New Delhi's proposed Siang multipurpose project in Arunachal Pradesh faces growing opposition from local Adi communities due to environmental risks and potential displacement. Designed partly to counter Chinese upstream dam building along the Yarlung Tsangpo, the project threatens to submerge 27 villages and displace roughly 150,000 residents. Himalayan geology remains acutely fragile.
Recent catastrophic events, including the August 2026 Nepal flood that killed hundreds and major glacial collapses in Tibet, demonstrate the severe vulnerability of high-altitude mega-infrastructure. Rapid warming in the Himalayas, occurring at twice the global average rate, accelerates permafrost degradation and destabilises mountain slopes. Despite local protests and warnings from Chief Minister Pema Khandu regarding downstream river depletion, Indian authorities are enforcing pre-construction surveys using Central Armed Police Forces. The state priority on geopolitical hedging against Beijing creates intense domestic friction, as indigenous groups challenge the absence of free, prior, and informed consent amidst escalating disaster risks.