Return Flow Node Flows

Return flow nodes (RFN) are a point at which demand sites (DS) and treatment plants (TP) returns enter the river. The downstream outflow from the return flow node equals the inflows from upstream, plus demand site (DS) and treatment plant (TP) return flows that come in at that point.

DownstreamOutflowRFN = UpstreamInflowRFN + DSReturnFlowDS,RFN + TPReturnFlowTP,RFN