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: FEBRUARY 16 , 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 13.6 12.7 107 15.6 15.6 100
Black Bear 8170 27.9 27.2 103 28.0 27.9 100
Blind Bull Sum 8650 15.5 16.1 96 13.0 14.5 90
Cottonwood Creek 7670 15.9 14.8 107 18.8 17.7 106
East Rim Divide 7930 -M 7.3 * -M 8.5 *
Grand Targhee 9260 32.5 26.6 122 24.9 23.3 107
Granite Creek 6770 -M 12.4 * -M 15.1 *
Grassy Lake 7265 22.6 24.1 94 26.2 27.0 97
Gros Ventre Summit 8750 6.9 8.9 78 8.0 9.1 88
Gunsight Pass 9820 -M 9.5 * -M 10.0 *
Lewis Lake Divide 7850 22.2 23.2 96 25.6 26.1 98
Phillips Bench 8200 -M 17.9 * -M 20.5 *
Salt River Summit 7640 9.8 9.3 105 11.7 12.1 97
Snake River Station 6920 13.5 13.1 103 18.3 17.2 106
Spring Creek Divide 9000 16.8 16.4 102 17.8 17.4 102
Thumb Divide 7980 -M 10.7 * -M 13.3 *
Togwotee Pass 9580 -M 16.5 * -M 17.7 *
Two Ocean Plateau 9240 20.5 19.5 105 17.3 19.6 88
Willow Creek 8080 -M 19.6 * -M 24.2 *
Younts Peak 8350 -M 10.9 * -M 11.6 *
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Basin Index (%) 103 99
MADISON-GALLATIN
Black Bear 8170 27.9 27.2 103 28.0 27.9 100
Canyon 7870 9.2 9.4 98 10.9 12.0 91
Madison Plateau 7750 17.3 15.7 110 17.8 19.1 93
West Yellowstone 6700 9.7 7.7 126 11.5 10.7 107
Whiskey Creek 6800 12.0 10.8 111 12.5 14.8 84
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Basin Index (%) 107 96
YELLOWSTONE
Beartooth Lake 9360 12.6 15.4 82 11.5 14.4 80
Burnt Mtn 5880 5.5 3.5 157 9.9 8.7 114
Canyon 7870 9.2 9.4 98 10.9 12.0 91
Cole Creek 7850 11.6 8.9 130 -M 8.4 *
Evening Star 9200 18.2 17.7 103 20.7 20.2 102
Fisher Creek 9100 20.2 23.3 87 23.5 23.2 101
Northeast Entrance 7350 7.7 7.4 104 10.0 9.2 109
Parker Peak 9400 16.3 14.1 116 16.9 12.7 133
Sylvan Lake 8420 -M 14.2 * -M 16.4 *
Thumb Divide 7980 -M 10.7 * -M 13.3 *
Two Ocean Plateau 9240 20.5 19.5 105 17.3 19.6 88
White Mill 8700 14.9 16.3 91 13.2 17.3 76
Wolverine 7650 -M 7.9 * -M 9.1 *
Younts Peak 8350 -M 10.9 * -M 11.6 *
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Basin Index (%) 101 98
WIND RIVER
Burroughs Creek 8750 -M -M * -M -M *
Castle Creek 8400 3.1 -M * 4.3 -M *
Cold Springs 9630 5.1 5.1 100 5.3 6.8 78
Deer Park 9700 12.6 9.8 129 13.4 14.0 96
Hobbs Park 10100 -M 8.6 * -M 8.6 *
Kirwin 9550 -M 6.2 * -M 8.0 *
Little Warm 9370 6.0 7.3 82 6.3 9.0 70
Owl Creek 8975 4.1 3.3 124 4.7 3.9 121
South Pass 9040 10.7 10.2 105 9.2 12.2 75
St. Lawrence Alt 8620 3.5 4.6 76 6.5 5.9 110
Togwotee Pass 9580 -M 16.5 * -M 17.7 *
Townsend Creek 8700 7.0 5.8 121 7.6 7.9 96
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Basin Index (%) 106 89
BIGHORN BASIN
Bald Mtn. 9380 -M 13.0 * -M 11.8 *
Bear Trap Meadow 8200 6.3 3.8 166 5.6 5.6 100
Bone Springs Div 9350 -M 10.8 * -M 10.6 *
Grave Springs 8550 -M 5.6 * -M 7.2 *
Kirwin 9550 -M 6.2 * -M 8.0 *
Marquette 8760 5.6 -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 4.7 3.9 121
Powder River Pass 9480 8.0 7.2 111 7.2 8.7 83
Shell Creek 9580 10.7 10.1 106 9.1 9.7 94
Timber Creek 7950 3.0 3.1 97 4.7 4.8 98
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Basin Index (%) 113 87
SHOSHONE RIVER
Blackwater 9780 15.8 15.6 101 16.6 14.7 113
Evening Star 9200 18.2 17.7 103 20.7 20.2 102
Marquette 8760 5.6 -M * 7.3 -M *
Sylvan Lake 8420 -M 14.2 * -M 16.4 *
Sylvan Road 7120 -M 8.7 * -M 13.0 *
Younts Peak 8350 -M 10.9 * -M 11.6 *
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Basin Index (%) 102* 107*
POWDER RIVER
Bear Trap Meadow 8200 6.3 3.8 166 5.6 5.6 100
Cloud Peak Reservoir 9860 -M 9.6 * -M 8.7 *
Grave Springs 8550 -M 5.6 * -M 7.2 *
Hansen Sawmill 8360 -M 4.3 * -M 5.5 *
Middle Powder 7760 6.9 7.1 97 4.2 8.0 52
Powder River Pass 9480 8.0 7.2 111 7.2 8.7 83
Soldier Park 8720 3.2 -M * 5.3 -M *
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Basin Index (%) 117* 76*
TONGUE RIVER
Big Goose 7990 -M 5.7 * -M 7.3 *
Bone Springs Div 9350 -M 10.8 * -M 10.6 *
Burgess Junction 7880 6.2 7.4 84 6.7 8.2 82
Dome Lake 8880 6.1 7.8 78 5.9 9.2 64
Little Goose 8870 6.8 -M * 5.9 -M *
Sucker Creek 8880 -M 8.0 * -M 9.6 *
Tie Creek 6870 -M 3.9 * -M 7.8 *
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Basin Index (%) 81* 72*
BELLE FOURCHE
Blind Park 6890 6.6 5.6 118 5.9 8.5 69
Cole Canyon 5910 -M 4.5 * -M 6.5 *
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Basin Index (%) 118 69
CHEYENNE RIVER BASIN
Blind Park 6890 6.6 5.6 118 5.9 8.5 69
North Rapid Creek 6130 -M 5.3 * -M 7.0 *
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Basin Index (%) 118 69
UPPER N. PLATTE
Arapaho Ridge 10960 17.8 14.7 121 18.4 16.1 114
Blackhall Mtn 9820 22.2 -M * 23.9 -M *
Columbine 9160 20.3 17.3 117 21.1 18.5 114
Divide Peak 8880 -M 14.0 * -M 15.4 *
Joe Wright 10120 -M 14.6 * -M 18.0 *
Laprele Creek 8375 -M 6.6 * -M 8.4 *
Med Bow 10500 -M -M * -M -M *
Never Summer 10280 15.2 14.1 108 13.2 -M *
North French Creek 10130 20.3 19.1 106 21.5 19.0 113
Old Battle 10000 25.1 22.0 114 26.4 25.5 104
Rawah 9020 8.6 7.4 116 11.5 9.9 116
Sage Creek Basin 7850 13.5 9.6 141 13.2 10.9 121
Sand Lake 10050 19.6 18.5 106 16.3 17.0 96
South Brush Creek 8440 7.8 8.4 93 8.6 10.6 81
Tower 10500 37.1 32.4 115 33.2 28.8 115
Webber Springs 9250 17.9 16.6 108 24.5 19.1 128
Whiskey Park 8950 -M 19.1 * -M 20.4 *
Willow Creek Pass 9540 10.2 8.5 120 12.0 9.3 129
Zirkel 9340 -M 20.8 * -M 21.3 *
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Basin Index (%) 113 112
SWEETWATER
Deer Park 9700 12.6 9.8 129 13.4 14.0 96
Larsen Creek 9000 8.9 8.5 105 11.8 -M *
South Pass 9040 10.7 10.2 105 9.2 12.2 75
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Basin Index (%) 113 86
LOWER N. PLATTE
Casper Mtn. 7900 10.5 8.8 119 8.8 10.1 87
Laprele Creek 8375 -M 6.6 * -M 8.4 *
Reno Hill 8400 10.9 8.8 124 11.7 10.1 116
Windy Peak 7900 -M 5.1 * -M 7.1 *
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Basin Index (%) 122 101
LARAMIE RIVER
Brooklyn Lake 10240 -M 13.8 * -M 14.5 *
Cinnabar Park 9574 14.6 15.8 92 17.0 18.1 94
Crow Creek 8330 2.9 6.3 46 6.6 7.1 93
Deadman Hill 10220 -M 11.4 * -M 11.5 *
Rawah 9020 8.6 7.4 116 11.5 9.9 116
Roach 9700 11.4 11.5 99 14.2 13.3 107
Windy Peak 7900 -M 5.1 * -M 7.1 *
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Basin Index (%) 91 102
S. PLATTE
Black Mountain 8920 7.1 -M * 8.0 -M *
Crow Creek 8330 2.9 6.3 46 6.6 7.1 93
Deadman Hill 10220 -M 11.4 * -M 11.5 *
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Basin Index (%) 46* 93*
LITTLE SNAKE RIVER
Battle Mountain 7440 -M 8.6 * -M 11.0 *
Divide Peak 8880 -M 14.0 * -M 15.4 *
Elk River 8700 14.1 13.7 103 13.4 14.5 92
Little Snake River 8915 19.8 18.2 109 28.3 23.1 123
Old Battle 10000 25.1 22.0 114 26.4 25.5 104
Sage Creek Basin 7850 13.5 9.6 141 13.2 10.9 121
Sandstone RS 8150 12.0 9.8 122 13.2 13.6 97
Whiskey Park 8950 -M 19.1 * -M 20.4 *
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Basin Index (%) 115 108
UPPER GREEN RIVER
Big Sandy Opening 9080 -M 9.0 * -M 9.3 *
Blind Bull Sum 8650 15.5 16.1 96 13.0 14.5 90
East Rim Divide 7930 -M 7.3 * -M 8.5 *
Elkhart Park G.S. 9400 -M 8.5 * -M 9.4 *
Gros Ventre Summit 8750 6.9 8.9 78 8.0 9.1 88
Gunsight Pass 9820 -M 9.5 * -M 10.0 *
Indian Creek 9425 15.9 16.5 96 12.8 16.0 80
Kendall R.S. 7740 8.4 8.9 94 8.9 10.4 86
Loomis Park 8240 -M 10.5 * -M 12.6 *
New Fork Lake 8340 7.4 7.5 99 7.0 7.8 90
Pocket Creek 9360 -M -M * -M -M *
Snyder Basin 8060 -M 8.9 * -M 10.4 *
Spring Creek Divide 9000 16.8 16.4 102 17.8 17.4 102
Triple Peak 8500 -M 15.4 * -M 18.0 *
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Basin Index (%) 95* 90*
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.6 -M * 9.4 -M *
Buck Pasture 9632 -M -M * -M -M *
EF Blacks Fork GS 9360 9.1 -M * 7.9 -M *
Hams Fork 7840 8.0 8.3 96 8.4 8.2 102
Hewinta 9500 7.5 6.9 109 10.5 9.8 107
Hickerson Park 9122 -M 5.0 * -M 6.9 *
Hole-in-Rock 9168 -M 4.7 * -M 6.4 *
Indian Creek 9425 15.9 16.5 96 12.8 16.0 80
Kelley R.S. 8180 10.5 10.5 100 11.1 13.1 85
Spirit Lk 10235 11.6 -M * 11.9 -M *
Steel Creek Park 10158 11.2 10.2 110 13.2 11.2 118
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Basin Index (%) 101* 96*
UPPER BEAR RIVER
Bear River RS 8777 -M -M * -M -M *
Bug Lake 7987 15.8 13.1 121 17.3 13.9 124
Burts Miller Ranch 8000 5.4 -M * 6.4 -M *
Chalk Creek #1 9171 -M 15.9 * -M 17.6 *
Hayden Fork 9130 13.2 10.8 122 18.0 14.8 122
Kelley R.S. 8180 10.5 10.5 100 11.1 13.1 85
Lily Lake 9133 9.3 8.9 104 12.4 12.0 103
Monte Cristo 8932 -M 18.7 * -M 18.3 *
Salt River Summit 7640 9.8 9.3 105 11.7 12.1 97
Spring Creek Divide 9000 16.8 16.4 102 17.8 17.4 102
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Basin Index (%) 109 106
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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.
