Title
Experimental Study on a Steep Pool-and-Weir fishway using Ayu
Publication Date
1995
Publication Title
Proceedings of the International Symposium on Fishways '95
Start Page
169
End Page
173
Publication Place
Gifu, Japan
Publisher
The Organizing Committee for International Symposium on Fishways '95 in Gifu
Abstract
In Japan fishways are usually constructed more mild slope than 10%, because the targets of the fishways are almost always Ayu fish which is 10-20 cm long. However, the fishways in sabo dams sometimes need to be settled more steep slope than 10%. Therefore the authors tried to examine the possibility of a steep pool-and-weir fishway for sabo dams through fishway experiments using Ayu fish. The authors confirmed that the Denil type fishways are not suitable for Ayu fish in the field. As a result of the experiments, it is confirmed that Ayu ascends the pool-and-weir fishways of 20-30% gradient in limited water levels (less than 10cm high on each weir).
Notes
Title, abstract, and figure legends in English, remainder of text in Japanese