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.

Upper Calcasieu Ship Channel
   Survey title Survey date
       Sheet Name    River Mile PDF XYZ SHP
   Sheet 1 07/19/2017
       CR_01_UPR    MM 35 to 36 PDF XYZ Shape
   Sheet 2 07/19/2017
       CR_02_UPR    MM 33 to 34 PDF XYZ Shape
   Sheet 3 07/19/2017
       CR_03_UPR    MM 32 PDF XYZ Shape
   Sheet 4 07/20/2017
       CR_04_UPR    MM 30 to 31 PDF XYZ Shape
   Sheet 5 07/20/2017
       CR_05_UPR    MM 29 PDF XYZ Shape
   Sheet 6 07/20/2017
       CR_06_UPR    MM 27 to 28 PDF XYZ Shape
   Sheet 7 07/20/2017
       CR_07_UPR    MM 26 to 27 PDF XYZ Shape
   Sheet 8 07/20/2017
       CR_08_UPR    MM 25 PDF XYZ Shape
   Sheet 9 07/06/2017
       CR_09_UPR    MM 23 to 24 PDF XYZ Shape
   Sheet 10 07/06/2017
       CR_10_UPR    MM 22 to 23 PDF XYZ Shape
   Devil's Elbow - Sheet 50 07/06/2017
       CR_50_DE1     PDF XYZ Shape
   Devil's Elbow - Sheet 51 07/06/2017
       CR_51_DE2     PDF XYZ Shape
   Clooney Island - Sheet 52 07/19/2017
       CR_52_CLI     PDF XYZ Shape
   Coon Island - Sheet 53 07/19/2017
       CR_53_CNI     PDF XYZ Shape