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 1 , 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 9.0 10.8 83 11.0 14.1 78
Black Bear 8170 18.2 23.3 78 19.7 25.1 78
Blind Bull Sum 8650 10.9 13.8 79 9.2 12.9 71
Cottonwood Creek 7670 11.8 12.9 91 14.4 15.9 91
East Rim Divide 7930 5.3 6.8 78 5.8 7.7 75
Grand Targhee 9260 26.4 23.6 112 20.8 20.7 100
Granite Creek 6770 8.7 10.6 82 10.7 13.7 78
Grassy Lake 7265 15.4 20.3 76 19.2 24.1 80
Gros Ventre Summit 8750 4.6 8.4 55 5.7 8.3 69
Gunsight Pass 9820 6.7 8.3 81 9.0 8.9 101
Lewis Lake Divide 7850 14.2 20.0 71 18.3 23.3 79
Phillips Bench 8200 12.0 16.0 75 15.5 18.3 85
Salt River Summit 7640 6.4 7.8 82 8.7 10.7 81
Snake River Station 6920 9.4 10.9 86 14.0 15.6 90
Spring Creek Divide 9000 12.4 14.4 86 14.0 15.4 91
Thumb Divide 7980 6.7 9.6 70 8.8 12.2 72
Togwotee Pass 9580 13.4 15.0 89 14.3 15.9 90
Two Ocean Plateau 9240 15.5 17.6 88 13.3 17.4 76
Willow Creek 8080 14.6 17.1 85 19.0 21.7 88
Younts Peak 8350 -M 9.6 * -M 10.5 *
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Basin Index (%) 83 83
MADISON-GALLATIN
Black Bear 8170 18.2 23.3 78 19.7 25.1 78
Canyon 7870 6.7 8.2 82 8.5 10.8 79
Madison Plateau 7750 10.4 14.1 74 11.8 17.4 68
West Yellowstone 6700 6.0 7.0 86 7.6 9.7 78
Whiskey Creek 6800 6.9 9.6 72 7.9 13.3 59
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Basin Index (%) 77 73
YELLOWSTONE
Beartooth Lake 9360 9.9 13.9 71 9.0 12.9 70
Burnt Mtn 5880 5.4 2.4 225 9.3 7.8 119
Canyon 7870 6.7 8.2 82 8.5 10.8 79
Cole Creek 7850 11.6 8.4 138 8.8 7.6 116
Evening Star 9200 14.8 16.4 90 17.8 18.0 99
Fisher Creek 9100 14.6 20.6 71 18.8 20.9 90
Northeast Entrance 7350 5.9 6.4 92 8.4 8.3 101
Parker Peak 9400 13.6 13.0 105 14.4 11.4 126
Sylvan Lake 8420 12.2 13.0 94 17.3 15.0 115
Thumb Divide 7980 6.7 9.6 70 8.8 12.2 72
Two Ocean Plateau 9240 15.5 17.6 88 13.3 17.4 76
White Mill 8700 11.2 14.6 77 10.0 15.5 65
Wolverine 7650 6.7 7.1 94 7.7 8.2 94
Younts Peak 8350 -M 9.6 * -M 10.5 *
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Basin Index (%) 89 92
WIND RIVER
Burroughs Creek 8750 4.4 -M * 6.3 -M *
Castle Creek 8400 2.0 -M * 3.2 -M *
Cold Springs 9630 4.0 4.5 89 4.3 6.2 69
Deer Park 9700 8.1 9.4 86 8.5 12.3 69
Hobbs Park 10100 7.1 8.0 89 5.9 7.8 76
Kirwin 9550 5.0 5.9 85 5.3 7.2 74
Little Warm 9370 4.5 6.4 70 5.4 8.2 66
Owl Creek 8975 3.8 3.1 123 4.5 3.6 125
South Pass 9040 6.9 8.9 78 6.6 11.0 60
St. Lawrence Alt 8620 2.6 4.2 62 5.0 5.3 94
Togwotee Pass 9580 13.4 15.0 89 14.3 15.9 90
Townsend Creek 8700 5.4 5.2 104 6.3 7.1 89
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Basin Index (%) 86 78
BIGHORN BASIN
Bald Mtn. 9380 11.7 10.8 108 7.8 10.7 73
Bear Trap Meadow 8200 5.6 3.4 165 5.0 5.2 96
Bone Springs Div 9350 8.4 9.8 86 7.2 9.6 75
Grave Springs 8550 5.1 4.9 104 6.6 6.4 103
Kirwin 9550 5.0 5.9 85 5.3 7.2 74
Marquette 8760 5.8 -M * 7.0 -M *
Middle Powder 7760 6.8 6.3 108 4.2 7.4 57
Owl Creek 8975 3.8 3.1 123 4.5 3.6 125
Powder River Pass 9480 6.3 6.5 97 6.0 7.9 76
Shell Creek 9580 -M 9.1 * -M 9.0 *
Timber Creek 7950 2.9 2.9 100 4.6 4.5 102
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Basin Index (%) 104 82
SHOSHONE RIVER
Blackwater 9780 13.3 14.8 90 14.3 13.3 108
Evening Star 9200 14.8 16.4 90 17.8 18.0 99
Marquette 8760 5.8 -M * 7.0 -M *
Sylvan Lake 8420 12.2 13.0 94 17.3 15.0 115
Sylvan Road 7120 7.1 7.8 91 10.4 11.9 87
Younts Peak 8350 -M 9.6 * -M 10.5 *
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Basin Index (%) 91 103
POWDER RIVER
Bear Trap Meadow 8200 5.6 3.4 165 5.0 5.2 96
Cloud Peak Reservoir 9860 8.3 8.3 100 7.7 7.9 97
Grave Springs 8550 5.1 4.9 104 6.6 6.4 103
Hansen Sawmill 8360 3.7 4.0 92 5.2 5.1 102
Middle Powder 7760 6.8 6.3 108 4.2 7.4 57
Powder River Pass 9480 6.3 6.5 97 6.0 7.9 76
Soldier Park 8720 3.1 -M * 5.2 -M *
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Basin Index (%) 107 87
TONGUE RIVER
Big Goose 7990 5.5 4.9 112 7.3 6.5 112
Bone Springs Div 9350 8.4 9.8 86 7.2 9.6 75
Burgess Junction 7880 6.0 6.6 91 6.5 7.5 87
Dome Lake 8880 5.3 6.8 78 5.6 8.4 67
Little Goose 8870 6.6 -M * 5.8 -M *
Sucker Creek 8880 7.8 7.1 110 7.5 8.7 86
Tie Creek 6870 3.4 3.4 100 7.6 7.1 107
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Basin Index (%) 94 87
BELLE FOURCHE
Blind Park 6890 5.4 4.6 117 5.1 7.7 66
Cole Canyon 5910 5.0 3.2 156 8.2 5.6 146
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Basin Index (%) 133 100
CHEYENNE RIVER BASIN
Blind Park 6890 5.4 4.6 117 5.1 7.7 66
North Rapid Creek 6130 4.8 4.3 112 4.9 6.2 79
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Basin Index (%) 115 72
UPPER N. PLATTE
Arapaho Ridge 10960 14.5 13.2 110 15.5 14.1 110
Blackhall Mtn 9820 18.0 -M * 20.3 -M *
Columbine 9160 16.3 14.7 111 17.4 16.4 106
Divide Peak 8880 12.2 12.3 99 15.0 13.6 110
Joe Wright 10120 13.0 13.0 100 19.7 16.0 123
Laprele Creek 8375 8.1 5.4 150 8.9 7.5 119
Med Bow 10500 23.4 -M * 22.7 -M *
Never Summer 10280 12.8 12.6 102 12.1 -M *
North French Creek 10130 18.6 16.0 116 20.2 16.8 120
Old Battle 10000 20.4 19.1 107 22.2 22.4 99
Rawah 9020 6.8 6.2 110 9.7 9.0 108
Sage Creek Basin 7850 11.3 8.4 135 10.9 9.8 111
Sand Lake 10050 17.4 16.5 105 14.9 15.1 99
South Brush Creek 8440 7.1 7.3 97 8.1 9.5 85
Tower 10500 29.6 27.5 108 27.2 25.5 107
Webber Springs 9250 14.0 13.7 102 18.1 17.0 106
Whiskey Park 8950 16.2 16.0 101 20.0 17.9 112
Willow Creek Pass 9540 8.7 7.6 114 10.6 8.3 128
Zirkel 9340 16.5 18.5 89 21.2 19.0 112
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Basin Index (%) 107 109
SWEETWATER
Deer Park 9700 8.1 9.4 86 8.5 12.3 69
Larsen Creek 9000 5.1 7.3 70 8.2 -M *
South Pass 9040 6.9 8.9 78 6.6 11.0 60
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Basin Index (%) 79 65
LOWER N. PLATTE
Casper Mtn. 7900 9.5 7.5 127 8.0 9.0 89
Laprele Creek 8375 8.1 5.4 150 8.9 7.5 119
Reno Hill 8400 10.0 7.7 130 10.9 8.9 122
Windy Peak 7900 6.4 4.2 152 6.3 6.4 98
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Basin Index (%) 137 107
LARAMIE RIVER
Brooklyn Lake 10240 13.7 12.0 114 15.7 12.9 122
Cinnabar Park 9574 12.7 13.2 96 15.3 15.8 97
Crow Creek 8330 2.8 5.7 49 6.2 6.4 97
Deadman Hill 10220 11.1 10.1 110 10.6 10.2 104
Rawah 9020 6.8 6.2 110 9.7 9.0 108
Roach 9700 9.0 10.0 90 11.4 11.8 97
Windy Peak 7900 6.4 4.2 152 6.3 6.4 98
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Basin Index (%) 102 104
S. PLATTE
Black Mountain 8920 5.9 -M * 7.0 -M *
Crow Creek 8330 2.8 5.7 49 6.2 6.4 97
Deadman Hill 10220 11.1 10.1 110 10.6 10.2 104
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Basin Index (%) 88 101
LITTLE SNAKE RIVER
Battle Mountain 7440 8.3 7.1 117 -M 9.6 *
Divide Peak 8880 12.2 12.3 99 15.0 13.6 110
Elk River 8700 11.3 11.2 101 11.5 12.8 90
Little Snake River 8915 14.9 15.5 96 23.9 20.6 116
Old Battle 10000 20.4 19.1 107 22.2 22.4 99
Sage Creek Basin 7850 11.3 8.4 135 10.9 9.8 111
Sandstone RS 8150 10.1 8.0 126 11.6 12.0 97
Whiskey Park 8950 16.2 16.0 101 20.0 17.9 112
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Basin Index (%) 107 105
UPPER GREEN RIVER
Big Sandy Opening 9080 6.7 8.2 82 7.7 8.4 92
Blind Bull Sum 8650 10.9 13.8 79 9.2 12.9 71
East Rim Divide 7930 5.3 6.8 78 5.8 7.7 75
Elkhart Park G.S. 9400 6.5 7.5 87 7.4 8.5 87
Gros Ventre Summit 8750 4.6 8.4 55 5.7 8.3 69
Gunsight Pass 9820 6.7 8.3 81 9.0 8.9 101
Kendall R.S. 7740 5.8 7.8 74 6.6 9.3 71
Loomis Park 8240 7.7 9.5 81 9.0 11.3 80
New Fork Lake 8340 5.0 6.8 74 5.2 7.1 73
Pocket Creek 9360 8.3 -M * 9.3 -M *
Snyder Basin 8060 6.6 7.5 88 8.6 9.2 93
Spring Creek Divide 9000 12.4 14.4 86 14.0 15.4 91
Triple Peak 8500 12.0 13.3 90 14.3 16.1 89
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Basin Index (%) 80 83
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.2 -M * 8.0 -M *
Buck Pasture 9632 8.9 -M * 12.0 -M *
EF Blacks Fork GS 9360 6.7 -M * 6.9 -M *
Hams Fork 7840 5.8 7.1 82 7.0 7.3 96
Hewinta 9500 5.8 5.7 102 8.9 8.6 103
Hickerson Park 9122 4.6 3.8 121 6.9 6.1 113
Hole-in-Rock 9168 3.5 4.0 88 6.5 5.7 114
Indian Creek 9425 11.5 14.6 79 9.8 14.0 70
Kelley R.S. 8180 7.8 9.0 87 8.8 11.6 76
Spirit Lk 10235 8.3 -M * 7.6 -M *
Steel Creek Park 10158 9.1 8.7 105 11.2 9.9 113
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Basin Index (%) 91 94
UPPER BEAR RIVER
Bear River RS 8777 5.5 -M * 8.7 -M *
Bug Lake 7987 9.9 10.7 93 13.1 12.4 106
Burts Miller Ranch 8000 3.4 -M * 5.2 -M *
Chalk Creek #1 9171 11.8 13.4 88 16.5 15.7 105
Hayden Fork 9130 8.8 8.6 102 13.7 13.1 105
Kelley R.S. 8180 7.8 9.0 87 8.8 11.6 76
Lily Lake 9133 7.3 7.4 99 9.8 10.7 92
Monte Cristo 8932 14.1 16.0 88 15.6 16.3 96
Salt River Summit 7640 6.4 7.8 82 8.7 10.7 81
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Basin Index (%) 91 95
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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.