Flooding is a major problem that occurs during the rainy season. Planning for the development of retention ponds in Bukit Raya sub-district can be an ecodrain-based flood control effort. The purpose of this study was to analyze the capacity of retention ponds as flood control buildings in the study sites. Determination of 5-year periodic retention analysis in this study is to use Log Person III probability distribution. Then, to analyze the flood flows in this study is to use the EPA SWMM program. The results of the analysis show that the floods occurring at the study sites are caused by the limited drainage capacity and the flow of water flowing into the lowest contour channel. Changes in drainage structures and supporting constructions can overcome flood problems in the study sites. The retention pool capacity is 12,000 m3 with a maximum depth of 1 m and ponded area of 12,000 m2.
Keywords : Flood Control, Drainage, Retention Pond.