Survey data on PDFs is referenced to Louisiana South State Plane Coordinates North American Datum 1983 with soundings referenced below Low Water Reference Plane 2007 via N.A.V.D. gage in U.S. Survey Feet. XYZ files are in U.S. Survey feet referenced to N.A.V.D unless otherwise noted.

Mississippi River N.O. to Venice
   Survey title Survey date Survey date
       Sheet Name    River Mile Recon - Profile Only Full Survey
Mississippi River New Orleans to Venice
   Poydras 03/01/2016 05/10/2021
       MD_61_PYD    MM 86 to 84 PDF XYZ Shape PDF XYZ Shape
   12 Mile Point - Sh. 1 03/01/2016 03/01/2016
       MD_62_TW1    MM 84 to 82 PDF XYZ Shape PDF XYZ Shape
   Fort Jackson - Sh. 2 01/18/2019 05/15/2020
       MD_95_FJ2    MM 19 to 17 PDF XYZ Shape PDF XYZ Shape
   Boothville 01/18/2019 06/03/2020
       MD_96_BTV    MM 17 to 15 PDF XYZ Shape PDF XYZ Shape
   Venice 04/22/2021 03/03/2021
       MD_97_VEN    MM 15 to 13 PDF XYZ Shape PDF XYZ Shape