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 MONDAY: JANUARY 21 , 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 8.5 10.0 85 10.6 12.6 84
Black Bear 8170 16.4 21.8 75 17.9 22.4 80
Blind Bull Sum 8650 -M 12.7 * -M 11.7 *
Cottonwood Creek 7670 10.8 11.2 96 13.5 14.4 94
East Rim Divide 7930 -M 6.1 * -M 7.0 *
Grand Targhee 9260 24.2 21.5 113 19.4 18.5 105
Granite Creek 6770 8.2 9.2 89 10.1 12.2 83
Grassy Lake 7265 -M 17.5 * -M 21.5 *
Gros Ventre Summit 8750 4.5 7.7 58 5.5 7.5 73
Gunsight Pass 9820 6.0 7.7 78 8.3 8.1 102
Lewis Lake Divide 7850 13.2 17.4 76 17.4 21.0 83
Phillips Bench 8200 -M 15.6 * -M 16.4 *
Salt River Summit 7640 5.9 6.9 86 8.1 9.7 84
Snake River Station 6920 -M 9.4 * -M 13.9 *
Spring Creek Divide 9000 11.2 12.6 89 12.8 14.0 91
Thumb Divide 7980 6.2 8.4 74 8.3 11.0 75
Togwotee Pass 9580 12.3 13.2 93 13.1 14.5 90
Two Ocean Plateau 9240 14.4 15.8 91 12.4 15.8 78
Willow Creek 8080 13.2 15.2 87 17.7 19.6 90
Younts Peak 8350 -M 8.8 * -M 9.6 *
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Basin Index (%) 87 87
MADISON-GALLATIN
Black Bear 8170 16.4 21.8 75 17.9 22.4 80
Canyon 7870 5.8 7.5 77 7.4 9.7 76
Madison Plateau 7750 -M 13.2 * -M 15.7 *
West Yellowstone 6700 5.4 6.6 82 7.0 8.7 80
Whiskey Creek 6800 6.1 8.8 69 6.8 12.1 56
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Basin Index (%) 75 74
YELLOWSTONE
Beartooth Lake 9360 -M 12.8 * -M 11.6 *
Burnt Mtn 5880 3.2 2.3 139 7.2 7.5 96
Canyon 7870 5.8 7.5 77 7.4 9.7 76
Cole Creek 7850 7.9 7.5 105 7.3 7.2 101
Evening Star 9200 13.8 14.4 96 16.7 16.4 102
Fisher Creek 9100 13.1 19.2 68 16.6 18.8 88
Northeast Entrance 7350 -M 5.7 * -M 7.6 *
Parker Peak 9400 12.3 12.0 102 13.0 10.5 124
Sylvan Lake 8420 -M 11.6 * -M 13.6 *
Thumb Divide 7980 6.2 8.4 74 8.3 11.0 75
Two Ocean Plateau 9240 14.4 15.8 91 12.4 15.8 78
White Mill 8700 9.7 13.4 72 8.7 14.0 62
Wolverine 7650 -M 6.3 * -M 7.6 *
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Basin Index (%) 86 88
WIND RIVER
Burroughs Creek 8750 4.3 -M * 6.0 -M *
Castle Creek 8400 -M -M * -M -M *
Cold Springs 9630 -M 4.2 * -M 5.8 *
Deer Park 9700 -M 7.9 * -M 11.4 *
Hobbs Park 10100 6.4 7.5 85 5.1 7.2 71
Kirwin 9550 4.5 5.3 85 4.8 6.8 71
Little Warm 9370 -M 5.8 * -M 7.5 *
Owl Creek 8975 -M 3.0 * -M 3.3 *
South Pass 9040 -M 8.1 * -M 10.1 *
St. Lawrence Alt 8620 2.2 3.7 59 4.4 5.0 88
Togwotee Pass 9580 12.3 13.2 93 13.1 14.5 90
Townsend Creek 8700 -M 4.6 * -M 6.7 *
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Basin Index (%) 86* 82*
BIGHORN BASIN
Bald Mtn. 9380 10.0 10.1 99 6.5 9.8 66
Bear Trap Meadow 8200 4.8 3.1 155 4.7 4.9 96
Bone Springs Div 9350 7.5 9.1 82 6.6 8.8 75
Grave Springs 8550 3.9 4.6 85 5.0 6.0 83
Kirwin 9550 4.5 5.3 85 4.8 6.8 71
Marquette 8760 4.4 -M * 5.6 -M *
Middle Powder 7760 5.2 6.1 85 4.0 6.9 58
Owl Creek 8975 -M 3.0 * -M 3.3 *
Powder River Pass 9480 5.7 5.9 97 5.3 7.2 74
Shell Creek 9580 -M 8.6 * -M 8.0 *
Timber Creek 7950 2.1 2.8 75 3.8 4.3 88
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Basin Index (%) 93 74
SHOSHONE RIVER
Blackwater 9780 12.7 13.1 97 13.4 12.2 110
Evening Star 9200 13.8 14.4 96 16.7 16.4 102
Marquette 8760 4.4 -M * 5.6 -M *
Sylvan Road 7120 -M 7.2 * -M 10.9 *
Younts Peak 8350 -M 8.8 * -M 9.6 *
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Basin Index (%) 96* 105*
POWDER RIVER
Bear Trap Meadow 8200 4.8 3.1 155 4.7 4.9 96
Cloud Peak Reservoir 9860 -M 7.6 * -M 7.4 *
Grave Springs 8550 3.9 4.6 85 5.0 6.0 83
Hansen Sawmill 8360 3.3 3.7 89 4.9 4.7 104
Middle Powder 7760 5.2 6.1 85 4.0 6.9 58
Powder River Pass 9480 5.7 5.9 97 5.3 7.2 74
Soldier Park 8720 2.6 -M * 4.7 -M *
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Basin Index (%) 98 80
TONGUE RIVER
Big Goose 7990 4.1 4.4 93 5.9 6.0 98
Bone Springs Div 9350 7.5 9.1 82 6.6 8.8 75
Burgess Junction 7880 4.4 6.2 71 5.2 7.0 74
Dome Lake 8880 -M 6.4 * -M 7.8 *
Little Goose 8870 -M -M * -M -M *
Sucker Creek 8880 -M 6.6 * -M 8.0 *
Tie Creek 6870 2.1 3.1 68 6.3 6.7 94
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Basin Index (%) 79 84
BELLE FOURCHE
Cole Canyon 5910 3.3 3.0 110 6.4 5.3 121
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Basin Index (%) 110 121
CHEYENNE RIVER BASIN
Blind Park 6890 3.7 4.1 90 3.9 7.2 54
North Rapid Creek 6130 -M 3.8 * -M 5.8 *
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Basin Index (%) 90 54
UPPER N. PLATTE
Arapaho Ridge 10960 13.4 11.3 119 14.5 13.0 112
Blackhall Mtn 9820 15.8 -M * 18.6 -M *
Columbine 9160 13.9 13.0 107 15.7 14.7 107
Divide Peak 8880 10.5 11.1 95 13.4 12.5 107
Joe Wright 10120 11.6 12.0 97 18.0 14.7 122
Laprele Creek 8375 -M 5.2 * -M 7.0 *
Med Bow 10500 20.2 -M * 20.3 -M *
North French Creek 10130 15.9 14.5 110 17.7 15.3 116
Never Summer 10280 11.5 11.0 105 11.1 -M *
Old Battle 10000 -M 16.5 * -M 20.4 *
Rawah 9020 5.8 5.7 102 8.8 8.6 102
Sage Creek Basin 7850 9.1 7.5 121 10.0 8.8 114
Sand Lake 10050 14.8 15.0 99 12.8 13.8 93
South Brush Creek 8440 -M 6.5 * -M 8.7 *
Tower 10500 26.6 24.2 110 25.1 23.2 108
Webber Springs 9250 12.5 12.3 102 16.4 15.5 106
Willow Creek Pass 9540 8.1 6.6 123 10.0 7.6 132
Zirkel 9340 14.9 16.3 91 19.5 16.9 115
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Basin Index (%) 105 111
SWEETWATER
Deer Park 9700 -M 7.9 * -M 11.4 *
Larsen Creek 9000 4.7 6.4 73 7.8 -M *
South Pass 9040 -M 8.1 * -M 10.1 *
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Basin Index (%) 73* *
LOWER N. PLATTE
Casper Mtn. 7900 7.2 6.9 104 6.4 8.4 76
Laprele Creek 8375 -M 5.2 * -M 7.0 *
Reno Hill 8400 7.5 7.0 107 8.5 8.3 102
Windy Peak 7900 -M 3.8 * -M 5.9 *
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Basin Index (%) 106 89
LARAMIE RIVER
Brooklyn Lake 10240 12.4 11.2 111 14.1 11.7 121
Cinnabar Park 9574 -M 11.9 * -M 14.5 *
Crow Creek 8330 1.9 5.4 35 5.2 6.1 85
Deadman Hill 10220 10.0 8.7 115 9.6 9.4 102
Rawah 9020 5.8 5.7 102 8.8 8.6 102
Roach 9700 8.1 9.2 88 10.4 10.8 96
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Basin Index (%) 95 103
S. PLATTE
Black Mountain 8920 4.7 -M * 5.7 -M *
Crow Creek 8330 1.9 5.4 35 5.2 6.1 85
Deadman Hill 10220 10.0 8.7 115 9.6 9.4 102
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Basin Index (%) 84 95
LITTLE SNAKE RIVER
Battle Mountain 7440 7.4 6.1 121 9.5 8.9 107
Divide Peak 8880 10.5 11.1 95 13.4 12.5 107
Elk River 8700 -M 9.8 * -M 11.6 *
Little Snake River 8915 -M 12.9 * -M 18.7 *
Old Battle 10000 -M 16.5 * -M 20.4 *
Sage Creek Basin 7850 9.1 7.5 121 10.0 8.8 114
Sandstone RS 8150 9.1 7.2 126 10.5 10.9 96
Whiskey Park 8950 14.1 14.7 96 18.1 16.1 112
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Basin Index (%) 108 108
UPPER GREEN RIVER
Big Sandy Opening 9080 6.3 7.1 89 7.3 7.7 95
Blind Bull Sum 8650 -M 12.7 * -M 11.7 *
East Rim Divide 7930 -M 6.1 * -M 7.0 *
Elkhart Park G.S. 9400 6.0 6.9 87 6.9 7.8 88
Gros Ventre Summit 8750 4.5 7.7 58 5.5 7.5 73
Gunsight Pass 9820 6.0 7.7 78 8.3 8.1 102
Kendall R.S. 7740 -M 6.8 * -M 8.4 *
Loomis Park 8240 7.2 8.5 85 8.6 10.2 84
New Fork Lake 8340 -M 6.2 * -M 6.4 *
Pocket Creek 9360 7.9 -M * 8.9 -M *
Snyder Basin 8060 6.0 6.6 91 7.9 8.4 94
Spring Creek Divide 9000 11.2 12.6 89 12.8 14.0 91
Triple Peak 8500 11.2 11.7 96 13.4 14.5 92
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Basin Index (%) 85 90
LOWER GREEN RIVER
Blacks Fork Jct 8869 4.8 -M * 7.4 -M *
Buck Pasture 9632 7.8 -M * 10.8 -M *
EF Blacks Fork GS 9360 6.0 -M * 6.2 -M *
Hams Fork 7840 5.4 6.3 86 6.6 6.7 99
Hewinta 9500 5.4 5.1 106 8.4 7.9 106
Hickerson Park 9122 -M 3.3 * -M 5.7 *
Hole-in-Rock 9168 -M 3.7 * -M 5.4 *
Indian Creek 9425 -M 13.3 * -M 12.7 *
Kelley R.S. 8180 -M 7.9 * -M 10.5 *
Spirit Lk 10235 -M -M * -M -M *
Steel Creek Park 10158 8.2 7.6 108 10.2 9.0 113
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Basin Index (%) 100* 107*
UPPER BEAR RIVER
Bear River RS 8777 5.0 -M * 8.2 -M *
Bug Lake 7987 -M 9.1 * -M 11.3 *
Burts Miller Ranch 8000 2.8 -M * 4.9 -M *
Chalk Creek #1 9171 10.9 12.0 91 15.7 14.2 111
Hayden Fork 9130 -M 7.7 * -M 12.0 *
Kelley R.S. 8180 -M 7.9 * -M 10.5 *
Lily Lake 9133 6.5 6.7 97 9.2 9.8 94
Monte Cristo 8932 13.3 14.0 95 14.8 14.9 99
Salt River Summit 7640 5.9 6.9 86 8.1 9.7 84
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Basin Index (%) 92* 98*
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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.