Impacts of water surface area of watershed on design flood

作     者：Qing-hua ZHANG Yan-fang DIAO Jie DONG 

作者机构：College of Water Conservancy and Civil EngineeringShandong Agricultural University State Key Laboratory of Hydrology-Water Resources and Hydraulic EngineeringHohai University 

出 版 物：《Water Science and Engineering》 (水科学与水工程（英文版）)

年 卷 期：2014年第7卷第1期

页      面：41-48页

核心收录：

学科分类：08[工学] 0707[理学-海洋科学] 081501[工学-水文学及水资源] 0815[工学-水利工程] 0813[工学-建筑学] 0824[工学-船舶与海洋工程] 0814[工学-土木工程] 

基　　金：supported by the Major Water Conservancy Scientific Research and Technology Promotion Project of Shandong Province,the Special Fund for the Public Welfare Industry of the Ministry of Water Resources of China(Grant No.201201022) the Open Foundation of the State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering of Hohai University(Grant No.2011490111) 

主　　题：watershed water surface area design flood, flood frequency flood volume peak Jlow 

摘      要：In order to analyze the impact of the water surface area of a watershed on the design flood, the watershed was classified into a land watershed and a water surface watershed for flood flow calculation at the same time interval. Then, the design flood of the whole watershed was obtained by adding the two flood flows together. Using this method, we calculated design floods with different water surface areas of three reservoirs and analyzed the impact of water surface area on the flood volume and peak flow. The results indicate that larger water surface areas lead to greater impacts on the flood volume and peak flow. For the same watershed area, the impact of water surface area on the flood volume and peak flow is positively proportional to the flood frequency, i.e., the higher the frequency, the greater the impact becomes.