FILE - This Aug. 30, 2012 file photo shows the pumping station at the 17th Street Canal, built after Hurricane Katrina breached the canal and flooded New Orleans, with the intact canal

 

              FILE - This Aug. 30, 2012 file photo shows the pumping station at the 17th Street Canal, built after Hurricane Katrina breached the canal and flooded New Orleans, with the intact canal
FILE - This Aug. 30, 2012 file photo shows the pumping station at the 17th Street Canal, built after Hurricane Katrina breached the canal and flooded New Orleans, with the intact canal wall after Hurricane Isaac came through the region. By the time the next hurricane season starts in June 2013, New Orleans will take control of much of a revamped protection system of gates, walls and armored levees the Army Corps of Engineers has spent about $12 billion building. The corps has about $1 billion worth of work left. Engineers consider it a Rolls Royce of flood protection, comparable to systems in seaside European cities such as Venice and Rotterdam. (AP Photo/Gerald Herbert, file)