The purpose of this study is to analyze the hydraulic characteristics of the ice-harbor fishway by considering its geometrical form and utilize such analysis results as the foundational database to be used when establishing fishways in the future. first of all, the study realizes the same form as an ice-harbor fishway that is currently implemented via a FLOW-3D model and estimated the parameters that were optimal to the numerical mock test. Then, this study analyzed the level of sensitivity of the flow conditions which fluctuated due to the changes in geometrical changes by adjusting the inclination and pocket spacing by using the estimated optimal parameters. As a result, the study arrived at the following conclusions. The vortical velocity increased and had a significant effect on the inclination of the fishway. Furthermore, as the velocity within the vorticity increased due to the narrowed vortical area, it was determined that further studies on vorticities or the determination of the design method for the decrease in vortical velocity were imperative.

Abstract
 1. 서 론
 2. 모형의 기본이론
  2.1. 3차원 FLOW-3D 모형의 개요
 3. 모형의 적용 및 분석
  3.1. 연구대상지역의 선정 및 자료 구축
  3.2. 연구대상 지역의 서식어종 및 소상특성
  3.2. 현지조사 및 매개변수 검․보정
  3.3. 아이스하버식어도의 수치모의를 통한 흐름특성 분석
 4. 결 론
 참 고 문 헌

• 안승섭(경일대학교 건설공학부) | Seung-Seop Ahn (School of Construction Engineering, Kyungil University)
• 이상일(경일대학교 토목공학과 대학원) | Sang-Il Lee (Department of Civil Engineering, Kyungil University) Corresponding author
• 이증석(경일대학교 건설공학부) | Zeung-Seok Lee (School of Construction Engineering, Kyungil University)