Groundwater is being pumped extensively from the coastal part of Arani and Koratalai River Basin, Tamil Nadu, India for irrigation and water supply to the Chennai city. The objective of this study is to delineate the groundwater potential zones of this area using Remote Sensing (RS) and Geographic Information System (GIS) techniques. The weighted overlay analysis was used to demarcate the groundwater potential zones. Various thematic layers such as geology, geomorphology, soil, lineament density, drainage density, rainfall and landuse maps were prepared. The geological map was prepared by using Geological Survey of India (GSI) district resource map. Indian Remote Sensing System Linear Imaging Self-scanning Sensor III (IRS-1D LISS III) satellite imagery was used to prepare the geomorphology, soil, lineament density, drainage density and landuse maps. Based of assigning appropriate weightage to different thematic maps and adding them the final groundwater potential map was prepared. The groundwater level and location of well fields were overlaid over the derived groundwater potential map for validation. The map prepared will help in systematic and proper development of groundwater resource in this area to meet the growing of water requirements of the Chennai city.