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 SUNDAY: FEBRUARY 16 , 2020
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 12.4 12.7 98 12.9 15.6 83
Black Bear 8170 25.3 27.2 93 23.8 27.9 85
Blind Bull Sum 8650 19.4 16.1 120 11.5 14.5 79
Cottonwood Creek 7670 21.1 14.8 143 22.2 17.7 125
East Rim Divide 7930 9.5 7.3 130 7.5 8.5 88
Grand Targhee 9260 30.8 26.6 116 21.6 23.3 93
Granite Creek 6770 12.4 12.4 100 12.0 15.1 79
Grassy Lake 7265 24.1 24.1 100 24.1 27.0 89
Gros Ventre Summit 8750 8.4 8.9 94 8.3 9.1 91
Gunsight Pass 9820 9.8 9.5 103 9.8 10.0 98
Lewis Lake Divide 7850 18.8 23.2 81 21.9 26.1 84
Phillips Bench 8200 21.4 17.9 120 20.8 20.5 101
Salt River Summit 7640 11.9 9.3 128 12.1 12.1 100
Snake River Station 6920 12.8 13.1 98 15.1 17.2 88
Spring Creek Divide 9000 20.4 16.4 124 19.5 17.4 112
Thumb Divide 7980 10.8 10.7 101 10.9 13.3 82
Togwotee Pass 9580 19.8 16.5 120 18.8 17.7 106
Two Ocean Plateau 9240 21.7 19.5 111 17.0 19.6 87
Willow Creek 8080 27.0 19.6 138 27.0 24.2 112
Younts Peak 8350 13.0 10.9 119 10.6 11.6 91
----- -----
Basin Index (%) 111 94
MADISON-GALLATIN
Black Bear 8170 25.3 27.2 93 23.8 27.9 85
Canyon 7870 10.5 9.4 112 10.7 12.0 89
Madison Plateau 7750 15.8 15.7 101 11.5 19.1 60
West Yellowstone 6700 8.6 7.7 112 7.3 10.7 68
Whiskey Creek 6800 11.4 10.8 106 13.0 14.8 88
----- -----
Basin Index (%) 101 78
YELLOWSTONE
Beartooth Lake 9360 16.8 15.4 109 15.4 14.4 107
Burnt Mtn 5880 4.8 3.5 137 9.7 8.7 111
Canyon 7870 10.5 9.4 112 10.7 12.0 89
Cole Creek 7850 13.7 8.9 154 10.2 8.4 121
Evening Star 9200 20.5 17.7 116 22.1 20.2 109
Fisher Creek 9100 23.8 23.3 102 24.3 23.2 105
Northeast Entrance 7350 8.4 7.4 114 9.4 9.2 102
Parker Peak 9400 19.4 14.1 138 17.2 12.7 135
Sylvan Lake 8420 15.6 14.2 110 17.4 16.4 106
Thumb Divide 7980 10.8 10.7 101 10.9 13.3 82
Two Ocean Plateau 9240 21.7 19.5 111 17.0 19.6 87
White Mill 8700 19.4 16.3 119 15.8 17.3 91
Wolverine 7650 10.8 7.9 137 10.2 9.1 112
Younts Peak 8350 13.0 10.9 119 10.6 11.6 91
----- -----
Basin Index (%) 117 102
WIND RIVER
Burroughs Creek 8750 8.6 -M * 9.8 -M *
Castle Creek 8400 3.8 -M * 4.5 -M *
Cold Springs 9630 5.7 5.1 112 5.4 6.8 79
Deer Park 9700 9.1 9.8 93 8.1 14.0 58
Hobbs Park 10100 9.3 8.6 108 8.0 8.6 93
Kirwin 9550 8.4 6.2 135 7.2 8.0 90
Little Warm 9370 8.3 7.3 114 6.7 9.0 74
Owl Creek 8975 4.8 3.3 145 5.0 3.9 128
South Pass 9040 8.2 10.2 80 7.3 12.2 60
St. Lawrence Alt 8620 3.8 4.6 83 5.2 5.9 88
Togwotee Pass 9580 19.8 16.5 120 18.8 17.7 106
Townsend Creek 8700 6.8 5.8 117 7.0 7.9 89
----- -----
Basin Index (%) 109 84
BIGHORN BASIN
Bald Mtn. 9380 16.7 13.0 128 12.8 11.8 108
Bear Trap Meadow 8200 -M 3.8 * 7.5 5.6 134
Bone Springs Div 9350 13.2 10.8 122 11.0 10.6 104
Grave Springs 8550 8.4 5.6 150 8.8 7.2 122
Kirwin 9550 8.4 6.2 135 7.2 8.0 90
Marquette 8760 5.3 -M * 6.6 -M *
Middle Powder 7760 9.9 7.1 139 10.0 8.0 125
Owl Creek 8975 4.8 3.3 145 5.0 3.9 128
Powder River Pass 9480 9.7 7.2 135 9.5 8.7 109
Shell Creek 9580 11.2 10.1 111 10.9 9.7 112
Timber Creek 7950 4.9 3.1 158 5.4 4.8 112
----- -----
Basin Index (%) 131 113
SHOSHONE RIVER
Blackwater 9780 16.3 15.6 104 16.2 14.7 110
Evening Star 9200 20.5 17.7 116 22.1 20.2 109
Marquette 8760 5.3 -M * 6.6 -M *
Sylvan Lake 8420 15.6 14.2 110 17.4 16.4 106
Sylvan Road 7120 9.4 8.7 108 13.2 13.0 102
Younts Peak 8350 13.0 10.9 119 10.6 11.6 91
----- -----
Basin Index (%) 111 105
POWDER RIVER
Bear Trap Meadow 8200 -M 3.8 * 7.5 5.6 134
Cloud Peak Reservoir 9860 10.3 9.6 107 9.7 8.7 111
Grave Springs 8550 8.4 5.6 150 8.8 7.2 122
Hansen Sawmill 8360 5.4 4.3 126 6.4 5.5 116
Middle Powder 7760 9.9 7.1 139 10.0 8.0 125
Powder River Pass 9480 9.7 7.2 135 9.5 8.7 109
Soldier Park 8720 3.9 -M * 6.4 -M *
----- -----
Basin Index (%) 129 119
TONGUE RIVER
Big Goose 7990 6.5 5.7 114 7.8 7.3 107
Bone Springs Div 9350 13.2 10.8 122 11.0 10.6 104
Burgess Junction 7880 8.8 7.4 119 9.8 8.2 120
Dome Lake 8880 9.1 7.8 117 7.1 9.2 77
Little Goose 8870 7.7 -M * 6.1 -M *
Sucker Creek 8880 10.7 8.0 134 9.5 9.6 99
Tie Creek 6870 7.0 3.9 179 10.4 7.8 133
----- -----
Basin Index (%) 127 106
BELLE FOURCHE
Blind Park 6890 6.2 5.6 111 6.7 8.5 79
Cole Canyon 5910 2.3 4.5 51 -M 6.5 *
----- -----
Basin Index (%) 84 79
CHEYENNE RIVER BASIN
Blind Park 6890 6.2 5.6 111 6.7 8.5 79
North Rapid Creek 6130 5.7 5.3 108 6.7 7.0 96
----- -----
Basin Index (%) 109 86
UPPER N. PLATTE
Arapaho Ridge 10960 16.7 14.7 114 16.3 16.1 101
Blackhall Mtn 9820 21.9 -M * 21.6 -M *
Columbine 9160 23.5 17.3 136 22.2 18.5 120
Divide Peak 8880 16.6 14.0 119 17.2 15.4 112
Joe Wright 10120 15.0 14.6 103 19.7 18.0 109
Laprele Creek 8375 9.2 6.6 139 9.3 8.4 111
Med Bow 10500 33.8 -M * 27.3 -M *
Never Summer 10280 14.9 14.1 106 11.0 -M *
North French Creek 10130 26.5 19.1 139 25.3 19.0 133
Old Battle 10000 23.9 22.0 109 21.8 25.5 85
Rawah 9020 10.2 7.4 138 11.6 9.9 117
Sage Creek Basin 7850 12.7 9.6 132 10.3 10.9 94
Sand Lake 10050 22.4 18.5 121 20.7 17.0 122
South Brush Creek 8440 10.6 8.4 126 10.7 10.6 101
Tower 10500 34.0 32.4 105 29.7 28.8 103
Webber Springs 9250 16.6 16.6 100 18.1 19.1 95
Whiskey Park 8950 25.9 19.1 136 24.9 20.4 122
Willow Creek Pass 9540 10.0 8.5 118 9.4 9.3 101
Zirkel 9340 21.9 20.8 105 24.2 21.3 114
----- -----
Basin Index (%) 118 109
SWEETWATER
Deer Park 9700 9.1 9.8 93 8.1 14.0 58
Larsen Creek 9000 -M 8.5 * 5.7 -M *
South Pass 9040 8.2 10.2 80 7.3 12.2 60
----- -----
Basin Index (%) 86 59
LOWER N. PLATTE
Casper Mtn. 7900 12.8 8.8 145 8.7 10.1 86
Laprele Creek 8375 9.2 6.6 139 9.3 8.4 111
Reno Hill 8400 12.6 8.8 143 12.7 10.1 126
Windy Peak 7900 7.3 5.1 143 6.0 7.1 85
----- -----
Basin Index (%) 143 103
LARAMIE RIVER
Brooklyn Lake 10240 20.5 13.8 149 19.7 14.5 136
Cinnabar Park 9574 18.8 15.8 119 20.0 18.1 110
Crow Creek 8330 7.0 6.3 111 8.8 7.1 124
Deadman Hill 10220 13.8 11.4 121 12.1 11.5 105
Rawah 9020 10.2 7.4 138 11.6 9.9 117
Roach 9700 11.3 11.5 98 11.0 13.3 83
Windy Peak 7900 7.3 5.1 143 6.0 7.1 85
----- -----
Basin Index (%) 125 109
S. PLATTE
Black Mountain 8920 8.6 -M * 10.3 -M *
Crow Creek 8330 7.0 6.3 111 8.8 7.1 124
Deadman Hill 10220 13.8 11.4 121 12.1 11.5 105
----- -----
Basin Index (%) 118 112
LITTLE SNAKE RIVER
Battle Mountain 7440 11.7 8.6 136 11.7 11.0 106
Divide Peak 8880 16.6 14.0 119 17.2 15.4 112
Elk River 8700 16.6 13.7 121 13.7 14.5 94
Little Snake River 8915 21.6 18.2 119 26.0 23.1 113
Old Battle 10000 23.9 22.0 109 21.8 25.5 85
Sage Creek Basin 7850 12.7 9.6 132 10.3 10.9 94
Sandstone RS 8150 13.6 9.8 139 12.5 13.6 92
Whiskey Park 8950 25.9 19.1 136 24.9 20.4 122
----- -----
Basin Index (%) 124 103
UPPER GREEN RIVER
Big Sandy Opening 9080 7.0 9.0 78 6.0 9.3 65
Blind Bull Sum 8650 19.4 16.1 120 11.5 14.5 79
East Rim Divide 7930 9.5 7.3 130 7.5 8.5 88
Elkhart Park G.S. 9400 8.2 8.5 96 7.7 9.4 82
Gros Ventre Summit 8750 8.4 8.9 94 8.3 9.1 91
Gunsight Pass 9820 9.8 9.5 103 9.8 10.0 98
Indian Creek 9425 17.6 16.5 107 12.6 16.0 79
Kendall R.S. 7740 8.0 8.9 90 8.0 10.4 77
Loomis Park 8240 11.1 10.5 106 13.6 12.6 108
New Fork Lake 8340 8.3 7.5 111 6.3 7.8 81
Pocket Creek 9360 -M -M * 5.8 -M *
Snider Basin 8060 10.9 8.9 122 11.3 10.4 109
Spring Creek Divide 9000 20.4 16.4 124 19.5 17.4 112
Triple Peak 8500 20.6 15.4 134 20.6 18.0 114
----- -----
Basin Index (%) 111 93
LOWER GREEN RIVER
Blacks Fork Jct 8869 6.0 -M * 9.2 -M *
Buck Pasture 9632 13.9 -M * 13.6 -M *
EF Blacks Fork GS 9360 11.6 -M * 7.6 -M *
Hams Fork 7840 10.1 8.3 122 9.0 8.2 110
Hewinta 9500 8.3 6.9 120 11.3 9.8 115
Hickerson Park 9122 8.4 5.0 168 8.9 6.9 129
Hole-in-Rock 9168 8.4 4.7 179 8.6 6.4 134
Indian Creek 9425 17.6 16.5 107 12.6 16.0 79
Kelley R.S. 8180 12.1 10.5 115 12.7 13.1 97
Spirit Lk 10235 13.0 -M * 13.8 -M *
Steel Creek Park 10158 11.3 10.2 111 13.9 11.2 124
----- -----
Basin Index (%) 123 108
UPPER BEAR RIVER
Bear River RS 8777 6.9 -M * 8.2 -M *
Bug Lake 7987 15.4 13.1 118 14.1 13.9 101
Burts Miller Ranch 8000 5.2 -M * 5.5 -M *
Chalk Creek #1 9171 15.0 15.9 94 13.8 17.6 78
Hayden Fork 9130 12.3 10.8 114 15.5 14.8 105
Kelley R.S. 8180 12.1 10.5 115 12.7 13.1 97
Lily Lake 9133 8.8 8.9 99 9.2 12.0 77
Monte Cristo 8932 21.5 18.7 115 19.0 18.3 104
Salt River Summit 7640 11.9 9.3 128 12.1 12.1 100
Spring Creek Divide 9000 20.4 16.4 124 19.5 17.4 112
----- -----
Basin Index (%) 113 97
-----------------------------------------------------------------------------
-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.