• Analyzing the Effect of Groundwater Dam Construction Using Groundwater Modeling
  • Kim, Ji-Wook;Lim, Kyung-Nam;Park, Hyun-Jin;Rhee, Bo-Kyoung;
  • Korea Water Resources Corporation;Korea Water Resources Corporation;Korea Water Resources Corporation;Yooshin Engineering Corporation;
  • 지하수 모델링을 통한 지하수댐 건설 효과 분석
  • 김지욱;임경남;박현진;이보경;
  • 한국수자원공사 지하수지반사업팀;한국수자원공사 지하수지반사업팀;한국수자원공사 지하수지반사업팀;(주)유신 지반터널부;
Abstract
SEAWAT, a linked modeling program of Visual MODFLOW was used to analyze the change in groundwater levels and salinity related groundwater dam construction in Cheongsan island, Wando-Gun, Jeollanam-Do. The steady-state model results show the groundwater flow and salinity distribution of the studied area. The groundwater flows from north-west and south-east highlands into the river, located in the middle part of the basin, and is eventually discharged to the ocean. Part of the sea water infiltrates into the river; and through the estuary's alluvium aquifer, the sea water intrusion takes place spreading to about 830 m from the ocean. The transient model results show that after the groundwater dam construction, groundwater levels will rise to a maximum of 2.0 m upstream, and the groundwater storage will increase 21,000 after 10 years. Meanwhile 31% of the total area affected by sea water intrusion will decrease. To conclude, the groundwater dam is a very useful method for a secure water resource in preparation for drought and water shortages in the island regions.

Keywords: SEAWAT;Groundwater dam;Sea water intrusion;

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This Article

  • 2013; 18(3): 11-22

    Published on Jun 30, 2013

  • 10.7857/JSGE.2013.18.3.011
  • Received on Mar 11, 2013
  • Revised on Jun 25, 2013
  • Accepted on Jun 26, 2013