The Rupsa is a river in southwestern Bangladesh and a distributary of the Ganges.
[1] The Rupsa flows by Khulna, and connects to the Bay of Bengal through Poshur river at Mongla channel.
Near Chalna, it changes its name to Pasur River and flows into the Bay of Bengal.
A significant number of fisheries, dockyards, shipyards and factories are situated along the banks of this river.
A considerable population depends on catching fish in the river.