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Simulation of Water Temperature in the Downstream According to Withdrawal Types of Dam using EFDC Model

  • Journal of Environmental Impact Assessment
  • Abbr : J EIA
  • 2012, 21(5), pp.715-724
  • Publisher : Korean Society Of Environmental Impact Assessment
  • Research Area : Engineering > Environmental Engineering

박재충 1 윤진혁 2 정용문 3 손지연 1 Youngil Song 4

1K-water 밀양권관리단
2(주)휴먼플래닛
3K-water 수자원사업처
4한국환경정책·평가연구원

Accredited

ABSTRACT

In this study, we simulated water temperature in the downstream according to withdrawal types of dam using EFDC model. Three scenarios were assumed as water was released from the surface layer, the middle layer, and the bottom layer at intervals of 10m depth. In case of the surface layer withdrawal, the water temperature rose from March and lowered gradually after it reached a peak in August. The middle and the bottom layers effluence temperatures were lower than the surface layer temperature by maximum 15.9℃(in July), but after September, temperature inversion appeared. It was advantageous for the surface layer withdrawal to decrease cold damage and fog in downstream area and was possible to the middle and the bottom layers withdrawal from August to September. However, the reliability of model should be improved by accumulating the real-time information of water temperature.

Citation status

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