China's ₹1.2 trillion yuan (approximately $170 billion) hydropower complex on the Yarlung Tsangpo River in southeastern Tibet faces mounting safety scrutiny, according to a report in The National Interest, as a succession of natural disasters highlights the extreme geological hazards of the Himalayan region — and the downstream risks they pose to millions of people in India and Bangladesh.

The October Earthquake That Renewed the Alarm

On 22 October 2026, a magnitude 7.0 earthquake struck Baqing County in Nagqu, Tibet, killing at least 16 people, injuring dozens, and destroying hundreds of homes. According to the US Geological Survey (USGS), the earthquake resulted from movement along a normal fault within the Tibetan Plateau, where the ongoing collision of the Indian and Eurasian tectonic plates generates enormous geological stress, continuing to push the plateau upward while stretching it eastward and westward.

The report stresses that this was no isolated event. Since 1900, the Tibetan Plateau and surrounding areas have recorded 29 earthquakes of magnitude 7.0 or greater. The catastrophic 1950 Assam-Tibet earthquake reached magnitude 8.6 and killed 4,800 people, while the 2010 Yushu earthquake in neighbouring Qinghai claimed more than 2,500 lives. The Himalayas and Tibetan Plateau, according to the report, remain among the world's most geologically unstable regions.

A Second Disaster, a Compounding Pattern

The October earthquake came less than two months after a separate catastrophe in the same mountain system. On 26 August 2026, a massive collapse of glacier ice and rock near the Nepal-Tibet border triggered a destructive surge of water, mud, and boulders. The two events — one seismic, one glaciogenic — are described in the report as illustrating 'different aspects of the same underlying vulnerability.'

Notably, neither disaster occurred at the hydropower project site itself. Yet experts cited in the report argue that both underscore the range of geological and environmental hazards that major infrastructure throughout the Himalayas must be engineered to withstand.

The Scale of China's Yarlung Tsangpo Project

Launched in July 2025, China's Yarlung Tsangpo hydropower complex is described as one of the most ambitious infrastructure undertakings in recorded history. The project involves five cascading hydropower stations designed to exploit the river's extraordinary energy potential before it crosses into India, where it becomes the Brahmaputra River and flows through Bangladesh into the Bay of Bengal. The estimated investment stands at 1.2 trillion yuan (roughly $170 billion).

The report raises the central concern plainly: the safety of China's upstream engineering is directly linked to the lives and livelihoods of millions downstream across two sovereign nations.

Prehistoric Floods and What the Geological Record Shows

Research published in 2026 in the journal Palaeogeography, Palaeoclimatology, Palaeoecology — cited in The National Interest report — identified six devastating prehistoric floods in the Yarlung Tsangpo Gorge system, each triggered by natural dam failures. The findings suggest that the threat of exceptionally large floods is not a hypothetical engineering scenario but a pattern embedded in the river's geological past.

This comes amid broader international concerns about transparency in the project's design and safety protocols, with India having repeatedly sought assurances from Beijing over the Brahmaputra's downstream flow management.

What Comes Next

With construction under way and the first of the five stations yet to come online, scrutiny from hydrologists, geophysicists, and downstream governments is only expected to intensify. Whether China will share real-time seismic and hydrological monitoring data with India and Bangladesh — as international norms for transboundary rivers suggest — remains an open and unresolved question.