NEW ORLEANS - Despite more than $22 million in repairs, a levee that broke with catastrophic effect during Hurricane Katrina is leaking again because of the mushy ground on which New Orleans was built, raising serious questions about the reliability of the city's flood defenses.

Outside engineering experts who have studied the project said the type of seepage spotted at the 17th Street Canal in the Lakeview neighborhood afflicts other New Orleans levees as well and could cause some of them to collapse during a storm.
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