Survey data is referenced to Louisiana South State Plane Coordinates North American Datum 1983 with soundings referenced below Mean Low Gulf in U.S. Survey Feet.

Bayou Lafourche
   Survey title Survey date
       Sheet Name    River mile PDF XYZ SHP
   Jetties/Bar - Sh. 1 07/13/2017
       LF_01_BAR    MM 0.0 to (-2.0) PDF XYZ Shape
   Port Fourchon - Sh. 2 07/13/2017
       LF_02_LWR    MM 2.5 to 0.0 PDF XYZ Shape
   Port Fourchon - Sh. 3 07/13/2017
       LF_03_LWR    MM 4.5 to 2.5 PDF XYZ Shape