$416M dam replacement project starts in California

09/19/2011 | San Francisco Chronicle

Crews have started work on a $416 million project to replace Calaveras Dam, a 210-foot-high structure in the Alameda Creek watershed in California. The 86-year-old dam, touted once as the world's largest earth-and-rock structure, was declared seismically unsafe 10 years ago. The 220-foot-high replacement will be "a zoned earth-and-rock-fill dam, which is not brittle like concrete and will move and adjust with the earth's movements," says Daniel Wade, a regional project manager.

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