 5.1 76 4.4 4.9 90
Timber Creek 7950 1.8 1.8 100 3.3 3.4 97
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Basin Index (%) 90 89
SHOSHONE RIVER
Blackwater 9780 8.4 7.5 112 8.0 7.2 111
Evening Star 9200 9.8 7.8 126 10.9 9.3 117
Marquette 8760 1.1 -M * 2.5 -M *
Sylvan Road 7120 4.5 3.2 141 6.7 6.6 102
Younts Peak 8350 -M 4.6 * -M 5.6 *
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Basin Index (%) 123 111
POWDER RIVER
Bear Trap Meadow 8200 2.1 1.7 124 2.6 3.4 76
Cloud Peak Reservoir 9860 3.8 4.1 93 4.3 5.0 86
Grave Springs 8550 1.4 2.1 67 1.8 3.9 46
Hansen Sawmill 8360 2.4 1.8 133 3.3 3.2 103
Middle Powder 7760 2.8 3.2 88 2.8 4.6 61
Powder River Pass 9480 3.9 3.3 118 5.0 4.4 114
Soldier Park 8720 1.7 -M * 3.0 -M *
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Basin Index (%) 101 81
TONGUE RIVER
Big Goose 7990 2.5 2.7 93 3.2 4.2 76
Bone Springs Div 9350 4.0 5.4 74 3.9 5.3 74
Burgess Junction 7880 3.1 3.3 94 3.5 4.4 80
Dome Lake 8880 1.5 4.0 38 3.6 5.2 69
Little Goose 8870 2.4 -M * 3.7 -M *
Sucker Creek 8880 3.3 3.5 94 4.4 5.0 88
Tie Creek 6870 1.9 .9 211 3.5 4.4 80
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Basin Index (%) 82 78
BELLE FOURCHE
Cole Canyon 5910 1.7 .9 189 3.0 3.8 79
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Basin Index (%) 189 79
CHEYENNE RIVER BASIN
Blind Park 6890 1.7 1.9 89 3.5 4.6 76
North Rapid Creek 6130 2.1 1.7 124 3.8 3.9 97
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Basin Index (%) 106 86
UPPER N. PLATTE
Arapaho Ridge 10960 4.9 6.1 80 6.3 7.5 84
Blackhall Mtn 9820 6.8 -M * 9.8 -M *
Columbine 9160 5.4 5.0 108 7.6 7.7 99
Divide Peak 8880 2.2 5.2 42 4.3 7.3 59
Joe Wright 10120 5.0 6.5 77 9.9 8.7 114
Laprele Creek 8375 1.2 2.4 50 2.0 4.4 45
Med Bow 10500 8.9 -M * 10.0 -M *
North French Creek 10130 7.0 7.8 90 7.7 8.4 92
Never Summer 10280 5.0 5.6 89 6.2 -M *
Old Battle 10000 7.1 8.5 84 8.6 11.0 78
Rawah 9020 3.4 2.9 117 6.1 5.3 115
Sage Creek Basin 7850 1.1 2.7 41 2.4 4.9 49
Sand Lake 10050 7.6 7.8 97 7.1 8.0 89
South Brush Creek 8440 1.9 3.0 63 3.0 5.2 58
Tower 10500 10.4 12.4 84 12.5 12.6 99
Webber Springs 9250 5.1 5.6 91 6.6 8.4 79
Willow Creek Pass 9540 3.0 3.8 79 4.7 4.8 98
Zirkel 9340 -M 5.2 * -M 9.0 *
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Basin Index (%) 82 85
SWEETWATER
Deer Park 9700 3.6 4.4 82 5.5 6.0 92
Larsen Creek 9000 2.0 2.9 69 3.9 -M *
South Pass 9040 3.7 4.2 88 4.2 5.9 71
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Basin Index (%) 81 82
LOWER N. PLATTE
Casper Mtn. 7900 1.5 3.8 39 2.6 5.7 46
Laprele Creek 8375 1.2 2.4 50 2.0 4.4 45
Reno Hill 8400 1.8 4.0 45 3.4 5.3 64
Windy Peak 7900 1.3 1.9 68 1.7 3.8 45
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Basin Index (%) 48 51
LARAMIE RIVER
Brooklyn Lake 10240 5.9 4.7 126 6.9 6.3 110
Cinnabar Park 9574 5.4 5.8 93 7.4 7.5 99
Crow Creek 8330 .9 2.6 35 2.9 3.8 76
Deadman Hill 10220 4.5 5.0 90 5.6 5.6 100
Rawah 9020 3.4 2.9 117 6.1 5.3 115
Roach 9700 2.3 4.4 52 4.7 6.1 77
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Basin Index (%) 88 97
S. PLATTE
Black Mountain 8920 2.7 -M * 4.5 -M *
Crow Creek 8330 .9 2.6 35 2.9 3.8 76
Deadman Hill 10220 4.5 5.0 90 5.6 5.6 100
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Basin Index (%) 71 90
LITTLE SNAKE RIVER
Battle Mountain 7440 1.7 1.9 89 3.8 5.0 76
Divide Peak 8880 2.2 5.2 42 4.3 7.3 59
Elk River 8700 3.8 3.5 109 5.3 6.2 85
Little Snake River 8915 6.5 4.2 155 10.4 9.7 107
Old Battle 10000 7.1 8.5 84 8.6 11.0 78
Sage Creek Basin 7850 1.1 2.7 41 2.4 4.9 49
Sandstone RS 8150 2.2 2.5 88 3.2 5.8 55
Whiskey Park 8950 7.2 5.6 129 8.2 8.1 101
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Basin Index (%) 93 80
UPPER GREEN RIVER
Big Sandy Opening 9080 3.8 3.8 100 3.7 4.4 84
Blind Bull Sum 8650 9.8 5.9 166 7.5 6.4 117
East Rim Divide 7930 4.6 2.2 209 4.8 3.8 126
Elkhart Park G.S. 9400 3.7 3.7 100 5.0 4.6 109
Gros Ventre Summit 8750 6.1 4.3 142 4.4 4.5 98
Gunsight Pass 9820 4.9 3.6 136 5.2 4.5 116
Kendall R.S. 7740 4.7 2.9 162 5.0 4.4 114
Loomis Park 8240 6.4 3.6 178 6.9 5.4 128
New Fork Lake 8340 4.7 2.5 188 4.4 3.6 122
Pocket Creek 9360 3.2 -M * 2.5 -M *
Snider Basin 8060 4.9 2.9 169 6.3 4.4 143
Spring Creek Divide 9000 9.4 5.8 162 9.8 7.3 134
Triple Peak 8500 11.0 5.4 204 11.6 7.5 155
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Basin Index (%) 159 123
LOWER GREEN RIVER
Blacks Fork Jct 8870 1.7 -M * 3.4 -M *
Buck Pasture 9700 3.3 -M * -M -M *
EF Blacks Fork GS 9360 2.3 -M * 3.7 -M *
Hams Fork 7840 3.4 2.6 131 3.6 3.6 100
Hewinta 9519 1.9 2.1 90 3.6 4.9 73
Hickerson Park 9145 2.3 1.6 144 2.9 3.9 74
Hole-in-Rock 9150 .9 1.8 50 2.3 3.7 62
Indian Creek 9425 6.2 6.5 95 7.5 6.6 114
Kelley R.S. 8180 4.5 3.5 129 5.1 5.6 91
Spirit Lk 10235 2.0 -M * 3.3 -M *
Steel Creek Park 10200 2.8 4.4 64 4.0 5.6 71
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Basin Index (%) 98 86
UPPER BEAR RIVER
Bear River RS 8777 1.8 -M * 2.8 -M *
Bug Lake 7950 4.1 3.8 108 4.3 6.1 70
Burts Miller Ranch 8000 1.6 -M * 1.3 -M *
Chalk Creek #1 8993 4.1 6.4 64 4.6 8.2 56
Hayden Fork 9212 2.7 3.2 84 5.0 6.7 75
Kelley R.S. 8180 4.5 3.5 129 5.1 5.6 91
Lily Lake 9156 2.0 3.2 62 3.5 5.9 59
Monte Cristo 8960 5.1 6.4 80 5.3 7.9 67
Salt River Summit 7760 3.7 2.3 161 5.4 4.9 110
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Basin Index (%) 91 73
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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.
