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: MARCH 12 , 2019
------------------------------------------------------------------------------
BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
------------------------------------------------------------------------------
WYOMING
SNAKE RIVER
Base Camp 7060 18.1 13.8 131 20.2 18.3 110
Black Bear 8170 40.5 31.6 128 39.6 33.3 119
Blind Bull Sum 8650 21.0 19.6 107 16.9 17.0 99
Cottonwood Creek 7670 19.0 18.6 102 22.2 20.9 106
East Rim Divide 7930 10.2 9.5 107 10.4 10.2 102
Grand Targhee 9260 38.6 32.1 120 29.0 25.7 113
Granite Creek 6770 18.6 14.7 127 19.2 17.6 109
Grassy Lake 7265 31.3 27.7 113 34.4 31.4 110
Gros Ventre Summit 8750 8.7 10.9 80 10.8 11.0 98
Gunsight Pass 9820 12.1 11.6 104 14.0 11.7 120
Lewis Lake Divide 7850 32.7 26.7 122 30.8 30.9 100
Phillips Bench 8200 27.2 21.4 127 22.6 24.3 93
Salt River Summit 7640 12.2 11.3 108 13.9 14.3 97
Snake River Station 6920 19.8 15.2 130 24.0 19.7 122
Spring Creek Divide 9000 20.8 19.7 106 21.3 20.5 104
Thumb Divide 7980 17.4 13.3 131 16.3 15.8 103
Togwotee Pass 9580 22.0 19.6 112 22.6 20.8 109
Two Ocean Plateau 9240 27.7 23.2 119 21.9 23.4 94
Willow Creek 8080 27.4 24.2 113 30.5 28.7 106
Younts Peak 8350 -M 12.4 * -M 13.5 *
----- -----
Basin Index (%) 117 106
MADISON-GALLATIN
Black Bear 8170 40.5 31.6 128 39.6 33.3 119
Canyon 7870 12.6 11.5 110 14.4 14.0 103
Madison Plateau 7750 26.3 19.4 136 25.4 22.9 111
West Yellowstone 6700 14.2 9.8 145 15.9 12.4 128
Whiskey Creek 6800 18.3 13.3 138 18.8 17.5 107
----- -----
Basin Index (%) 131 114
YELLOWSTONE
Beartooth Lake 9360 18.4 18.4 100 17.1 16.9 101
Burnt Mtn 5880 7.8 4.3 181 12.0 10.2 118
Canyon 7870 12.6 11.5 110 14.4 14.0 103
Cole Creek 7850 14.0 11.3 124 -M 10.0 *
Evening Star 9200 23.8 21.1 113 25.7 23.5 109
Fisher Creek 9100 28.2 27.2 104 30.9 27.4 113
Northeast Entrance 7350 10.1 8.7 116 12.2 10.5 116
Parker Peak 9400 -M 16.8 * -M 15.0 *
Sylvan Lake 8420 19.3 17.1 113 24.6 19.1 129
Thumb Divide 7980 17.4 13.3 131 16.3 15.8 103
Two Ocean Plateau 9240 27.7 23.2 119 21.9 23.4 94
White Mill 8700 20.0 19.3 104 17.5 20.3 86
Wolverine 7650 11.8 9.0 131 11.6 10.5 110
Younts Peak 8350 -M 12.4 * -M 13.5 *
----- -----
Basin Index (%) 114 107
WIND RIVER
Burroughs Creek 8750 9.8 -M * 11.7 -M *
Castle Creek 8400 3.8 -M * 5.1 -M *
Cold Springs 9630 5.9 6.0 98 6.3 8.1 78
Deer Park 9700 14.6 12.2 120 15.8 16.3 97
Hobbs Park 10100 12.2 11.0 111 9.2 10.4 88
Kirwin 9550 9.1 7.9 115 9.5 9.4 101
Little Warm 9370 7.8 8.8 89 7.6 10.6 72
Owl Creek 8975 4.5 4.4 102 5.0 4.6 109
South Pass 9040 12.2 12.6 97 10.4 14.6 71
St. Lawrence Alt 8620 3.8 5.9 64 7.1 7.1 100
Togwotee Pass 9580 22.0 19.6 112 22.6 20.8 109
Townsend Creek 8700 7.7 7.4 104 8.4 9.4 89
----- -----
Basin Index (%) 104 92
BIGHORN BASIN
Bald Mtn. 9380 14.9 16.0 93 10.9 14.0 78
Bear Trap Meadow 8200 7.3 4.7 155 6.3 6.6 95
Bone Springs Div 9350 11.5 13.3 86 10.0 12.6 79
Grave Springs 8550 6.8 7.5 91 7.8 8.4 93
Kirwin 9550 9.1 7.9 115 9.5 9.4 101
Marquette 8760 6.2 -M * 7.6 -M *
Middle Powder 7760 8.1 8.9 91 4.4 9.4 47
Owl Creek 8975 4.5 4.4 102 5.0 4.6 109
Powder River Pass 9480 8.9 8.6 103 8.3 10.2 81
Shell Creek 9580 12.0 12.3 98 10.2 11.2 91
Timber Creek 7950 3.3 4.1 80 5.1 5.6 91
----- -----
Basin Index (%) 99 84
SHOSHONE RIVER
Blackwater 9780 21.4 19.2 111 21.6 17.3 125
Evening Star 9200 23.8 21.1 113 25.7 23.5 109
Marquette 8760 6.2 -M * 7.6 -M *
Sylvan Lake 8420 19.3 17.1 113 24.6 19.1 129
Sylvan Road 7120 11.7 10.0 117 15.0 14.6 103
Younts Peak 8350 -M 12.4 * -M 13.5 *
----- -----
Basin Index (%) 113 117
POWDER RIVER
Bear Trap Meadow 8200 7.3 4.7 155 6.3 6.6 95
Cloud Peak Reservoir 9860 10.0 11.9 84 8.8 10.4 85
Grave Springs 8550 6.8 7.5 91 7.8 8.4 93
Hansen Sawmill 8360 4.7 5.2 90 6.3 6.6 95
Middle Powder 7760 8.1 8.9 91 4.4 9.4 47
Powder River Pass 9480 8.9 8.6 103 8.3 10.2 81
Soldier Park 8720 3.4 -M * 5.9 -M *
----- -----
Basin Index (%) 98 81
TONGUE RIVER
Big Goose 7990 6.6 7.0 94 8.4 8.5 99
Bone Springs Div 9350 11.5 13.3 86 10.0 12.6 79
Burgess Junction 7880 7.0 9.3 75 7.5 9.8 77
Dome Lake 8880 7.4 9.4 79 6.7 10.7 63
Little Goose 8870 7.7 -M * 6.5 -M *
Sucker Creek 8880 9.0 10.2 88 8.3 11.4 73
Tie Creek 6870 4.1 4.7 87 8.4 9.0 93
----- -----
Basin Index (%) 85 80
BELLE FOURCHE
Blind Park 6890 7.5 6.9 109 6.5 10.1 64
Cole Canyon 5910 5.9 5.1 116 9.8 7.4 132
----- -----
Basin Index (%) 112 93
CHEYENNE RIVER BASIN
Blind Park 6890 7.5 6.9 109 6.5 10.1 64
North Rapid Creek 6130 6.1 6.3 97 5.9 8.1 73
----- -----
Basin Index (%) 103 68
UPPER N. PLATTE
Arapaho Ridge 10960 22.6 17.8 127 22.7 18.9 120
Blackhall Mtn 9820 29.0 -M * 30.0 -M *
Columbine 9160 27.2 21.2 128 26.2 21.9 120
Divide Peak 8880 18.1 17.0 106 20.5 18.1 113
Joe Wright 10120 19.5 18.5 105 27.0 21.6 125
Laprele Creek 8375 10.4 8.6 121 11.0 10.2 108
Med Bow 10500 33.3 -M * 30.4 -M *
Never Summer 10280 19.8 17.1 116 16.6 -M *
North French Creek 10130 26.6 23.3 114 26.5 22.6 117
Old Battle 10000 32.7 25.7 127 31.1 30.0 104
Rawah 9020 12.6 9.3 135 15.2 11.6 131
Sage Creek Basin 7850 16.2 11.7 138 15.7 12.5 126
Sand Lake 10050 24.9 22.8 109 21.1 20.5 103
South Brush Creek 8440 10.1 11.2 90 10.6 12.6 84
Tower 10500 48.3 38.4 126 -M 34.1 *
Webber Springs 9250 23.6 20.2 117 27.6 22.8 121
Whiskey Park 8950 28.4 23.5 121 30.2 24.0 126
Willow Creek Pass 9540 13.7 10.3 133 15.1 11.1 136
Zirkel 9340 31.5 25.3 125 31.3 24.7 127
----- -----
Basin Index (%) 120 117
SWEETWATER
Deer Park 9700 14.6 12.2 120 15.8 16.3 97
Larsen Creek 9000 10.7 10.5 102 13.5 -M *
South Pass 9040 12.2 12.6 97 10.4 14.6 71
----- -----
Basin Index (%) 106 85
LOWER N. PLATTE
Casper Mtn. 7900 11.5 11.6 99 9.5 12.1 79
Laprele Creek 8375 10.4 8.6 121 11.0 10.2 108
Reno Hill 8400 12.2 11.3 108 13.1 12.2 107
Windy Peak 7900 8.1 6.6 123 8.7 8.6 101
----- -----
Basin Index (%) 111 98
LARAMIE RIVER
Brooklyn Lake 10240 21.2 17.0 125 22.2 17.5 127
Cinnabar Park 9574 18.9 17.8 106 21.0 20.7 101
Crow Creek 8330 4.4 7.1 62 8.3 8.5 98
Deadman Hill 10220 17.8 13.1 136 16.5 14.1 117
Rawah 9020 12.6 9.3 135 15.2 11.6 131
Roach 9700 15.6 13.5 116 18.9 16.0 118
Windy Peak 7900 8.1 6.6 123 8.7 8.6 101
----- -----
Basin Index (%) 117 114
S. PLATTE
Black Mountain 8920 9.2 -M * 10.0 -M *
Crow Creek 8330 4.4 7.1 62 8.3 8.5 98
Deadman Hill 10220 17.8 13.1 136 16.5 14.1 117
----- -----
Basin Index (%) 110 110
LITTLE SNAKE RIVER
Battle Mountain 7440 12.8 10.7 120 15.1 13.0 116
Divide Peak 8880 18.1 17.0 106 20.5 18.1 113
Elk River 8700 19.3 17.0 114 17.7 17.2 103
Little Snake River 8915 27.4 20.3 135 35.0 26.0 135
Old Battle 10000 32.7 25.7 127 31.1 30.0 104
Sage Creek Basin 7850 16.2 11.7 138 15.7 12.5 126
Sandstone RS 8150 16.6 11.8 141 17.2 16.0 108
Whiskey Park 8950 28.4 23.5 121 30.2 24.0 126
----- -----
Basin Index (%) 125 116
UPPER GREEN RIVER
Big Sandy Opening 9080 12.7 10.8 118 13.4 11.3 119
Blind Bull Sum 8650 21.0 19.6 107 16.9 17.0 99
East Rim Divide 7930 10.2 9.5 107 10.4 10.2 102
Elkhart Park G.S. 9400 11.6 10.2 114 12.3 11.3 109
Gros Ventre Summit 8750 8.7 10.9 80 10.8 11.0 98
Gunsight Pass 9820 12.1 11.6 104 14.0 11.7 120
Indian Creek 9425 19.7 20.4 97 15.7 19.1 82
Kendall R.S. 7740 10.7 10.6 101 11.1 12.5 89
Loomis Park 8240 15.0 12.8 117 15.7 15.0 105
New Fork Lake 8340 9.2 9.1 101 8.5 9.4 90
Pocket Creek 9360 13.2 -M * 13.9 -M *
Snyder Basin 8060 10.8 10.7 101 12.5 12.2 102
Spring Creek Divide 9000 20.8 19.7 106 21.3 20.5 104
Triple Peak 8500 21.0 18.7 112 22.9 21.6 106
----- -----
Basin Index (%) 105 101
LOWER GREEN RIVER
Blacks Fork Jct 8869 8.1 -M * 11.1 -M *
Buck Pasture 9632 13.5 -M * 16.2 -M *
EF Blacks Fork GS 9360 10.8 -M * 9.0 -M *
Hams Fork 7840 9.8 10.0 98 10.1 9.7 104
Hewinta 9500 10.1 8.7 116 12.4 11.6 107
Hickerson Park 9122 7.0 6.5 108 9.1 8.2 111
Hole-in-Rock 9168 5.8 6.2 94 8.7 7.7 113
Indian Creek 9425 19.7 20.4 97 15.7 19.1 82
Kelley R.S. 8180 12.8 12.8 100 13.3 15.5 86
Spirit Lk 10235 13.4 -M * 13.7 -M *
Steel Creek Park 10158 13.1 12.7 103 15.4 13.4 115
----- -----
Basin Index (%) 101 99
UPPER BEAR RIVER
Bear River RS 8777 10.2 -M * 12.9 -M *
Bug Lake 7987 20.8 16.3 128 20.6 16.6 124
Burts Miller Ranch 8000 7.0 -M * 7.4 -M *
Chalk Creek #1 9171 22.1 20.2 109 25.9 21.0 123
Hayden Fork 9130 16.3 13.6 120 20.8 17.6 118
Kelley R.S. 8180 12.8 12.8 100 13.3 15.5 86
Lily Lake 9133 10.9 11.2 97 14.1 14.3 99
Monte Cristo 8932 28.4 23.0 123 -M 22.0 *
Salt River Summit 7640 12.2 11.3 108 13.9 14.3 97
Spring Creek Divide 9000 20.8 19.7 106 21.3 20.5 104
----- -----
Basin Index (%) 113 108
-----------------------------------------------------------------------------
-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.