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How do the waters of the Brahmaputra River reach the Bay of Bengal?

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Map showing the course of the Brahmaputra River as it flows from southwestern China through northeastern India and into Bangladesh, with surrounding countries including Bhutan, Nepal, Myanmar, Pakistan, and Afghanistan labeled. The river's path is highlighted in blue, and major international boundaries are marked. — Brahmaputra River Brahmaputra River.

The Brahmaputra River reaches the Bay of Bengal through a complex journey across Asia, ultimately merging with other major waterways to form a vast delta system.12

After flowing through Tibet and India, the river enters Bangladesh, where it is known as the Jamuna River. It then joins the Ganges River north of Goalundo Ghat; their combined waters flow southeast as the Padma River. Before reaching the sea, the Padma converges with the Meghna River near Chandpur.1

The final discharge into the Bay of Bengal occurs primarily through the Meghna estuary and various smaller channels that weave through the Ganges-Brahmaputra delta. This massive river system, which includes the Sundarbans forest and swamp region, is shaped significantly by tidal processes as it empties into the ocean.1