Impact of rainfall in middle rainy season on floods in Chao Phraya River, Thailand

DOI

Bibliographic Information

Other Title
  • 雨季中盤の雨がタイ・チャオプラヤ川の洪水に与える影響

Abstract

The aim of this study is to identify the rainfall condition causing floods in the Chao Phraya River, Thailand. The authors have conducted hydrological simulations and record data analyses using observed-based rainfall data from 1980 to 2011. +43% of average rainfall in 2011 brought +125% of average runoff, which accounts for about +29 km3. No dam’s operation may prevent the massive flooding perfectly because increased runoff exceeded the capacity of Bhumibol Dam (13.5 km3) and Sirikit Dams (9.5 km3). Small increase in rainfall can result large increase in runoff because of low runoff ratio. Rainfall in meddle rainy season is more dominant than that in late rainy season. Total water storage exceeded its limit in natural flood years, because they had much rainfall in meddle rainy season. Saturated soil increases not only base runoff, but surface runoff via preventing infiltrations.

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Details 詳細情報について

  • CRID
    1390001205712520832
  • NII Article ID
    130005050902
  • DOI
    10.11520/jshwr.26.0.156.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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