Bulletin of the Faculty of Agriculture, Shimane University

Faculty of Agriculture, Shimane University

ISSN:0370-940X

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Bulletin of the Faculty of Agriculture, Shimane University 15

1981-12-15 発行

瀬戸内地方の中小河川洪水の極値に関する研究(III)

Study on Record Flood Peaks of Smaller Rivers in Setouti Region(III)

Tanaka, Reijiro

Fukushima, Akira

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This study aims to develop the equation of the enveloping curve rationally in Setouchi Region considering the DAD characteristics of heavy rainfalls and the concentration time of flood runoff.
The Yoshii Takahashi and Ota river basin haye been chosen as the objective basin. The record of heavy rainfall observed at several points covered a river basin have been investigated to disclose the DAD characterisfics of the basin. The DAD equation is then combined with the equation of the time of flood concentration to find a rational form of the equation for flood peaks. Finally, the equation for flood peaks is modified to express a curve enveloping record flood peaks in m^3/sec/<km>^^^2. The formula for enveloping curve has shown good fitness to record flood peaks in Sanyo side of Setouchi Region.

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