Research framework and anticipated results of the compilation of flood frequency atlas in small and medium-sized mountainous catchments
GUO Liang, ZHAI Xiaoyan, ZHANG Minghui
1. China Institute of Water Resources and Hydropower Research, Beijing 100038; 2. Research Center on Flood and Drought Disaster Reduction of the Ministry of Water Resources, Beijing 100038
Abstract:Flood frequency analyses of small and medium-sized catchments provide important basis for flood risk analyses and management. This paper puts forward the idea of compiling flood frequency atlas in small and medium-sized mountainous catchments. The hydrological regionalization will be divided and adjusted through comprehensively considering the impact of climate and underlying surface conditions on runoff generation and confluence processes. Flood frequency analysis will be conducted at both station scale and regional scale using historical and investigated flood data. Meanwhile, for small and medium-sized catchments in mountainous regions, flood frequency analysis will be conducted mainly through the distributed hydrological modelling approach on basis of the results of rainstorm frequency analysis and high resolution topographic and geomorphic data. The flood frequency atlas and database will be constructed for small and medium-sized catchments under various frequencies. This study is expected to provide basic supports for flood risk assessment and early response, and promote improvement of flood disaster prevention level.
郭良, 翟晓燕, 张明辉. 山丘区中小流域洪水频率图编制构想和成果展望[J]. 中国防汛抗旱, 2020, 30(9-10): 69-73.
GUO Liang, ZHAI Xiaoyan, ZHANG Minghui. Research framework and anticipated results of the compilation of flood frequency atlas in small and medium-sized mountainous catchments. journal1, 2020, 30(9-10): 69-73.