Meghna River — major channel of the Ganges–Brahmaputra–Meghna delta

Course and tributaries

The Meghna's upper reaches receive the combined flow of rivers draining the Sylhet and greater northeastern basins. Downstream it is joined by several important rivers and distributaries before meeting the Padma (the main lower channel of the Ganges) near Chandpur District. The joined flow then proceeds as the lower Meghna to the estuary system that reaches the Bay of Bengal and exits around the coastal islands near Bhola District.

Major contributing rivers include, among others:

• Dhaleshwari River
• Gumti River
• Feni River
• Upper Surma–Kushiyara channels that feed the system in the northeast

Physical characteristics and ecology

The Meghna becomes very broad as it approaches the delta; in its lower reaches and estuarine zone it opens into a wide, braided and tidal channel system. Widths expand dramatically near the mouth—locally reported to reach around ten to twelve kilometres at flood tide in the estuary—where tidal action and sediment deposition create a network of islands, mudflats and shifting chars. This dynamic environment supports fisheries, especially migratory hilsa and other estuarine species, and a range of wetland and riparian habitats.

Human uses and settlements

The river is central to transportation, local fisheries, irrigation and the livelihoods of riverside communities. Towns and districts along the Meghna rely on its waterways for ferry routes, small-scale trade and seasonal navigation. Chandpur is historically known as a busy confluence town where riverine commerce and fishing have been concentrated; the estuarine zone near Bhola hosts fishing and seasonal agriculture shaped by tidal saline influence.

Floods, navigation hazards and management

Like many large South Asian rivers, the Meghna shows strong seasonal variation. Monsoon rains swell its waters and can cause extensive flooding in adjacent lowlands. The combination of strong currents, tidal influence, sudden sandbars and heavy traffic has made some stretches hazardous for ferries and small craft; there have been notable ferry accidents in the past that drew national attention. Efforts to manage navigation, dredging, embankments and early-warning flood systems continue to be important for improving safety and reducing damage.

Importance and notable distinctions

The Meghna stands out as one of the principal channels shaping the world's largest delta and as one of the widest rivers whose entire course lies within Bangladesh. Its sediment load and tidal exchange help build and rework the deltaic plain, while its fisheries and waterways remain integral to regional food security and transport. For further reading about the river's role in regional hydrology and delta dynamics, see regional river resources and hydrology studies linked from general reference sources such as Padma River materials and district profiles for Chandpur and Bhola.