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LATEST NEWS UPDATES | Dams may dry up Ganga, warns ministerial group -Nitin Sethi

Dams may dry up Ganga, warns ministerial group -Nitin Sethi

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published Published on Apr 11, 2013   modified Modified on Apr 11, 2013
-The Times of India


Recognizing that the plethora of dams built and planned in the Ganga basin could almost empty the river of its waters in the winter season, an inter-ministerial group has recommended that the projects be re-engineered to maintain 30-50% of water flow in the lean period of December-March.

The group headed by Planning Commission member B K Chaturvedi also recommended that electricity production in the existing and upcoming dams on the river's tributaries in Uttarakhand be moderated marginally to ensure that water flow is maintained at 25% between April to October -- the period when the river has average or high water levels.

While keeping the ecological flow in the river at these levels, the government could permit the dams already working or in the pipeline to continue after re-designing to ensure the recommended flow of water in the river. The move would require adjusting the tariff and power production levels marginally. The committee has also recommended that 17 proposed projects adding up to 2,633 mw capacity be reviewed after the Ganga basin study by the IIT consortium.

Sixty-nine projects are proposed or running on Bhagirathi and Alaknanda -- the two main tributaries of the Ganga river basin. These add up to a capacity of 9,020.30 mw. Of these, 17 projects are operational at the moment and 26 are under construction.

If accepted by the government, the report could provide the UPA a route to blunt the BJP's shrill 'save the Ganga' campaign. At the moment, the standard prescription given to hydrolectric projects is to let through only 10% of the river water as ecological threat but environmentalists have warned that with the multiple dams proposed on the tributaries uphill, the river could go dry for large parts of the year.

Non-government members on board the inter-ministerial group, however, differed with the report. Sunita Narain, director general of Centre for Science and Environment, has asked for a minimum of 50% flow in all projects in the winter season between December-March. In an alternative view forming part of the report, she said the data used by the committee to limit winter flows to 30% in some projects was faulty and unverified. She contended that maintaining 50% flow in the river in winter would not lead to greater tariff for the projects or lower their power production abilities significantly.

Rajendra Singh, head of Tarun Bharat Sangh, also on board the committee, disagreed with the report demanding 75% flow in the river in winter and 50% in the summer season.

One of the key demands of protestors was met with the committee recommending that the flow of the river must not be intermittent but continuous.

While noting that the existing 21 hydroelectric projects would face an increase of tariff from 10-20% on Alaknanda and Bhagirathi basins, the committee noted that the dams could be optimized to produce more electricity in the high-flow seasons which they are not doing at the moment.

The group proposed that six tributaries -- Nayar, Bal Ganga, Rishi Ganga, Assi Ganga, upper reaches of Dhauli Ganga, Birahi Ganga and Bhyunder Ganga -- should be kept pristine in character. The Nayar river and the Ganga river stretches between Devprayag and Rishikesh as well as that between Balganga and Tehri reservoir be declared as fish conservation reserves.

For the controversial 330 mw Srinagar project, the committee left it to the environment ministry to decide.


The Times of India, 11 April, 2013, http://timesofindia.indiatimes.com/home/environment/developmental-issues/Dams-may-dry-up-Ganga-warns-ministerial-group/articleshow/19485134.cms


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