한국습지학회지 (Journal of Wetlands Research)

  • 제15권1호
  • /
  • Pages.43-50
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  • 2013
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  • 1229-6031(pISSN)
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  • 2384-0056(eISSN)
한국습지학회 (Korean Wetlands Society)
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Searsville 댐 상류부를 대상으로 한 퇴적토와 저수지로 구성된 지하수 시스템의 지하수-지표수 상호작용

Groundwater-surface water interaction of the upstream area of the dam composed of accumulated sediments and reservoir in the upstream area of Searsvill Dam

  • 투고 : 2012.11.29
  • 심사 : 2013.02.19
  • 발행 : 2013.02.28
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초록

미국 캘리포니아 주의 Searsville 호수와 인근 생태습지의 지하수-지표수의 상호작용을 3차원 지하수 수치 모형을 사용하여 모의하였다. 특히, 호수 수위의 급격한 저하가 호수를 둘러싸고 있는 생태습지의 지하 수위를 어떻게 변화시키는지에 대해 초점을 맞추어 연구를 진행하였다. 모의 결과, 모형에 적용된 다양한 대수층의 수문지질학적 매개변수에 상관 없이 습지의 생태에 큰 영향을 줄 정도로 지하수위의 변화가 크지 않다는 결론을 도출하였다. 이러한 연구 결과는, 댐 및 보의 수문 개방, 가뭄 등으로 인한 지표수위의 급격한 저하에 따른 주변 생태습지에서의 지하수위 및 이에 큰 영향을 받는 생태계의 변화에 대한 유용한 정보를 제공할 수 있을 것이다.

The groundwater-surface water interaction of Searsville Lake area, California, US was analyzed using 3-dimensional groundwater model. This study especially focuses on investigating the groundwater head drawdown near the lake when the abrupt decline of the lake water table occurs due to the implementation of the options to remove the accumulated sediments along the dam. The result of the investigation revealed that the groundwater head drawdown near the lake is not significant enough to adversely affect the wetland habitat of the area regardless of the hydrogeologic parameters of the aquifers. We expect this result provides useful information to the similar Korean case studies in which the surface water level abruptly changes due to the operation of the hydraulic gates of dams and wiers and the corresponding environmental impact should be considered.

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참고문헌

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