ESTIMATION OF FLOOD STORAGE VOLUME IN THE THREE RETARDING BASINS ALONG THE TONE RIVER

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  • MATSUMOTO Takashi
    Graduate School of Science and Engineering, Chuo University
  • FUKUOKA Shoji
    Research and Development Initiative, Chuo University
  • SUMI Tetsutaro
    Upper Tone River Office, Kanto Regional Development Bureau, Ministry of Land, Infrastructure, Transport and Tourism

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Other Title
  • 利根川河道沿い三調節池群の洪水調節量の算定

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The Tanaka, Sugo, Inadoi retarding basins which are located along the Tone River have an important role on flood control in the lower Tone river. The lower Tone River has some flood control problems such as flood discharge capacity of the river. In this paper, we developed the unsteady two-dimensional analysis of flood flows using the time series data of observed water surface profiles in the Tone River including the three retarding basins. The calculation model provides a good explanation for flood storage volume in the three retarding basins of 2001 and 2007 floods. Some remarks are given to calculate correct hydrographs of flood storage volume in retarding basins.

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