The DELILAH minigrid survey data presented in the 3D-format data files contains the survey line number, x (cross-shore) , y (longshore) and z (depth relative to NGVD) coordinates in meters. Coordinates are relative to a pier-orthogonal system whose origin is located behind the dunes and along the FRF's south property boundary.
3D survey data files are ASCII files containing all profile lines surveyed during a single survey. The filenames include the survey date. For example, the file containing survey data collected on October 12, 1990 is labeled DE901012.3d.
Sample: 3D Minigrid Format line DE170 2901001 907 89.682 1282.351 2.837