Bangladesh being an alluvial deltaic plain is divided into three zones, namely hills, terraces and flood plain. The country has an approximate area of 147,570 sq.km bounded between 20°34’ to 26°38’N latitude and 88°01’ to 92°41’E longitude and has 4,685 km. long unique geographical location forming a lower part of the basins of three mighty rivers of Padma, the Brahmaputra and the Meghna. Bangladesh with its fragile state of economy depends predominantly on agriculture that has strong linkage with seasonal weather systems. Due to the geographical location, the country frequently suffers from devastating natural hazards of which, floods, cyclones with accompanying storm surges, tornadoes, river-bank erosion, drought and earthquakes are the most disastrous to mention. Bangladesh being in close proximity with the Himalayas, the country has a long history of seismic tremors. Four great earthquakes of magnitude exceeding 8 during 1897, 1905, 1934, 1950 and another 10 earthquakes exceeding magnitude belt during the last 100 years. The colossal losses of lives and properties caused by natural disasters with repeated frequency in short intervals make Bangladesh as one of the most disaster prone countries in the world.

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