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 14 , 2018
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 13.4 12.4 108 15.1 15.3 99
Black Bear 8170 28.9 26.9 107 27.6 27.3 101
Blind Bull Sum 8650 23.5 15.7 150 14.3 14.2 101
Cottonwood Creek 7670 15.1 14.5 104 17.1 17.5 98
East Rim Divide 7930 8.4 7.2 117 8.5 8.4 101
Grand Targhee 9260 34.9 26.0 134 22.3 22.9 97
Granite Creek 6770 12.6 12.1 104 15.1 14.8 102
Grassy Lake 7265 22.0 23.5 94 25.2 26.4 95
Gros Ventre Summit 8750 9.6 8.9 108 9.6 8.9 108
Gunsight Pass 9820 11.1 9.2 121 11.2 9.8 114
Lewis Lake Divide 7850 26.4 22.8 116 27.7 25.6 108
Phillips Bench 8200 17.0 17.6 97 18.0 20.1 90
Salt River Summit 7640 6.6 9.0 73 8.5 11.8 72
Snake River Station 6920 13.2 12.9 102 17.9 16.9 106
Spring Creek Divide 9000 18.1 16.2 112 17.5 17.1 102
Thumb Divide 7980 12.8 10.4 123 13.4 13.2 102
Togwotee Pass 9580 22.3 16.3 137 22.9 17.4 132
Two Ocean Plateau 9240 28.0 19.3 145 20.2 19.3 105
Willow Creek 8080 22.0 19.0 116 24.5 23.8 103
Younts Peak 8350 -M 10.6 * -M 11.4 *
----- -----
Basin Index (%) 115 102
MADISON-GALLATIN
Black Bear 8170 28.9 26.9 107 27.6 27.3 101
Canyon 7870 12.1 9.2 132 13.9 11.8 118
Madison Plateau 7750 17.8 15.5 115 18.3 18.9 97
West Yellowstone 6700 9.0 7.5 120 11.8 10.6 111
Whiskey Creek 6800 10.7 10.5 102 12.8 14.5 88
----- -----
Basin Index (%) 113 102
YELLOWSTONE
Beartooth Lake 9360 30.3 15.2 199 -M 14.2 *
Burnt Mtn 5880 4.5 3.3 136 10.6 8.5 125
Canyon 7870 12.1 9.2 132 13.9 11.8 118
Cole Creek 7850 10.2 8.8 116 6.9 8.3 83
Evening Star 9200 31.2 17.3 180 30.8 19.8 156
Fisher Creek 9100 39.3 22.7 173 33.8 22.8 148
Northeast Entrance 7350 10.5 7.2 146 14.1 9.0 157
Parker Peak 9400 24.8 13.9 178 21.2 12.5 170
Sylvan Lake 8420 17.7 13.9 127 19.5 16.2 120
Thumb Divide 7980 12.8 10.4 123 13.4 13.2 102
Two Ocean Plateau 9240 28.0 19.3 145 20.2 19.3 105
White Mill 8700 32.1 16.1 199 23.5 17.0 138
Wolverine 7650 -M 7.8 * -M 9.0 *
----- -----
Basin Index (%) 161 131
WIND RIVER
Burroughs Creek 8750 11.9 -M * 13.9 -M *
Castle Creek 8400 6.4 -M * 7.6 -M *
Cold Springs 9630 7.0 5.0 140 7.4 6.6 112
Deer Park 9700 7.7 9.6 80 10.0 13.6 74
Hobbs Park 10100 11.9 8.4 142 10.3 8.5 121
Kirwin 9550 14.8 6.2 239 13.3 7.9 168
Little Warm 9370 11.7 7.1 165 12.0 8.9 135
Owl Creek 8975 3.2 3.2 100 4.9 3.8 129
South Pass 9040 7.8 10.0 78 -M 11.9 *
St. Lawrence Alt 8620 2.5 4.5 56 6.4 5.7 112
Togwotee Pass 9580 22.3 16.3 137 22.9 17.4 132
Townsend Creek 8700 5.3 5.8 91 6.6 7.7 86
----- -----
Basin Index (%) 124 117
BIGHORN BASIN
Bald Mtn. 9380 15.7 12.6 125 10.8 11.7 92
Bear Trap Meadow 8200 6.8 3.8 179 7.6 5.5 138
Bone Springs Div 9350 14.2 10.6 134 10.4 10.5 99
Grave Springs 8550 4.9 5.5 89 3.9 7.1 55
Kirwin 9550 14.8 6.2 239 13.3 7.9 168
Marquette 8760 4.3 -M * 7.8 -M *
Middle Powder 7760 6.4 7.0 91 4.6 7.9 58
Owl Creek 8975 3.2 3.2 100 4.9 3.8 129
Powder River Pass 9480 12.9 7.1 182 11.7 8.5 138
Shell Creek 9580 -M 10.0 * 12.5 9.6 130
Timber Creek 7950 2.6 3.1 84 -M 4.8 *
----- -----
Basin Index (%) 138 110
SHOSHONE RIVER
Blackwater 9780 25.8 15.4 168 23.8 14.4 165
Evening Star 9200 31.2 17.3 180 30.8 19.8 156
Marquette 8760 4.3 -M * 7.8 -M *
Sylvan Road 7120 11.6 8.6 135 16.4 12.8 128
Younts Peak 8350 -M 10.6 * -M 11.4 *
----- -----
Basin Index (%) 166 151
POWDER RIVER
Bear Trap Meadow 8200 6.8 3.8 179 7.6 5.5 138
Cloud Peak Reservoir 9860 11.7 9.4 124 10.3 8.6 120
Grave Springs 8550 4.9 5.5 89 3.9 7.1 55
Hansen Sawmill 8360 5.8 4.3 135 7.0 5.4 130
Middle Powder 7760 6.4 7.0 91 4.6 7.9 58
Powder River Pass 9480 12.9 7.1 182 11.7 8.5 138
Soldier Park 8720 4.6 -M * 6.9 -M *
----- -----
Basin Index (%) 131 105
TONGUE RIVER
Big Goose 7990 5.3 5.6 95 5.7 7.2 79
Bone Springs Div 9350 14.2 10.6 134 10.4 10.5 99
Burgess Junction 7880 6.6 7.3 90 5.9 8.1 73
Dome Lake 8880 10.8 7.6 142 8.3 9.0 92
Little Goose 8870 6.4 -M * 8.5 -M *
Sucker Creek 8880 7.3 7.8 94 -M 9.5 *
Tie Creek 6870 3.0 3.8 79 6.3 7.6 83
----- -----
Basin Index (%) 111 86
BELLE FOURCHE
Cole Canyon 5910 5.1 4.3 119 7.0 6.5 108
----- -----
Basin Index (%) 119 108
CHEYENNE RIVER BASIN
Blind Park 6890 6.4 5.5 116 8.7 8.4 104
North Rapid Creek 6130 5.8 5.2 112 6.2 6.9 90
----- -----
Basin Index (%) 114 97
UPPER N. PLATTE
Arapaho Ridge 10960 14.4 14.5 99 14.4 15.8 91
Blackhall Mtn 9820 18.4 -M * 18.4 -M *
Columbine 9160 15.3 16.9 91 17.4 18.2 96
Divide Peak 8880 9.0 13.9 65 12.5 15.1 83
Joe Wright 10120 12.1 14.1 86 20.6 17.7 116
Laprele Creek 8375 4.6 6.3 73 6.0 8.3 72
Med Bow 10500 29.2 -M * 24.4 -M *
North French Creek 10130 19.1 18.6 103 19.3 18.7 103
Never Summer 10280 13.0 13.8 94 10.8 -M *
Old Battle 10000 17.1 21.5 80 16.6 24.9 67
Rawah 9020 8.2 7.2 114 11.3 9.7 116
Sage Creek Basin 7850 6.2 9.3 67 7.4 10.8 69
Sand Lake 10050 18.3 18.2 101 15.2 16.7 91
South Brush Creek 8440 6.4 8.0 80 8.1 10.4 78
Tower 10500 23.8 31.7 75 22.8 28.3 81
Webber Springs 9250 12.5 16.2 77 14.9 18.7 80
Willow Creek Pass 9540 9.8 8.4 117 10.5 9.1 115
Zirkel 9340 17.6 20.4 86 22.2 21.0 106
----- -----
Basin Index (%) 87 90
SWEETWATER
Deer Park 9700 7.7 9.6 80 10.0 13.6 74
Larsen Creek 9000 7.2 8.3 87 7.9 -M *
South Pass 9040 7.8 10.0 78 -M 11.9 *
----- -----
Basin Index (%) 81 74*
LOWER N. PLATTE
Casper Mtn. 7900 5.6 8.5 66 4.3 9.9 43
Laprele Creek 8375 4.6 6.3 73 6.0 8.3 72
Reno Hill 8400 6.9 8.5 81 8.0 9.9 81
Windy Peak 7900 4.2 4.9 86 5.8 7.0 83
----- -----
Basin Index (%) 76 69
LARAMIE RIVER
Brooklyn Lake 10240 17.6 13.5 130 18.3 14.2 129
Cinnabar Park 9574 16.8 15.3 110 19.1 17.8 107
Crow Creek 8330 2.1 6.1 34 7.5 7.0 107
Deadman Hill 10220 14.1 11.2 126 13.7 11.3 121
Rawah 9020 8.2 7.2 114 11.3 9.7 116
Roach 9700 10.2 11.2 91 12.9 13.0 99
----- -----
Basin Index (%) 107 113
S. PLATTE
Black Mountain 8920 6.6 -M * 9.2 -M *
Crow Creek 8330 2.1 6.1 34 7.5 7.0 107
Deadman Hill 10220 14.1 11.2 126 13.7 11.3 121
----- -----
Basin Index (%) 94 116
LITTLE SNAKE RIVER
Battle Mountain 7440 3.5 8.3 42 6.6 10.8 61
Divide Peak 8880 9.0 13.9 65 12.5 15.1 83
Elk River 8700 9.8 13.3 74 10.9 14.2 77
Little Snake River 8915 14.2 17.8 80 19.3 22.8 85
Old Battle 10000 17.1 21.5 80 16.6 24.9 67
Sage Creek Basin 7850 6.2 9.3 67 7.4 10.8 69
Sandstone RS 8150 5.6 9.5 59 5.6 13.4 42
Whiskey Park 8950 15.1 18.5 82 17.6 20.0 88
----- -----
Basin Index (%) 72 73
UPPER GREEN RIVER
Big Sandy Opening 9080 8.8 8.8 100 8.7 9.2 95
Blind Bull Sum 8650 23.5 15.7 150 14.3 14.2 101
East Rim Divide 7930 8.4 7.2 117 8.5 8.4 101
Elkhart Park G.S. 9400 8.8 8.3 106 8.3 9.3 89
Gros Ventre Summit 8750 9.6 8.9 108 9.6 8.9 108
Gunsight Pass 9820 11.1 9.2 121 11.2 9.8 114
Kendall R.S. 7740 10.3 8.7 118 11.0 10.2 108
Loomis Park 8240 11.7 10.5 111 12.6 12.3 102
New Fork Lake 8340 8.5 7.4 115 7.7 7.7 100
Pocket Creek 9360 6.1 -M * 5.8 -M *
Snider Basin 8060 8.8 8.8 100 10.7 10.2 105
Spring Creek Divide 9000 18.1 16.2 112 17.5 17.1 102
Triple Peak 8500 20.2 15.3 132 22.1 17.7 125
----- -----
Basin Index (%) 118 105
LOWER GREEN RIVER
Blacks Fork Jct 8869 4.7 -M * 6.1 -M *
Buck Pasture 9632 7.6 -M * 8.6 -M *
EF Blacks Fork GS 9360 5.5 -M * -M -M *
Hams Fork 7840 5.5 8.2 67 6.0 8.1 74
Hewinta 9500 4.7 6.8 69 7.6 9.6 79
Hickerson Park 9122 4.5 4.8 94 3.8 6.8 56
Hole-in-Rock 9168 3.9 4.6 85 4.4 6.3 70
Indian Creek 9425 14.0 16.2 86 10.2 15.6 65
Kelley R.S. 8180 8.2 10.1 81 9.4 12.8 73
Spirit Lk 10235 5.1 -M * 5.6 -M *
Steel Creek Park 10158 8.9 10.0 89 9.2 11.0 84
----- -----
Basin Index (%) 82 72
UPPER BEAR RIVER
Bear River RS 8777 5.7 -M * 7.2 -M *
Bug Lake 7987 9.8 12.8 77 10.6 13.7 77
Burts Miller Ranch 8000 3.7 -M * 4.4 -M *
Chalk Creek #1 9171 9.3 15.5 60 10.8 17.3 62
Hayden Fork 9130 8.2 10.3 80 10.5 14.5 72
Kelley R.S. 8180 8.2 10.1 81 9.4 12.8 73
Lily Lake 9133 6.9 8.6 80 7.5 11.8 64
Monte Cristo 8932 12.6 18.2 69 12.9 18.0 72
Salt River Summit 7640 6.6 9.0 73 8.5 11.8 72
----- -----
Basin Index (%) 73 70
-----------------------------------------------------------------------------
-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.
----------------------------------------------------------------------------
-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.