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ASSESSMENT OF GROUNDWATER FLOW MODEL FOR AN UNCONFINED COASTAL AQUIFER

R. Kaviyarasan, H. Seshadri, P. Sasidhar

The groundwater flow modeling for an unconfined coastal aquifer surrounded by saline water bodies plays a significant role in providing the information on direction and magnitude of groundwater flow with respect to seasons and location. The modeling package MODFLOW was employed in the Visual MODFLOW Pro 2009.1 was applied to simulate the steady state run for Kalpakkam coastal aquifer. The performance of aquifer model was assessed in spatially by using statistical techniques. The steady state simulation was in good agreement with respect to groundwater flow field. The model output results show the groundwater flow was found to follow topography. The model outputs are helps to determine the groundwater flow paths, also helps to delineate the recharge and discharge areas in the Kalpakkam coastal aquifer.