Evaluation of hydrogeological parameters through mathematical modeling: A case study

Hydrodynamics of groundwater flow regime in a hard rock region and its quantification are not yet fully understood. This is mainly due to several uncertainties involved in quantifying the hydrogeological parameters. Numerical techniques are found to be potential tools in interpreting hydrogeological parameters in hard rock regions as well as studying the aquifer response for given input/output stresses. One such study was carried out in Palar river basin, Tamil Nadu, where pumping tests carried out on large diameter wells were interpreted using a numerical technique. The aquifer parameters (transmissivity - T and storage coefficient - S) evolved through pumping tests were then used to characterize the groundwater flow regime.