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Long Term Runoff Simulation for Water Balance at Daecheong Basin

대청유역 물수지 분석을 위한 장기 유출모의

  • Lee, Sang-Jin (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Kim, Joo-Cheol (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Noh, Joon-Woo (Korea Institute of Water and Environment, Korea Water Resources Corporation)
  • 이상진 (한국 수자원공사 K-Water연구원) ;
  • 김주철 (한국 수자원공사 K-Water연구원) ;
  • 노준우 (한국 수자원공사 K-Water연구원)
  • Received : 2010.05.20
  • Accepted : 2010.10.07
  • Published : 2010.10.31

Abstract

For an accurate rainfall-runoff simulation in the river basin, it is important to consider not only evaluation of runoff model but also accurate runoff component. In this study long-term runoffs were simulated by means of watershed runoff model and the amounts of runoff components such as upstream inflow, surface runoff, return flow and dam release were evaluated based on the concept of water budget. SSARR model was applied to Daecheong basin, the upstream region of Geum river basin, and in turn the monthly runoff discharges of main control points in the basin were analyzed. In addition, for the purpose of providing the basic quantified water resources data the conceptual runoff amounts were estimated with water budget analysis and the reliability of the observations and the monthly runoff characteristics were investigated in depth. The yearly runoff ratios were also estimated and compared with the observations. From the results of the main control points, Yongdam, Hotan, Okcheon and Daecheong, the yearly runoff ratios of those points are consistent well with data reported previously.

Keywords

SSARR;Daecheong Basin;Water Balance;Runoff Components

Acknowledgement

Supported by : 수자원의지속적확보기술개발사업단

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