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Abstract 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. Keywords : aquifer, groundwater, habitat, interaction, MODFLOW-3D, wetland + To whom correspondence should be addressed. kim.dongkyun@hongik.ac.kr

han-guk seupji hakoeji/han'gug seubji haghoeji

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