Correlation study between geoelectrical and aquifer parameters in West coast laterites

Abstract

The objective of this study was to develop surface electrical resistivity technique for estimating hydraulic conductivity of lateritic aquifer in the Konkan coastal laterites of Goa. Aquifer electrical resistivities were determined from the results of Schlumberger electrical soundings at three sites in Tericol area, North Goa where three pumping test data was gathered at the same time. Hydraulic conductivities and transmissivities determined from pumping tests were then correlated with true resistivities obtained from interpreted electrical sounding data. Results indicate that true electrical resistivities of aquifers determined from sounding can be used to predict fairly accurate aquifer hydraulic conductivities. Empirical relations between electrical resistivity and aquifer hydraulic conductivity and transverse resistance and transmissivity were developed for lateritic aquifers.