This model is a steady state model. The length of the single stress period is 20 years which corresponds to 631152000 seconds (20 years*365.25 days/year *24 hr/day*3600 sec/hr).
Select Model|MODFLOW Time... to display the MODFLOW Time dialog box (fig. 108). Enter 0 for the time of the Starting time of the first stress period and 631152000 for the Ending time. Set the Max first time step length to 631152000 as well so that Number of steps in the stress period is 1. Make sure the Drawdown reference check box is unchecked. Click OK to close the dialog box.
Figure 108. MODFLOW Time dialog box.
