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Improvements at Howard Hanson evident during recent rainfall

SEATTLE, Wash. 2/29/12 (PennWell) -- The U.S. Army Corps of Engineers reports that recent work at the Howard Hanson Dam protected nearly 1 million people and US$2 billion in resources in the Green River Valley.

The region's recent rainfall and flow rates count amongst the heaviest in Howard Hanson Dam's existence, according to the Corps, but recent repairs and improvements minimized the rainfall's effects.

Even after Howard Hanson Dam was constructed in 1962, flooding of the Green River has caused heavy damage to land and buildings in the Green River Valley more than 30 times, the Corps says.

One such flood in 2009 prompted the dam's recent $40 million makeover that included a new seepage barrier and improved drainage tunnel function.


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