Accross the Tropic of Cancer Bangladesh extends between 20°34' and 26°38' north latitudes, and between 88°01' and 92-41' east longitudes. It is almost surrounded by Indian territory except for a small strip of frontier with Burma on the southeast and the southern border fronting the Bay of Bengal. It has an area of about 144,000 sq.km most of which is relaively flat lying in the deltaic plain of the Ganges-Brahmaputra-Meghna river system. The only significant uplands occur in the northeast and southeast of the country with average elevations of 244m and 610m respectively. The country is covered with network of numerous rivers and canals forming a maize of interconnecting channels.
