Fish movement was blocked by Dam construction in korea, but fish of the ecosystem can be destoryed without movement of fish in the small stream or river.
In this study, the water ladder type of fishway with the fish's ecological specific character is proposed. That is created similar to the real natural environment in order to overcome differences in water pressure.
It consists water hydrology, bypass, viewing chamber and viewing windows. It is used IT pumping system and bypass fishway for dry season especially. 3D analysis by SAP2000 Soft Ware is essential in concrete structures for the degradation of its durability using the multi-functional fishway's advantages.
The size of water tank(4m×4m×5m) is more advantageous than that of other size.

• 이영재(경북대학교 공과대학 건축토목공학부) | Lee, Young Jae 교신저자
• 이정신(경북대학교 건설환경에너지공학부) | Lee, Jung Shin
• 장형규(경북대학교 건설환경에너지공학부) | Jang, Hyeong Kyu