InfoSWMM or SWMM 5 Basic Runoff and Other Wet Weather Processes · June 17, 2011 Note: InfoSWMM or SWMM 5 Basic Runoff and Other Wet Weather Processes Figure 1: Possible Sources of Input flow and Output Losses or Outflow Figure 2: Variables and Pathways on a Subcatchment Surface Figure 3: Subcatchment Pathways for Rainfall in SWMM 5