Published Paper Details:

ABSTRACT Historically, human settlements followed land terraces and banks close to watercourses, but avoided main riverbeds because of flood risks. Especially during recent decades, enlarging human settlements like cities broke this habit and extended themselves within riverbeds, with the help of grand works of river regularization. In the same period, intense local and regional deforestation changed the flow regimes of large river basins, in the sense that rivers increased basic and flood volumes of waters. By the time human settlements and agglomerations already went a long way in incorporating riverbeds, changes in hydrological regimes determined that river systems found their old natural course and flooded the primary river beds. Of all natural disasters, floods and Cyclones are the most devastating in Tamil Nadu. They often involve loss of human life and extensive material damage. This paper explains Sea Level Change and Losses through Natural Disaster- Some Remarks from Experience in the Port Cities during Ancient Tamil Nadu.