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 29 , 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 7.5 6.9 109 10.9 9.6 114
Black Bear 8170 -M 16.8 * -M 17.0 *
Blind Bull Sum 8650 -M 8.8 * -M 8.9 *
Cottonwood Creek 7670 7.1 8.0 89 9.2 10.7 86
East Rim Divide 7930 -M 4.2 * -M 5.3 *
Grand Targhee 9260 17.3 17.2 101 14.0 14.6 96
Granite Creek 6770 -M 6.0 * -M 9.0 *
Grassy Lake 7265 -M 11.9 * -M 16.2 *
Gros Ventre Summit 8750 5.3 5.9 90 5.5 5.9 93
Gunsight Pass 9820 5.7 5.8 98 7.0 6.2 113
Lewis Lake Divide 7850 -M 12.6 * -M 16.1 *
Phillips Bench 8200 8.9 10.4 86 12.5 12.2 102
Salt River Summit 7760 -M 4.6 * -M 7.2 *
Snake River Station 6920 7.4 5.8 128 12.4 10.5 118
Spring Creek Divide 9000 8.8 9.4 94 8.8 10.4 85
Thumb Divide 7980 6.4 5.9 108 8.5 8.3 102
Togwotee Pass 9580 9.2 10.6 87 11.6 11.0 105
Two Ocean Plateau 9240 12.7 12.0 106 12.2 12.1 101
Willow Creek 8380 8.8 10.2 86 12.2 15.0 81
Younts Peak 8350 5.4 6.8 79 5.9 7.4 80
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Basin Index (%) 96 98
MADISON-GALLATIN
Black Bear 8170 -M 16.8 * -M 17.0 *
Canyon 7870 5.6 5.1 110 7.7 7.5 103
Madison Plateau 7750 -M 9.9 * -M 11.8 *
West Yellowstone 6700 -M 4.4 * -M 6.7 *
Whiskey Creek 6800 -M 6.2 * -M 9.3 *
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Basin Index (%) 110* 103*
YELLOWSTONE
Beartooth Lake 9360 8.5 9.6 89 9.2 8.8 105
Burnt Mtn 5880 2.0 1.9 105 6.5 6.6 98
Canyon 7870 5.6 5.1 110 7.7 7.5 103
Cole Creek 7850 3.7 6.2 60 4.6 6.3 73
Evening Star 9200 12.2 10.7 114 14.3 12.6 113
Fisher Creek 9100 14.3 14.1 101 13.4 14.4 93
Northeast Entrance 7350 3.7 3.7 100 6.4 5.9 108
Parker Peak 9400 9.5 9.4 101 11.0 8.2 134
Sylvan Lake 8420 7.9 8.9 89 11.9 10.8 110
Thumb Divide 7980 6.4 5.9 108 8.5 8.3 102
Two Ocean Plateau 9240 12.7 12.0 106 12.2 12.1 101
White Mill 8700 11.4 9.4 121 11.5 10.8 106
Wolverine 7650 6.1 4.5 136 7.0 6.0 117
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Basin Index (%) 103 105
WIND RIVER
Burroughs Creek 8750 5.4 -M * 6.7 -M *
Castle Creek 8400 2.5 -M * 3.6 -M *
Cold Springs 9630 3.1 3.0 103 4.0 4.8 83
Deer Park 9700 5.3 6.6 80 5.2 8.4 62
Hobbs Park 10100 4.6 6.3 73 4.8 6.0 80
Kirwin 9550 4.4 4.2 105 5.6 5.4 104
Little Warm 9370 4.1 4.3 95 5.7 6.0 95
Owl Creek 8975 1.5 2.4 62 2.1 2.8 75
South Pass 9040 4.2 6.3 67 3.7 8.1 46
St. Lawrence Alt 8620 1.4 2.9 48 2.7 4.2 64
Togwotee Pass 9580 9.2 10.6 87 11.6 11.0 105
Townsend Creek 8700 2.4 3.9 62 3.1 5.7 54
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Basin Index (%) 80 78
BIGHORN BASIN
Bald Mtn. 9380 3.4 8.0 42 4.1 7.6 54
Bear Trap Meadow 8200 2.1 2.5 84 2.5 4.2 60
Bone Springs Div 9350 4.3 7.1 61 4.2 6.9 61
Grave Springs 8550 1.7 3.2 53 1.9 5.0 38
Kirwin 9550 4.4 4.2 105 5.6 5.4 104
Marquette 8760 2.4 -M * 5.8 -M *
Middle Powder 7760 2.8 4.8 58 -M 6.0 *
Owl Creek 8975 1.5 2.4 62 2.1 2.8 75
Powder River Pass 9480 -M 4.5 * 2.3 5.7 40
Shell Creek 9580 3.5 7.0 50 3.7 6.4 58
Timber Creek 7950 1.8 2.1 86 5.4 3.8 142
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Basin Index (%) 62 67
SHOSHONE RIVER
Blackwater 9780 10.9 10.2 107 12.6 9.6 131
Evening Star 9200 12.2 10.7 114 14.3 12.6 113
Marquette 8760 2.4 -M * 5.8 -M *
Sylvan Road 7120 4.6 5.1 90 9.0 8.7 103
Younts Peak 8350 5.4 6.8 79 5.9 7.4 80
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Basin Index (%) 101 109
POWDER RIVER
Bear Trap Meadow 8200 2.1 2.5 84 2.5 4.2 60
Cloud Peak Reservoir 9860 2.8 6.0 47 -M 6.1 *
Grave Springs 8550 1.7 3.2 53 1.9 5.0 38
Hansen Sawmill 8360 2.0 2.9 69 2.4 4.0 60
Middle Powder 7760 2.8 4.8 58 -M 6.0 *
Powder River Pass 9480 -M 4.5 * 2.3 5.7 40
Soldier Park 8720 .7 -M * 2.4 -M *
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Basin Index (%) 59 48
TONGUE RIVER
Big Goose 7990 -M 3.6 * 2.4 5.2 46
Bone Springs Div 9350 4.3 7.1 61 4.2 6.9 61
Burgess Junction 7880 2.4 4.6 52 3.7 5.8 64
Dome Lake 8880 1.7 5.2 33 -M 6.6 *
Little Goose 8870 2.2 -M * 3.1 -M *
Sucker Creek 8880 2.6 5.0 52 3.2 6.6 48
Tie Creek 6870 .4 1.9 21 -M 5.5 *
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Basin Index (%) 48 55
BELLE FOURCHE
Cole Canyon 5910 1.2 2.0 60 3.5 4.6 76
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Basin Index (%) 60 76
CHEYENNE RIVER BASIN
Blind Park 6890 1.5 3.1 48 2.9 5.8 50
North Rapid Creek 6130 2.5 3.1 81 2.6 4.9 53
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Basin Index (%) 65 51
UPPER N. PLATTE
Arapaho Ridge 10960 11.6 9.1 127 12.4 10.4 119
Blackhall Mtn 9820 12.7 -M * 13.5 -M *
Columbine 9160 9.2 8.4 110 10.3 11.2 92
Divide Peak 8880 7.3 8.1 90 9.9 10.0 99
Joe Wright 10120 6.0 9.2 65 11.0 11.8 93
Laprele Creek 8375 2.7 3.8 71 4.1 5.8 71
Med Bow 10500 13.2 -M * 13.1 -M *
North French Creek 10130 9.4 11.1 85 9.9 11.6 85
Never Summer 10280 8.3 8.4 99 8.3 -M *
Old Battle 10000 11.7 12.2 96 11.1 15.8 70
Rawah 9020 5.8 4.1 141 8.7 7.1 123
Sage Creek Basin 7850 5.6 5.5 102 5.2 7.0 74
Sand Lake 10050 11.5 11.2 103 11.6 10.9 106
South Brush Creek 8440 3.6 4.5 80 4.9 7.0 70
Tower 10500 14.1 18.4 77 14.4 17.8 81
Webber Springs 9250 9.2 9.2 100 11.1 12.0 92
Willow Creek Pass 9540 7.5 5.3 142 7.8 6.3 124
Zirkel 9340 10.7 9.4 114 13.2 12.8 103
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Basin Index (%) 97 92
SWEETWATER
Deer Park 9700 5.3 6.6 80 5.2 8.4 62
Larsen Creek 9000 2.4 4.7 51 5.4 -M *
South Pass 9040 4.2 6.3 67 3.7 8.1 46
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Basin Index (%) 68 54
LOWER N. PLATTE
Casper Mtn. 7900 4.2 5.6 75 5.0 7.3 68
Laprele Creek 8375 2.7 3.8 71 4.1 5.8 71
Reno Hill 8400 5.2 5.6 93 7.4 6.9 107
Windy Peak 7900 3.1 3.0 103 4.4 5.1 86
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Basin Index (%) 84 83
LARAMIE RIVER
Brooklyn Lake 10240 9.7 7.6 128 10.1 8.9 113
Cinnabar Park 9574 8.5 8.5 100 10.2 10.9 94
Crow Creek 8330 3.7 4.2 88 6.7 5.4 124
Deadman Hill 10220 8.8 7.0 126 9.2 7.6 121
Rawah 9020 5.8 4.1 141 8.7 7.1 123
Roach 9700 7.9 6.8 116 9.3 8.7 107
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Basin Index (%) 116 112
S. PLATTE
Black Mountain 8920 6.5 -M * 9.1 -M *
Crow Creek 8330 3.7 4.2 88 6.7 5.4 124
Deadman Hill 10220 8.8 7.0 126 9.2 7.6 121
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Basin Index (%) 112 122
LITTLE SNAKE RIVER
Battle Mountain 7440 4.8 3.7 130 6.4 6.8 94
Divide Peak 8880 7.3 8.1 90 9.9 10.0 99
Elk River 8700 7.1 6.4 111 8.8 8.8 100
Little Snake River 8915 -M 8.6 * -M 14.1 *
Old Battle 10000 11.7 12.2 96 11.1 15.8 70
Sage Creek Basin 7850 5.6 5.5 102 5.2 7.0 74
Sandstone RS 8150 4.7 4.2 112 4.8 8.2 59
Whiskey Park 8950 8.9 9.1 98 10.2 11.5 89
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Basin Index (%) 102 83
UPPER GREEN RIVER
Big Sandy Opening 9080 3.8 5.6 68 4.8 6.0 80
Blind Bull Sum 8650 -M 8.8 * -M 8.9 *
East Rim Divide 7930 -M 4.2 * -M 5.3 *
Elkhart Park G.S. 9400 4.1 5.5 75 6.5 6.2 105
Gros Ventre Summit 8750 5.3 5.9 90 5.5 5.9 93
Gunsight Pass 9820 5.7 5.8 98 7.0 6.2 113
Kendall R.S. 7740 -M 4.6 * 6.8 6.2 110
Loomis Park 8240 5.4 6.2 87 7.6 7.8 97
New Fork Lake 8340 4.4 4.4 100 5.9 5.0 118
Pocket Creek 9360 4.0 -M * 4.7 -M *
Snider Basin 8060 -M 4.9 * -M 6.3 *
Spring Creek Divide 9000 8.8 9.4 94 8.8 10.4 85
Triple Peak 8500 8.6 7.9 109 10.5 10.5 100
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Basin Index (%) 91 99
LOWER GREEN RIVER
Blacks Fork Jct 8870 -M -M * -M -M *
Buck Pasture 9700 -M -M * -M -M *
EF Blacks Fork GS 9360 -M -M * -M -M *
Hams Fork 7840 4.3 4.4 98 3.6 5.0 72
Hewinta 9519 -M 3.6 * -M 6.2 *
Hickerson Park 9145 3.9 2.7 144 4.9 4.8 102
Hole-in-Rock 9150 -M 2.9 * -M 4.6 *
Indian Creek 9425 7.6 9.9 77 5.8 9.4 62
Kelley R.S. 8180 -M 6.0 * -M 8.1 *
Spirit Lk 10235 -M -M * -M -M *
Steel Creek Park 10200 6.6 6.1 108 8.9 7.3 122
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Basin Index (%) 97* 88*
UPPER BEAR RIVER
Bear River RS 8777 -M -M * -M -M *
Bug Lake 7950 -M 6.1 * -M 8.6 *
Burts Miller Ranch 8000 -M -M * -M -M *
Chalk Creek #1 8993 -M 9.5 * -M 11.1 *
Hayden Fork 9212 -M 5.5 * -M 9.2 *
Kelley R.S. 8180 -M 6.0 * -M 8.1 *
Lily Lake 9156 -M 4.9 * -M 7.8 *
Monte Cristo 8960 -M 9.7 * -M 11.3 *
Salt River Summit 7760 -M 4.6 * -M 7.2 *
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Basin Index (%) * *
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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.