Amid India–China Border Tensions, Mega Hydel Project in Arunachal Pradesh Faces Local Heat

On October 23, Adi and Galo communities called a peaceful shutdown in Arunachal Pradesh. They opposed the administration’s decision to continue work on the Upper Siang Multipurpose Storage Project despite local objections. The protest mattered because the proposed dam could affect ancestral land, livelihoods, and the Siang River.

The demonstration escalated after police used tear gas to disperse protesters. A police station, government offices, and the residences of several Bharatiya Janata Party leaders were vandalized in different places. The BJP leads coalition governments in New Delhi and Arunachal Pradesh.

Authorities filed several police cases against key organizers. The unrest occurred as India was also facing border concerns involving China, but the article says the security deployment was unrelated to the border tension. The conflict now combines local opposition, a major infrastructure plan, and wider strategic concerns.

The Upper Siang Multipurpose Storage Project is a proposed hydropower and water-storage project in Arunachal Pradesh’s Upper Siang district. India plans to build it on the Siang River, which flows from Tibet into India. The project is important because officials say it could support energy security, regulate water flow, and moderate floods.

Its strategic importance comes from the river’s upstream course in China. Beijing is developing a much larger hydropower project on the same river at Medog, before it enters Arunachal Pradesh. India sees Upper Siang as a way to respond to China’s control over the river’s upper reaches.

The government has called the project a matter of national interest. However, it says final decisions depend on feasibility assessments. The project still requires further reports, clearances, social-impact assessment, and public hearings if the initial survey finds it feasible.

The proposed Upper Siang Multipurpose Storage Project is planned at 11,200 megawatts. It would combine electricity generation with water storage on the Siang River in Arunachal Pradesh. That makes it one of the central infrastructure proposals in the state’s debate over development, security, and environmental risk.

China’s planned project at Medog has a stated capacity of 60,000 megawatts. Both projects concern the same river system, although China’s facility would stand upstream in Tibet, before the river enters Arunachal Pradesh. Comparing capacity shows the scale of China’s planned intervention: 60,000 megawatts is more than five times 11,200 megawatts.

The difference in size does not remove the strategic importance India assigns to Upper Siang. Indian authorities view it as a way to regulate water flow and counter China’s upstream hydropower ambitions. Local communities remain concerned about its social and environmental effects.

Adi and Galo communities oppose the pre-feasibility survey because they see it as the first step toward a dam they have resisted for more than four years. They want prior and informed consent before any survey activity begins, including drilling. For them, the process itself raises questions about local rights and control.

The survey examines technical feasibility, hydrology, geology, and broad impacts. The Siang Indigenous Farmers’ Forum and other organizations object to these activities. They estimate that 27 villages could be completely submerged if the project is built, with many residents displaced.

Their opposition reflects more than concern about construction. Adi members connect ancestral land, farming, river-based livelihoods, and belief systems. They also describe the region as ecologically and geologically fragile. The government says a feasibility assessment must come first, while residents demand consent before that assessment proceeds.

If built, the dam could submerge 27 villages, according to local organizations. Many residents could be displaced from ancestral land that supports farming and other river-dependent livelihoods. For Adi communities, land is also tied to traditional relationships and cultural identity.

The proposed reservoir and infrastructure would change the landscape around the Siang. Residents say their cosmology and belief systems are connected to land, forests, and rivers. They fear that relocation would therefore mean more than losing homes or farmland; it could disrupt cultural continuity and established ways of life.

Environmental risks add to these concerns. The article describes the region as ecologically and geologically fragile. Dam breaches caused by glacial lake outburst floods, including the catastrophic 2023 event in Sikkim, have intensified local anxiety. The project remains at the pre-feasibility stage, so further assessments and clearances would be required.

The Siang is transboundary because it crosses national and regional boundaries. It begins in China’s Tibet region as the Yarlung Tsangpo, enters Arunachal Pradesh as the Siang, flows through Assam as the Brahmaputra, and then reaches Bangladesh before emptying into the Bay of Bengal.

This connected route gives upstream water projects wider consequences. China is building a 60,000-MW project at Medog, just before the river enters Arunachal Pradesh. India is proposing the 11,200-MW Upper Siang project downstream. Both countries therefore view infrastructure on the river through water, energy, and strategic concerns.

The river’s path also links local protests to regional security. India says Upper Siang could regulate water flow and respond to China’s upstream ambitions. At the same time, Arunachal communities worry about submergence, displacement, and environmental damage. The river’s shared course makes those interests difficult to separate.

A hydropower dam generates electricity by storing or directing water so it can flow through turbines. The moving water turns the turbines, which drive generators. A storage project can also hold water and release it in a controlled way, helping manage river flows and potentially moderate floods.

The Upper Siang proposal illustrates both functions. India describes it as an 11,200-MW hydropower and water-storage project that could regulate the Siang’s flow. Officials also connect it to energy security, flood moderation, and China’s upstream project. These benefits explain why the government calls it nationally important.

The same structure could create serious risks in a fragile Himalayan setting. A large reservoir and dam would alter land, forests, rivers, and settlements. Residents also fear failures linked to extreme events. Glacial lake outburst floods, including the catastrophic 2023 Sikkim incident, have intensified anxiety. Feasibility and environmental reviews are still required.