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http://dx.doi.org/10.11108/kagis.2019.22.4.181

Mapping Technique for Flood Vulnerable Area Using Surface Runoff Mechanism  

LEE, Jae-Yeong (Dept. of Land, Water and Environment Research, Korea Institute of Civil Engineering and Building Technology)
HAN, Kun-Yeun (School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University)
KIM, Hyun-Il (School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.22, no.4, 2019 , pp. 181-196 More about this Journal
Abstract
Floods can be caused by a variety of factors, and the main cause of floods is the exceeding of urban drainage system or river capacity. In addition, rainfall frequently occurs that causes large watershed runoff. Since the existing methodology of preparing for flood risk map is based on hydraulic and hydrological modeling, it is difficult to analyse for a large area because it takes a long time due to the extensive data collection and complex analysis process. In order to overcome this problem, this study proposes a methodology of mapping for flood vulnerable area that considered the surface runoff mechanism. This makes it possible to reduce the time and effort required to estimate flood vulnerabilities and enable detailed analysis of large areas. The target area is Seoul, and it was confirmed that flood damage is likely to occur near selected vulnerable areas by verifying using 2×2 confusion matrix and ROC curve. By selecting and prioritizing flood vulnerable areas through the surface runoff mechanism proposed in this study, the establishment of systematic disaster prevention measures and efficient budget allocation will be possible.
Keywords
Surface Runoff; Flood Vulnerable Area; ROC Curve; GIS Mapping;
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Times Cited By KSCI : 2  (Citation Analysis)
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