Simulasi Banjir Sungai Putri Danau Sipin Kota Jambi

River is one of the water resources that widely used to meet raw needs. Along with changing conditions in river basin, changes land use and population growth make not function optimally as it should. One natural phenomena threatens existence human life several regions Indonesia every time rainy season enters sure experience flooding, especially Jambi city area. This due reduced capacity drainage cross-section so high rainfall no longer able accommodate flood discharges resulting overflow water. The purpose this study determine difference between Sungai Putri discharge Q25 identify points provide solutions problems occur / or Lake Sipin drainage, city. In study, secondary data for 10 years cross-sectional drainage. results calculation planned using rational mononobe method Q2 = 18,695 m3/s, Q5 23,171 Q10 26,397 Q20 30,021 m3/s 30,804 m3/s. And next step HAC-RAS 3.13 software. After being analyzed software, point cannot incoming flow, necessary redesign can occurs year rainfall.