A HYDRAULIC STUDY ON THE EFFECTS OF FLOOD CONTROL AND WATER USE OF CUT-OFF CHANNELS AND OLD MEANDERING PARTS OF CHIKUGO RIVER

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  • 筑後川の捷水路と旧蛇行部の治水・利水の効果に関する水理学的検討

Abstract

<p> Chikugo river has many cut-off channels nowadays but there are many old meandering parts still existing. All inflowing tributaries into Chikugo River do not connect directly to main stream of present Chikugo River but flow into the old meandering parts of this river. These reasons has never been clarified until now. In this study, cut-off channels and old meandering parts with inflowing tributaries are analyzed hydraulically in the both cases where a tide is effective or not effective. As a results, not only the cut-off channels but also the old large meanderings are found to be considered for water use and flood control.</p>

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