Author(s): Seung An Choi; Choong Sung Yi; Myung Pil Shim; Hung Soo Kim

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Keywords: Economic feasibility; Economic analysis; MD-FDA; Modified method; GIS

Abstract: There are two methods called ‘a simple method’ and ‘a modified method’ (Ministry of Construction and Transportation, Korea, 2001) for the economic analysis for flood control project. The existing methods for the economic analysis have many problems and so we try to develop a reasonable method with the supplement of existing methods. Economic analysis for flood control project in the River Design Criteria was made based on the modified method (Ministry of Construction and Transportation, Korea, 2002). However, the modified method was made with inaccurate data and there are also some problems such as the limitation of inundation area-damage curve and no consideration of flood frequency in the method. Therefore, we investigate the existing methods. Based on the investigations, we develop a new methodology for economic analysis for flood control project and call it Multi- Dimensional Flood Damage Analysis (MD-FDA). We applied the MD-FDA to the project of a diversion channel construction in the basin of Gulpo-cheon stream, Incheon, Korea and compared the results from the modified method and the MD-FDA. As the results, the modified method and MD-FDA show that the analyzed project has a valid conclusion in economic aspect. However, the MD-FDA shows more reasonable results than the modified method. Say, the MD-FDA could estimate the reasonable damage by considering the regional characteristics of inundation area and flood frequency

DOI:

Year: 2005