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: FEBRUARY 21 , 2016
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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 12.4 13.0 95 15.7 16.4 96
Black Bear 8170 23.7 28.0 85 25.9 29.1 89
Blind Bull Sum 8650 18.5 17.1 108 12.3 15.2 81
Cottonwood Creek 7670 16.0 15.7 102 18.9 18.5 102
East Rim Divide 7930 8.0 7.5 107 8.2 9.0 91
Grand Targhee 9260 29.2 27.9 105 22.7 23.7 96
Granite Creek 6770 12.1 13.0 93 14.4 15.7 92
Grassy Lake 7265 22.9 24.8 92 27.4 28.1 98
Gros Ventre Summit 8750 7.9 9.3 85 7.7 9.5 81
Gunsight Pass 9820 9.8 10.0 98 10.7 10.2 105
Lewis Lake Divide 7850 22.1 24.4 91 25.2 27.4 92
Phillips Bench 8200 16.5 18.7 88 19.8 21.5 92
Salt River Summit 7760 9.2 10.0 92 10.8 12.8 84
Snake River Station 6920 13.1 13.6 96 18.1 17.8 102
Spring Creek Divide 9000 18.7 17.2 109 17.6 18.3 96
Thumb Divide 7980 9.8 11.2 88 11.3 13.9 81
Togwotee Pass 9580 16.1 16.9 95 18.7 18.4 102
Two Ocean Plateau 9240 19.1 20.4 94 18.5 20.5 90
Willow Creek 8380 20.6 20.7 100 24.0 25.2 95
Younts Peak 8350 9.4 11.2 84 9.0 12.1 74
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Basin Index (%) 95 93
MADISON-GALLATIN
Black Bear 8170 23.7 28.0 85 25.9 29.1 89
Canyon 7870 8.7 9.9 88 10.7 12.5 86
Madison Plateau 7750 15.7 16.7 94 16.7 20.0 84
West Yellowstone 6700 8.6 8.2 105 10.8 11.1 97
Whiskey Creek 6800 10.2 11.3 90 12.2 15.4 79
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Basin Index (%) 90 87
YELLOWSTONE
Beartooth Lake 9360 12.9 15.8 82 13.4 15.0 89
Burnt Mtn 5880 1.8 3.8 47 7.1 9.0 79
Canyon 7870 8.7 9.9 88 10.7 12.5 86
Cole Creek 7850 4.7 9.0 52 -M 8.6 *
Evening Star 9200 19.6 18.4 107 22.1 21.0 105
Fisher Creek 9100 22.1 24.6 90 19.9 24.2 82
Northeast Entrance 7350 6.7 7.6 88 9.5 9.5 100
Parker Peak 9400 15.2 14.9 102 16.3 13.3 123
Sylvan Lake 8420 13.1 15.0 87 17.6 17.1 103
Thumb Divide 7980 9.8 11.2 88 11.3 13.9 81
Two Ocean Plateau 9240 19.1 20.4 94 18.5 20.5 90
White Mill 8700 17.5 17.2 102 16.9 18.1 93
Wolverine 7650 9.6 8.2 117 9.6 9.5 101
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Basin Index (%) 91 94
WIND RIVER
Burroughs Creek 8750 8.6 -M * 10.0 -M *
Castle Creek 8400 3.3 -M * 4.7 -M *
Cold Springs 9630 4.9 5.3 92 5.1 7.1 72
Deer Park 9700 8.4 10.2 82 8.7 14.3 61
Hobbs Park 10100 7.3 9.0 81 6.5 9.0 72
Kirwin 9550 6.4 6.4 100 7.8 8.3 94
Little Warm 9370 6.4 7.7 83 8.0 9.3 86
Owl Creek 8975 2.1 3.6 58 2.6 4.1 63
South Pass 9040 7.1 10.6 67 5.6 12.8 44
St. Lawrence Alt 8620 1.9 4.9 39 3.9 6.1 64
Togwotee Pass 9580 16.1 16.9 95 18.7 18.4 102
Townsend Creek 8700 4.3 6.1 70 4.9 8.2 60
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Basin Index (%) 80 74
BIGHORN BASIN
Bald Mtn. 9380 9.9 13.8 72 8.4 12.3 68
Bear Trap Meadow 8200 4.4 4.0 110 3.9 5.8 67
Bone Springs Div 9350 8.5 11.2 76 7.1 11.0 65
Grave Springs 8550 4.0 6.0 67 3.2 7.4 43
Kirwin 9550 6.4 6.4 100 7.8 8.3 94
Marquette 8760 2.7 -M * 6.4 -M *
Middle Powder 7760 5.4 7.4 73 3.2 8.3 39
Owl Creek 8975 2.1 3.6 58 2.6 4.1 63
Powder River Pass 9480 5.5 7.5 73 5.1 9.0 57
Shell Creek 9580 7.5 10.5 71 6.7 10.0 67
Timber Creek 7950 2.8 3.1 90 6.6 4.9 135
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Basin Index (%) 77 67
SHOSHONE RIVER
Blackwater 9780 15.1 16.3 93 17.4 15.3 114
Evening Star 9200 19.6 18.4 107 22.1 21.0 105
Marquette 8760 2.7 -M * 6.4 -M *
Sylvan Road 7120 7.5 8.8 85 12.3 13.4 92
Younts Peak 8350 9.4 11.2 84 9.0 12.1 74
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Basin Index (%) 94 98
POWDER RIVER
Bear Trap Meadow 8200 4.4 4.0 110 3.9 5.8 67
Cloud Peak Reservoir 9860 6.1 9.9 62 -M 9.0 *
Grave Springs 8550 4.0 6.0 67 3.2 7.4 43
Hansen Sawmill 8360 3.5 4.4 80 4.0 5.7 70
Middle Powder 7760 5.4 7.4 73 3.2 8.3 39
Powder River Pass 9480 5.5 7.5 73 5.1 9.0 57
Soldier Park 8720 2.0 -M * 3.9 -M *
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Basin Index (%) 74 54
TONGUE RIVER
Big Goose 7990 3.3 5.9 56 3.8 7.5 51
Bone Springs Div 9350 8.5 11.2 76 7.1 11.0 65
Burgess Junction 7880 4.9 7.7 64 5.5 8.6 64
Dome Lake 8880 4.7 8.1 58 4.6 9.5 48
Little Goose 8870 4.0 -M * 5.1 -M *
Sucker Creek 8880 5.4 8.3 65 5.4 10.0 54
Tie Creek 6870 1.9 4.1 46 4.5 7.9 57
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Basin Index (%) 63 57
BELLE FOURCHE
Cole Canyon 5910 3.8 4.7 81 6.2 6.8 91
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Basin Index (%) 81 91
CHEYENNE RIVER BASIN
Blind Park 6890 4.7 5.9 80 6.7 8.9 75
North Rapid Creek 6130 4.8 5.6 86 5.5 7.2 76
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Basin Index (%) 83 76
UPPER N. PLATTE
Arapaho Ridge 10960 16.7 15.5 108 17.1 16.7 102
Blackhall Mtn 9820 21.5 -M * 21.6 -M *
Columbine 9160 17.8 18.4 97 18.3 19.3 95
Divide Peak 8880 14.1 14.8 95 16.6 16.1 103
Joe Wright 10120 11.2 15.4 73 17.7 18.8 94
Laprele Creek 8375 6.8 7.1 96 7.7 8.9 87
Med Bow 10500 24.1 -M * 21.5 -M *
North French Creek 10130 18.4 19.7 93 18.2 19.9 91
Never Summer 10280 12.9 14.8 87 11.8 -M *
Old Battle 10000 20.6 22.9 90 19.6 26.7 73
Rawah 9020 9.3 7.8 119 12.7 10.2 125
Sage Creek Basin 7850 11.6 10.4 112 9.4 11.3 83
Sand Lake 10050 18.2 19.6 93 17.4 17.9 97
South Brush Creek 8440 8.9 9.3 96 9.4 11.0 85
Tower 10500 26.9 34.4 78 26.4 30.2 87
Webber Springs 9250 15.4 17.6 88 17.6 20.1 88
Willow Creek Pass 9540 10.4 9.0 116 10.8 9.8 110
Zirkel 9340 20.6 21.9 94 22.8 22.3 102
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Basin Index (%) 93 93
SWEETWATER
Deer Park 9700 8.4 10.2 82 8.7 14.3 61
Larsen Creek 9000 5.1 8.9 57 8.1 -M *
South Pass 9040 7.1 10.6 67 5.6 12.8 44
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Basin Index (%) 69 53
LOWER N. PLATTE
Casper Mtn. 7900 8.5 9.5 89 9.1 10.5 87
Laprele Creek 8375 6.8 7.1 96 7.7 8.9 87
Reno Hill 8400 9.7 9.3 104 11.8 10.5 112
Windy Peak 7900 6.2 5.4 115 7.2 7.4 97
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Basin Index (%) 100 96
LARAMIE RIVER
Brooklyn Lake 10240 16.5 14.4 115 15.8 15.2 104
Cinnabar Park 9574 14.8 16.2 91 16.5 19.0 87
Crow Creek 8330 5.7 6.6 86 9.6 7.5 128
Deadman Hill 10220 12.8 11.9 108 12.3 12.0 102
Rawah 9020 9.3 7.8 119 12.7 10.2 125
Roach 9700 -M 12.0 * -M 13.9 *
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Basin Index (%) 104 105
S. PLATTE
Black Mountain 8920 8.8 -M * 11.4 -M *
Crow Creek 8330 5.7 6.6 86 9.6 7.5 128
Deadman Hill 10220 12.8 11.9 108 12.3 12.0 102
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Basin Index (%) 100 112
LITTLE SNAKE RIVER
Battle Mountain 7440 10.3 9.0 114 11.8 11.6 102
Divide Peak 8880 14.1 14.8 95 16.6 16.1 103
Elk River 8700 13.2 14.2 93 14.1 15.2 93
Little Snake River 8915 16.4 18.9 87 22.7 24.2 94
Old Battle 10000 20.6 22.9 90 19.6 26.7 73
Sage Creek Basin 7850 11.6 10.4 112 9.4 11.3 83
Sandstone RS 8150 9.3 10.2 91 9.3 14.4 65
Whiskey Park 8950 18.8 20.0 94 19.3 21.3 91
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Basin Index (%) 95 87
UPPER GREEN RIVER
Big Sandy Opening 9080 7.0 9.4 74 7.6 9.8 78
Blind Bull Sum 8650 18.5 17.1 108 12.3 15.2 81
East Rim Divide 7930 8.0 7.5 107 8.2 9.0 91
Elkhart Park G.S. 9400 6.6 8.9 74 8.7 9.9 88
Gros Ventre Summit 8750 7.9 9.3 85 7.7 9.5 81
Gunsight Pass 9820 9.8 10.0 98 10.7 10.2 105
Kendall R.S. 7740 7.9 9.3 85 9.5 11.0 86
Loomis Park 8240 10.8 11.0 98 12.7 13.2 96
New Fork Lake 8340 7.6 7.7 99 8.8 8.2 107
Pocket Creek 9360 5.1 -M * 6.6 -M *
Snider Basin 8060 9.8 9.1 108 9.3 10.9 85
Spring Creek Divide 9000 18.7 17.2 109 17.6 18.3 96
Triple Peak 8500 18.0 16.0 112 19.7 19.0 104
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Basin Index (%) 99 92
LOWER GREEN RIVER
Blacks Fork Jct 8870 -M -M * -M -M *
Buck Pasture 9700 9.9 -M * 12.5 -M *
EF Blacks Fork GS 9360 6.8 -M * 7.1 -M *
Hams Fork 7840 8.0 8.7 92 6.3 8.7 72
Hewinta 9519 8.1 7.3 111 9.7 10.2 95
Hickerson Park 9145 8.5 5.3 160 7.8 7.2 108
Hole-in-Rock 9150 6.5 5.1 127 8.5 6.7 127
Indian Creek 9425 14.9 17.4 86 11.7 16.8 70
Kelley R.S. 8180 9.6 11.0 87 10.9 13.8 79
Spirit Lk 10235 8.8 -M * 11.8 -M *
Steel Creek Park 10200 11.6 10.7 108 13.6 11.7 116
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Basin Index (%) 103 91
UPPER BEAR RIVER
Bear River RS 8777 8.1 -M * 9.2 -M *
Bug Lake 7950 14.3 13.8 104 14.1 14.7 96
Burts Miller Ranch 8000 5.1 -M * 4.5 -M *
Chalk Creek #1 8993 15.1 17.0 89 17.2 18.6 92
Hayden Fork 9212 11.1 11.4 97 14.9 15.5 96
Kelley R.S. 8180 9.6 11.0 87 10.9 13.8 79
Lily Lake 9156 9.7 9.6 101 10.6 12.6 84
Monte Cristo 8960 20.0 19.6 102 20.1 19.5 103
Salt River Summit 7760 9.2 10.0 92 10.8 12.8 84
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Basin Index (%) 96 92
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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.