Bangladesh is widely known in the world not only for its level of poverty, but also for its’ proneness to the natural disasters. The major disasters that affect the country almost every year are floods and cyclones. The geographic location is the most contributing factor for the disaster proneness of the country. Bangladesh is the largest delta of the great rivers- the Ganges, the Brahmaputra and the Meghna. It is cris-crossed by over 230 rivers and rivulets. These river systems drain the run-offs from a catchment area of about 1.7 million km, 92.5 percent of which is located outside the country (Banglapedia: 2003). The estimated volume of water flowing through these rivers is about 1500 billion cubic meter, which can form a pool of a depth of about 10.25 meters stagnant water, if accumulated over an area equal to that of Bangladesh.