Author(s): Minjeong Kim; Inhwan Park
Linked Author(s): Inhwan Park
Keywords: Urban Flood Low Impact Development (LID) Runoff Reduction Efficiency SWMM
Abstract: Due to climate change and the increase in impervious areas, the frequency and scale of flood damage in urban catchments are increasing. Consequently, the design and implementation of rainfall runoff reduction facilities have gained critical importance. This study evaluates the performance of four types of Low Impact Development (LID) facilities to minimize flood damage in Youngsan River basin, Republic of Korea. Storm Water Management Model (SWMM) was employed to model LID application strategies, and design parameters of LID facilities were optimized for each sub-catchment to evaluate their runoff reduction performance. The analysis results indicate that both Bio-retention Cells and Rain Gardens show outstanding performance, with Bio-retention Cells demonstrating the highest runoff reduction effectiveness. Furthermore, this study confirms that the optimal LID facility varies based on the characteristics of the sub-catchment area. Through a comparison with actual flooded regions, the most effective LID facility types were selected to provide insights into urban flood management.
Year: 2025