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Himalayan Water: Will it Fuel Asia's Next Conflict?

Or a $4 trillion boom?

Feb 9, 2026 · 5 min read

60B m³

Water China plans to divert annually from the Yarlung Tsangpo — the Brahmaputra's origin

China's South-North Water Transfer Project already redirects 44 billion cubic meters of water a year, redrawing the region's hydrological balance well before its next phase is finished. Plans to divert a further 60 billion cubic meters from the Yarlung Tsangpo — the river that becomes the Brahmaputra once it crosses into India — raise the stakes considerably for downstream flow into India and Bangladesh.

India's response is taking shape at the Great Bend. The Upper Siang project, an 11 GW dam rising to 296 meters, would be India's tallest, creating a 1,000 sq km reservoir sited deliberately at the Brahmaputra's entry point to preserve historical water-flow rights and neutralize both flood risk and scarcity from upstream cascading dams.

Framed as pure rivalry, this is a conflict story. Framed as infrastructure, it's closer to a $4 trillion question: whether the same rivers become a flashpoint or the backbone of a shared, monetized water-and-power system — carbon credits, hydropower exports, and flood-loss avoidance included.

A shared Himalayan water-data network between India, China, Nepal, and Bhutan remains the cheapest available option to bend that outcome toward the second scenario. It still doesn't exist.

44B m³

Already diverted annually by China's South–North project

11 GW

Upper Siang's planned capacity, India's largest hydro asset

Source: Chinese Ministry of Water Resources (2024); Reuters (2023); China Water Resources Bulletin (2024); NITI Aayog Hydro Task Force Report (2026); World Bank South Asia Water Initiative (2023)

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