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The Sardar Sarovar is the centrepiece of India's ambitious Narmada Valley project that taps the Narmada river through a series of dams, reservoirs and canals.
Authorities say the dam will also provide drinking water to millions of people in Gujarat and the neighbouring states of Rajasthan, Madhya Pradesh and Maharashtra, besides helping in flood control.
Construction of the 1,250-metre-long (1,367 yards) and 122 metre-high (402 feet) dam began in 1987, but it soon became embroiled in an environmental campaign.
In July, India's Supreme Court, after hearing a petition from environmentalists, gave the go-ahead to the project following a plea from India's prime minister that the project was important for development.
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http://www.terradaily.com/2006/061231152459.yzvcgx82.html