Research on general layout planning of flood control system of Yangtze River

The research on the flood control system of Yangtze River and its general layout is an important content of the Comprehensive Planning of Yangtze River Basin. According to the practical condition of Yangtze River and long-time research as well as planning practice,the main components of flood control system and flood control countermeasures of the mid-lower reaches,the main stem of upper reach and the main tributaries are introduced. Under the guidance of flood control policy and principles of Yangtze River,the layout of flood control in the mid-lower reaches is taken as the keystone. The research achievements for the relationship between flood storage and flood discharge and the planned flood diversion measures for extra-flood in typical years are also presented. The necessity of perfecting the comprehensive flood control system for tackling the climatic change and adapting to the society and economy development in the basin after completion of some controlling hydropower projects such as TGP is pointed out.