Volume 7 Issue 1
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Qing-hua ZHANG, Yan-fang DIAO, Jie DONG. 2014: Impacts of water surface area of watershed on design flood. Water Science and Engineering, 7(1): 41-48. doi: 10.3882/j.issn.1674-2370.2014.01.005
Citation: Qing-hua ZHANG, Yan-fang DIAO, Jie DONG. 2014: Impacts of water surface area of watershed on design flood. Water Science and Engineering, 7(1): 41-48. doi: 10.3882/j.issn.1674-2370.2014.01.005
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Impacts of water surface area of watershed on design flood

doi: 10.3882/j.issn.1674-2370.2014.01.005
  • 1.

    College of Water Conservancy and Civil Engineering, Shandong Agricultural University,Taian 271018, P. R. China

  • 2.

    State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University, Nanjing 210098, P. R. China

Funds:  This work was 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), and the Open Foundation of the State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering of Hohai University (Grant No. 2011490111).
More Information
  • Corresponding author: Qing-hua ZHANG
  • Received Date: 2012-10-22
  • Rev Recd Date: 2013-06-04
    Abstract
  •  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.   

     

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