Tennessee Landforms -- sinkholes
WGS84
36.039630 -85.387970
36° 2.378'N 85° 23.278'W
36° 2' 22.7"N 85° 23' 16.7"W
16S 645222E 3989546N
convert to NAD27

Big Sink 261'

Waypoint: WHS001 36.039630,-85.387970
County: White   landforms of White county
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Remarks:

Tennessee's deepest sinkhole, see 10m DEM elevations on topo map with additional metrics for lowest point and lip.

from sinkhole digital analysis
ID: 12719
weighted centroid: 36.03961349310,-85.39035723950
Area: 0.66 km2
Perimeter: 4.1 km, boundary
Depth: 79.4 m (260.5')
Volume: 3113525 m3

In 2017, online NED DEM grid search shows low point of 1427.53' at 36.039815,-85.387970. 2016 TN LiDAR survey shows low points at

36.039480,-85.387902,1426.22'
36.039473,-85.387894,1426.22'
With spill point (1688.93') at 36.03879,-85.38542, the depth is 262.7'
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   © Tom Dunigan