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 WEDNESDAY: FEBRUARY 5 , 2020
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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 10.9 11.0 99 11.3 14.4 78
Black Bear 8170 22.8 23.7 96 21.7 25.5 85
Blind Bull Sum 8650 16.2 14.5 112 10.2 13.2 77
Cottonwood Creek 7670 16.7 13.6 123 17.6 16.3 108
East Rim Divide 7930 7.8 6.9 113 6.5 7.9 82
Grand Targhee 9260 27.5 24.1 114 18.8 21.3 88
Granite Creek 6770 10.9 11.0 99 10.6 14.0 76
Grassy Lake 7265 21.1 21.0 100 21.4 24.6 87
Gros Ventre Summit 8750 6.7 8.6 78 6.6 8.4 79
Gunsight Pass 9820 8.1 8.5 95 8.2 9.2 89
Lewis Lake Divide 7850 17.2 20.4 84 20.3 23.7 86
Phillips Bench 8200 17.8 16.1 111 17.3 18.7 93
Salt River Summit 7640 9.3 8.2 113 9.8 10.9 90
Snake River Station 6920 11.5 11.4 101 13.4 15.9 84
Spring Creek Divide 9000 15.4 15.1 102 14.9 15.9 94
Thumb Divide 7980 9.5 9.6 99 9.7 12.4 78
Togwotee Pass 9580 16.5 15.3 108 15.5 16.2 96
Two Ocean Plateau 9240 18.4 18.3 101 14.6 17.7 82
Willow Creek 8080 20.8 17.8 117 21.4 22.2 96
Younts Peak 8350 10.6 10.0 106 8.8 10.8 81
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Basin Index (%) 104 87
MADISON-GALLATIN
Black Bear 8170 22.8 23.7 96 21.7 25.5 85
Canyon 7870 8.8 8.4 105 9.1 11.0 83
Madison Plateau 7750 14.4 14.3 101 12.8 17.7 72
West Yellowstone 6700 7.6 7.1 107 6.3 9.9 64
Whiskey Creek 6800 -M 9.7 * -M 13.6 *
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Basin Index (%) 100 78
YELLOWSTONE
Beartooth Lake 9360 14.7 14.3 103 13.3 13.2 101
Burnt Mtn 5880 3.4 2.6 131 7.8 8.1 96
Canyon 7870 8.8 8.4 105 9.1 11.0 83
Cole Creek 7850 10.1 8.6 117 8.0 7.8 103
Evening Star 9200 18.1 16.7 108 19.8 18.4 108
Fisher Creek 9100 20.3 21.3 95 20.8 21.3 98
Northeast Entrance 7350 7.1 6.6 108 8.1 8.5 95
Parker Peak 9400 16.3 13.4 122 14.9 11.7 127
Sylvan Lake 8420 13.5 13.4 101 14.9 15.2 98
Thumb Divide 7980 9.5 9.6 99 9.7 12.4 78
Two Ocean Plateau 9240 18.4 18.3 101 14.6 17.7 82
White Mill 8700 16.7 15.0 111 13.6 15.9 86
Wolverine 7650 9.1 7.2 126 8.9 8.4 106
Younts Peak 8350 10.6 10.0 106 8.8 10.8 81
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Basin Index (%) 107 96
WIND RIVER
Burroughs Creek 8750 7.6 -M * 8.9 -M *
Castle Creek 8400 3.4 -M * 4.1 -M *
Cold Springs 9630 5.1 4.8 106 4.9 6.4 77
Deer Park 9700 8.4 9.5 88 7.2 12.6 57
Hobbs Park 10100 8.3 8.0 104 7.2 8.0 90
Kirwin 9550 7.5 6.0 125 6.1 7.4 82
Little Warm 9370 7.2 6.6 109 5.9 8.4 70
Owl Creek 8975 3.8 3.1 123 4.2 3.6 117
South Pass 9040 7.4 9.7 76 6.6 11.2 59
St. Lawrence Alt 8620 3.7 4.2 88 4.8 5.5 87
Togwotee Pass 9580 16.5 15.3 108 15.5 16.2 96
Townsend Creek 8700 5.9 5.4 109 6.0 7.3 82
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Basin Index (%) 102 79
BIGHORN BASIN
Bald Mtn. 9380 13.7 11.0 125 9.9 11.0 90
Bear Trap Meadow 8200 5.9 3.5 169 6.5 5.3 123
Bone Springs Div 9350 11.5 9.9 116 9.5 9.8 97
Grave Springs 8550 7.0 5.0 140 7.3 6.6 111
Kirwin 9550 7.5 6.0 125 6.1 7.4 82
Marquette 8760 4.6 -M * 5.9 -M *
Middle Powder 7760 7.7 6.5 118 8.3 7.6 109
Owl Creek 8975 3.8 3.1 123 4.2 3.6 117
Powder River Pass 9480 8.6 6.8 126 8.2 8.1 101
Shell Creek 9580 10.1 9.3 109 9.8 9.1 108
Timber Creek 7950 4.2 3.1 135 4.7 4.6 102
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Basin Index (%) 125 102
SHOSHONE RIVER
Blackwater 9780 14.2 15.0 95 14.2 13.6 104
Evening Star 9200 18.1 16.7 108 19.8 18.4 108
Marquette 8760 4.6 -M * 5.9 -M *
Sylvan Lake 8420 13.5 13.4 101 14.9 15.2 98
Sylvan Road 7120 8.1 7.9 103 11.6 12.1 96
Younts Peak 8350 10.6 10.0 106 8.8 10.8 81
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Basin Index (%) 102 99
POWDER RIVER
Bear Trap Meadow 8200 5.9 3.5 169 6.5 5.3 123
Cloud Peak Reservoir 9860 8.6 8.6 100 7.9 8.1 98
Grave Springs 8550 7.0 5.0 140 7.3 6.6 111
Hansen Sawmill 8360 4.8 4.0 120 5.9 5.2 113
Middle Powder 7760 7.7 6.5 118 8.3 7.6 109
Powder River Pass 9480 8.6 6.8 126 8.2 8.1 101
Soldier Park 8720 2.9 -M * 5.7 -M *
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Basin Index (%) 124 108
TONGUE RIVER
Big Goose 7990 5.2 5.0 104 7.2 6.7 107
Bone Springs Div 9350 11.5 9.9 116 9.5 9.8 97
Burgess Junction 7880 6.5 6.8 96 7.5 7.7 97
Dome Lake 8880 7.6 7.0 109 6.1 8.6 71
Little Goose 8870 6.4 -M * 5.3 -M *
Sucker Creek 8880 8.4 7.3 115 6.9 8.9 78
Tie Creek 6870 4.6 3.5 131 7.9 7.3 108
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Basin Index (%) 111 92
BELLE FOURCHE
Blind Park 6890 5.4 5.0 108 6.5 8.0 81
Cole Canyon 5910 2.6 3.4 76 -M 5.8 *
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Basin Index (%) 95 81
CHEYENNE RIVER BASIN
Blind Park 6890 5.4 5.0 108 6.5 8.0 81
North Rapid Creek 6130 4.8 4.4 109 6.8 6.5 105
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Basin Index (%) 109 92
UPPER N. PLATTE
Arapaho Ridge 10960 13.8 13.5 102 13.2 14.6 90
Blackhall Mtn 9820 19.0 -M * 18.7 -M *
Columbine 9160 17.9 15.2 118 -M 16.8 *
Divide Peak 8880 14.4 12.8 112 15.4 14.0 110
Joe Wright 10120 11.1 13.2 84 15.8 16.5 96
Laprele Creek 8375 8.1 5.6 145 8.3 7.7 108
Med Bow 10500 28.5 -M * 23.8 -M *
Never Summer 10280 12.0 12.9 93 8.3 -M *
North French Creek 10130 21.6 16.4 132 21.1 17.3 122
Old Battle 10000 21.0 19.8 106 19.1 23.1 83
Rawah 9020 7.9 6.5 122 9.3 9.3 100
Sage Creek Basin 7850 11.3 8.8 128 9.1 10.1 90
Sand Lake 10050 -M 16.9 * -M 15.5 *
South Brush Creek 8440 8.4 7.5 112 8.5 9.8 87
Tower 10500 28.1 28.5 99 25.1 26.2 96
Webber Springs 9250 14.4 14.6 99 15.7 17.5 90
Whiskey Park 8950 21.6 16.8 129 21.4 18.4 116
Willow Creek Pass 9540 7.7 7.9 97 6.9 8.5 81
Zirkel 9340 18.1 19.1 95 -M 19.7 *
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Basin Index (%) 108 98
SWEETWATER
Deer Park 9700 8.4 9.5 88 7.2 12.6 57
Larsen Creek 9000 -M 7.6 * 5.0 -M *
South Pass 9040 7.4 9.7 76 6.6 11.2 59
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Basin Index (%) 82 58
LOWER N. PLATTE
Casper Mtn. 7900 11.3 7.8 145 7.4 9.3 80
Laprele Creek 8375 8.1 5.6 145 8.3 7.7 108
Reno Hill 8400 10.4 7.9 132 10.1 9.2 110
Windy Peak 7900 6.3 4.3 147 5.3 6.5 82
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Basin Index (%) 141 95
LARAMIE RIVER
Brooklyn Lake 10240 17.3 12.1 143 16.9 13.3 127
Cinnabar Park 9574 15.6 13.6 115 17.1 16.6 103
Crow Creek 8330 5.6 5.7 98 7.3 6.5 112
Deadman Hill 10220 12.0 10.4 115 10.1 10.5 96
Rawah 9020 7.9 6.5 122 9.3 9.3 100
Roach 9700 9.4 10.3 91 9.0 12.1 74
Windy Peak 7900 6.3 4.3 147 5.3 6.5 82
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Basin Index (%) 118 100
S. PLATTE
Black Mountain 8920 6.6 -M * 8.4 -M *
Crow Creek 8330 5.6 5.7 98 7.3 6.5 112
Deadman Hill 10220 12.0 10.4 115 10.1 10.5 96
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Basin Index (%) 109 102
LITTLE SNAKE RIVER
Battle Mountain 7440 10.0 7.3 137 10.0 9.9 101
Divide Peak 8880 14.4 12.8 112 15.4 14.0 110
Elk River 8700 13.6 11.9 114 11.1 13.2 84
Little Snake River 8915 18.4 16.1 114 22.6 21.4 106
Old Battle 10000 21.0 19.8 106 19.1 23.1 83
Sage Creek Basin 7850 11.3 8.8 128 9.1 10.1 90
Sandstone RS 8150 11.5 8.3 139 10.8 12.3 88
Whiskey Park 8950 21.6 16.8 129 21.4 18.4 116
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Basin Index (%) 120 98
UPPER GREEN RIVER
Big Sandy Opening 9080 6.3 8.5 74 5.4 8.6 63
Blind Bull Sum 8650 16.2 14.5 112 10.2 13.2 77
East Rim Divide 7930 7.8 6.9 113 6.5 7.9 82
Elkhart Park G.S. 9400 6.8 7.7 88 6.8 8.7 78
Gros Ventre Summit 8750 6.7 8.6 78 6.6 8.4 79
Gunsight Pass 9820 8.1 8.5 95 8.2 9.2 89
Indian Creek 9425 14.3 14.8 97 10.7 14.5 74
Kendall R.S. 7740 7.0 7.8 90 7.0 9.5 74
Loomis Park 8240 9.4 9.8 96 11.9 11.6 103
New Fork Lake 8340 7.3 6.8 107 -M 7.3 *
Pocket Creek 9360 -M -M * 5.2 -M *
Snider Basin 8060 8.3 7.9 105 8.8 9.5 93
Spring Creek Divide 9000 15.4 15.1 102 14.9 15.9 94
Triple Peak 8500 16.2 13.5 120 15.8 16.5 96
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Basin Index (%) 100 84
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.2 -M * 8.5 -M *
Buck Pasture 9632 12.0 -M * 12.2 -M *
EF Blacks Fork GS 9360 10.1 -M * -M -M *
Hams Fork 7840 7.6 7.4 103 7.5 7.5 100
Hewinta 9500 7.8 6.1 128 10.1 8.9 113
Hickerson Park 9122 7.8 3.9 200 8.4 6.3 133
Hole-in-Rock 9168 7.6 4.1 185 7.7 5.9 131
Indian Creek 9425 14.3 14.8 97 10.7 14.5 74
Kelley R.S. 8180 10.2 9.3 110 10.7 11.9 90
Spirit Lk 10235 12.1 -M * 12.8 -M *
Steel Creek Park 10158 11.6 9.0 129 12.5 10.3 121
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Basin Index (%) 123 104
UPPER BEAR RIVER
Bear River RS 8777 6.4 -M * 7.6 -M *
Bug Lake 7987 13.7 11.6 118 12.7 12.8 99
Burts Miller Ranch 8000 5.3 -M * 5.0 -M *
Chalk Creek #1 9171 13.3 13.5 99 12.6 16.1 78
Hayden Fork 9130 11.0 8.9 124 14.0 13.5 104
Kelley R.S. 8180 10.2 9.3 110 10.7 11.9 90
Lily Lake 9133 7.2 7.6 95 8.7 11.0 79
Monte Cristo 8932 18.9 16.2 117 17.1 16.8 102
Salt River Summit 7640 9.3 8.2 113 9.8 10.9 90
Spring Creek Divide 9000 15.4 15.1 102 14.9 15.9 94
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Basin Index (%) 110 92
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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.