Drainage planning is an effort made in residential or urban areas in order to capture, drain, and dispose of rainwater or excess runoff in order to prevent flooding. The purpose of this study was to analyze and evaluate the drainage system at Ya Samman Cindo Housing, Kab. Banyuasin, South Sumatra, which was designed using the CivilStorm V8i Program. In this study, the return periods used in pro…