砂防堰堤魚道における魚カウンターの研究について

抄録

In this study, detect ability of a small fish in a small fish way installed on a sabo dam by electrical resistivity fish counter was examined by experiments using an experimental channel. Effects of configuration of electrode for the counter, hydraulic condition of channel, size and swimming position of fish on detect ability of the counter were characterized. It was shown that detect ability of a small fish by the counter with flat electrode or U-shape electrode isnʼt so high. It is necesary to modify installing method of the counter when it is installed on a sabo dam fish way.