There are two types of data objects in SWMM 5 to describe the Groundwater flow component. There is a Groundwater data object associated with a Subcatchment that describes flow equations, the interaction between the Subcatchment infiltration and the Groundwater component and an Aquifer data object that describes the characteristics of the Aquifer that may span one or more Subcatchments. The Groundwater data is specific to one Subcatchment but the Aquifer may extend over more than one Subcatchment.
