China Advances Brahmaputra Mega-Dam Construction in 15th Five-Year Plan

China confirmed it is moving forward with the construction of a massive hydropower dam on the lower reaches of the Yarlung Zangbo (Brahmaputra) River in Tibet. Dubbed by Beijing as a "project of the century," the hydropower installation has been officially integrated into China’s 15th Five-Year Plan for renewable energy, sparking serious geopolitical and environmental concerns downstream in India and Bangladesh.

The Brahmaputra originates in Tibet, flowing east before turning south through Arunachal Pradesh (as Siang) and Assam, eventually joining the Ganges in Bangladesh. India has long voiced apprehensions over China’s "run-of-the-river" projects along transboundary rivers due to potential reduction in lean-season water flows, risk of artificial flash floods, and data-sharing opacity during critical monsoon periods under current bilateral hydrological agreements.

Key technical details indicate that the proposed dam site at Medog, near the Great Bend of the Yarlung Zangbo, possesses a power generation potential of 60 gigawatts (GW)—nearly triple the capacity of China's Three Gorges Dam. Located in a highly sensitive seismic zone (Zone V equivalent) close to the Line of Actual Control (LAC), any structural breach poses severe flooding risks to Arunachal Pradesh and Assam.

For competitive exams, this news touches International Relations, Environmental Security, and Geography. Prelims questions frequently test transboundary river tributaries (Lhit, Subansiri, Dibang), hydro-diplomacy accords, and geographical features like the Namcha Barwa peak. Mains GS-Paper II and III questions will examine hydro-hegemony in South Asia, ecological risks in fragile Himalayan geology, and India's counter-strategy of building upper-Siang storage reservoirs.