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Numbers: Dams, from Hoover to Three Gorges to the crumbling ones

Posted by: Aqua Blog Maven on February 9, 2009 at 6:06 am

From Discover Magazine:

845,000 Number of dams in the world. The United States has 80,000, with a total storage capacity of 48 trillion cubic feet of water. Hoover Dam, straddling the Nevada-Arizona border at Lake Mead, is the country’s largest, storing 1.2 billion cubic feet.

49 Number of dam failures in the United States between 2000 and 2007. Overtopping due to poor design accounts for 34 percent of all failures. Some 85 percent of all large dams will have passed their projected life spans by 2020. The Association of State Dam Safety Officials estimates that it would cost $10.1 billion to repair the dams most in need of rehabilitation.

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February 9, 2009 · Filed Under Infrastructure

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