China’s mega-dam and the weaponisation of water in South Asia - TRT World
Published December 13, 2025
China's Mega-Dam and the Weaponization of Water in South Asia
In recent years, China's ambitious hydropower projects, particularly the construction of mega-dams, have sparked significant geopolitical concerns in South Asia. These developments raise questions about the potential for water to be used as a strategic tool in regional power dynamics. As the world's largest hydropower producer, China has embarked on numerous dam projects, with the most notable being the Three Gorges Dam on the Yangtze River. However, the focus is now shifting toward its influence on transboundary rivers that flow into neighboring countries.
China's extensive dam-building initiatives are not solely about generating electricity; they also play a crucial role in water management and control. The South Asian region, characterized by its reliance on river systems, is particularly vulnerable to the implications of China's water policies. The Brahmaputra River, which flows from Tibet into India and Bangladesh, is one such river that has become a focal point of tension.
As China continues to develop its hydropower infrastructure, it has initiated several projects on the Brahmaputra, including the construction of the Zangmu Dam. This dam is poised to impact the flow of water downstream, raising alarms in India and Bangladesh about potential water shortages. The fear is that China could leverage its control over these water resources for political leverage, especially during times of conflict.
India, which relies heavily on the Brahmaputra for its agricultural and drinking water needs, has expressed concerns regarding the implications of China's dam projects. The Indian government has raised the issue at various international forums, emphasizing the need for cooperation and transparency in managing shared water resources. However, the complexity of water-sharing agreements in the region complicates these discussions.
In addition to the Brahmaputra, China's activities on the Indus River also warrant attention. The Indus, which flows through India and Pakistan, is another critical water source that has been the subject of contention between these two nations. The Indus Waters Treaty, signed in 1960, governs the sharing of water from this river, but China's influence on the upper reaches of the river system poses challenges to this agreement.
The construction of dams and water diversion projects in Tibet has the potential to alter the flow of the Indus, further straining relations between India and Pakistan. As Pakistan grapples with its own water scarcity issues, the prospect of China manipulating water flow for strategic purposes raises alarms about regional stability.
The geopolitical ramifications of China's water projects extend beyond India and Pakistan. Bangladesh, which is situated downstream of both the Brahmaputra and Ganges rivers, is particularly vulnerable to changes in water flow. The country has already experienced the adverse effects of climate change, including rising sea levels and increased flooding. The added pressure of potential water manipulation by China could exacerbate these challenges.
China's growing influence in South Asia is not limited to its dam projects; it is also reflected in its diplomatic and economic engagements with countries in the region. Through initiatives like the Belt and Road Initiative (BRI), China has sought to strengthen its ties with South Asian nations, often providing financial support for infrastructure projects, including hydropower. While these investments can contribute to economic development, they also raise concerns about dependency and the potential for China to exert influence over water resources.
In response to these developments, India has taken steps to bolster its own water management strategies. The government has initiated projects aimed at enhancing water storage and distribution, as well as improving irrigation efficiency. Additionally, India has sought to engage with neighboring countries to foster collaboration on water resource management. However, the effectiveness of these efforts remains to be seen, especially in the face of China's growing assertiveness.
The situation is further complicated by the lack of comprehensive water-sharing agreements in the region. While the Indus Waters Treaty provides a framework for managing the Indus River, similar agreements for the Brahmaputra and other transboundary rivers are lacking. This absence of formal agreements increases the risk of disputes and misunderstandings, particularly as climate change continues to impact water availability.
Experts argue that fostering dialogue and cooperation among South Asian nations is essential to mitigate the risks associated with China's dam projects. Collaborative efforts to establish water-sharing agreements and joint management of river systems could help alleviate tensions and promote sustainable water use. However, achieving consensus among countries with diverse interests and priorities presents a significant challenge.
As China continues to expand its hydropower capabilities, the implications for South Asia's water resources remain a pressing concern. The potential for water to be weaponized in geopolitical conflicts underscores the need for proactive measures to ensure equitable and sustainable management of shared water resources. With the stakes high, the future of water diplomacy in the region will be critical in determining stability and cooperation among South Asian nations.
In conclusion, China's mega-dams and its strategic approach to water management have far-reaching implications for South Asia. As countries in the region navigate the complexities of water-sharing agreements and geopolitical tensions, the need for collaboration and dialogue becomes increasingly important. The future of water resources in South Asia may well depend on the ability of nations to work together in addressing shared challenges and ensuring sustainable access to vital water supplies.