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: FEBRUARY 12 , 2019
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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 7060 11.5 12.0 96 13.4 15.1 89
Black Bear 8170 23.9 26.4 91 24.6 26.8 92
Blind Bull Sum 8650 13.2 15.4 86 11.1 13.9 80
Cottonwood Creek 7670 14.1 14.1 100 16.8 17.1 98
East Rim Divide 7930 6.6 7.1 93 6.9 8.2 84
Grand Targhee 9260 30.2 25.4 119 23.2 22.5 103
Granite Creek 6770 11.6 11.8 98 13.2 14.7 90
Grassy Lake 7265 18.9 22.9 83 22.6 25.9 87
Gros Ventre Summit 8750 5.6 8.8 64 6.9 8.8 78
Gunsight Pass 9820 7.9 9.0 88 10.2 9.7 105
Lewis Lake Divide 7850 18.4 22.4 82 21.3 25.0 85
Phillips Bench 8200 17.2 17.3 99 20.0 19.7 102
Salt River Summit 7640 8.4 8.8 95 10.5 11.5 91
Snake River Station 6920 11.3 12.5 90 16.0 16.7 96
Spring Creek Divide 9000 14.7 16.0 92 16.0 16.7 96
Thumb Divide 7980 9.3 10.2 91 11.1 13.0 85
Togwotee Pass 9580 15.5 16.0 97 16.3 17.1 95
Two Ocean Plateau 9240 18.1 19.1 95 15.5 18.7 83
Willow Creek 8080 17.6 18.5 95 21.7 23.3 93
Younts Peak 8350 -M 10.3 * -M 11.3 *
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Basin Index (%) 93 92
MADISON-GALLATIN
Black Bear 8170 23.9 26.4 91 24.6 26.8 92
Canyon 7870 8.1 8.9 91 9.8 11.6 84
Madison Plateau 7750 14.5 15.4 94 15.4 18.6 83
West Yellowstone 6700 8.2 7.4 111 9.9 10.4 95
Whiskey Creek 6800 9.7 10.3 94 10.4 14.2 73
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Basin Index (%) 94 86
YELLOWSTONE
Beartooth Lake 9360 11.2 15.0 75 10.0 13.9 72
Burnt Mtn 5880 5.5 3.1 177 9.7 8.4 115
Canyon 7870 8.1 8.9 91 9.8 11.6 84
Cole Creek 7850 11.5 8.8 131 -M 8.2 *
Evening Star 9200 16.1 17.0 95 18.9 19.5 97
Fisher Creek 9100 17.7 22.3 79 21.3 22.4 95
Northeast Entrance 7350 6.9 7.1 97 9.3 8.9 104
Parker Peak 9400 14.6 13.8 106 15.3 12.3 124
Sylvan Lake 8420 13.5 13.6 99 18.7 15.9 118
Thumb Divide 7980 9.3 10.2 91 11.1 13.0 85
Two Ocean Plateau 9240 18.1 19.1 95 15.5 18.7 83
White Mill 8700 13.3 15.9 84 11.7 16.7 70
Wolverine 7650 7.2 7.6 95 8.0 8.8 91
Younts Peak 8350 -M 10.3 * -M 11.3 *
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Basin Index (%) 94 94
WIND RIVER
Burroughs Creek 8750 4.9 -M * 6.4 -M *
Castle Creek 8400 2.3 -M * 3.5 -M *
Cold Springs 9630 4.8 4.9 98 5.0 6.6 76
Deer Park 9700 10.8 9.5 114 11.4 13.5 84
Hobbs Park 10100 9.1 8.2 111 7.0 8.3 84
Kirwin 9550 5.8 6.1 95 6.0 7.7 78
Little Warm 9370 5.1 6.9 74 4.9 8.7 56
Owl Creek 8975 3.9 3.2 122 4.5 3.8 118
South Pass 9040 9.0 9.9 91 8.1 11.7 69
St. Lawrence Alt 8620 3.5 4.4 80 6.2 5.7 109
Togwotee Pass 9580 15.5 16.0 97 16.3 17.1 95
Townsend Creek 8700 6.5 5.7 114 7.4 7.6 97
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Basin Index (%) 99 85
BIGHORN BASIN
Bald Mtn. 9380 12.8 12.1 106 8.6 11.5 75
Bear Trap Meadow 8200 5.7 3.7 154 5.1 5.5 93
Bone Springs Div 9350 9.5 10.4 91 7.9 10.3 77
Grave Springs 8550 5.3 5.3 100 6.2 7.0 89
Kirwin 9550 5.8 6.1 95 6.0 7.7 78
Marquette 8760 5.7 -M * 6.8 -M *
Middle Powder 7760 6.8 6.9 99 3.9 7.9 49
Owl Creek 8975 3.9 3.2 122 4.5 3.8 118
Powder River Pass 9480 7.3 7.0 104 6.5 8.4 77
Shell Creek 9580 -M 9.8 * -M 9.5 *
Timber Creek 7950 2.8 3.1 90 4.6 4.8 96
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Basin Index (%) 104 80
SHOSHONE RIVER
Blackwater 9780 14.4 15.3 94 15.3 14.2 108
Evening Star 9200 16.1 17.0 95 18.9 19.5 97
Marquette 8760 5.7 -M * 6.8 -M *
Sylvan Lake 8420 13.5 13.6 99 18.7 15.9 118
Sylvan Road 7120 7.9 8.4 94 11.1 12.7 87
Younts Peak 8350 -M 10.3 * -M 11.3 *
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Basin Index (%) 96 103
POWDER RIVER
Bear Trap Meadow 8200 5.7 3.7 154 5.1 5.5 93
Cloud Peak Reservoir 9860 8.8 9.2 96 7.8 8.5 92
Grave Springs 8550 5.3 5.3 100 6.2 7.0 89
Hansen Sawmill 8360 3.9 4.2 93 5.5 5.4 102
Middle Powder 7760 6.8 6.9 99 3.9 7.9 49
Powder River Pass 9480 7.3 7.0 104 6.5 8.4 77
Soldier Park 8720 3.1 -M * 5.1 -M *
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Basin Index (%) 104 82
TONGUE RIVER
Big Goose 7990 5.4 5.5 98 7.3 7.1 103
Bone Springs Div 9350 9.5 10.4 91 7.9 10.3 77
Burgess Junction 7880 6.0 7.2 83 6.4 8.0 80
Dome Lake 8880 5.5 7.5 73 5.7 8.9 64
Little Goose 8870 6.6 -M * 5.8 -M *
Sucker Creek 8880 7.9 7.7 103 7.3 9.4 78
Tie Creek 6870 3.2 3.7 86 7.6 7.6 100
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Basin Index (%) 89 82
BELLE FOURCHE
Blind Park 6890 6.2 5.4 115 5.7 8.4 68
Cole Canyon 5910 4.9 4.1 120 8.6 6.4 134
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Basin Index (%) 117 97
CHEYENNE RIVER BASIN
Blind Park 6890 6.2 5.4 115 5.7 8.4 68
North Rapid Creek 6130 4.9 5.1 96 5.2 6.8 76
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Basin Index (%) 106 72
UPPER N. PLATTE
Arapaho Ridge 10960 15.7 14.3 110 16.6 15.4 108
Blackhall Mtn 9820 19.8 -M * 22.0 -M *
Columbine 9160 17.7 16.5 107 18.3 17.8 103
Divide Peak 8880 13.2 13.7 96 16.0 14.8 108
Joe Wright 10120 13.5 13.8 98 20.7 17.4 119
Laprele Creek 8375 8.5 6.1 139 9.3 8.1 115
Med Bow 10500 24.7 -M * 23.7 -M *
Never Summer 10280 14.2 13.5 105 12.8 -M *
North French Creek 10130 19.6 18.0 109 21.0 18.2 115
Old Battle 10000 22.3 21.2 105 23.9 24.4 98
Rawah 9020 8.1 7.1 114 10.9 9.6 114
Sage Creek Basin 7850 12.1 9.1 133 11.9 10.6 112
Sand Lake 10050 18.5 17.8 104 15.7 16.3 96
South Brush Creek 8440 7.5 7.8 96 8.5 10.2 83
Tower 10500 32.2 31.1 104 29.0 27.7 105
Webber Springs 9250 15.4 15.8 97 19.7 18.3 108
Whiskey Park 8950 17.4 17.9 97 21.3 19.6 109
Willow Creek Pass 9540 9.5 8.2 116 11.3 9.0 126
Zirkel 9340 19.5 19.9 98 23.6 20.5 115
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Basin Index (%) 105 108
SWEETWATER
Deer Park 9700 10.8 9.5 114 11.4 13.5 84
Larsen Creek 9000 7.0 8.2 85 10.1 -M *
South Pass 9040 9.0 9.9 91 8.1 11.7 69
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Basin Index (%) 97 77
LOWER N. PLATTE
Casper Mtn. 7900 10.1 8.2 123 8.4 9.7 87
Laprele Creek 8375 8.5 6.1 139 9.3 8.1 115
Reno Hill 8400 10.4 8.4 124 11.4 9.7 118
Windy Peak 7900 6.4 4.6 139 6.6 6.8 97
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Basin Index (%) 130 104
LARAMIE RIVER
Brooklyn Lake 10240 14.9 13.1 114 16.7 13.9 120
Cinnabar Park 9574 13.9 14.7 95 16.5 17.3 95
Crow Creek 8330 3.0 5.9 51 6.5 6.8 96
Deadman Hill 10220 12.5 11.0 114 11.9 11.1 107
Rawah 9020 8.1 7.1 114 10.9 9.6 114
Roach 9700 10.4 10.9 95 13.0 12.8 102
Windy Peak 7900 6.4 4.6 139 6.6 6.8 97
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Basin Index (%) 103 105
S. PLATTE
Black Mountain 8920 6.7 -M * 7.8 -M *
Crow Creek 8330 3.0 5.9 51 6.5 6.8 96
Deadman Hill 10220 12.5 11.0 114 11.9 11.1 107
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Basin Index (%) 92 103
LITTLE SNAKE RIVER
Battle Mountain 7440 9.0 8.0 112 -M 10.5 *
Divide Peak 8880 13.2 13.7 96 16.0 14.8 108
Elk River 8700 12.7 12.9 98 12.5 13.9 90
Little Snake River 8915 16.0 17.4 92 25.0 22.6 111
Old Battle 10000 22.3 21.2 105 23.9 24.4 98
Sage Creek Basin 7850 12.1 9.1 133 11.9 10.6 112
Sandstone RS 8150 10.5 9.2 114 12.1 13.0 93
Whiskey Park 8950 17.4 17.9 97 21.3 19.6 109
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Basin Index (%) 103 103
UPPER GREEN RIVER
Big Sandy Opening 9080 9.1 8.7 105 10.0 8.9 112
Blind Bull Sum 8650 13.2 15.4 86 11.1 13.9 80
East Rim Divide 7930 6.6 7.1 93 6.9 8.2 84
Elkhart Park G.S. 9400 7.6 8.1 94 8.9 9.1 98
Gros Ventre Summit 8750 5.6 8.8 64 6.9 8.8 78
Gunsight Pass 9820 7.9 9.0 88 10.2 9.7 105
Kendall R.S. 7740 7.1 8.6 83 7.7 10.0 77
Loomis Park 8240 9.6 10.4 92 10.7 12.2 88
New Fork Lake 8340 6.3 7.3 86 6.1 7.6 80
Pocket Creek 9360 9.7 -M * 10.8 -M *
Snyder Basin 8060 7.7 8.5 91 9.6 10.0 96
Spring Creek Divide 9000 14.7 16.0 92 16.0 16.7 96
Triple Peak 8500 14.6 14.9 98 16.8 17.3 97
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Basin Index (%) 90 91
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.7 -M * 8.9 -M *
Buck Pasture 9632 10.6 -M * 13.6 -M *
EF Blacks Fork GS 9360 8.3 -M * 7.3 -M *
Hams Fork 7840 7.0 8.0 88 7.7 7.9 97
Hewinta 9500 6.7 6.6 102 9.8 9.4 104
Hickerson Park 9122 5.5 4.5 122 7.6 6.6 115
Hole-in-Rock 9168 4.0 4.5 89 7.0 6.2 113
Indian Creek 9425 13.7 16.0 86 11.3 15.2 74
Kelley R.S. 8180 9.2 9.8 94 10.0 12.5 80
Spirit Lk 10235 10.9 -M * 11.2 -M *
Steel Creek Park 10158 11.5 9.7 119 14.1 10.8 131
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Basin Index (%) 97 98
UPPER BEAR RIVER
Bear River RS 8777 7.1 -M * 10.2 -M *
Bug Lake 7987 13.0 12.6 103 15.1 13.4 113
Burts Miller Ranch 8000 4.4 -M * 5.9 -M *
Chalk Creek #1 9171 15.9 15.2 105 19.3 17.0 114
Hayden Fork 9130 11.4 9.9 115 16.3 14.2 115
Kelley R.S. 8180 9.2 9.8 94 10.0 12.5 80
Lily Lake 9133 8.7 8.3 105 11.5 11.6 99
Monte Cristo 8932 19.5 17.8 110 19.4 17.6 110
Salt River Summit 7640 8.4 8.8 95 10.5 11.5 91
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Basin Index (%) 104 104
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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.