Stormwater Management Model (SWMM) Information for watershed water quality, hydrology and hydraulics modelers (Note this Blog is not associated with the EPA). You will find Blog Posts and Twitter Embeds on the Subjects of SWMM5, InfoSWMM, InfoSewer, ICM SWMM Networks, SWMM4 and SWMM in general.
How to use the Flow Splitter in InfoSewer for Dendritic Networks
Subject: How to use the FlowSplitter in InfoSewer for Dendritic Networks
InfoSewer, which is an extension in Arc Map, does need to have slit split defined where gravity mains merge together to determine the amount of flow in each of the downstream conduits (Figure 1). The options for the flowsplitterin each of the downstream links are:
At an outfall where the invert of the outfall pipe is raised compared to the inverts of the incoming and outgoing pipes a flow split of VariableFlowPercentage or Inflow/Outflow curve may work better (Figure 2).
Figure 1. Options for Performing a Flow Split in InfoSewer
Figure 2. The Effect of the flow split can be used to model complex situations in a dendritic model with outfalls.