When completed in 2009, the Three Gorges Dam in China will be the world's largest made of 989 million cubic feet of concrete. Spanning 1.4 miles across the Chang (Yangtze) River, the dam will create a reservoir over 350 miles long, holding 1.39 trillion cubic feet of water, so much that it will take six years to fill.
Three Gorges Dam Turbin
Its 18,200-megawatt hydroelectric plant will also be the world's largest, generating as much energy as 15 nuclear power plants. To make room for the reservoir, over 1.2 million poeple are being relocated, and countless villages, burial grounds, and archaeological sites will be flooded.
