Application of conductance phenomenon in groundwater studies

In this article, we present an interesting behaviour of conductance in a basaltic terrain. We use vertical electrical sounding data carried out in Wenner configuration at dug well sites for data analysis. Geophysical phenomena observed in the sharply rising trends followed by negligibly rising trends of the conductance curves are discussed. The unique behaviour of conductance curve is used to estimate depth to the static water level in dug wells. The geophysically estimated depths to the static water levels are compared with the observed static water levels in the existing dug wells located at all sites of investigation. Water-level fluctuations observed in dug wells between two different periods coinciding with pre- and post-monsoon regimes are geophysically estimated by using the trends on the conductance curves. Depth to the static water levels is geophysically estimated at seven experimental sites located adjacent to dug wells and four virgin sites where there are no dug wells. Validation of the geophysically estimated static water levels and static water-level fluctuations shows encouraging results.