Estimation of Parameters of Crystalline Rock Aquifers: A Case Study

Aquifer parameters viz. transmissivity (T) and storage coefficient (S) are a pre-requisite for the assessment of groundwater resources in an area. A large number of dugwells tapping the top phreatic aquifer (comprising mostly weathered material) are being utilized for irrigation and/or domestic purposes. Use of such wells makes the estimation of aquifer parameters easy and cost effective. A case study in Vaippar river basin, a hard rock region in Tamil Nadu (India) is presented.