Title

Field Observation of the Migrating Fish through the Bouldery Sloping Fishway in Nagara River

Authors

S Kawai
Y Ogawa

Publication Date

1995

Notes

Title, abstract, and figure legends in English, remainder of text in Japanese

Publication Title

Proceedings of the International Symposium on Fishways '95

Start Page

421

End Page

426

Publication Place

Gifu, Japan

Publisher

The Organizing Committee for International Symposium on Fishways '95 in Gifu

Abstract

The sloping fishways of Tsurugi Intake Weir and of Futsukamachi, which are both located on the upper reaches of Nagara River, were reconstructed. The observation was taken place on these fishways, by placing the fish net. From the observation result it is known that most fishes are using these fishways. The fishway of Tsurugi Intake Weir has boulders and pools. On the other hand, the fishway of Futsukamachi Intake Weir has boulders, and is creating natural riffles. Fishes migrate upstream by going through the end of the stream, where the flow is relatively slow, and they use the pools as a resting place.



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