Subansiri River

UPSC Reference Category: GS Paper I – Geography | Rivers | Northeast India | Hydropower

Key Facts

  • Major tributary of the Brahmaputra.
  • Originates in Tibet.
  • Enters India through Arunachal Pradesh.
  • Flows through:
    • Arunachal Pradesh
    • Assam.
  • Joins the Brahmaputra in Assam.

Lower Subansiri Hydroelectric Project

  • Major hydropower project on the Subansiri.
  • Located at the Arunachal Pradesh–Assam border region.
  • Important in India's hydropower development.
  • Has historically faced environmental and local-community concerns.

UPSC Importance

Questions can link Subansiri with:

  • Brahmaputra river system
  • Transboundary rivers
  • Himalayan hydropower
  • Seismicity
  • Landslides
  • Flood management

Key Pointer

Subansiri → Tibet → Arunachal Pradesh → Assam → Brahmaputra