Modmain: Modmain is a graphical user interface for MODFLOW, the MODular three- dimensional, finite difference FLOW model developed by the United States Geological Survey (McDonald and Harbaugh, 1984). MODFLOW is a program designed to model ground water flow and heads (pressure and elevation) in confined and unconfined aquifer systems. In its basic form, MODFLOW can be difficult, or awkward to use. The modmain program module is designed to simplify data entry, model editing, and analysis of results.

The main interface is a simple menu driven GUI. Click for full size image
All the standard MODFLOW input can be input using simple pop-up dialogs, or .... Click for full size image
... mouse editable grids. On the grids, cell values can be displayed, as well as indicators for special cell properties. Here no-flow cells are not displayed, and river cells are indicated with a blue dot. Click for full size image
After a model has been run, the results can be displayed using aby of UNCERT's other visualization tools. Click for full size image

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