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Ranganadi Dam

Overview of the Dam

  • Ranganadi Dam is the first mega dam of Arunachal Pradesh which isRanganadi Dam constructed on the Ranganadi River, a tributary of Brahmaputra River.
  • The dam is approximately 345 metres long and 68 metres high with 5 spillway radial gates to absord design flood of 13,241 cumec.
  • The Ranganadi Dam is a gravity dam which is intended for hydroelectric purposes and is a part of stage I of the Ranganadi Hydro-Electric Project, supporting 405 Megawatt of The Dikrong power House which has 3 units of 135 MW each.
  • The dam's reservior has a live storage capacity of 21.28 MCM (Million Cubic Meters) at FRL (Full Reservior Level).
  • The MDDL (Minimum Drawdown Level) of the dam is at 560m. The minimum drawdown level has been kept at an appropriate height to sustain fresh water supply for the local communities.

Ranganadi river

The Ranganadi River (known as the Panyor River in its upstream reaches is one of major tributaries of the Bhramaputra River with highly dependable flows. It originates from the Nilam, Marta and Tapo mountain ranges in Arunachal Pradesh.

The Ranganadi sub-basin spreads for about 2384.65sq.km across the Lower Subansiri and Papum-Pare districts in ArunachalPradesh, and Lakhimpur district of Assam where it joins the Subansiri-Bhramaputra river system at Khichikagaon.

Ranganadi Hydro-Electricity Project

This Project is located in the Lower Subansiri District of the State of Arunachal Pradesh in the Ranganadi basin and the adjoining Dikrong basin. It has a capacity of 405 MW. It's commercial operation started in 2001-02. The beneficiary states include Assam, Arunachal Pradesh, Manipur, Meghalaya , Mizoram, Nagaland and Tripura.

It is being managed by the North Eastern Electric Power Corporation Ltd.

To know more details, click here.

Sources:

  1. North Eastern Electric Power Corporation Ltd


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