Siang Megadam Protests, Arunachal Border Security and Brahmaputra Hydropolitics

Context

Protests in Arunachal Pradesh against the proposed Siang hydropower project have emerged alongside renewed concerns over Chinese activities near the India China border. The project is partly being viewed as a strategic response to China’s upstream hydropower development plans on the Yarlung Tsangpo River. This has brought issues of transboundary water security, regional security and the rights of local communities into focus.

Key Highlights

• Protesters demanded the release of individuals detained following demonstrations against the proposed Siang Upper Multipurpose Project.
• Reports by The Indian Express highlighted concerns regarding repeated border transgressions and patrolling activities in Arunachal Pradesh.
• The Yarlung Tsangpo flows into India as the Siang River and subsequently becomes the Brahmaputra after merging with other rivers.
• Large hydropower projects can support electricity generation and water storage. However, they also raise concerns regarding seismic hazards, displacement, downstream ecological changes and community consent.

Key Concepts

• Transboundary River: A river that flows across the territories of multiple countries. Unilateral decisions regarding water storage or diversion can have consequences for downstream countries and regions.
• Brahmaputra Basin: The Yarlung Tsangpo Siang Brahmaputra river system sustains extensive Himalayan and northeastern ecosystems, along with the livelihoods of communities dependent on the basin.
• Environmental Impact Assessment (EIA): A systematic process for identifying and addressing the potential environmental consequences of proposed projects. It may include an assessment of cumulative impacts across the river basin, depending on applicable legal and regulatory requirements.
• Free, Prior and Informed Participation: A rights based approach to development planning that requires meaningful consultation with affected communities. Specific legal obligations depend on the applicable land, forest and tribal governance frameworks.
• Run of River vs Storage Hydropower: Run of river projects primarily utilise the natural flow of rivers with relatively limited storage capacity. Storage based hydropower projects use reservoirs to regulate water discharge, thereby influencing river ecology and displacement patterns.

Way Forward

• Conduct transparent assessments of cumulative risks across the river basin, including downstream environmental and social impacts.
• Ensure the meaningful participation of affected Indigenous communities in project planning, rehabilitation and resettlement decisions.
• Strengthen bilateral cooperation with China through hydrological data sharing mechanisms and flood warning arrangements.
• Ensure that strategic and national security considerations do not replace or undermine environmental safeguards and community rights.