Inderscience Publishers

Micro level groundwater flow and transport model to predict future spread of pollution for Ambur sub–basin, Tamil Nadu, India

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Courtesy of Inderscience Publishers

Realistic groundwater flow and transport models have greater use in understanding, predicting and managing groundwater systems in water–scarce and polluted areas. In this study, micro–level flow and transport models were developed, using the Visual MODFLOW software, for the highly polluted Ambur sub–basin, Tamil Nadu for the purpose of predicting pollution migration in the next 50 years and providing site–specific insight for remediation action. The study covered 70 villages over the period 2009–2011. The simulation results revealed that in a few villages, the Total Dissolved Solids (TDS) levels increased by 100% to 200% over a 50–year period. Recommendations were made for pollution dilution through water recharge structures and for carrying out further simulation exercises on remediation impact. The model predictions provide a framework to researchers for carrying out similar groundwater modelling exercises for all types of groundwater polluted areas and river basins for the purpose of predictions and preventive remediation actions.

Keywords: micro level groundwater, transport modelling, Visual MODFLOW, pollution prediction, TDS, total dissolved solids, groundwater flow, water pollution, India, simulation, water recharge, remediation impact

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