Water resources in India are unevenly distributed in spatial and temporal domains. This puts us into imperative situation to find a solution that could encourage a sustainable management of groundwater. Keeping this view, the present study attempts to select and delineate various groundwater potential zones for the assessment of groundwater availability in a sub-basin of Kodyar (of South Tamil Nadu, India) using RS(Remote Sensing)and GIS(Geographical Information System) technique. Survey of India toposheets and IRS-1C, LISS IV RESOURCESAT-1, satellite data sets were analyzed to generate various thematic maps, like geological, geomorphological, lineament density, drainage density, and land use map. The thematic layers that are in vector format were converted into raster format and loaded into GIS environment .On the basis of relative contribution of each of these maps towards groundwater potential, the weight of each thematic map has been selected. Further, within each thematic map ranking has been made for each of the features. Ground water potential zones were identified by overlaying all the thematic maps in terms of weighted overlay methods using the spatial analysis tool in ArcGIS 9.3. On the basis of this final weight and ranking, the ground water potential zones have been delineated. The generated map was categorized into ‘very good’, ‘good’, ‘moderate’ and ‘poor’. The results obtained can be used for accomplishing a sustainable management of groundwater resources. © 2014 Cafet-Innova technical society.