"Alternatives to dam removal may be both more economically painful than dam removal and less effective, " he said.
The report indicates that dam removal is often less costly than dam repair.
According to American Rivers, the National Marine Fisheries service continues to down play the importance of dam removal by underestimating dam-related salmon mortality.
The continued escalation of costs with time would make building of the dam a priority, if indeed this dam is proved to be viable.
The infamous snail-darter, a three-inch fish that held up for years the construction of a federal dam in Tennessee, has happily survived the dam's arrival.
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The dam has been hit by several injunctions from federal prosecutors in the state of Para, where the dam is being built on the Xingu River, an Amazon tributary.
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Vale is a partner in 11 hydroelectric power stations currently operating in Brazil, and working on one new dam, known as the Estreito dam in Tocantins state in the north.
One told me that being involved in Crossrail was like his own Hoover Dam (the huge US dam built during the Great Depression) in terms of scale and personal achievement.
At the height of the flood, engineers feared a bridge on the Pawtuxet was going to collapse, taking with it a nearby dam, which in turn could have taken out another dam.
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To be sure, the dam has helped Egyptian farmers irrigate year-round and has prevented periodic flooding, but it has also deprived the Nile delta of nutrient-rich silt, which instead just piles up behind the dam.
The loan will help Belo Monte dam concession owners, Norte Energia, the capital needed to make the required social and environmental investments in the area where the dam will affect local citizens most.
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Of course, no dam ever runs at full capacity and because of the rise and fall of Amazon rivers during the dry seasons, the Belo Monte dam is expected to average around 4, 500 megawatts, making it still one of the most powerful generators of electricity in the country, and very important for mining operations in Para state.
Or take the Aswan High Dam in Egypt, an unmitigated disaster, according to ecologists.
It has now put a break in the dam to control drainage around the site.
During the Great Depression, America built the Hoover Dam and the Golden Gate Bridge.
The valves from the dam system are being shut down from Friday until Monday.
My platoon would assault the main building and clear miles of tunnels underneath the dam.
But that is a third of the area that the original dam would have inundated.
India's dam will divert some of the river down a 22km (14-mile) mountain tunnel to turbines.
The last was a home run which broke the dam and led to the victory!
The company said 1, 400 properties will have to be expropriated to build the dam.
It said it would delay plans to expand its Olympic Dam mine in Australia.
As it now stands, it is unlikely this dam will be constructed on schedule.
Instead, he threw in his lot with the anti-dam lobby and was duly re-elected.
The central government of Vietnam plans to build a dam nearby to generate electricity.
Rotherham Borough Council says the risk that the Ulley dam could be breached has "significantly reduced".
Following several campaigns, some European financial backers have withdrawn their support for the dam.
And it is along these lines that the campaign to stop the Yusufeli dam continues.
One resident we interviewed said he had first heard talk of a dam forty years ago.
We built the transcontinental railroad, the Interstate Highway System, the Hoover Dam, Grand Central Station.
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