RIVERBED MANAGEMENT IN MIDDLE REACH OF THE KAMANASHI RIVER

Autor:	Satoru Oishi, Manabu Hirata, Masayoshi Hirose, Kengo Sunada, Naoki Miyazawa
Rok vydání:	2006
Předmět:	Dredging Hydrology Return period Flow conditions Flood myth Organic Chemistry Flow (psychology) Elevation Environmental science Sedimentation Biochemistry
Zdroj:	PROCEEDINGS OF HYDRAULIC ENGINEERING. 50:991-996
ISSN:	1884-9172 0916-7374
DOI:	10.2208/prohe.50.991
Popis:	In the middle reach of Kamanashi River, riverbed has a tendency of aggregation. In this study, some development scenarios for maintaining the riverbed elevation in view of the sedimentation trends were examined. The riverbed variations were calculated by using a MIKE21C curvilinear model. First, by comparing calculated results with the actual riverbed variation obtained between 1998 and 2003, the model was calibrated and validated. In addition, plane properties of changes of flow during that period were explained. Next, by using the model, the future riverbed variations starting from 2004 onward under the flow conditions of the 20-year flood return period and under 2 different development scenarios were forecasted. The study result shows that the development scenario 1 where some well planned dredging works are undertaken would be more suitable for riverbed management of this reach.
Databáze:	OpenAIRE
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