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Flood area and damage estimation in Zhejiang, China.

A GIS-based method to estimate flood area and damage is presented in this paper, which is oriented to developing countries like China, where labor is readily available for GIS data collecting, and tools such as, HEC-GeoRAS might not be readily available. At present local authorities in developing co...

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Published in:Journal of Environmental Management Vol. 66; no. 1; pp. 1 - 9
Main Authors: Renyi, Liu, Nan, Liu
Format: Article
Published: Academic Press Inc. September 2002
Subjects:
Geographic information systems
Environmental management
Floods
China
Online Access:View this record in EBSCOhost
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        03014797
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      dt: September 2002
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      pub: Academic Press Inc.
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        506335776
        10.1006/jema.2002.0544
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        atl: Flood area and damage estimation in Zhejiang, China.
      aug:
        au:
          Renyi, Liu
          Nan, Liu
      su:
        Geographic information systems
        Environmental management
        Floods
        China
      sug:
        subj:
          China
          Geographic information systems
          Environmental management
          Floods
      ab: A GIS-based method to estimate flood area and damage is presented in this paper, which is oriented to developing countries like China, where labor is readily available for GIS data collecting, and tools such as, HEC-GeoRAS might not be readily available. At present local authorities in developing countries are often not predisposed to pay for commercial GIS platforms. To calculate flood area, two cases, non-source flood and source flood, are distinguished and a seed-spread algorithm suitable for source-flooding is described. The flood damage estimation is calculated in raster format by overlaying the flood area range with thematic maps and relating this to other socioeconomic data. Several measures used to improve the geometric accuracy and computing efficiency are presented. The management issues related to the application of this method, including the cost-effectiveness of approximate method in practice and supplementing two technical lines (self-programming and adopting commercial GIS software) to each other, are also discussed. The applications show that this approach has practical significance to flood fighting and control in developing countries like China. Copyright 2002 Elsevier Science Ltd. All rights reserved.
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      doctype: Article
      src: R
    language: English
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