Status and prospection of fish pass construction in China

By summarizing and analyzing the construction status of fish passes,this paper pointed out that the main types of fish pass in china are vertical slot pass and close-to-nature pass.For dams at different heights,the depths of fish passes generally are 2.5m~3.0m with the flow velocities of 0.6m~1.2m.There are some problems in research,design,construction and management of fish passes.In order to improve the design,operation and management of fish passes,some new management ideas are proposed.For developing the fish passes,the following aspects are pending for impoved including the perfection of technology criterion,strengthening the fundamental research and the collaboration of different sections.