The HYDMOD package is used to define specified locations at which data will be written to a binary file at every time stp of a simulation. A separate program, hydfmt.exe, which is distributed with MODFLOW-2005 can be used to convert the binary data to normal text. The pane for this package is on the MODFLOW Packages and Programs dialog box under Output.
The only information specified on the HYDMOD pane is HYDNOH which is the value that will be saved to file if a value for a specified location can not be determined.
The output file for HYDMOD will have the extension ."hyd_out." A typical hydfmt is illustrated below. It is a good idea to use a root for the HYDFMT output that is different from the root for the model or some of the output files may overwrite input files for the model.
