Key Facts about Dibang River

About Dibang River:

• It is an important tributary of the Brahmaputra.
• It flows through the states of Arunachal Pradesh and Assam.
• The Dibang Valley, a district of Arunachal Pradesh, is named after this river.
• Course:
  • It originates near Keya Pass on the Indo-Chinese border in the Upper Dibang Valley district of Arunachal Pradesh.
  • The region all along the upper course of the river is located in the Great Himalayan Mountain Range, with its northern and eastern reaches bordering Tibet.
  • Cutting deep gorges through the Mishmi Hills, it enters the plains at Nizamghat (Bomjir) and meets the Lohit and then the Dihang (Siang) River near Sadiya in Assam, below which the combined stream is known as the Brahmaputra.
  • It stretches from its origin in the Mishmi Hills to its confluence with the Brahmaputra River in Assam.
• Major Tributaries: Dri, Mathun, Talon, Eme, Ahi, Emra, and Awa.
• It is an important lifeline for the Idu Mishmi tribal community, supporting their traditional lifestyle, agriculture, and fishing practices.

Dibang Multipurpose Project:

• It is a flood control cum hydroelectric power project planned to be developed on the Dibang River in Arunachal Pradesh.
• At 2,880 MW installed capacity, it will be the country’s biggest hydropower facility.
• It is being developed by India’s state-run National Hydroelectric Power Corporation (NHPC).
• The Project is designed as an energy storage project, with flood moderation as one of the key objectives, besides power generation.
• It involves the construction of a 278-metre-high concrete gravity dam, which is planned to be India's highest concrete gravity dam.
• The dam is planned to be constructed with the Roller Compacted Concrete (RCC) technique, and it will be the highest RCC dam in the world.