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Roller-Compacted Concrete Delivers Rapid, Efficient Dam Rebuild

Publication Date: 1/27/2010
Author: Thomas F. Armistead at the Taum Sauk Upper Reservoir
Format: HTML

Description:
The rebuilding of Taum Sauk Upper Reservoir is a project of many superlatives. The upper bowl of the 440-MW pumped-storage system sits on top of Missouri’s highest peak, 1,590-ft Proffit Mountain. It is believed to be North America’s largest roller-compacted concrete dam. When the original earth-and-rockfill dike was over- topped and failed in December 2005, Missouri Gov. Matt Blunt (R) called the damage done by the 4,365 acre-ft of water it released “the worst man-made disaster in the history of Missouri.” And the $10-million civil penalty imposed on St. Louis-based utility AmerenUE by the Federal Energy Regulatory Commission for the failure was the largest FERC penalty ever in a hydroelectric case.

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