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The South Indian coastline experienced the most devastating tsunami on 26 December 2004, with run-up height (maximum vertical height) of 10.5 m. Possibility of a similar event in the near future is now being postulated. This work describes the run-up elevation maps prepared using SRTM (Shuttle Radar Topographic Mission) Digital Elevation Model (DEM) and geomorphic details derived from satellite images, showing the probable areas of inundation due to various wave-heights along parts of Kerala coast. These areas include the Bharathapuzha estuary, Periyar estuary, Vembanadu Lake and certain low-lying mudflats of Kuttanadu. It is also evident that the Beach ridge complexes seen in the satellite images and SRTM DEM, could act as a buffer against waves up to 10 m height. Thus, the inundation maps derived from SRTM DEM can serve as a good input for mapping vulnerable areas. [ABSTRACT FROM AUTHOR]