Research development in measures for downstream migration of fish through dams

In order to achieve the purpose of migratory fish through water conservancy facilities safely and efficiently, the development of the research on the measures for downstream migration of fish through dams at home and abroad is provided to prove which measure is more effective for fish through dams. In this paper, Surface Bypass Collection (SBC), using the characteristic of fish to find suitable water flow, is introduced in detail. At the same time, "Fish-friendly" turbine, using the flow passage as the way for fish to pass through the dam, is put forward as a new idea. The feasibility of the design and the cases of the practical engineering are also described. Because of the differences of fish species and water environmental factors between civil and abroad, successful projects abroad can't be copied directly. In view of the deficiency of the design and demonstration of "Fish-friendly" turbine, some suggestions are put forward for the selection of the measures for fish pass through the dam and the existing problems of applicable conditions.