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.

Empire Waterway
   Survey title Survey date
       Sheet Name    River mile PDF XYZ SHP
   Sh. 1 - Empire Floodgate 09/14/2016
       EM_01_EFG     PDF XYZ Shape
   Sh. 2 - Bay 09/14/2016
       EM_02_BAY     PDF XYZ Shape
   Sh. 3 - Bay 09/14/2016
       EM_03_BAY     PDF XYZ Shape
   Sh. 4 - Bay 09/14/2016
       EM_04_BAY     PDF XYZ Shape
   Sh. 5 - Bar 09/14/2016
       EM_05_BAR     PDF XYZ Shape
   Sh. 6 - Bar 09/14/2016
       EM_06_BAR     PDF XYZ Shape