• K. VInodh
• B. Gowtham

Abstract— This study was established from the electrical resistivity data to determine the groundwater potential zone mapping in Theni district using calculated hydraulic parameters. The parameter transverse resistance (TR) was calculated from the analysed results of 2D electrical resistivity imaging by using Dar-Zarrouk equation. The aquifer transmissivity value computed from the aquifer thickness and transverse resistance value. In this approach was used to calculate geo-electrical based hydraulic parameters (GHP) modelling formulas for the modeling of transmissivity (Tr), hydraulic conductivity (K), storativity (St), and hydraulic diffusivity (D) proper¬ties. The applied GHP modeling equation results to the delineated aquifer media was used to produce aquifer potential conditioning factor maps for Tr, K, St, and D. The maps were modeled to develop an aquifer potential mapping index (APMI) model via applying the multi-criteria decision analysis-analytic hierarchy process principle. The area groundwater reservoir productivity potential model map produced based on the processed APMI model estimates in the GIS environment was found to be 71% accurate. This study establishes a good alternative approach to determine aquifer hy¬draulic parameters even in areas where pumping test information is unavailable using a cost effective geophysical data. The produced map can be explored for hydrological decision making.

Theni district, Dar-Zarrouk equation, geo-electrical based hydraulic parameters (GHP), aquifer potential mapping index (APMI) and multi-criteria decision

"Groundwater potential mapping based on geo-electrical based hydraulic parameters in Theni district, Tamil Nadu", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.52-68, March-2019, Available :http://www.jetir.org/papers/JETIR1903F08.pdf

"Groundwater potential mapping based on geo-electrical based hydraulic parameters in Theni district, Tamil Nadu", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp52-68, March-2019, Available at : http://www.jetir.org/papers/JETIR1903F08.pdf