Modeling LID-units in SWMM
The LID control in US EPA SWMM5 includes modeling of Green-Ampt infiltration through the soil layer which assumes that only matrix flow is present. The LID control also models drainage through perforated underdrains. In this study, data and premade PCSWMM models, utilizing the SWMM5 engine, were provided for two test sites in North America. The models showed limitations in modeling soil flow and t
