A Study on Determination of Investment Priority of Flood Control Considering Flood Vulnerability

Abstract

The purpose of this study is to suggest a way to determine effectively investment priority for flood control in a region. Potential flood damage(PFD) and flood risk indices were proposed from the national water resource plan. They have been used as the methods for assessing flood vulnerability. This study estimates the flood vulnerability index in each sub-basin after calculating weights on factors of the methods by using existing method, AHP(Analytic Hierarchy Process) and entropy theory. Based on the estimated index, investment priority of flood control in the basin was determined. The tendency of flood vulnerability and the expected effect of business was analyzed through the scenarios on applying flood mitigation projects. As a result, it was expected that the imbalance of the vulnerability was reduced in the watershed with the improvement of the vulnerability in the sub-basins which had the high flood vulnerability. Keywords: Investment Priority of Flood Control, Potential Flood Damage, Flood Risk Indices, AHP(Analytic Hierarchy Process), Entropy