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Resistivity survey was conducted in 20 locations to cover different lithologies in the study area. Three major zones were delineated as weathered, fractured and massive in hard rock region and top soil, sandy layer and clayey layer in sedimentary region. Interpreted mastercurves are mostly three-layered curves, namely A type followed by H, K and Q type. This study helps us to identify the weathered zone in the hard rock and contaminated zone by anthropogenic impact in the downstream of river Gadilam.

To understand the variation of trace metals such as Iron (Fe), Lead (Pb), Nickel (Ni), Bromide(Br), Iodide (I) and Aluminium (Al) in the study area after the monsoon period, samples were collected and analyzed. The concentration levels of different parameters have been compared with the WHO (1993) standard. Interpretation of data shows that some trace metals such as Al, Ni and Pb exceed the acceptable limit of WHO (1993) standard.