**3.1.2 Methodology**

The resistivity survey was carried out using the multi-electrode resistivity technique. The surveys at all the 4 locations were carried out using the Dipole-Dipole configuration with the unit electrode spacing ranging from 2.5 meters to 5 meters depending upon the ground clearance using the SYSCAL-Pro 72 unit. RES2DINV Software, (Loke, 2002) was used for inverting the apparent resistivity values to a resistivity model section. The least square fitting technique (Loke and Barker, 1996) was used for getting the best fit for the resistivity model by iterations.
