SWMM - Rainfall Dependent Inflow

• Unit Hydrograph - The Unit Hydrographs in the group are used in combination with the rain gauge assigned to the group to develop a time series of RDII inflows per unit area over the simulation period
• Sewer Area - Area of the sewer network that contributes RDII to the node; in question.
  Note: that this area will normally be displayed. there is only a small localized portion of the subbasin area that contributes to runoff to the node