The Army Corps of Engineers has completed its plan for a levee system designed to protect New Orleans from the kind of catastrophic storm surge that might occur once in 100 years. Environmental approvals for the system of levees and storm walls should be in place by early 2009, with construction completed by 2011. The design required "a great deal of rigor, including the modeling of 152 storm events and 64,000 hydrographs," according to Mike Park, program manager for the Greater New Orleans Hurricane and Storm Damage Risk and Reduction System.

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