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 5 , 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 10.6 11.0 96 12.6 14.4 88
Black Bear 8170 21.5 23.7 91 22.6 25.5 89
Blind Bull Sum 8650 12.5 14.5 86 10.5 13.2 80
Cottonwood Creek 7670 13.5 13.6 99 16.2 16.3 99
East Rim Divide 7930 6.4 6.9 93 6.8 7.9 86
Grand Targhee 9260 28.8 24.1 120 22.6 21.3 106
Granite Creek 6770 10.7 11.0 97 12.4 14.0 89
Grassy Lake 7265 17.4 21.0 83 21.1 24.6 86
Gros Ventre Summit 8750 5.5 8.6 64 6.5 8.4 77
Gunsight Pass 9820 7.6 8.5 89 9.8 9.2 107
Lewis Lake Divide 7850 16.9 20.4 83 20.7 23.7 87
Phillips Bench 8200 15.7 16.1 98 18.7 18.7 100
Salt River Summit 7640 8.0 8.2 98 10.1 10.9 93
Snake River Station 6920 10.8 11.4 95 15.4 15.9 97
Spring Creek Divide 9000 14.2 15.1 94 15.6 15.9 98
Thumb Divide 7980 8.6 9.6 90 10.5 12.4 85
Togwotee Pass 9580 14.8 15.3 97 15.6 16.2 96
Two Ocean Plateau 9240 16.9 18.3 92 14.2 17.7 80
Willow Creek 8080 16.2 17.8 91 20.5 22.2 92
Younts Peak 8350 -M 10.0 * -M 10.8 *
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Basin Index (%) 93 92
MADISON-GALLATIN
Black Bear 8170 21.5 23.7 91 22.6 25.5 89
Canyon 7870 7.6 8.4 90 9.2 11.0 84
Madison Plateau 7750 12.7 14.3 89 13.8 17.7 78
West Yellowstone 6700 7.2 7.1 101 8.9 9.9 90
Whiskey Creek 6800 8.4 9.7 87 9.1 13.6 67
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Basin Index (%) 91 82
YELLOWSTONE
Beartooth Lake 9360 10.7 14.3 75 9.6 13.2 73
Burnt Mtn 5880 5.1 2.6 196 9.2 8.1 114
Canyon 7870 7.6 8.4 90 9.2 11.0 84
Cole Creek 7850 11.6 8.6 135 9.7 7.8 124
Evening Star 9200 15.6 16.7 93 18.5 18.4 101
Fisher Creek 9100 16.4 21.3 77 20.3 21.3 95
Northeast Entrance 7350 6.4 6.6 97 8.9 8.5 105
Parker Peak 9400 14.2 13.4 106 14.9 11.7 127
Sylvan Lake 8420 12.9 13.4 96 18.1 15.2 119
Thumb Divide 7980 8.6 9.6 90 10.5 12.4 85
Two Ocean Plateau 9240 16.9 18.3 92 14.2 17.7 80
White Mill 8700 12.3 15.0 82 11.0 15.9 69
Wolverine 7650 6.8 7.2 94 7.7 8.4 92
Younts Peak 8350 -M 10.0 * -M 10.8 *
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Basin Index (%) 93 95
WIND RIVER
Burroughs Creek 8750 4.8 -M * 6.4 -M *
Castle Creek 8400 2.1 -M * 3.4 -M *
Cold Springs 9630 4.7 4.8 98 4.7 6.4 73
Deer Park 9700 10.1 9.5 106 10.7 12.6 85
Hobbs Park 10100 8.7 8.0 109 6.5 8.0 81
Kirwin 9550 5.7 6.0 95 5.9 7.4 80
Little Warm 9370 4.9 6.6 74 5.7 8.4 68
Owl Creek 8975 3.8 3.1 123 4.5 3.6 125
South Pass 9040 8.5 9.7 88 7.5 11.2 67
St. Lawrence Alt 8620 3.4 4.2 81 5.9 5.5 107
Togwotee Pass 9580 14.8 15.3 97 15.6 16.2 96
Townsend Creek 8700 6.4 5.4 119 7.0 7.3 96
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Basin Index (%) 98 85
BIGHORN BASIN
Bald Mtn. 9380 12.5 11.0 114 8.3 11.0 75
Bear Trap Meadow 8200 5.8 3.5 166 5.1 5.3 96
Bone Springs Div 9350 9.1 9.9 92 7.7 9.8 79
Grave Springs 8550 5.3 5.0 106 6.1 6.6 92
Kirwin 9550 5.7 6.0 95 5.9 7.4 80
Marquette 8760 5.8 -M * 7.0 -M *
Middle Powder 7760 6.8 6.5 105 4.2 7.6 55
Owl Creek 8975 3.8 3.1 123 4.5 3.6 125
Powder River Pass 9480 7.1 6.8 104 6.3 8.1 78
Shell Creek 9580 -M 9.3 * -M 9.1 *
Timber Creek 7950 2.9 3.1 94 4.6 4.6 100
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Basin Index (%) 107 82
SHOSHONE RIVER
Blackwater 9780 13.8 15.0 92 14.8 13.6 109
Evening Star 9200 15.6 16.7 93 18.5 18.4 101
Marquette 8760 5.8 -M * 7.0 -M *
Sylvan Lake 8420 12.9 13.4 96 18.1 15.2 119
Sylvan Road 7120 7.7 7.9 97 10.6 12.1 88
Younts Peak 8350 -M 10.0 * -M 10.8 *
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Basin Index (%) 94 105
POWDER RIVER
Bear Trap Meadow 8200 5.8 3.5 166 5.1 5.3 96
Cloud Peak Reservoir 9860 8.7 8.6 101 7.5 8.1 93
Grave Springs 8550 5.3 5.0 106 6.1 6.6 92
Hansen Sawmill 8360 3.8 4.0 95 5.3 5.2 102
Middle Powder 7760 6.8 6.5 105 4.2 7.6 55
Powder River Pass 9480 7.1 6.8 104 6.3 8.1 78
Soldier Park 8720 3.1 -M * 5.1 -M *
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Basin Index (%) 109 84
TONGUE RIVER
Big Goose 7990 5.4 5.0 108 7.2 6.7 107
Bone Springs Div 9350 9.1 9.9 92 7.7 9.8 79
Burgess Junction 7880 6.0 6.8 88 6.4 7.7 83
Dome Lake 8880 5.4 7.0 77 5.5 8.6 64
Little Goose 8870 6.5 -M * 5.8 -M *
Sucker Creek 8880 7.9 7.3 108 7.4 8.9 83
Tie Creek 6870 3.3 3.5 94 7.5 7.3 103
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Basin Index (%) 94 85
BELLE FOURCHE
Blind Park 6890 6.0 5.0 120 5.5 8.0 69
Cole Canyon 5910 4.9 3.4 144 8.3 5.8 143
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Basin Index (%) 130 100
CHEYENNE RIVER BASIN
Blind Park 6890 6.0 5.0 120 5.5 8.0 69
North Rapid Creek 6130 4.7 4.4 107 4.8 6.5 74
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Basin Index (%) 114 71
UPPER N. PLATTE
Arapaho Ridge 10960 14.9 13.5 110 16.0 14.6 110
Blackhall Mtn 9820 18.8 -M * 21.1 -M *
Columbine 9160 16.7 15.2 110 18.1 16.8 108
Divide Peak 8880 12.7 12.8 99 15.2 14.0 109
Joe Wright 10120 13.3 13.2 101 20.0 16.5 121
Laprele Creek 8375 8.3 5.6 148 9.1 7.7 118
Med Bow 10500 24.0 -M * 23.2 -M *
Never Summer 10280 13.3 12.9 103 12.4 -M *
North French Creek 10130 19.1 16.4 116 20.4 17.3 118
Old Battle 10000 21.2 19.8 107 23.1 23.1 100
Rawah 9020 6.9 6.5 106 10.0 9.3 108
Sage Creek Basin 7850 11.6 8.8 132 11.1 10.1 110
Sand Lake 10050 18.0 16.9 107 15.1 15.5 97
South Brush Creek 8440 7.2 7.5 96 8.3 9.8 85
Tower 10500 30.2 28.5 106 27.6 26.2 105
Webber Springs 9250 14.7 14.6 101 18.8 17.5 107
Whiskey Park 8950 16.8 16.8 100 20.6 18.4 112
Willow Creek Pass 9540 9.0 7.9 114 11.0 8.5 129
Zirkel 9340 17.8 19.1 93 22.3 19.7 113
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Basin Index (%) 107 109
SWEETWATER
Deer Park 9700 10.1 9.5 106 10.7 12.6 85
Larsen Creek 9000 6.5 7.6 86 9.6 -M *
South Pass 9040 8.5 9.7 88 7.5 11.2 67
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Basin Index (%) 94 76
LOWER N. PLATTE
Casper Mtn. 7900 9.6 7.8 123 8.1 9.3 87
Laprele Creek 8375 8.3 5.6 148 9.1 7.7 118
Reno Hill 8400 10.1 7.9 128 11.1 9.2 121
Windy Peak 7900 6.5 4.3 151 6.6 6.5 102
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Basin Index (%) 135 107
LARAMIE RIVER
Brooklyn Lake 10240 14.2 12.1 117 15.9 13.3 120
Cinnabar Park 9574 13.1 13.6 96 15.7 16.6 95
Crow Creek 8330 2.8 5.7 49 6.2 6.5 95
Deadman Hill 10220 11.5 10.4 111 10.9 10.5 104
Rawah 9020 6.9 6.5 106 10.0 9.3 108
Roach 9700 9.4 10.3 91 11.8 12.1 98
Windy Peak 7900 6.5 4.3 151 6.6 6.5 102
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Basin Index (%) 102 103
S. PLATTE
Black Mountain 8920 6.1 -M * 7.2 -M *
Crow Creek 8330 2.8 5.7 49 6.2 6.5 95
Deadman Hill 10220 11.5 10.4 111 10.9 10.5 104
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Basin Index (%) 89 101
LITTLE SNAKE RIVER
Battle Mountain 7440 8.3 7.3 114 10.6 9.9 107
Divide Peak 8880 12.7 12.8 99 15.2 14.0 109
Elk River 8700 12.1 11.9 102 11.7 13.2 89
Little Snake River 8915 15.5 16.1 96 24.4 21.4 114
Old Battle 10000 21.2 19.8 107 23.1 23.1 100
Sage Creek Basin 7850 11.6 8.8 132 11.1 10.1 110
Sandstone RS 8150 10.2 8.3 123 11.7 12.3 95
Whiskey Park 8950 16.8 16.8 100 20.6 18.4 112
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Basin Index (%) 106 105
UPPER GREEN RIVER
Big Sandy Opening 9080 8.2 8.5 96 9.1 8.6 106
Blind Bull Sum 8650 12.5 14.5 86 10.5 13.2 80
East Rim Divide 7930 6.4 6.9 93 6.8 7.9 86
Elkhart Park G.S. 9400 7.3 7.7 95 8.3 8.7 95
Gros Ventre Summit 8750 5.5 8.6 64 6.5 8.4 77
Gunsight Pass 9820 7.6 8.5 89 9.8 9.2 107
Kendall R.S. 7740 6.8 7.8 87 7.5 9.5 79
Loomis Park 8240 9.0 9.8 92 10.3 11.6 89
New Fork Lake 8340 6.1 6.8 90 5.8 7.3 79
Pocket Creek 9360 9.1 -M * 10.0 -M *
Snyder Basin 8060 7.6 7.9 96 9.4 9.5 99
Spring Creek Divide 9000 14.2 15.1 94 15.6 15.9 98
Triple Peak 8500 14.0 13.5 104 16.1 16.5 98
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Basin Index (%) 91 92
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.8 -M * 8.3 -M *
Buck Pasture 9632 10.2 -M * 12.8 -M *
EF Blacks Fork GS 9360 7.5 -M * 7.2 -M *
Hams Fork 7840 6.8 7.4 92 7.4 7.5 99
Hewinta 9500 6.4 6.1 105 9.4 8.9 106
Hickerson Park 9122 5.0 3.9 128 7.5 6.3 119
Hole-in-Rock 9168 3.9 4.1 95 6.9 5.9 117
Indian Creek 9425 13.1 14.8 89 10.9 14.5 75
Kelley R.S. 8180 8.9 9.3 96 9.7 11.9 82
Spirit Lk 10235 9.7 -M * -M -M *
Steel Creek Park 10158 9.8 9.0 109 11.9 10.3 116
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Basin Index (%) 99 98
UPPER BEAR RIVER
Bear River RS 8777 6.5 -M * 9.6 -M *
Bug Lake 7987 11.9 11.6 103 14.5 12.8 113
Burts Miller Ranch 8000 3.8 -M * 5.6 -M *
Chalk Creek #1 9171 14.0 13.5 104 18.2 16.1 113
Hayden Fork 9130 10.4 8.9 117 15.3 13.5 113
Kelley R.S. 8180 8.9 9.3 96 9.7 11.9 82
Lily Lake 9133 8.0 7.6 105 10.6 11.0 96
Monte Cristo 8932 17.8 16.2 110 18.2 16.8 108
Salt River Summit 7640 8.0 8.2 98 10.1 10.9 93
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Basin Index (%) 105 104
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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.