Brahmaputra River branch, which contains the majority of the river's flow, continues due south as the Jamuna () to merge with the lower Ganga, called the Padma River (). The eastern branch, formerly the larger, but now much smaller, is called the lower or old Brahmaputra (). It curves southeast to join the Meghna River near Dhaka. The Padma and Meghna converge near Chandpur and flow out into the Bay of Bengal. This final part of the river is called Meghna. The Brahmaputra enters the plains of Bangladesh after turning south around the Garo Hills below Dhuburi, India. After flowing past Chilmari,
Daman Ganga River joins the sea at Daman, it is named Daman Ganga. At the estuary there is heavy sedimentation and hence the depth of water is shallow. Daman is located on both banks of the river (Portuguese name: Rio Sandalcalo). At the mouth of the river the bar is level bed made of hard sand, except for the North of the North point where the river enters the sea. The river basin (part of the basin of West flowing rivers from Tapi to Tadri), which lies entirely on the western ghats, has a total catchment area of . Catchment area distribution is: