The program installation contains a typical hydrologic budget problem which you would solve with the SPAW and POND programs.
Lets load the program and move through an example solution.
Begin by removing or renaming any previous SPAW file and material. You may be able to use some of this information later, but initially version 5 utilizes its own file naming and structuring system and may become confused if it encounters old version materials. A field is the unit of land for which a water budget simulation is made, but these are filed by multiple farms each which may have multiple fields. This is the main screen for a single field hydrolgic budget. The model will assemble run files and the dates of simulation will scroll on the screen as the computations are made.