Sunday, November 18, 2007

Oops! The Corps of Engineers does it again.

Talking Points Memo | Mistakes made in New Orleans flood maps
The Army Corps of Engineers released flood risk maps on a block-by-block basis on June 20, but didn't include some technical data, preventing independent assessments of the accuracy of the maps.

The maps showed that the improvements made to the city canals' drainage systems would reduce flooding during a major storm by about 5.5 feet in Lakeview and nearby neighborhoods. The maps were based on a storm that has the likelihood of occurring at least once in 100 years.

But in a report released Nov. 7, Corps scientists estimated that the actual benefit the system would provide would be just 6 inches.

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