This research was conducted based on the anxiety of Graha Bunga Residence who are always hit by floods during heavy rainfall. This study aims to provide a solution to overcome the floods was often occurs in the Graha Bunga Residence through installing pumps and flood gates which then simulated using EPA SWMM 5.1 software. In this research, a reservoir is needed to collect rainwater before it is released through sluice gates. The data used in this study are rainfall data, drainage channel, pump capacity and sluice gate size. The research was started by looking for the elevation of existing drainage channels using Google Earth then next get the calculation rainfall per hour, where it calculated using the Mononobe formula. Furthermore, the rainfall simulation is found out the sluice gate and the active pumps are still able to accommodate the rainfall therefore it requires additional pumps to dispose excessive water.
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