SWMM56

Subject:   How is  RDII   Storage   Simulated  in  SWMM   5 ? If you are using the  SWMM   5  Rainfall Dependent Infiltration and Inflow( RDII )  feature you can also use the  RDII   storage  parameters to change the  RDII  runoff by simulating the  storage  in the Sewershed.   The code in  RDII .C as implemented by Lew Rossman of the EPA keeps track of used and unused initial abstraction or IA (Figure 1) When there is rainfall the following actions are taken: ·          The raindepth available to be convoluted by the  RDII  unit hydrograph method is reduced by unused IA ·          The amount of IA used up is then updated  When there is no rainfall ·          A portion of the IA already used is recovered using the recovery rate paramete...

Subject:   How is RDII Storage Simulated in SWMM 5? How is RDII Storage Simulated in SWMM 5? by  dickinsonre Subject:   How is RDII Storage Simulated in S WMM 5? If you are using the SWMM 5 Rainfall Dependent Infiltration and Inflow(RDII)  feature you can also use the RDII storage parameters to change the RDII runoff by simulating the storage in the Sewershed.   The code in RDII.C as implemented by Lew Rossman of the EPA keeps track of used and unused initial abstraction or IA (Figure 1) When there is rainfall the following actions are taken: ·          The raindepth available to be convoluted by the RDII unit hydrograph method is reduced by unused IA ·          The amount of IA used up is then updated    When there is no rainfall ·    ...