Simulation of Change in Physical Habitat of Fish Using the Mobile Bed Model in a Downstream River of Dam

댐 하류 하천에서 하상변동 모델을 이용한 어류 물리서식처 변화 모의

  • Kim, Seung Ki (Department of Civil and Environmental Engineering, Yonsei University) ;
  • Choi, Sung-Uk (Department of Civil and Environmental Engineering, Yonsei University)
  • 김승기 (연세대학교 토목환경공학과) ;
  • 최성욱 (연세대학교 토목환경공학과)
  • Received : 2015.12.02
  • Accepted : 2015.12.20
  • Published : 2015.12.30


This study investigated the impact of the morphological change on a physical fish habitat in the downstream reach of a dam using long-term mobile bed simulation. The quasi-steady model was used for hydraulic simulation and the habitat suitability index model was applied for physical habitat simulation. For simulating long-term morphological change of the stream bed, The Exner equation was used. Sorting of bed material was also considered. The results of simulation showed that erosion and armoring process occurred in a reach downstream of the dam and change of physical habitat for Zacco platypus followed. These results indicate that channel morphology and substrate conditions effected the physical habitat for considering long-term investigation.


Dam;Geomorphological change;Hydropeaking;Physical habitat simulation;Quasi-steady model


Supported by : 한국연구재단


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