Author(s): Sung-Uk Choi
Linked Author(s): Sung-Uk Choi
Keywords: Hydro-morphodynamic simulation; Physical habitat simulation; River morphology; Gravel-bed river; Weighted usable are
Abstract: This study investigates the impact of morphological change on the physical habitats after a flood. The study area is a regulated, gravel bed river reach, located downstream of a dam in Korea. For the physical habitat simulation, 1D HEC-RAS model and habitat suitability curve model are used for hydro-morphodynamic simulation and habitat simulation, respectively. Zacco koreanus, the most dominant fish species, is selected for the target fish for physical habitat simulation. It is found that erosion of the bed and deposition of sediment occur repeated in the longitudinal direction, with erosion much more dominant over the study area. This resulted in the deterioration of physical habitats in the study area significantly.
Year: 2024