Increasing anthropogenic activities in sensitive coastal environments has drawn a global attention in present era and protecting coastal zones from over exploitation has become a subject to remarkable stress in coastal management of India. Several studies has already described that Remote Sensing (RS) and Geographic Information System (GIS) are combined and advanced decision support system for storing, structuring and analyzing any information in a scientific way. The present paper provides an overview of GIS application for conserving natural resources and making a smart coastal area in India. It is also described that how a decision support system can be developed for monitoring & outlaying any coastal area to plan out the various activities along the coastal zones. The GIS technology was used here to provide the information for micro and macro level spatial planning of natural resources of coastal areas in India on a sustainable basis. For mapping, monitoring and indexing the study area ArcMap and ArcScene, two basic and powerful platforms of ArcGIS software were used. With the help of tools in ArcTool box like 3D analyst, Spatial analyst, Multidimension tools etc. and respective methods like Raster interpolation, Raster surface, Extraction were applied for geographical referencing, projecting the area and generating contour lines.