I have a need to determine the coordinates at the centroid of the "deepest" point within an irregular polygon feature. I have done some researching and found that Zonal Geometry calculates the Thickness of a "zone" by determining the maximum interior distance from the perimeter of the "zone" In the documentation provided by ESRI on the "Geometry Type" parameter for Thickness https://desktop.arcgis.com/en/arcmap/10.3/tools/spatial-analyst-toolbox/h-how-zonal-geometry-works.htm, they have these diagrams:

Zonal Geometry Thickness Parameter Description

In the diagrams, they have depicted red circles with lines radiating from the center of a circle that has determined the "deepest" or "thickest" point within a polygon or raster zone value. I have a need to calculate the coordinates of the "deepest" point.

Can someone help me walk through a process to make this calculation?

  • gis.stackexchange.com/questions/147790/…
    – FelixIP
    Commented Jun 19, 2020 at 20:57
  • Thank you for this link. In one of the answers, a contributor references ET GeoWizards 12. I followed the link to find the tool and used the Miscellaneous > Maximum Inscribed Circle tool to output EXACTLY what I needed. This is an excellent toolset for novices who cannot code to create scripts in Arc.
    – Calebben
    Commented Jun 25, 2020 at 5:49

1 Answer 1


Use arcmap trail version its free now a days(stay home) Take Bathemetry raster data from different sources of Respective region GIS Data or Geo-portal of your Study Area https://www.gebco.net/data_and_products/gridded_bathymetry_data/

now go through arcgis exercise for depth Raster Analysis using that data


you will get end results in the form of points that will represent the depth


  • Thanks for the answer. I use "quotations" around "deepest" to describe a calculation to find the point furthest from a perimeter of a polygon. Deepest was used on some other posts I read and I am not trying to find the point with the lowest elevation.
    – Calebben
    Commented Jun 25, 2020 at 5:00

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