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http://dx.doi.org/10.14481/jkges.2016.17.9.21

Flooding Area Estimation by Using Different River Topographic Maps  

Moon, Changgeon (Changseol Co., Ltd.)
Lee, Jungsik (Department of Civil Engineering, Kumoh National Institute of Technology)
Shin, Shachul (Department of Civil Engineering, Andong National University)
Son, Hogeun (Department of Civil Engineering, Kumoh National Institute of Technology)
Publication Information
Journal of the Korean GEO-environmental Society / v.17, no.9, 2016 , pp. 21-28 More about this Journal
Abstract
The purpose of this study is to compare the three areas that each estimated by using three different river topographic maps. For construction of river topographic maps, the data used in this study are ASTER, SRTM and a 1:5,000 scale digital map data sets in 14 streams of the Cheongdo-gun and Uiseong-gun. HEC-GeoRAS, RAS Mapper, and RiverCAD model are applied for the flooding area analysis using observed data and design rainfalls. The result of analysis is to compare observed flooding area based on the flood plain maps with estimated inundation area by hydraulic models and constructed river topographic maps. The results of this study are as follows; Flooding area by HEC-GeoRAS model is similar to the inundation area of flood plain map and appears in order of RAS Mapper, and RiverCAD model in all watersheds. Flood inundation area by SRTM DEM is similar to the result of 1:5,000 scale digital map in all watersheds and all analysis models. The SRTM DEM shows the most similarity to the digital map than ASTER DEM in all of the watershed scale and analysis models. HEC-GeoRAS and RiverCAD model are efficient models for flood inundation analysis in small watershed and HEC-GeoRAS and Ras Mapper model are efficient in medium to large watershed.
Keywords
Flooding area; River topographic maps; Hydraulic model;
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Times Cited By KSCI : 1  (Citation Analysis)
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