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: JANUARY 24 , 2018
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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 11.0 10.3 107 12.8 13.1 98
Black Bear 8170 25.1 22.6 111 24.2 23.4 103
Blind Bull Sum 8650 17.5 12.9 136 11.2 12.1 93
Cottonwood Creek 7670 12.5 11.6 108 14.2 14.8 96
East Rim Divide 7930 6.3 6.4 98 6.7 7.2 93
Grand Targhee 9260 30.2 22.3 135 18.0 19.1 94
Granite Creek 6770 9.3 9.3 100 12.4 12.7 98
Grassy Lake 7265 16.5 18.3 90 20.2 22.3 91
Gros Ventre Summit 8750 9.4 7.8 121 8.9 7.7 116
Gunsight Pass 9820 9.2 7.8 118 9.6 8.4 114
Lewis Lake Divide 7850 18.8 18.0 104 21.4 21.7 99
Phillips Bench 8200 13.1 15.8 83 14.9 17.0 88
Salt River Summit 7640 5.5 7.2 76 7.4 9.9 75
Snake River Station 6920 10.0 9.6 104 14.3 14.4 99
Spring Creek Divide 9000 14.2 12.9 110 14.1 14.4 98
Thumb Divide 7980 11.1 8.8 126 12.1 11.5 105
Togwotee Pass 9580 18.6 13.6 137 18.9 14.9 127
Two Ocean Plateau 9240 23.7 16.0 148 17.8 16.2 110
Willow Creek 8080 18.0 16.0 112 20.9 20.2 103
Younts Peak 8350 -M 8.8 * -M 9.9 *
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Basin Index (%) 113 100
MADISON-GALLATIN
Black Bear 8170 25.1 22.6 111 24.2 23.4 103
Canyon 7870 10.5 7.7 136 12.1 10.1 120
Madison Plateau 7750 15.2 13.6 112 16.2 16.2 100
West Yellowstone 6700 7.8 6.7 116 10.6 8.9 119
Whiskey Creek 6800 9.1 9.2 99 10.9 12.5 87
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Basin Index (%) 113 104
YELLOWSTONE
Beartooth Lake 9360 23.0 13.0 177 21.1 12.0 176
Burnt Mtn 5880 3.6 2.4 150 8.9 7.6 117
Canyon 7870 10.5 7.7 136 12.1 10.1 120
Cole Creek 7850 9.3 7.7 121 6.0 7.3 82
Evening Star 9200 24.1 14.8 163 25.5 16.8 152
Fisher Creek 9100 31.0 19.6 158 26.5 19.4 137
Northeast Entrance 7350 7.0 6.0 117 10.4 7.8 133
Parker Peak 9400 20.9 12.1 173 18.1 10.7 169
Sylvan Lake 8420 15.0 12.0 125 16.4 14.0 117
Thumb Divide 7980 11.1 8.8 126 12.1 11.5 105
Two Ocean Plateau 9240 23.7 16.0 148 17.8 16.2 110
White Mill 8700 24.0 13.7 175 17.4 14.5 120
Wolverine 7650 10.8 6.5 166 13.1 7.8 168
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Basin Index (%) 153 132
WIND RIVER
Burroughs Creek 8750 9.3 -M * 11.2 -M *
Castle Creek 8400 5.2 -M * 6.5 -M *
Cold Springs 9630 6.0 4.2 143 6.4 5.9 108
Deer Park 9700 7.7 8.2 94 9.0 11.7 77
Hobbs Park 10100 11.0 7.7 143 9.3 7.4 126
Kirwin 9550 12.0 5.4 222 10.7 6.9 155
Little Warm 9370 10.2 5.9 173 10.3 7.7 134
Owl Creek 8975 2.7 3.0 90 4.3 3.4 126
South Pass 9040 7.1 8.2 87 5.0 10.3 49
St. Lawrence Alt 8620 2.6 3.8 68 5.9 5.1 116
Togwotee Pass 9580 18.6 13.6 137 18.9 14.9 127
Townsend Creek 8700 4.8 4.8 100 5.9 6.8 87
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Basin Index (%) 128 107
BIGHORN BASIN
Bald Mtn. 9380 11.9 10.3 116 8.0 10.1 79
Bear Trap Meadow 8200 4.8 3.2 150 5.9 4.9 120
Bone Springs Div 9350 10.0 9.4 106 7.5 9.1 82
Grave Springs 8550 4.2 4.7 89 3.6 6.1 59
Kirwin 9550 12.0 5.4 222 10.7 6.9 155
Marquette 8760 3.8 -M * 6.7 -M *
Middle Powder 7760 5.4 6.0 90 3.7 7.0 53
Owl Creek 8975 2.7 3.0 90 4.3 3.4 126
Powder River Pass 9480 9.2 6.0 153 7.8 7.4 105
Shell Creek 9580 12.0 8.7 138 8.4 8.3 101
Timber Creek 7950 2.2 2.9 76 1.5 4.3 35
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Basin Index (%) 125 91
SHOSHONE RIVER
Blackwater 9780 21.9 13.4 163 19.4 12.5 155
Evening Star 9200 24.1 14.8 163 25.5 16.8 152
Marquette 8760 3.8 -M * 6.7 -M *
Sylvan Road 7120 9.1 7.4 123 13.1 11.2 117
Younts Peak 8350 -M 8.8 * -M 9.9 *
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Basin Index (%) 155 143
POWDER RIVER
Bear Trap Meadow 8200 4.8 3.2 150 5.9 4.9 120
Cloud Peak Reservoir 9860 8.3 7.8 106 7.9 7.5 105
Grave Springs 8550 4.2 4.7 89 3.6 6.1 59
Hansen Sawmill 8360 4.1 3.9 105 5.4 4.7 115
Middle Powder 7760 5.4 6.0 90 3.7 7.0 53
Powder River Pass 9480 9.2 6.0 153 7.8 7.4 105
Soldier Park 8720 2.8 -M * 5.6 -M *
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Basin Index (%) 114 91
TONGUE RIVER
Big Goose 7990 3.8 4.5 84 4.4 6.2 71
Bone Springs Div 9350 10.0 9.4 106 7.5 9.1 82
Burgess Junction 7880 4.6 6.3 73 4.2 7.1 59
Dome Lake 8880 6.4 6.5 98 6.0 7.9 76
Little Goose 8870 4.7 -M * 6.7 -M *
Sucker Creek 8880 5.2 6.7 78 -M 8.2 *
Tie Creek 6870 1.9 3.1 61 5.0 6.8 74
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Basin Index (%) 87 73
BELLE FOURCHE
Cole Canyon 5910 3.5 3.0 117 5.1 5.5 93
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Basin Index (%) 117 93
CHEYENNE RIVER BASIN
Blind Park 6890 4.3 4.1 105 6.4 7.3 88
North Rapid Creek 6130 4.5 4.0 112 4.8 5.9 81
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Basin Index (%) 109 85
UPPER N. PLATTE
Arapaho Ridge 10960 11.5 11.8 97 11.4 13.3 86
Blackhall Mtn 9820 14.9 -M * 15.2 -M *
Columbine 9160 5.3 13.6 39 -M 15.1 *
Divide Peak 8880 8.3 11.4 73 11.6 12.9 90
Joe Wright 10120 9.7 12.3 79 16.8 15.0 112
Laprele Creek 8375 4.0 5.3 75 5.5 7.1 77
Med Bow 10500 23.3 -M * 19.8 -M *
North French Creek 10130 16.6 15.0 111 16.9 15.7 108
Never Summer 10280 9.9 11.3 88 8.7 -M *
Old Battle 10000 14.3 17.6 81 13.7 20.9 66
Rawah 9020 6.6 5.8 114 9.3 8.7 107
Sage Creek Basin 7850 5.8 7.6 76 7.1 9.1 78
Sand Lake 10050 15.4 15.5 99 12.8 14.1 91
South Brush Creek 8440 5.9 6.8 87 7.5 8.9 84
Tower 10500 17.2 25.3 68 17.9 23.7 76
Webber Springs 9250 10.2 12.7 80 12.6 15.9 79
Willow Creek Pass 9540 8.0 6.9 116 8.5 7.8 109
Zirkel 9340 11.5 16.8 68 16.6 17.4 95
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Basin Index (%) 82 88
SWEETWATER
Deer Park 9700 7.7 8.2 94 9.0 11.7 77
Larsen Creek 9000 4.5 6.7 67 7.1 -M *
South Pass 9040 7.1 8.2 87 5.0 10.3 49
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Basin Index (%) 84 64
LOWER N. PLATTE
Casper Mtn. 7900 5.1 7.2 71 3.9 8.6 45
Laprele Creek 8375 4.0 5.3 75 5.5 7.1 77
Reno Hill 8400 6.2 7.3 85 7.3 8.5 86
Windy Peak 7900 3.8 3.9 97 5.1 6.1 84
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Basin Index (%) 81 72
LARAMIE RIVER
Brooklyn Lake 10240 13.5 11.5 117 14.3 12.0 119
Cinnabar Park 9574 13.9 12.4 112 16.5 14.8 111
Crow Creek 8330 1.9 5.5 35 7.1 6.3 113
Deadman Hill 10220 11.3 9.0 126 11.2 9.6 117
Rawah 9020 6.6 5.8 114 9.3 8.7 107
Roach 9700 8.4 9.5 88 11.0 11.1 99
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Basin Index (%) 104 111
S. PLATTE
Black Mountain 8920 5.5 -M * 8.2 -M *
Crow Creek 8330 1.9 5.5 35 7.1 6.3 113
Deadman Hill 10220 11.3 9.0 126 11.2 9.6 117
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Basin Index (%) 91 115
LITTLE SNAKE RIVER
Battle Mountain 7440 3.4 6.5 52 -M 9.1 *
Divide Peak 8880 8.3 11.4 73 11.6 12.9 90
Elk River 8700 8.2 10.1 81 9.5 11.9 80
Little Snake River 8915 10.6 13.8 77 16.0 19.3 83
Old Battle 10000 14.3 17.6 81 13.7 20.9 66
Sage Creek Basin 7850 5.8 7.6 76 7.1 9.1 78
Sandstone RS 8150 5.2 7.4 70 5.0 11.2 45
Whiskey Park 8950 11.8 14.9 79 14.6 16.5 88
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Basin Index (%) 76 76
UPPER GREEN RIVER
Big Sandy Opening 9080 7.9 7.3 108 8.0 7.9 101
Blind Bull Sum 8650 17.5 12.9 136 11.2 12.1 93
East Rim Divide 7930 6.3 6.4 98 6.7 7.2 93
Elkhart Park G.S. 9400 7.1 7.0 101 7.1 8.0 89
Gros Ventre Summit 8750 9.4 7.8 121 8.9 7.7 116
Gunsight Pass 9820 9.2 7.8 118 9.6 8.4 114
Kendall R.S. 7740 8.4 7.2 117 9.4 8.6 109
Loomis Park 8240 9.0 9.0 100 9.9 10.6 93
New Fork Lake 8340 6.7 6.4 105 -M 6.6 *
Pocket Creek 9360 6.2 -M * 5.4 -M *
Snider Basin 8060 6.5 6.9 94 8.4 8.6 98
Spring Creek Divide 9000 14.2 12.9 110 14.1 14.4 98
Triple Peak 8500 14.6 12.0 122 16.6 15.0 111
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Basin Index (%) 113 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 4.3 -M * 5.7 -M *
Buck Pasture 9632 6.8 -M * 7.8 -M *
EF Blacks Fork GS 9360 4.0 -M * 4.3 -M *
Hams Fork 7840 4.7 6.7 70 5.3 6.8 78
Hewinta 9500 4.9 5.1 96 6.9 8.1 85
Hickerson Park 9122 4.2 3.4 124 3.6 5.8 62
Hole-in-Rock 9168 3.7 3.7 100 4.3 5.5 78
Indian Creek 9425 11.8 13.6 87 9.0 13.1 69
Kelley R.S. 8180 7.0 8.4 83 8.2 10.8 76
Spirit Lk 10235 4.8 -M * 5.5 -M *
Steel Creek Park 10158 8.1 7.9 103 8.3 9.3 89
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Basin Index (%) 91 77
UPPER BEAR RIVER
Bear River RS 8777 5.1 -M * 6.6 -M *
Bug Lake 7987 9.0 9.4 96 9.8 11.6 84
Burts Miller Ranch 8000 3.5 -M * 4.2 -M *
Chalk Creek #1 9171 8.6 12.4 69 9.5 14.6 65
Hayden Fork 9130 7.2 8.0 90 9.1 12.3 74
Kelley R.S. 8180 7.0 8.4 83 8.2 10.8 76
Lily Lake 9133 6.7 6.9 97 7.0 10.0 70
Monte Cristo 8932 11.8 14.4 82 11.7 15.3 76
Salt River Summit 7640 5.5 7.2 76 7.4 9.9 75
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Basin Index (%) 84 74
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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.