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Intensive Mains Program for IAS 2026
29th July 2025 (10 Topics)

India-China Brahmaputra Water Dispute

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Context

China has commenced construction of a major hydropower dam on the Yarlung Tsangpo (Brahmaputra) at Medog, raising geopolitical, environmental, and strategic concerns for India.

Strategic Implications of the Medog Dam

  • China’s Tactical Hydropower Expansion: The 60 GW dam project at Medog, the world’s largest hydroelectric project, symbolizes Beijing’s ambition to harness upstream riparian power without regional consultations.
  • Risks to Downstream India: The dam could significantly alter the river's flow into Arunachal Pradesh and Assam, affecting flood cycles, water availability, and long-term ecological stability.
  • Opaque Transboundary Conduct: China’s refusal to share detailed hydrological data or engage in treaty-based riparian cooperation undermines trust and heightens regional security risks.

Diplomatic and Regional Asymmetries

  • Absence of Formal Water-sharing Treaty: Unlike the Indus Waters Treaty with Pakistan, India and China lack any binding agreement governing the Brahmaputra, leaving India vulnerable to upstream decisions.
  • Quiet Diplomacy’s Limitations: India’s current strategy of restrained diplomatic communication with China has failed to deter Beijing’s unilateral moves on transboundary river systems.
  • Geostrategic Comparison with Pakistan: The article contrasts how India generously engages with Pakistan over water-sharing while failing to demand reciprocity or transparency from China.

Environmental Fragility and Future Engagement

  • Tectonic Volatility of Eastern Himalayas: The Brahmaputra basin, influenced by the Himalayan Frontal Thrust and the Medog Fault, is highly seismic; large dams pose serious earthquake and landslide risks.
  • Downstream Disaster Vulnerability: Unilateral projects could exacerbate flash floods, glacial lake outburst floods (GLOFs), and sedimentation, particularly in Assam and Bangladesh.
  • Need for Multilateral Norm-building: India must assert its riparian rights through formal diplomatic channels, build international pressure, and push for basin-level multilateral hydrodiplomacy mechanisms.

Practice Question:

“The construction of hydropower dams by China on the Brahmaputra river presents a serious strategic and environmental challenge for India. Critically evaluate India’s current diplomatic posture and suggest a comprehensive framework to protect its riparian interests.”

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