砂防における魚道の実態調査

抄録

As comfortable lives are demanded nowadays, we begin to take an interest in near mountain torrents. It seems that constructing sabo facilities in such a mountain torrent affect migratory fishes.
So we investigated fish ladders on sabo facilities in the whole country by questionnaire. As a result of the investigation, some questions and consideration of fish ladders become clear. We consider the rate of satisfaction for fish ladders, but it is difficult to propose the best structure of fish ladders on account of a lack of examples.
We intend to examine fish ladders where fishes can go upstream easily in consideration of the sediment runoff and hydraulic condition of mountain torrents where sabo facilities are built. And we make another attempt to investigate not only fish ladders but also means of environmental preparation which is comfortable for fishes in whole watershed.