This study analyzes the change in the peak flow rate and discharge capacity of a sewage network with LID facilities using the rainfall runoff hydrological model SWMM. The demonstration complex has an area of 35,151 m2 and include the seven elements of LID facilities: a porous pavement, tree box filter, planter box, bio retention, infiltration trench, rain barrel, and an infiltration rain catch basin. The results of analysis using the SWMM show that the peak flow rate per watershed decreased by 9.07% on average and 7.46% within the target site. According to the result observed for discharge capacity within sewerage network, the branch sewer improved by an allowance of 13.22% for a 10-year return frequency and main sewer improved by an allowance of 9.69% for a 30-year return frequency.