Bangladesh’s 1,415 Rivers Face Growing Pressure from Pollution, Encroachment and Siltation

Bangladesh’s latest official inventory lists 1,415 rivers, highlighting the extraordinary scale of the water network that has shaped the country’s geography, economy and communities for generations. Yet environmental experts say the number alone provides only a partial picture, as many waterways continue to face pollution, encroachment, declining flows and sedimentation.

The government published the updated river list on April 14, 2025. The National River Conservation Commission said the inventory was prepared with input from the Ministry of Water Resources, Bangladesh Water Development Board, local administrations and other stakeholders. The figure of 1,415 rivers was later reiterated in Parliament in June 2026.

The challenge now is determining the ecological condition of those rivers and ensuring that officially recognised waterways continue to function as healthy river systems. Experts cited in reporting around World Rivers Day have called for a comprehensive national database that goes beyond river names and locations to include boundaries, water flow, water quality, navigability, encroachment and ecological conditions.

Rivers surrounding Dhaka are among those facing some of the most visible pressures. The Buriganga, Turag, Balu and Shitalakkhya have been affected over the years by industrial discharge, untreated sewage, solid waste, rapid urban development and occupation of riverbanks. The Buriganga, historically central to Dhaka’s transport and trade, remains a prominent example of the environmental challenges confronting urban waterways.

Similar concerns extend beyond the capital. The Karnaphuli, which is closely connected with Chattogram and the country’s main seaport, faces pressure from urbanisation, industrial activity, waste and port-related development. The Halda, known for its ecological importance as a natural breeding ground for freshwater fish, is also vulnerable to pollution and disruptions to its aquatic environment.

Siltation is another major concern across Bangladesh. Excess sediment can reduce river depth, obstruct navigation, disrupt drainage and contribute to waterlogging. The Kopotakkho in southwestern Bangladesh is among the waterways associated with longstanding drainage and navigability problems.
Although dredging is frequently used to restore depth, water specialists argue that excavation alone cannot provide a lasting solution. Effective restoration requires analysis of sediment movement, upstream water conditions, river morphology and the connections among rivers, canals, wetlands and floodplains. Without addressing the underlying causes of disrupted flow and sediment accumulation, dredging may deliver only temporary improvements.

Bangladesh’s river management challenges also have a significant cross-border dimension. The Joint Rivers Commission identifies 57 transboundary rivers connected with Bangladesh—54 shared with India and three with Myanmar. As a downstream country, Bangladesh can be affected by changes in upstream flows and water-management decisions.

Climate-related pressures add further complexity. Changing rainfall patterns, flooding, sea-level rise and salinity intrusion can affect freshwater systems, agriculture and drinking-water sources, particularly in vulnerable regions. Environmental specialists also caution that climate change should not obscure human-driven problems such as pollution, riverbank occupation, poorly planned infrastructure and inadequate water management.

Water experts have therefore called for river management to focus on entire basins rather than treating individual waterways in isolation. Such an approach would consider the links between rivers, wetlands, canals, floodplains and urban drainage systems while protecting the natural movement of water.

Bangladesh already has an important legal framework for river protection. In the landmark Turag River case, the High Court declared the Turag a legal person, legal entity and living entity, and extended the same status to all rivers flowing in and through Bangladesh. The court also designated the National River Conservation Commission as the legal guardian responsible for their protection and conservation.

However, legal recognition alone has not eliminated the environmental pressures facing the country’s waterways. Specialists and river campaigners continue to call for stronger enforcement against pollution and encroachment, accurate digital mapping, scientific monitoring and greater coordination among government agencies, industries, local authorities and communities. 

For Bangladesh, where rivers support agriculture, fisheries, transportation, biodiversity and millions of livelihoods, the central question is increasingly not simply how many rivers exist. The larger challenge is whether the country can preserve their natural flows, ecological functions and connections with the communities that depend on them.