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.

Morgan City Area
   Survey title Survey date
       Sheet Name    River Mile PDF XYZ SHP
Atchafalaya River
   Stout's Pass - Sh. 10 06/19/2017
       AS_10_S2M    MM 112.0 to 114.0 PDF XYZ Shape
   Stout's Pass - Sh. 9 06/19/2017
       AS_09_STP    MM 114.0 to 116.0 PDF XYZ Shape
   Stout's Pass - Sh. 8 06/19/2017
       AS_08_STP    MM 116.0 to 118.0 PDF XYZ Shape
   American Pass 06/26/2012
       AS_00_AMP     PDF XYZ Shape
   Berwick Harbor 07/20/2017
       AS_06_BER    MM 120.0 to 122.0 PDF XYZ Shape
   Berwick Lock Forebay 07/20/2017
       AS_00_BLF     PDF XYZ Shape
G.I.W.W.
   Bayou Boeuf/Morgan City Docks 07/21/2017
       GI_66_BBW    MM 93.0 to 94.8 PDF XYZ Shape
   20 Grand Point/Tidewater Point 07/21/2017
       GI_67_BBW    MM 94.8 96.0 PDF XYZ Shape
   Mile 99 07/21/2017
       GI_69_M99    MM 98.0 to 99.3 PDF XYZ Shape
   Wax Lake Outlet - Sh. 75 07/21/2017
       GI_75_WLO    MM 106.5.0 to 108.0 PDF XYZ Shape
   Wax Lake Outlet - Sh. 76 07/21/2017
       GI_76_WLO    MM 108.0 to 109.0 PDF XYZ Shape