Option

Description

Reporting Time Step

Enter the time interval for reporting of computed results.

Runoff - Dry Weather Time Step

Enter the time step length used for runoff computations, consisting essentially of pollutant buildup, during periods when there is no rainfall and no ponded water. This must be greater or equal to the Wet Weather time step.

Runoff - Wet Weather Time Step

Enter the time step length used to compute runoff from subcatchments during periods of rainfall, or when ponded water still remains on the surface.

Routing Time Step

Enter the time step length used for routing flows and water quality constituents through the conveyance system. Note that Dynamic Wave routing requires a much smaller time step than the other methods of flow routing.