Abstract:Rizhao City is near the mountains and the sea. Its terrain is high in the northwest and low in the southeast, which belongs to the hilly region of the eastern Shangdong. And the rivers crisscross the territory and landforms are varied. In recent years, the economic and social development and urban construction of Rizhao City have been changing with each passing day, and the external environment of the city and the conditions of the underlying surface have undergone major changes, which has put forward new requirements for flood control safety. Guided by the new round of urban master planning, the relevant contents of the master planning are implemented to adapt the urban population and development scale. The flood control system in the main urban area is further perfected, and the flood control security capacity of key areas is consolidated and enhanced. It is to clarify the goals and key tasks of urban flood control construction, and the flood control construction projects. It is to do a good job in promoting the top-level design of high-quality water conservancy development in the new stage, and improve the safety and security capabilities of flood control, which can provide the reference for the relevant planning of the northern coastal hilly cities.