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: JANUARY 7 , 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 6.4 7.9 81 6.8 10.8 63
Black Bear 8170 13.5 19.0 71 13.6 19.5 70
Blind Bull Sum 8650 10.5 10.1 104 6.5 10.1 64
Cottonwood Creek 7670 11.6 9.0 129 11.7 12.2 96
East Rim Divide 7930 5.3 4.8 110 4.5 6.0 75
Grand Targhee 9260 20.0 19.1 105 12.5 16.6 75
Granite Creek 6770 6.5 7.0 93 6.9 10.3 67
Grassy Lake 7265 11.3 14.2 80 19.0 18.6 102
Gros Ventre Summit 8750 4.9 6.6 74 4.9 6.6 74
Gunsight Pass 9820 6.1 6.7 91 6.3 7.0 90
Lewis Lake Divide 7850 9.4 14.5 65 12.1 18.3 66
Phillips Bench 8200 11.9 12.1 98 11.8 14.1 84
Salt River Summit 7640 5.9 5.3 111 6.6 8.2 80
Snake River Station 6920 7.1 7.4 96 8.9 12.0 74
Spring Creek Divide 9000 10.3 10.8 95 10.2 11.9 86
Thumb Divide 7980 5.7 6.8 84 6.5 9.5 68
Togwotee Pass 9580 12.4 11.8 105 11.8 12.5 94
Two Ocean Plateau 9240 12.4 13.6 91 9.8 13.7 72
Willow Creek 8080 12.3 12.1 102 14.3 17.0 84
Younts Peak 8350 8.0 7.3 110 4.8 8.4 57
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Basin Index (%) 93 78
MADISON-GALLATIN
Black Bear 8170 13.5 19.0 71 13.6 19.5 70
Canyon 7870 5.9 6.1 97 6.1 8.5 72
Madison Plateau 7750 9.0 10.8 83 8.3 13.6 61
West Yellowstone 6700 4.9 5.3 92 3.8 7.7 49
Whiskey Creek 6800 6.6 7.5 88 7.7 10.6 73
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Basin Index (%) 82 66
YELLOWSTONE
Beartooth Lake 9360 10.8 10.7 101 9.9 9.9 100
Burnt Mtn 5880 1.6 1.9 84 6.4 7.0 91
Canyon 7870 5.9 6.1 97 6.1 8.5 72
Cole Creek 7850 7.0 6.5 108 6.0 6.7 90
Evening Star 9200 13.0 12.5 104 14.5 14.2 102
Fisher Creek 9100 14.3 16.4 87 14.8 16.3 91
Northeast Entrance 7350 5.1 4.7 109 6.2 6.7 93
Parker Peak 9400 12.0 10.8 111 11.0 9.2 120
Sylvan Lake 8420 9.5 10.1 94 10.9 12.0 91
Thumb Divide 7980 5.7 6.8 84 6.5 9.5 68
Two Ocean Plateau 9240 12.4 13.6 91 9.8 13.7 72
White Mill 8700 12.0 11.0 109 9.3 12.2 76
Wolverine 7650 7.4 5.4 137 7.2 6.7 107
Younts Peak 8350 8.0 7.3 110 4.8 8.4 57
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Basin Index (%) 101 88
WIND RIVER
Burroughs Creek 8750 5.5 -M * 6.9 -M *
Castle Creek 8400 3.0 -M * 3.8 -M *
Cold Springs 9630 3.8 3.4 112 3.6 5.2 69
Deer Park 9700 5.9 6.8 87 5.1 9.8 52
Hobbs Park 10100 5.9 7.0 84 5.4 6.6 82
Kirwin 9550 6.6 4.6 143 5.3 6.0 88
Little Warm 9370 6.0 4.9 122 3.9 6.6 59
Owl Creek 8975 2.9 2.7 107 3.4 3.0 113
South Pass 9040 4.8 6.9 70 3.9 8.9 44
St. Lawrence Alt 8620 2.8 3.2 88 3.7 4.5 82
Togwotee Pass 9580 12.4 11.8 105 11.8 12.5 94
Townsend Creek 8700 4.6 4.2 110 4.7 6.1 77
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Basin Index (%) 100 73
BIGHORN BASIN
Bald Mtn. 9380 11.2 9.2 122 8.0 8.5 94
Bear Trap Meadow 8200 5.0 2.7 185 5.7 4.4 130
Bone Springs Div 9350 8.8 7.8 113 6.3 7.7 82
Grave Springs 8550 5.4 3.8 142 6.4 5.3 121
Kirwin 9550 6.6 4.6 143 5.3 6.0 88
Marquette 8760 4.0 -M * 4.8 -M *
Middle Powder 7760 6.1 5.3 115 7.1 6.3 113
Owl Creek 8975 2.9 2.7 107 3.4 3.0 113
Powder River Pass 9480 6.9 5.2 133 6.8 6.4 106
Shell Creek 9580 -M 7.4 * -M 7.0 *
Timber Creek 7950 3.6 2.2 164 4.0 4.0 100
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Basin Index (%) 130 103
SHOSHONE RIVER
Blackwater 9780 10.7 11.3 95 10.2 10.7 95
Evening Star 9200 13.0 12.5 104 14.5 14.2 102
Marquette 8760 4.0 -M * 4.8 -M *
Sylvan Lake 8420 9.5 10.1 94 10.9 12.0 91
Sylvan Road 7120 5.8 6.0 97 -M 9.7 *
Younts Peak 8350 8.0 7.3 110 4.8 8.4 57
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Basin Index (%) 100 89
POWDER RIVER
Bear Trap Meadow 8200 5.0 2.7 185 5.7 4.4 130
Cloud Peak Reservoir 9860 6.5 6.6 98 6.6 6.6 100
Grave Springs 8550 5.4 3.8 142 6.4 5.3 121
Hansen Sawmill 8360 3.5 3.2 109 4.4 4.2 105
Middle Powder 7760 6.1 5.3 115 7.1 6.3 113
Powder River Pass 9480 6.9 5.2 133 6.8 6.4 106
Soldier Park 8720 2.2 -M * 4.5 -M *
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Basin Index (%) 125 111
TONGUE RIVER
Big Goose 7990 3.9 3.9 100 5.4 5.5 98
Bone Springs Div 9350 8.8 7.8 113 6.3 7.7 82
Burgess Junction 7880 5.2 5.0 104 -M 6.2 *
Dome Lake 8880 4.9 5.6 88 3.7 7.1 52
Little Goose 8870 4.7 -M * 4.2 -M *
Sucker Creek 8880 6.6 5.6 118 5.4 7.1 76
Tie Creek 6870 3.3 2.3 143 6.4 5.9 108
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Basin Index (%) 108 82
BELLE FOURCHE
Blind Park 6890 3.9 3.6 108 5.1 6.3 81
Cole Canyon 5910 2.8 2.4 117 -M 4.8 *
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Basin Index (%) 112 81
CHEYENNE RIVER BASIN
Blind Park 6890 3.9 3.6 108 5.1 6.3 81
North Rapid Creek 6130 3.5 3.3 106 5.1 5.3 96
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Basin Index (%) 107 88
UPPER N. PLATTE
Arapaho Ridge 10960 11.5 10.3 112 11.3 11.7 97
Blackhall Mtn 9820 14.6 -M * 15.1 -M *
Columbine 9160 13.0 9.9 131 13.9 12.5 111
Divide Peak 8880 11.0 9.4 117 12.1 11.1 109
Joe Wright 10120 8.1 10.1 80 12.2 13.0 94
Laprele Creek 8375 6.8 4.3 158 7.2 6.2 116
Med Bow 10500 21.4 -M * 18.6 -M *
Never Summer 10280 8.9 9.7 92 6.4 -M *
North French Creek 10130 15.7 12.6 125 15.8 13.1 121
Old Battle 10000 16.0 14.1 113 15.5 17.7 88
Rawah 9020 6.3 5.0 126 7.8 7.9 99
Sage Creek Basin 7850 8.0 6.4 125 7.0 8.1 86
Sand Lake 10050 14.5 12.9 112 13.6 12.0 113
South Brush Creek 8440 6.2 5.3 117 6.7 7.7 87
Tower 10500 20.4 19.4 105 19.4 19.9 97
Webber Springs 9250 11.4 10.7 107 12.6 13.4 94
Whiskey Park 8950 15.9 10.4 153 16.7 13.3 126
Willow Creek Pass 9540 6.0 5.8 103 5.6 6.9 81
Zirkel 9340 14.0 11.7 120 16.1 15.1 107
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Basin Index (%) 115 102
SWEETWATER
Deer Park 9700 5.9 6.8 87 5.1 9.8 52
Larsen Creek 9000 1.9 5.4 35 3.8 -M *
South Pass 9040 4.8 6.9 70 3.9 8.9 44
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Basin Index (%) 66 48
LOWER N. PLATTE
Casper Mtn. 7900 8.6 6.3 137 6.1 7.7 79
Laprele Creek 8375 6.8 4.3 158 7.2 6.2 116
Reno Hill 8400 8.8 6.2 142 9.3 7.5 124
Windy Peak 7900 5.6 3.2 175 4.8 5.4 89
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Basin Index (%) 149 102
LARAMIE RIVER
Brooklyn Lake 10240 13.6 8.9 153 13.5 9.9 136
Cinnabar Park 9574 12.6 10.2 124 14.0 12.7 110
Crow Creek 8330 4.8 4.8 100 6.6 5.7 116
Deadman Hill 10220 9.5 7.5 127 8.3 8.3 100
Rawah 9020 6.3 5.0 126 7.8 7.9 99
Roach 9700 8.0 7.4 108 7.6 9.6 79
Windy Peak 7900 5.6 3.2 175 4.8 5.4 89
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Basin Index (%) 129 105
S. PLATTE
Black Mountain 8920 5.8 -M * 7.0 -M *
Crow Creek 8330 4.8 4.8 100 6.6 5.7 116
Deadman Hill 10220 9.5 7.5 127 8.3 8.3 100
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Basin Index (%) 116 106
LITTLE SNAKE RIVER
Battle Mountain 7440 7.7 4.8 160 7.7 7.6 101
Divide Peak 8880 11.0 9.4 117 12.1 11.1 109
Elk River 8700 10.7 7.9 135 8.4 9.9 85
Little Snake River 8915 13.8 10.2 135 17.8 16.2 110
Old Battle 10000 16.0 14.1 113 15.5 17.7 88
Sage Creek Basin 7850 8.0 6.4 125 7.0 8.1 86
Sandstone RS 8150 9.1 5.3 172 8.4 9.3 90
Whiskey Park 8950 15.9 10.4 153 16.7 13.3 126
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Basin Index (%) 135 100
UPPER GREEN RIVER
Big Sandy Opening 9080 4.5 6.7 67 3.9 6.8 57
Blind Bull Sum 8650 10.5 10.1 104 6.5 10.1 64
East Rim Divide 7930 5.3 4.8 110 4.5 6.0 75
Elkhart Park G.S. 9400 4.9 5.9 83 4.9 6.9 71
Gros Ventre Summit 8750 4.9 6.6 74 4.9 6.6 74
Gunsight Pass 9820 6.1 6.7 91 6.3 7.0 90
Indian Creek 9425 9.3 10.7 87 7.4 10.8 69
Kendall R.S. 7740 4.6 5.3 87 4.7 7.1 66
Loomis Park 8240 6.3 6.9 91 8.5 8.8 97
New Fork Lake 8340 5.3 5.0 106 -M 5.6 *
Pocket Creek 9360 -M -M * 3.3 -M *
Snider Basin 8060 5.8 5.8 100 6.4 7.2 89
Spring Creek Divide 9000 10.3 10.8 95 10.2 11.9 86
Triple Peak 8500 11.3 9.1 124 11.5 12.1 95
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Basin Index (%) 94 79
LOWER GREEN RIVER
Blacks Fork Jct 8869 3.8 -M * 6.8 -M *
Buck Pasture 9632 9.2 -M * 9.3 -M *
EF Blacks Fork GS 9360 7.8 -M * 5.6 -M *
Hams Fork 7840 5.0 5.0 100 5.3 5.7 93
Hewinta 9500 5.6 4.1 137 8.0 6.9 116
Hickerson Park 9122 6.1 3.0 203 6.8 5.2 131
Hole-in-Rock 9168 6.7 3.1 216 7.0 4.9 143
Indian Creek 9425 9.3 10.7 87 7.4 10.8 69
Kelley R.S. 8180 7.1 6.7 106 7.6 9.1 84
Spirit Lk 10235 9.8 -M * 10.6 -M *
Steel Creek Park 10158 8.9 6.5 137 9.7 8.0 121
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Basin Index (%) 125 102
UPPER BEAR RIVER
Bear River RS 8777 4.4 -M * 5.8 -M *
Bug Lake 7987 9.5 6.9 138 9.1 9.8 93
Burts Miller Ranch 8000 4.0 -M * 4.2 -M *
Chalk Creek #1 9171 9.3 10.5 89 8.8 12.6 70
Hayden Fork 9130 7.3 6.4 114 10.3 10.4 99
Kelley R.S. 8180 7.1 6.7 106 7.6 9.1 84
Lily Lake 9133 5.4 5.5 98 6.5 8.7 75
Monte Cristo 8932 13.5 11.4 118 12.5 12.9 97
Salt River Summit 7640 5.9 5.3 111 6.6 8.2 80
Spring Creek Divide 9000 10.3 10.8 95 10.2 11.9 86
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Basin Index (%) 108 86
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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.