Why do shifting river channels make settlement difficult along the Jamuna River?

Settlement along the Jamuna River is difficult primarily because the river’s channel is notoriously unstable and subject to constant, rapid changes. The river is never in exactly the same location for two successive years, as it undergoes continuous erosion and the deposition of silt.12

This dynamic environment creates several challenges for human habitation:

• Land Instability: The constant shifting of the riverbed leads to the seasonal appearance and disappearance of islands and newly deposited lands, known as chars.2
• Flooding: The region experiences extensive annual flooding during the summer monsoon, which can ruin hamlets and damage crops.21
• Communication Barriers: The river’s shifting nature and its adjoining channels inhibit reliable communication between northern Bangladesh and the eastern region where Dhaka is located.1

While these fertile silt deposits are valuable for cultivation, the unpredictable nature of the river makes permanent settlement along its banks highly precarious.21