Groundwater investigation using Azimuthal square Array method

The azimuthal square array electrical resistivity (DC) surveys were conducted in the Edaikkal, Ambasamudram, Tirunelveli District. The water is an essential part of industrial complex in the sugar cane agriculture development. The study area is 3 square kilometers under thick cover of red soil, gravel, quartzite ridge and hard rock of charnockite in study area. The surveys were carried out using the help of the equipments CRM-500 Aquameter, electrodes and wire spools with accessories. The array is expanded symmetrically about the centre point, in increments of A (2) ¿, So that the sounding can be interpreted as a function of depth. The azimuthal polar plots, litho stratigraphical graphical representation were used to distinguish the depth wise variation of the resistivity change in the study area. From the electrical resistivity study the water bearing zone is occur at depth of 25,75m that range of apparent resistivity from 100-120 Ohm.m in quartzite ridge. he azimuthal square array methods have delineated geological structures of the quartzite ridge.