Tennessee Landforms Google map right click to add draggable markers     iPhone map
marker:
Enter street,city,state or zip code or lat,-lon (dd.ddd)
     (for lat/lon or UTM or NAD27 use this)
Distance buttons: click on map to make a track (right-click to add draggable markers)
this button will popup a window from which you can save the track as a file.gpx for uploading to your GPS.
   Plot track elevation profile -- google elevations (10m DEM) and area (acres)
   Plot track elevation profile -- courtesy of heywhatsthat.com (based on 30m SRTM)
Add TN county lines to map:

Tennessee's deepest sinkhole Big Sink
You can mouse over the two 10m DEM grid elements in the map above to see the low point (1427.53') in Big Sink and the "least upper bound" of 1688.93', yielding a depth of 261.4' for Tennessee's deepest sinkhole.

In 2013, Chuck Sutherland used ArcMap with Spatial Analyst to characterize Tennessee's sinkholes using 10m DEM data. ArcMap confirmed that this is Tenneessee's deepest sinkhole with a depth of 260.5'. TN 2017 LiDar data reports Big Sink low point of 1426.22' at 36.039480,-85.387902 for a depth of 262.7' with spill point (1688.93') at 36.03879,-85.38542. Other digital data (10m DEM) on this sinkhole:
   weighted centroid: 36.03961349310,-85.3903572395
   Area: 0.66 km2
   Perimeter: 4.08 km
   Depth: 79.4 m, boundary
   Volume: 3113525 m3
   Low: 435.1 m
   High: 514.4 m

(more info on Tennessee sinkholes).

Other Google maps     arches     falls     GSMNP     BSF     towers     AT shelters     Oak Ridge greenways

Tennessee landforms      GSMNP landforms      BSF landforms      AT shelters

visits since 1/1/10, Tom Dunigan TNlandforms.US