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: JANUARY 31 , 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 10.5 10.8 97 10.9 14.0 78
Black Bear 8170 21.4 23.2 92 20.6 24.8 83
Blind Bull Sum 8650 15.4 13.7 112 9.6 12.8 75
Cottonwood Creek 7670 16.2 12.7 128 17.2 15.8 109
East Rim Divide 7930 7.1 6.8 104 5.9 7.7 77
Grand Targhee 9260 27.1 23.5 115 18.9 20.5 92
Granite Creek 6770 10.1 10.4 97 10.1 13.6 74
Grassy Lake 7265 21.0 20.0 105 31.9 23.8 134
Gros Ventre Summit 8750 6.0 8.3 72 5.8 8.2 71
Gunsight Pass 9820 7.7 8.2 94 7.8 8.8 89
Lewis Lake Divide 7850 17.3 19.8 87 20.0 23.1 87
Phillips Bench 8200 17.2 15.9 108 16.7 18.1 92
Salt River Summit 7640 8.8 7.7 114 9.5 10.6 90
Snake River Station 6920 11.4 10.7 107 13.4 15.4 87
Spring Creek Divide 9000 15.1 14.3 106 14.5 15.3 95
Thumb Divide 7980 9.1 9.6 95 9.3 12.1 77
Togwotee Pass 9580 15.8 14.9 106 15.0 15.8 95
Two Ocean Plateau 9240 18.0 17.4 103 14.4 17.2 84
Willow Creek 8080 19.7 17.0 116 20.8 21.5 97
Younts Peak 8350 10.1 9.5 106 8.0 10.4 77
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Basin Index (%) 104 91
MADISON-GALLATIN
Black Bear 8170 21.4 23.2 92 20.6 24.8 83
Canyon 7870 8.3 8.1 102 8.6 10.7 80
Madison Plateau 7750 13.3 14.0 95 11.3 17.3 65
West Yellowstone 6700 6.9 7.0 99 5.1 9.6 53
Whiskey Creek 6800 9.5 9.6 99 10.9 13.2 83
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Basin Index (%) 96 75
YELLOWSTONE
Beartooth Lake 9360 13.8 13.8 100 12.8 12.8 100
Burnt Mtn 5880 2.1 2.4 88 6.8 7.8 87
Canyon 7870 8.3 8.1 102 8.6 10.7 80
Cole Creek 7850 8.2 8.3 99 6.8 7.6 89
Evening Star 9200 17.4 16.2 107 19.2 17.8 108
Fisher Creek 9100 19.7 20.5 96 20.2 20.6 98
Northeast Entrance 7350 6.6 6.3 105 7.7 8.2 94
Parker Peak 9400 15.3 12.9 119 14.2 11.3 126
Sylvan Lake 8420 13.1 12.9 102 14.6 14.8 99
Thumb Divide 7980 9.1 9.6 95 9.3 12.1 77
Two Ocean Plateau 9240 18.0 17.4 103 14.4 17.2 84
White Mill 8700 16.1 14.5 111 12.7 15.3 83
Wolverine 7650 8.4 7.0 120 8.4 8.1 104
Younts Peak 8350 10.1 9.5 106 8.0 10.4 77
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Basin Index (%) 104 94
WIND RIVER
Burroughs Creek 8750 7.0 -M * 8.7 -M *
Castle Creek 8400 3.2 -M * 4.1 -M *
Cold Springs 9630 4.3 4.5 96 4.2 6.2 68
Deer Park 9700 7.9 9.3 85 7.2 12.2 59
Hobbs Park 10100 7.5 7.9 95 6.5 7.7 84
Kirwin 9550 7.2 5.8 124 6.1 7.2 85
Little Warm 9370 7.0 6.3 111 4.8 8.1 59
Owl Creek 8975 3.2 3.1 103 3.7 3.6 103
South Pass 9040 6.9 8.7 79 5.3 10.9 49
St. Lawrence Alt 8620 2.8 4.2 67 3.9 5.3 74
Togwotee Pass 9580 15.8 14.9 106 15.0 15.8 95
Townsend Creek 8700 5.1 5.1 100 5.2 7.0 74
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Basin Index (%) 97 74
BIGHORN BASIN
Bald Mtn. 9380 13.2 10.8 122 10.2 10.6 96
Bear Trap Meadow 8200 5.8 3.4 171 6.3 5.1 124
Bone Springs Div 9350 10.6 9.8 108 8.1 9.6 84
Grave Springs 8550 6.4 4.9 131 6.8 6.4 106
Kirwin 9550 7.2 5.8 124 6.1 7.2 85
Marquette 8760 4.3 -M * 5.7 -M *
Middle Powder 7760 7.4 6.3 117 8.2 7.3 112
Owl Creek 8975 3.2 3.1 103 3.7 3.6 103
Powder River Pass 9480 8.3 6.4 130 8.2 7.8 105
Shell Creek 9580 9.9 9.1 109 9.7 8.9 109
Timber Creek 7950 3.6 2.9 124 4.1 4.5 91
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Basin Index (%) 121 101
SHOSHONE RIVER
Blackwater 9780 13.9 14.7 95 13.7 13.2 104
Evening Star 9200 17.4 16.2 107 19.2 17.8 108
Marquette 8760 4.3 -M * 5.7 -M *
Sylvan Lake 8420 13.1 12.9 102 14.6 14.8 99
Sylvan Road 7120 8.0 7.8 103 10.3 11.8 87
Younts Peak 8350 10.1 9.5 106 8.0 10.4 77
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Basin Index (%) 102 97
POWDER RIVER
Bear Trap Meadow 8200 5.8 3.4 171 6.3 5.1 124
Cloud Peak Reservoir 9860 7.8 8.2 95 7.4 7.9 94
Grave Springs 8550 6.4 4.9 131 6.8 6.4 106
Hansen Sawmill 8360 4.3 4.0 108 5.2 5.0 104
Middle Powder 7760 7.4 6.3 117 8.2 7.3 112
Powder River Pass 9480 8.3 6.4 130 8.2 7.8 105
Soldier Park 8720 2.8 -M * 5.3 -M *
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Basin Index (%) 120 107
TONGUE RIVER
Big Goose 7990 4.8 4.9 98 5.9 6.5 91
Bone Springs Div 9350 10.6 9.8 108 8.1 9.6 84
Burgess Junction 7880 6.2 6.6 94 7.1 7.4 96
Dome Lake 8880 6.2 6.8 91 4.5 8.3 54
Little Goose 8870 5.8 -M * 5.0 -M *
Sucker Creek 8880 7.7 7.0 110 6.3 8.6 73
Tie Creek 6870 3.8 3.4 112 7.1 7.0 101
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Basin Index (%) 102 82
BELLE FOURCHE
Blind Park 6890 5.3 4.6 115 6.1 7.7 79
Cole Canyon 5910 3.1 3.2 97 6.7 5.6 120
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Basin Index (%) 108 96
CHEYENNE RIVER BASIN
Blind Park 6890 5.3 4.6 115 6.1 7.7 79
North Rapid Creek 6130 4.6 4.2 110 5.7 6.2 92
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Basin Index (%) 112 85
UPPER N. PLATTE
Arapaho Ridge 10960 13.8 13.1 105 13.3 14.0 95
Blackhall Mtn 9820 18.7 -M * 18.6 -M *
Columbine 9160 17.7 14.5 122 -M 16.3 *
Divide Peak 8880 14.1 12.2 116 15.1 13.5 112
Joe Wright 10120 10.3 12.9 80 14.9 15.9 94
Laprele Creek 8375 7.7 5.4 143 7.9 7.5 105
Med Bow 10500 28.4 -M * 23.6 -M *
Never Summer 10280 11.2 12.4 90 8.0 -M *
North French Creek 10130 21.5 15.9 135 21.0 16.8 125
Old Battle 10000 20.7 19.0 109 19.1 22.2 86
Rawah 9020 7.5 6.1 123 9.1 9.0 101
Sage Creek Basin 7850 10.3 8.3 124 9.1 9.8 93
Sand Lake 10050 -M 16.3 * -M 15.0 *
South Brush Creek 8440 8.4 7.3 115 8.6 9.5 91
Tower 10500 28.0 27.2 103 25.3 25.3 100
Webber Springs 9250 14.4 13.5 107 15.7 16.9 93
Whiskey Park 8950 21.4 15.8 135 21.4 17.7 121
Willow Creek Pass 9540 7.2 7.5 96 6.7 8.3 81
Zirkel 9340 18.0 18.3 98 20.7 18.7 111
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Basin Index (%) 111 101
SWEETWATER
Deer Park 9700 7.9 9.3 85 7.2 12.2 59
Larsen Creek 9000 3.5 7.2 49 5.1 -M *
South Pass 9040 6.9 8.7 79 5.3 10.9 49
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Basin Index (%) 73 54
LOWER N. PLATTE
Casper Mtn. 7900 10.1 7.5 135 6.7 9.0 74
Laprele Creek 8375 7.7 5.4 143 7.9 7.5 105
Reno Hill 8400 10.2 7.6 134 10.5 8.8 119
Windy Peak 7900 6.3 4.1 154 5.4 6.3 86
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Basin Index (%) 139 97
LARAMIE RIVER
Brooklyn Lake 10240 17.0 12.0 142 16.6 12.8 130
Cinnabar Park 9574 15.2 13.1 116 16.8 15.7 107
Crow Creek 8330 5.1 5.7 89 7.1 6.4 111
Deadman Hill 10220 11.4 10.0 114 9.8 10.2 96
Rawah 9020 7.5 6.1 123 9.1 9.0 101
Roach 9700 9.2 9.9 93 9.0 11.7 77
Windy Peak 7900 6.3 4.1 154 5.4 6.3 86
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Basin Index (%) 118 102
S. PLATTE
Black Mountain 8920 6.3 -M * 7.8 -M *
Crow Creek 8330 5.1 5.7 89 7.1 6.4 111
Deadman Hill 10220 11.4 10.0 114 9.8 10.2 96
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Basin Index (%) 105 102
LITTLE SNAKE RIVER
Battle Mountain 7440 9.9 7.0 141 10.0 9.6 104
Divide Peak 8880 14.1 12.2 116 15.1 13.5 112
Elk River 8700 13.6 11.1 123 10.9 12.6 87
Little Snake River 8915 18.2 15.4 118 22.5 20.4 110
Old Battle 10000 20.7 19.0 109 19.1 22.2 86
Sage Creek Basin 7850 10.3 8.3 124 9.1 9.8 93
Sandstone RS 8150 11.5 8.0 144 10.8 11.9 91
Whiskey Park 8950 21.4 15.8 135 21.4 17.7 121
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Basin Index (%) 124 101
UPPER GREEN RIVER
Big Sandy Opening 9080 6.2 8.1 77 5.3 8.3 64
Blind Bull Sum 8650 15.4 13.7 112 9.6 12.8 75
East Rim Divide 7930 7.1 6.8 104 5.9 7.7 77
Elkhart Park G.S. 9400 6.4 7.4 86 6.4 8.4 76
Gros Ventre Summit 8750 6.0 8.3 72 5.8 8.2 71
Gunsight Pass 9820 7.7 8.2 94 7.8 8.8 89
Indian Creek 9425 13.7 14.5 94 10.4 13.9 75
Kendall R.S. 7740 6.4 7.8 82 6.3 9.2 68
Loomis Park 8240 8.8 9.4 94 11.2 11.2 100
New Fork Lake 8340 6.7 6.8 99 -M 7.0 *
Pocket Creek 9360 -M -M * 5.0 -M *
Snider Basin 8060 7.9 7.4 107 8.5 9.2 92
Spring Creek Divide 9000 15.1 14.3 106 14.5 15.3 95
Triple Peak 8500 15.7 13.1 120 15.6 15.9 98
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Basin Index (%) 98 83
LOWER GREEN RIVER
Blacks Fork Jct 8869 5.4 -M * 8.4 -M *
Buck Pasture 9632 12.0 -M * 12.1 -M *
EF Blacks Fork GS 9360 10.2 -M * 6.7 -M *
Hams Fork 7840 7.2 7.0 103 7.0 7.3 96
Hewinta 9500 7.7 5.6 138 9.8 8.6 114
Hickerson Park 9122 7.1 3.8 187 7.8 6.1 128
Hole-in-Rock 9168 7.5 4.0 188 7.6 5.7 133
Indian Creek 9425 13.7 14.5 94 10.4 13.9 75
Kelley R.S. 8180 9.9 8.9 111 10.3 11.5 90
Spirit Lk 10235 11.5 -M * 12.2 -M *
Steel Creek Park 10158 11.4 8.6 133 12.3 9.8 126
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Basin Index (%) 123 104
UPPER BEAR RIVER
Bear River RS 8777 6.2 -M * 7.5 -M *
Bug Lake 7987 13.2 10.5 126 12.3 12.3 100
Burts Miller Ranch 8000 5.2 -M * 4.9 -M *
Chalk Creek #1 9171 13.0 13.3 98 12.3 15.6 79
Hayden Fork 9130 10.9 8.5 128 13.8 13.0 106
Kelley R.S. 8180 9.9 8.9 111 10.3 11.5 90
Lily Lake 9133 7.1 7.4 96 8.5 10.6 80
Monte Cristo 8932 18.4 15.8 116 16.6 16.2 102
Salt River Summit 7640 8.8 7.7 114 9.5 10.6 90
Spring Creek Divide 9000 15.1 14.3 106 14.5 15.3 95
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Basin Index (%) 112 93
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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.