Computation of aquifer parameters using geo-electrical techniques for the North Chennai coastal aquifer

Computation of aquifer characteristics, such as hydraulic conductivity, transmissivity, formation factor, and porosity utilizing the geophysical method is less complex compared to that using arduous pumping test. Vertical electrical soundings directed in 33 areas in the north Chennai coastal aquifer in the Araniyar-Kosasthalaiyar basin demonstrates that the geo-electrical technique is a valuable tool to assess subsurface development and aquifer parameters. High values of hydraulic conductivity and transmissivity were recorded in the western part of the investigated region. Spatial conveyance of Dar Zarrouk parameters and aquifer parameters are helpful in evaluating the examined territory and for finding the favorable area for extraction. This study demonstrates that aquifer properties of coastal area are found to improve while moving away from the drift. Aquifer parameters were calculated using a pumping test and a geophysical technique in the examined zone and they were found to match. The investigation demonstrates that the geo-electrical study is a good alternative for the estimation of aquifer parameters instead of the laborious pumping tests.