The maximum inundation depth (maxinundepth.63) file records the peak inundation depth (in meters) above ground that occurred during the simulation. The data are only recorded in areas that are initially dry according to the initiallydry.63 file. The values are -99999.0 if the area was never wet during the simulation.
The file contains two data sets. The first dataset contains the peak inundation value, and the second data set contains the time of occurrence of the peak inundation value in seconds since cold start.
See maxinundepth.63 file format for details.