As a research establish reservoir safety operation for small dam systems. This study presents hydrologic analysis conducted in the Duckdong and Bomun dam watershed based on various rainfall data and increase inflow. Especially the Duckdong dam without flood control feature are widely exposed to the risk of flooding, thus it is constructed emergency gate at present. In this study reservoir routing program was simulation for basin runoff estimating using HEC-HMS model, the model simulation the reservoir condition of emergency gate with and without. At the reservoir analysis results is the Duckdong dam average storage decrease 20% with emergency gate than without emergency gate. Also, the Bomun dam is not affected by the Duckdong flood control augmentation.

• 박기범(안동과학대학 건설정보과) | Ki-Bum Park Corresponding Author
• 이순탁(영남대학교 토목도시환경공학부) | Soon-Tak Lee