Hydrological Analysis and Frequency Calculation of Small and Medium-sized Rivers in Some Hilly Areas of Anhui Province
Through field investigation and analysis of 11 survey points and internal data from 11 townships and 3 rivers in Xuancheng City,Anhui Province,it was found that the main problems with small rivers in Xuancheng City have such problems as incomplete governance,low embankment compliance rate,weak flood control facilities,low standards and insufficient ability to defend against flash floods.There are numerous small tributaries of mountain streams in mountainous areas,with serious soil erosion,riverbed siltation,and extreme instability.It is suggested to advance the flood control project and strengthen the education of flood control safety so as to improve flood control level.