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 13 , 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 8.3 9.1 91 8.7 11.8 74
Black Bear 8170 16.0 20.2 79 15.8 20.9 76
Blind Bull Sum 8650 12.1 11.8 103 7.5 10.9 69
Cottonwood Creek 7670 12.9 9.8 132 13.2 13.5 98
East Rim Divide 7930 5.8 5.3 109 4.8 6.5 74
Grand Targhee 9260 22.9 20.9 110 14.4 17.8 81
Granite Creek 6770 7.8 8.0 98 8.0 11.4 70
Grassy Lake 7265 15.2 15.9 96 22.3 20.0 112
Gros Ventre Summit 8750 5.3 7.3 73 5.2 7.0 74
Gunsight Pass 9820 6.5 7.2 90 6.7 7.6 88
Lewis Lake Divide 7850 12.4 15.9 78 15.1 19.6 77
Phillips Bench 8200 14.0 13.9 101 14.0 15.4 91
Salt River Summit 7640 6.6 5.9 112 7.2 9.0 80
Snake River Station 6920 8.9 8.5 105 10.8 13.0 83
Spring Creek Divide 9000 11.6 11.4 102 11.4 13.1 87
Thumb Divide 7980 6.6 7.7 86 7.3 10.4 70
Togwotee Pass 9580 13.6 12.7 107 12.9 13.6 95
Two Ocean Plateau 9240 14.3 15.2 94 11.3 14.8 76
Willow Creek 8080 14.3 13.4 107 16.1 18.3 88
Younts Peak 8350 8.7 8.0 109 5.1 9.0 57
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Basin Index (%) 98 83
MADISON-GALLATIN
Black Bear 8170 16.0 20.2 79 15.8 20.9 76
Canyon 7870 6.8 6.9 99 7.0 9.1 77
Madison Plateau 7750 10.5 11.6 91 9.5 14.7 65
West Yellowstone 6700 5.5 6.0 92 4.2 8.2 51
Whiskey Creek 6800 7.5 8.1 93 8.8 11.4 77
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Basin Index (%) 88 70
YELLOWSTONE
Beartooth Lake 9360 12.2 11.9 103 11.2 10.8 104
Burnt Mtn 5880 1.8 2.0 90 6.3 7.2 88
Canyon 7870 6.8 6.9 99 7.0 9.1 77
Cole Creek 7850 7.1 6.9 103 6.1 6.9 88
Evening Star 9200 14.8 13.6 109 16.1 15.4 105
Fisher Creek 9100 16.7 17.5 95 17.2 17.6 98
Northeast Entrance 7350 5.8 5.1 114 6.9 7.1 97
Parker Peak 9400 13.0 11.3 115 12.1 9.8 123
Sylvan Lake 8420 10.7 11.0 97 12.1 12.8 95
Thumb Divide 7980 6.6 7.7 86 7.3 10.4 70
Two Ocean Plateau 9240 14.3 15.2 94 11.3 14.8 76
White Mill 8700 14.0 12.1 116 10.9 13.1 83
Wolverine 7650 7.8 5.7 137 7.7 7.1 108
Younts Peak 8350 8.7 8.0 109 5.1 9.0 57
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Basin Index (%) 104 91
WIND RIVER
Burroughs Creek 8750 6.2 -M * 7.2 -M *
Castle Creek 8400 3.0 -M * 3.6 -M *
Cold Springs 9630 3.8 3.8 100 3.6 5.5 65
Deer Park 9700 6.2 7.1 87 5.1 10.7 48
Hobbs Park 10100 6.0 7.2 83 5.2 6.8 76
Kirwin 9550 6.6 5.1 129 5.3 6.4 83
Little Warm 9370 6.4 5.4 119 4.0 7.0 57
Owl Creek 8975 2.8 2.9 97 3.4 3.2 106
South Pass 9040 5.2 7.4 70 3.9 9.5 41
St. Lawrence Alt 8620 2.7 3.4 79 3.6 4.7 77
Togwotee Pass 9580 13.6 12.7 107 12.9 13.6 95
Townsend Creek 8700 4.5 4.3 105 4.5 6.3 71
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Basin Index (%) 97 70
BIGHORN BASIN
Bald Mtn. 9380 11.6 9.7 120 8.0 9.2 87
Bear Trap Meadow 8200 5.1 2.8 182 5.8 4.6 126
Bone Springs Div 9350 9.7 8.3 117 7.0 8.2 85
Grave Springs 8550 5.6 4.2 133 6.1 5.7 107
Kirwin 9550 6.6 5.1 129 5.3 6.4 83
Marquette 8760 3.9 -M * 4.7 -M *
Middle Powder 7760 6.4 5.8 110 7.3 6.6 111
Owl Creek 8975 2.8 2.9 97 3.4 3.2 106
Powder River Pass 9480 7.3 5.7 128 7.3 6.8 107
Shell Creek 9580 -M 7.9 * -M 7.5 *
Timber Creek 7950 3.6 2.4 150 4.1 4.1 100
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Basin Index (%) 125 99
SHOSHONE RIVER
Blackwater 9780 12.2 12.5 98 11.6 11.4 102
Evening Star 9200 14.8 13.6 109 16.1 15.4 105
Marquette 8760 3.9 -M * 4.7 -M *
Sylvan Lake 8420 10.7 11.0 97 12.1 12.8 95
Sylvan Road 7120 6.6 6.3 105 10.1 10.4 97
Younts Peak 8350 8.7 8.0 109 5.1 9.0 57
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Basin Index (%) 103 93
POWDER RIVER
Bear Trap Meadow 8200 5.1 2.8 182 5.8 4.6 126
Cloud Peak Reservoir 9860 6.7 7.0 96 6.6 7.0 94
Grave Springs 8550 5.6 4.2 133 6.1 5.7 107
Hansen Sawmill 8360 3.6 3.4 106 4.6 4.4 105
Middle Powder 7760 6.4 5.8 110 7.3 6.6 111
Powder River Pass 9480 7.3 5.7 128 7.3 6.8 107
Soldier Park 8720 2.3 -M * 4.6 -M *
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Basin Index (%) 120 107
TONGUE RIVER
Big Goose 7990 4.1 4.2 98 5.4 5.7 95
Bone Springs Div 9350 9.7 8.3 117 7.0 8.2 85
Burgess Junction 7880 5.4 5.4 100 -M 6.5 *
Dome Lake 8880 5.2 5.9 88 -M 7.4 *
Little Goose 8870 4.9 -M * 4.3 -M *
Sucker Creek 8880 6.8 6.1 111 5.4 7.5 72
Tie Creek 6870 3.4 2.4 142 6.6 6.2 106
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Basin Index (%) 107 88
BELLE FOURCHE
Blind Park 6890 4.0 3.9 103 5.2 6.8 76
Cole Canyon 5910 3.0 2.5 120 -M 5.1 *
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Basin Index (%) 109 76
CHEYENNE RIVER BASIN
Blind Park 6890 4.0 3.9 103 5.2 6.8 76
North Rapid Creek 6130 3.7 3.6 103 5.3 5.6 95
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Basin Index (%) 103 85
UPPER N. PLATTE
Arapaho Ridge 10960 12.2 10.9 112 11.8 12.7 93
Blackhall Mtn 9820 15.9 -M * 16.2 -M *
Columbine 9160 14.4 11.9 121 13.7 13.7 100
Divide Peak 8880 11.6 10.0 116 12.6 11.7 108
Joe Wright 10120 8.5 10.8 79 12.6 13.8 91
Laprele Creek 8375 6.9 4.7 147 7.3 6.6 111
Med Bow 10500 22.7 -M * 19.5 -M *
Never Summer 10280 9.4 10.4 90 6.7 -M *
North French Creek 10130 16.4 13.5 121 16.4 14.2 115
Old Battle 10000 17.4 15.2 114 15.6 19.0 82
Rawah 9020 6.6 5.3 125 8.0 8.4 95
Sage Creek Basin 7850 8.6 7.0 123 7.5 8.6 87
Sand Lake 10050 15.0 14.0 107 14.1 12.9 109
South Brush Creek 8440 6.2 5.9 105 6.8 8.2 83
Tower 10500 22.7 21.6 105 20.9 21.5 97
Webber Springs 9250 12.3 11.6 106 13.5 14.4 94
Whiskey Park 8950 17.7 12.0 148 18.1 14.6 124
Willow Creek Pass 9540 6.3 6.1 103 5.9 7.3 81
Zirkel 9340 15.1 15.0 101 17.3 16.5 105
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Basin Index (%) 112 99
SWEETWATER
Deer Park 9700 6.2 7.1 87 5.1 10.7 48
Larsen Creek 9000 2.4 5.8 41 4.3 -M *
South Pass 9040 5.2 7.4 70 3.9 9.5 41
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Basin Index (%) 68 45
LOWER N. PLATTE
Casper Mtn. 7900 8.7 6.7 130 6.1 8.0 76
Laprele Creek 8375 6.9 4.7 147 7.3 6.6 111
Reno Hill 8400 8.9 6.5 137 9.3 7.9 118
Windy Peak 7900 5.6 3.4 165 4.8 5.7 84
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Basin Index (%) 141 98
LARAMIE RIVER
Brooklyn Lake 10240 14.4 10.2 141 14.0 10.7 131
Cinnabar Park 9574 13.2 11.4 116 14.6 14.0 104
Crow Creek 8330 4.9 4.9 100 6.5 6.0 108
Deadman Hill 10220 9.8 8.0 122 8.5 8.9 96
Rawah 9020 6.6 5.3 125 8.0 8.4 95
Roach 9700 8.2 8.4 98 7.8 10.2 76
Windy Peak 7900 5.6 3.4 165 4.8 5.7 84
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Basin Index (%) 122 100
S. PLATTE
Black Mountain 8920 5.8 -M * 7.1 -M *
Crow Creek 8330 4.9 4.9 100 6.5 6.0 108
Deadman Hill 10220 9.8 8.0 122 8.5 8.9 96
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Basin Index (%) 114 101
LITTLE SNAKE RIVER
Battle Mountain 7440 8.3 5.3 157 8.1 8.2 99
Divide Peak 8880 11.6 10.0 116 12.6 11.7 108
Elk River 8700 11.5 8.8 131 8.8 10.8 81
Little Snake River 8915 15.2 11.9 128 19.2 17.7 108
Old Battle 10000 17.4 15.2 114 15.6 19.0 82
Sage Creek Basin 7850 8.6 7.0 123 7.5 8.6 87
Sandstone RS 8150 9.8 6.2 158 9.0 10.1 89
Whiskey Park 8950 17.7 12.0 148 18.1 14.6 124
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Basin Index (%) 131 98
UPPER GREEN RIVER
Big Sandy Opening 9080 5.1 7.0 73 4.4 7.2 61
Blind Bull Sum 8650 12.1 11.8 103 7.5 10.9 69
East Rim Divide 7930 5.8 5.3 109 4.8 6.5 74
Elkhart Park G.S. 9400 5.2 6.2 84 5.2 7.3 71
Gros Ventre Summit 8750 5.3 7.3 73 5.2 7.0 74
Gunsight Pass 9820 6.5 7.2 90 6.7 7.6 88
Indian Creek 9425 10.1 11.8 86 8.0 11.9 67
Kendall R.S. 7740 5.3 6.2 85 5.4 7.8 69
Loomis Park 8240 7.2 7.4 97 9.4 9.5 99
New Fork Lake 8340 5.7 5.4 106 4.5 6.0 75
Pocket Creek 9360 -M -M * 3.8 -M *
Snider Basin 8060 6.3 6.2 102 6.9 7.8 88
Spring Creek Divide 9000 11.6 11.4 102 11.4 13.1 87
Triple Peak 8500 12.9 10.9 118 12.9 13.4 96
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Basin Index (%) 95 80
LOWER GREEN RIVER
Blacks Fork Jct 8869 4.1 -M * 7.0 -M *
Buck Pasture 9632 9.8 -M * 10.0 -M *
EF Blacks Fork GS 9360 8.2 -M * 5.8 -M *
Hams Fork 7840 5.5 5.5 100 5.7 6.2 92
Hewinta 9500 6.2 4.8 129 8.5 7.4 115
Hickerson Park 9122 6.2 3.2 194 7.0 5.4 130
Hole-in-Rock 9168 6.7 3.3 203 6.9 5.1 135
Indian Creek 9425 10.1 11.8 86 8.0 11.9 67
Kelley R.S. 8180 7.7 7.2 107 8.2 9.9 83
Spirit Lk 10235 10.0 -M * 10.8 -M *
Steel Creek Park 10158 9.4 7.1 132 10.3 8.5 121
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Basin Index (%) 121 100
UPPER BEAR RIVER
Bear River RS 8777 4.8 -M * 6.2 -M *
Bug Lake 7987 10.6 8.0 132 10.1 10.6 95
Burts Miller Ranch 8000 4.2 -M * 4.3 -M *
Chalk Creek #1 9171 10.3 11.3 91 9.8 13.4 73
Hayden Fork 9130 8.5 6.8 125 11.4 11.2 102
Kelley R.S. 8180 7.7 7.2 107 8.2 9.9 83
Lily Lake 9133 5.9 6.2 95 7.0 9.2 76
Monte Cristo 8932 14.9 13.2 113 13.7 13.9 99
Salt River Summit 7640 6.6 5.9 112 7.2 9.0 80
Spring Creek Divide 9000 11.6 11.4 102 11.4 13.1 87
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Basin Index (%) 109 87
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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.