ABSTRACT
Groundwater is an important resource for sustaining agriculture in India and many other parts of the world. The country, with its population crossing the 1.25 billion mark, is also dependent on this resource for meeting its drinking requirements. The availability of noncontaminated groundwater requires the use of efficient methods for locating potential aquifers. Owing to such reasons, the use of geophysical methods has been playing an increasingly important role in groundwater exploration. Surface electrical resistivity methods of groundwater investigation are one of the most powerful techniques for locating aquifers up to depths of a few hundred meters. The judicial use of the resistivity methods enables selection and pinpointing of borehole sites for locating productive aquifers containing quality groundwater. An optimum combination of drilling and geophysical resistivity investigations can provide reliable data for delineation of viable aquifers on a regional basis.
