The Buriganga River

Dhaka is a mega city and one of the major city of South Asia which is located in Central Bangladesh at 23 degree42'0''N ,90 degree 22'30''E,on the eastern banks of the Buriganga river.The length of Buriganga river is 45km,the width is 265m and the depth is 14m.At past ,a course of the Ganges river used to reach the Bay of Bengal through the Dhaleswari river .This course gradually shifted and ultimately lost its link with it ,the main channel of the Ganges  was renamed as the Buriganga.The Buriganga is threatened by pollution.The water tables even is very astonishing due to pollution of polythene's deposit beneath water.The material from breaking of building of the river banks also add hazardous substance in the river.Unfortunately ,the river is Dhaka's main outlet of sewage waste.Newspaper articles in 2004,indicated that up to 80% of Dhaka 's sewage was untreated.A number of industries ,including tanneries also discharge their chemical waste in to river water flow in the Buriganga is low expect during the Monsoon season.During this flood period the river is "flushed" every year.