Groundwater prospecting in a part of Tamirabarani River basin, South India using Remote Sensing and GIS

Abstract

Integrated studies of multi-spectral remote sensing data, GIS and field investigations have been used in delineating groundwater potential zones in a part of Tirunelveli district, Tamil Nadu, India. FCC image of IRS 1D LISS III data and Survey of India toposheets have been used to prepare various thematic maps viz., topography, drainage, geology, geomorphology, lineament, slope, land use map of the study area. The regional slope of the terrain is towards northeast. Groundwater in the area is phreatic conditions in weathered horizons and in alluvial formations. A groundwater potential zonation map has been generated by assigning proper weightages and ranks to various parameters. Flood plains and lineament intersections are possessing high groundwater potential. Pediments, however, possess moderate to poor groundwater potential. The potential map has been verified by ground checks.