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Investigation of Flood Stage on the Upstream Waterfront Area in Floodplain Depending on the Operation Rule of the Nakdong River Estuary Barrage

  • Crisisonomy
  • Abbr : KRCEM
  • 2014, 10(7), pp.139-148
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

안상도 1

1한국수자원공사

Accredited

ABSTRACT

This study investigates the effect of different operation rules of the Nakdong River Estuary Barrage on change in flood water level. We employ 1-D numerical model, HEC-RAS to predict the flood water level at each eco-park in the floodplain in response to increasing flood inflows. Numerical results show that flooding at the eco-park occurs when the expected size-floods range from 1.1-year to 3.0-year frequent. It means that flood damage would occur before the extreme flood events with flooding warning issued by the Korean Flood Control Office. Thus extension of the flood levels issued by the Flood Control Office(FCO) is recommended for the safety of visitors to the echo parks. We predict numerically the decrease of flood water level when all sluice gates in the barrage are opened. The results show that the decrease of flood water level approximately ranging from 10 to 20cm can be obtained when the all gates of Nakdong River Estuary Barrage are opened together to discharge flood.

Citation status

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