In South Asia, rivers no longer flow only through geography; they also flow through diplomacy, security calculations and political disputes. As climate change intensifies and water demand rises, control over shared rivers is becoming one of the region’s most consequential strategic questions. Though for a long-time water was considered a common good in South Asia, this is no longer the case: rivers are now included in strategy, planning and power. Water has moved from the periphery to the centre of political thought wherever it is found.
This is especially true for transboundary rivers such as the Ganges, Brahmaputra, and Indus that support the lives of millions of people across the region and provide water for agriculture, drinking, fisheries and economic activity. Changes in river flow can have significant downstream consequences. Farmers face uncertainty while cities seek assurances that communities further downstream will not suffer from salinity intrusion, erosion or water shortages.
The most prominent example is the Farakka Barrage on the Ganges in India. It impacts river flow, dry-season water availability and downstream effects. It has been discussed in Bangladesh for decades. Flow reductions during dry months can contribute to salinisation problems in coastal areas. Moreover, it affects agricultural productivity. Water sharing is not simply a question of technical management. It becomes a question of equity, trust and long-term sustainability. Other instances throughout the region include the lack of agreement between India and Bangladesh over the distribution of the Teesta River, despite negotiations. Meanwhile, hydropower and water diversion projects on the upper Brahmaputra have led to concerns about transparency and future security.
The Himalayas are home to many dams, diversions and hydropower projects. Most of them are pursued in the name of development and often provide significant benefits. Yet they also raise legitimate concerns for affected countries, particularly when information is limited and communication is inadequate. Development will turn into a mockery if it fails to gain trust among neighbouring states.
With climate change bringing irregular rainfall patterns and glacial melting, such floods are heavier some years than others, an indication that trends are weakening the very basis of past river governance. South Asia needs river governance that prepares for changes, rather than a power play predicated on past political behaviour and an assumption that climate will remain the same.
This should lead to much closer cooperation between riparian countries, especially in the area of sharing hydrological information‚ strengthening river commissions and making long-term plans to respond to shifts in climate and the increasing pressure of water demand. Agreements between riparian countries should be flexible enough to adapt to future climate shocks and should recognise that all those who live along the river’s banks share it.
Bangladesh has its interests as a delta country, particularly in relation to irrigation, navigation, and energy. It depends on upstream flows, which makes it especially vulnerable. Even small variations in water availability can affect agriculture, fisheries, drinking water supplies and soil quality. The challenge is not to deny the development needs of upstream states. The challenge is to manage those needs in a manner that also protects communities further downstream.
This is where South Asia must think in a different way. Water should not be treated as a quiet instrument of pressure. It should be viewed as a shared responsibility. A river system that connects millions of people cannot be reduced to a narrow strategic advantage. When trust in the management of shared waters erodes, ordinary people bear the consequences first.
The better path is clear. South Asia needs river governance grounded in cooperation, transparency and restraint. The region requires leadership that understands that controlling a river is not the same as securing its future. The rivers of South Asia connect nearly two billion people. They can either become channels of cooperation or fault lines of future conflict. The choice will not be made by geography but by politics.
The writer is an Undergraduate student, Department of International Relations, University of Dhaka, and, Congresswoman of Japan Study Club-DUIRJSC. E-mail: [email protected]
