<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2011) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (April 2011) (Learn how and when to remove this template message) </Td> </Tr> <P> The Ganges - Brahmaputra Delta (also known as the Brahmaputra Delta, the Sunderbans Delta or the Bengal Delta) is a river delta in the Bengal region of the South Asia, consisting of Bangladesh and the Indian state of West Bengal . It is the world's largest delta and empties into the Bay of Bengal . It is also one of the most fertile regions in the world, thus earning the nickname The Green Delta . The delta stretches from the Hooghly River on the west to the Meghna River on the east . It is approximately 354 km (220 mi) across at the Bay of Bengal . Kolkata in India and Mongla in Bangladesh are the principal seaports of the delta . </P> <P> A number of large rivers flow through the Brahmaputra Delta, including the Padma (main distributary of the Gangas) and the Jamuna (main distributary of the Brahmaputra), which merge and then join the Meghna before entering the sea . </P>

A delta region has been formed at the mouth of the river ganga