Siang River

Siang River : The Arunachal Pradesh government has intensified efforts to conduct a Pre-Feasibility Report (PFR) for the 12.5 GW Siang Upper Multipurpose Project (SUMP)—envisioned as India’s largest hydropower project.

• About the Siang River: The river originates in Tibet, where it is called Tsangpo or Yarlung Zangbo.

o Upon entering Arunachal Pradesh, it is known as the Siang or Dihang River.

o Flows eastward for over 1,000 km in Tibet before curving around the Namcha Barwa peak.

o Enters India through Arunachal Pradesh and flows south into Assam.

o In Assam, Siang is joined by the Lohit and Dibang rivers. After their confluence, it is called the Brahmaputra.

o The river flows through regions inhabited by indigenous communities like the Adis of Arunachal Pradesh, shaping their culture and livelihoods.