India’s geopolitical bid to check Chinese dominance in the Himalayas has run into fierce grassroots resistance, with Indigenous communities in the north-east mobilising against a colossal hydro-electric dam on ancestral lands.
The proposed Siang Upper Multipurpose Project, earmarked for the remote state of Arunachal Pradesh, is envisioned as New Delhi’s grandest engineering feat. Slated to generate roughly 11,000 megawatts of electricity, the installation carries an estimated price tag exceeding $22 billion AUD. Yet, as Al Jazeera reported, the frontier mega-project has triggered a concerted revolt among the region’s traditional inhabitants, who warn the reservoir will submerge ancient settlements, sacred sites, and fragile river systems.
Strategic hydro-race along the frontier
The dam is fundamentally driven by high-stakes strategic rivalries rather than domestic power needs alone. Across the contested Line of Actual Control, Beijing is advancing plans for its own colossal hydropower complex on the Great Bend of the Yarlung Tsangpo—the river that flows downstream into India as the Siang and eventually the Brahmaputra.
Indian defence planners fear Beijing could weaponise upstream water flows, either by choking supply during dry seasons or releasing catastrophic torrents during hostilities. By erecting a massive reservoir downstream, New Delhi hopes to secure formal prior-user rights under international norms and cushion the country’s north-east against deliberate or accidental surges. However, this strategic game of chess has left little room for the democratic consent of those living in the river basin.
Indigenous homeland under water
Resistance has coalesced around the Adi people, the Indigenous group whose livelihoods and spiritual traditions are inextricably bound to the free-flowing Siang. Village councils have barred government surveyors, staged highway blockades, and publicly burned consultation notices.
Al Jazeera reported that community leaders view the mega-dam as an existential threat to their culture. Anti-dam activists have maintained that financial compensation cannot replace ancestral territories, warning that tens of thousands of residents face permanent displacement. Scepticism towards central government assurances runs deep, with villagers pointing to India's historical record of unfulfilled rehabilitation promises on earlier major water infrastructure initiatives.
Seismic volatility and ecological peril
Beyond cultural devastation, geologists have questioned the wisdom of constructing mega-dams in the seismically active eastern Himalayas. The region regularly suffers high-magnitude earthquakes, landslides, and flash flooding. Critics warn that impounding billions of tonnes of water behind a massive concrete wall creates an unacceptable downstream risk for lower Arunachal Pradesh and the neighbouring plains of Assam.
The environmental stakes are equally acute. The Siang basin supports one of Asia's most vital biodiversity hotspots, home to rare riverine ecosystems and endangered flora that would be irrevocably altered by altered silt flows and artificial hydrological cycles.
New Delhi’s frontier dilemma
The dispute highlights a recurring dilemma for the administration in New Delhi, which has long treated the north-eastern frontier through the prism of national security. Arunachal Pradesh remains largely claimed by Beijing, which labels the territory southern Tibet and regularly objects to Indian development there.
By riding roughshod over domestic landholders to counter a foreign adversary, the Indian government risks alienating the very frontier populations whose loyalty has historically formed the bedrock of India's territorial sovereignty.