Assessing nature-based solutions for flood mitigation and habitat restoration in the Seosi-cheon Stream, South Korea

Flood-related damage has increased due to extreme rainfall events driven by climate change. Nature-based solutions are an effective strategy for mitigating flood damage while restoring riverine ecosystems. The objective of this study is to evaluate the effectiveness of nature-based solutions in the Seosi-cheon Stream, South Korea. The study area is a 10.5 km reach downstream from the Guman Reservoir in Gurye-gun. Scenarios for the creation of retention basins were developed, and their effectiveness of flood mitigation and habitat restoration was evaluated. The flood mitigation effectiveness was evaluated using a hydrodynamic model. The InVEST model was used to assess impacts on habitat quality. The site selection of nature-based solutions was discussed in terms of flood mitigation and habitat restoration.