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 FRIDAY: FEBRUARY 15 , 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 13.4 12.6 106 15.3 15.5 99
Black Bear 8170 27.2 27.1 100 27.6 27.6 100
Blind Bull Sum 8650 14.9 15.9 94 12.8 14.4 89
Cottonwood Creek 7670 15.4 14.6 105 18.3 17.6 104
East Rim Divide 7930 7.9 7.3 108 8.1 8.5 95
Grand Targhee 9260 32.1 26.4 122 24.8 23.0 108
Granite Creek 6770 13.6 12.2 111 15.0 15.0 100
Grassy Lake 7265 22.2 23.8 93 25.8 26.8 96
Gros Ventre Summit 8750 6.7 8.9 75 7.9 9.0 88
Gunsight Pass 9820 9.3 9.4 99 11.4 10.0 114
Lewis Lake Divide 7850 22.1 23.0 96 25.4 25.9 98
Phillips Bench 8200 20.0 17.7 113 21.6 20.3 106
Salt River Summit 7640 9.5 9.2 103 11.5 11.9 97
Snake River Station 6920 13.4 13.0 103 18.1 17.1 106
Spring Creek Divide 9000 16.5 16.3 101 17.6 17.3 102
Thumb Divide 7980 11.5 10.6 108 12.8 13.3 96
Togwotee Pass 9580 17.1 16.4 104 17.8 17.6 101
Two Ocean Plateau 9240 20.2 19.4 104 17.1 19.4 88
Willow Creek 8080 19.5 19.3 101 23.5 24.1 98
Younts Peak 8350 -M 10.7 * -M 11.6 *
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Basin Index (%) 103 99
MADISON-GALLATIN
Black Bear 8170 27.2 27.1 100 27.6 27.6 100
Canyon 7870 9.1 9.3 98 10.8 11.9 91
Madison Plateau 7750 16.8 15.6 108 16.9 19.0 89
West Yellowstone 6700 9.5 7.6 125 -M 10.7 *
Whiskey Creek 6800 11.7 10.7 109 12.2 14.6 84
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Basin Index (%) 106 92
YELLOWSTONE
Beartooth Lake 9360 12.4 15.3 81 11.4 14.3 80
Burnt Mtn 5880 5.5 3.4 162 9.8 8.6 114
Canyon 7870 9.1 9.3 98 10.8 11.9 91
Cole Creek 7850 11.6 8.8 132 -M 8.3 *
Evening Star 9200 17.8 17.5 102 20.6 20.1 102
Fisher Creek 9100 19.7 23.0 86 23.2 23.0 101
Northeast Entrance 7350 7.5 7.3 103 9.8 9.1 108
Parker Peak 9400 16.0 14.0 114 16.6 12.7 131
Sylvan Lake 8420 14.2 14.0 101 19.6 16.3 120
Thumb Divide 7980 11.5 10.6 108 12.8 13.3 96
Two Ocean Plateau 9240 20.2 19.4 104 17.1 19.4 88
White Mill 8700 14.8 16.2 91 13.0 17.2 76
Wolverine 7650 8.1 7.8 104 8.7 9.1 96
Younts Peak 8350 -M 10.7 * -M 11.6 *
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Basin Index (%) 101 99
WIND RIVER
Burroughs Creek 8750 6.6 -M * 8.2 -M *
Castle Creek 8400 3.1 -M * 4.3 -M *
Cold Springs 9630 5.2 5.1 102 5.3 6.7 79
Deer Park 9700 12.1 9.7 125 12.9 13.9 93
Hobbs Park 10100 10.3 8.5 121 7.6 8.6 88
Kirwin 9550 6.8 6.2 110 7.0 7.9 89
Little Warm 9370 5.9 7.2 82 6.4 8.9 72
Owl Creek 8975 4.1 3.3 124 4.8 3.9 123
South Pass 9040 10.3 10.1 102 8.8 12.1 73
St. Lawrence Alt 8620 3.5 4.5 78 6.4 5.8 110
Togwotee Pass 9580 17.1 16.4 104 17.8 17.6 101
Townsend Creek 8700 6.9 5.8 119 7.5 7.8 96
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Basin Index (%) 107 91
BIGHORN BASIN
Bald Mtn. 9380 13.1 12.8 102 8.9 11.8 75
Bear Trap Meadow 8200 6.0 3.8 158 5.5 5.6 98
Bone Springs Div 9350 9.8 10.7 92 8.4 10.6 79
Grave Springs 8550 5.6 5.5 102 7.4 7.1 104
Kirwin 9550 6.8 6.2 110 7.0 7.9 89
Marquette 8760 5.8 -M * 7.3 -M *
Middle Powder 7760 6.9 7.1 97 4.2 8.0 52
Owl Creek 8975 4.1 3.3 124 4.8 3.9 123
Powder River Pass 9480 7.6 7.1 107 7.0 8.6 81
Shell Creek 9580 10.4 10.1 103 8.8 9.6 92
Timber Creek 7950 3.0 3.1 97 4.7 4.8 98
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Basin Index (%) 105 86
SHOSHONE RIVER
Blackwater 9780 15.6 15.5 101 16.5 14.6 113
Evening Star 9200 17.8 17.5 102 20.6 20.1 102
Marquette 8760 5.8 -M * 7.3 -M *
Sylvan Lake 8420 14.2 14.0 101 19.6 16.3 120
Sylvan Road 7120 8.4 8.6 98 11.3 12.9 88
Younts Peak 8350 -M 10.7 * -M 11.6 *
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Basin Index (%) 101 106
POWDER RIVER
Bear Trap Meadow 8200 6.0 3.8 158 5.5 5.6 98
Cloud Peak Reservoir 9860 9.2 9.5 97 8.2 8.6 95
Grave Springs 8550 5.6 5.5 102 7.4 7.1 104
Hansen Sawmill 8360 4.2 4.3 98 5.7 5.5 104
Middle Powder 7760 6.9 7.1 97 4.2 8.0 52
Powder River Pass 9480 7.6 7.1 107 7.0 8.6 81
Soldier Park 8720 3.3 -M * 5.4 -M *
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Basin Index (%) 106 88
TONGUE RIVER
Big Goose 7990 5.6 5.6 100 7.5 7.2 104
Bone Springs Div 9350 9.8 10.7 92 8.4 10.6 79
Burgess Junction 7880 6.2 7.4 84 6.8 8.2 83
Dome Lake 8880 6.0 7.7 78 6.0 9.1 66
Little Goose 8870 6.9 -M * 5.9 -M *
Sucker Creek 8880 8.2 7.9 104 7.9 9.5 83
Tie Creek 6870 3.3 3.8 87 7.6 7.7 99
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Basin Index (%) 91 85
BELLE FOURCHE
Blind Park 6890 6.3 5.6 112 5.8 8.5 68
Cole Canyon 5910 4.9 4.4 111 8.6 6.5 132
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Basin Index (%) 112 96
CHEYENNE RIVER BASIN
Blind Park 6890 6.3 5.6 112 5.8 8.5 68
North Rapid Creek 6130 5.0 5.3 94 5.2 6.9 75
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Basin Index (%) 104 71
UPPER N. PLATTE
Arapaho Ridge 10960 17.5 14.6 120 18.3 16.0 114
Blackhall Mtn 9820 21.6 -M * 23.5 -M *
Columbine 9160 19.9 17.1 116 20.7 18.4 112
Divide Peak 8880 14.2 13.9 102 16.7 15.3 109
Joe Wright 10120 14.2 14.4 99 21.3 17.9 119
Laprele Creek 8375 8.8 6.4 138 9.5 8.4 113
Med Bow 10500 25.5 -M * 24.3 -M *
Never Summer 10280 15.0 13.9 108 13.2 -M *
North French Creek 10130 20.1 18.9 106 21.2 18.9 112
Old Battle 10000 24.7 21.7 114 26.0 25.3 103
Rawah 9020 8.3 7.3 114 11.4 9.8 116
Sage Creek Basin 7850 13.5 9.5 142 13.1 10.9 120
Sand Lake 10050 19.3 18.3 105 16.1 16.9 95
South Brush Creek 8440 7.6 8.2 93 8.7 10.5 83
Tower 10500 36.2 32.0 113 32.3 28.6 113
Webber Springs 9250 17.5 16.4 107 -M 19.0 *
Whiskey Park 8950 20.3 18.8 108 23.5 20.3 116
Willow Creek Pass 9540 10.0 8.4 119 11.9 9.3 128
Zirkel 9340 22.2 20.6 108 26.2 21.3 123
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Basin Index (%) 111 112
SWEETWATER
Deer Park 9700 12.1 9.7 125 12.9 13.9 93
Larsen Creek 9000 8.5 8.4 101 11.4 -M *
South Pass 9040 10.3 10.1 102 8.8 12.1 73
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Basin Index (%) 110 83
LOWER N. PLATTE
Casper Mtn. 7900 10.2 8.7 117 8.7 10.0 87
Laprele Creek 8375 8.8 6.4 138 9.5 8.4 113
Reno Hill 8400 10.7 8.6 124 11.6 10.0 116
Windy Peak 7900 6.8 5.0 136 7.0 7.1 99
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Basin Index (%) 127 104
LARAMIE RIVER
Brooklyn Lake 10240 15.9 13.6 117 17.2 14.4 119
Cinnabar Park 9574 14.5 15.6 93 16.8 18.0 93
Crow Creek 8330 2.8 6.2 45 6.5 7.1 92
Deadman Hill 10220 13.1 11.3 116 12.3 11.4 108
Rawah 9020 8.3 7.3 114 11.4 9.8 116
Roach 9700 11.1 11.3 98 13.8 13.2 105
Windy Peak 7900 6.8 5.0 136 7.0 7.1 99
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Basin Index (%) 103 105
S. PLATTE
Black Mountain 8920 7.0 -M * 7.9 -M *
Crow Creek 8330 2.8 6.2 45 6.5 7.1 92
Deadman Hill 10220 13.1 11.3 116 12.3 11.4 108
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Basin Index (%) 91 102
LITTLE SNAKE RIVER
Battle Mountain 7440 9.7 8.4 115 -M 11.0 *
Divide Peak 8880 14.2 13.9 102 16.7 15.3 109
Elk River 8700 13.9 13.5 103 13.0 14.4 90
Little Snake River 8915 19.4 18.0 108 27.6 23.0 120
Old Battle 10000 24.7 21.7 114 26.0 25.3 103
Sage Creek Basin 7850 13.5 9.5 142 13.1 10.9 120
Sandstone RS 8150 11.9 9.6 124 13.0 13.5 96
Whiskey Park 8950 20.3 18.8 108 23.5 20.3 116
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Basin Index (%) 113 108
UPPER GREEN RIVER
Big Sandy Opening 9080 10.1 8.9 113 11.1 9.3 119
Blind Bull Sum 8650 14.9 15.9 94 12.8 14.4 89
East Rim Divide 7930 7.9 7.3 108 8.1 8.5 95
Elkhart Park G.S. 9400 8.8 8.4 105 9.8 9.3 105
Gros Ventre Summit 8750 6.7 8.9 75 7.9 9.0 88
Gunsight Pass 9820 9.3 9.4 99 11.4 10.0 114
Indian Creek 9425 15.3 16.3 94 12.5 15.8 79
Kendall R.S. 7740 8.3 8.8 94 8.9 10.3 86
Loomis Park 8240 11.3 10.5 108 12.4 12.5 99
New Fork Lake 8340 7.3 7.4 99 6.7 7.8 86
Pocket Creek 9360 10.7 -M * 11.6 -M *
Snyder Basin 8060 8.7 8.9 98 10.4 10.3 101
Spring Creek Divide 9000 16.5 16.3 101 17.6 17.3 102
Triple Peak 8500 16.1 15.3 105 18.2 17.9 102
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Basin Index (%) 99 97
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.4 -M * 9.1 -M *
Buck Pasture 9632 11.5 -M * 14.1 -M *
EF Blacks Fork GS 9360 8.5 -M * 8.0 -M *
Hams Fork 7840 7.8 8.2 95 8.3 8.2 101
Hewinta 9500 7.1 6.8 104 10.2 9.7 105
Hickerson Park 9122 5.8 4.9 118 8.0 6.8 118
Hole-in-Rock 9168 4.3 4.7 91 7.3 6.4 114
Indian Creek 9425 15.3 16.3 94 12.5 15.8 79
Kelley R.S. 8180 10.3 10.3 100 10.9 13.0 84
Spirit Lk 10235 11.4 -M * 11.6 -M *
Steel Creek Park 10158 10.7 10.1 106 12.8 11.1 115
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Basin Index (%) 100 99
UPPER BEAR RIVER
Bear River RS 8777 7.8 -M * 10.7 -M *
Bug Lake 7987 15.4 13.0 118 17.1 13.8 124
Burts Miller Ranch 8000 4.8 -M * 6.2 -M *
Chalk Creek #1 9171 17.8 15.7 113 21.4 17.5 122
Hayden Fork 9130 12.6 10.6 119 17.4 14.7 118
Kelley R.S. 8180 10.3 10.3 100 10.9 13.0 84
Lily Lake 9133 8.9 8.7 102 11.8 11.9 99
Monte Cristo 8932 22.0 18.4 120 20.3 18.2 112
Salt River Summit 7640 9.5 9.2 103 11.5 11.9 97
Spring Creek Divide 9000 16.5 16.3 101 17.6 17.3 102
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Basin Index (%) 111 108
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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.