China’s decision to proceed with a large-scale hydropower project on the Yarlung Tsangpo river in Tibet has sparked growing concern among experts and policymakers in India. The river, one of the highest in the world, flows from the Tibetan Plateau into India, where it is known as the Brahmaputra, before continuing into Bangladesh. Any major intervention upstream is seen as having potential consequences for water availability, ecology, and livelihoods in downstream regions.
According to international media reports, the proposed hydropower project is estimated to cost around 168 billion dollars and is expected to become the world’s largest dam system. The plan involves harnessing the river’s steep 2,000-metre drop in altitude through a network of dams, reservoirs, tunnels, and underground power stations. Once completed, the project is expected to generate enormous amounts of electricity to support China’s energy needs.
Experts in India have raised concerns that such a massive infrastructure project could alter the natural flow of the river. Changes in seasonal water release may affect agriculture, fisheries, and drinking water supplies in northeastern India, where millions of people depend on the Brahmaputra basin. Environmentalists also warn that the region’s fragile Himalayan ecosystem could be put at risk due to sediment disruption and habitat loss.
Another major concern is flood management. The Brahmaputra is known for its annual flooding, which, while destructive at times, also replenishes soil fertility. Sudden or uncoordinated water releases from upstream reservoirs could increase the risk of severe flooding downstream. Conversely, reduced water flow during dry seasons could worsen water scarcity in already vulnerable regions.
Indian officials have consistently emphasized the need for transparency and data-sharing between upstream and downstream countries. While China has maintained that the project is intended for power generation and flood control, experts argue that the lack of binding water-sharing agreements between the two countries adds to India’s strategic and environmental concerns.
The geopolitical dimension of the project is also being closely watched. Control over transboundary rivers is increasingly viewed as a strategic issue, particularly in regions where water resources are critical for food security and economic stability. Analysts note that long-term changes in river flow could impact India’s planning for irrigation, hydropower, and disaster management.
India has called for sustained dialogue and scientific cooperation to assess the downstream impact of the project. Environmental experts stress that any large-scale construction in the Himalayan region must account for seismic risks, as the area is prone to earthquakes.
As construction plans move forward, the mega dam project on the Yarlung Tsangpo continues to raise important questions about environmental sustainability, regional cooperation, and the management of shared natural resources in South Asia.
