River of Surma

Surma River:

A Map showing major rivers in Bangladesh including Surma.

The Surma River (Bengali: সুরমা নদী Shurma Nodi) is a major river in Bangladesh, part of the Surma-Meghna River System. It starts when the Barak River from northeast India divides at the Bangladesh border into the Surma and the Kushiyara rivers. It ends in Kishoreganj District, above Bhairab Bazar, where the two rivers rejoin to form the Meghna River. The waters from the river ultimately flow into the Bay of Bengal.
The average depth of river is 282 feet (86 m) and maximum depth is 550 feet (170 m).

Surma

Main article: Surma River

After entering into modern Karimganj District in south Assam, Barak divides in two, with the northern branch being called the Surma River and the southern the Kushiyara River. At this point the river enters the Sylhet Depression (or trough) which forms the Surma Basin.^[1]

The Surma is fed by tributaries from the Meghalaya Hills to the north, and is also known as the Baulai River after it is joined by the south-flowing Someswari River.
The Kushiyara receives tributaries from the Sylhet Hills and Tripura Hills to the south, the principal one from the Tripura Hills being the Manu. The Kushiyara is also known as the Kalni River after it is joined by a major offshoot (distributary) from the Surma. When the Surma and the Kushiyara finally rejoin in Kishoreganj District above Bhairab Bazar, the river is known as the Meghna River.

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