This study has performed the flood risk assessment using PROMETHEE(Preference Ranking Organization METHod for Enrichment Evaluation), one of the multi-criteria decision making methods, for identifying area zones with regional flooding risk in terms of the integrated flood risk management. The 12 representative factors for flood risk assessment are carefully selected and constructed for the three main aspects, such as PF(Pressure Factors), SF(State Factors), and RF(Response Factors) under the P-S-R(Pressure-State-Response) classification system at a spatial resolution of city/county/town units for the Nakdong River Watershed, The entropy weight coefficient method is also applied to calculate the weight of flood risk factors in order to reduce subjective judgement on the effect of weight coefficients. To examine the practical application of the proposed method for identification of flood risk areas, the results with/without the weight coefficients are compared with flooding zones of natural disaster risk areas officially announced in 2010. It is expected that the flood risk assessment method ensured by full verification can establish a rehabilitation priorities of catchments for regional protection plans against flooding disasters with respect to causes and characteristics of past floods.
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