Assessment of flood control and water environment considering river construction project in a typical coastal city

Abstract

Abstract With the acceleration of industrialization and urbanization, the flood control ability and water environment of most Chinese coastal cities become worse than before, the current river network water system layout and river scale can no longer meet the regional flood discharge and drainage requirements. Yuhuan city is a typical coastal city located close to the east offshore area of China, which also suffered from the flood control and water environment problems. According to the planning reconstruction project of river network in Yuhuan city, the layout of river networks will transform. In this study, a river network model is introduced to simulate different conditions of the planning project. A comprehensive study of flood control and water environment method is utilized in order to ensure the regional water security and social development.