<P> The Geography of South India comprises the diverse topological and climatic patterns of South India . South India is a peninsula in the shape of a vast inverted triangle, bounded on the west by the Arabian Sea, on the east by the Bay of Bengal and on the north by the Vindhya and Satpura ranges . The line created by the Narmada River and Mahanadi river is the traditional boundary between northern and southern India . Technically all Indian territories below the 20th Parallel . </P> <P> The Satpura ranges define the northern spur of the Deccan plateau, one of the main geographic features of South India . The Western Ghats, along the western coast, mark another boundary of the plateau . The narrow strip of verdant land between the Western Ghats and the Arabian Sea is the Konkan region; the term encompasses the area south of the Narmada as far as Goa . </P>

The river separates india as north and south