Corps: Isaac's path, slow speed caused flooding
NEW ORLEANS - A post-Hurricane Isaac study by the Army Corps of Engineers says Isaac's storm surge flooding of areas that were not inundated during Hurricanes Katrina and Gustav was not caused by post-Katrina improvements to New Orleans area levee system.
Instead, the study says, surge flooding during Isaac was the result of the storm's landfall just west of the Mississippi River, rainfall amounts of 8 to 20 inches, a forward speed 3 to 4 times slower than Katrina and a resulting lengthy period of easterly winds that pushed surge heights to record levels.
The Times-Picayune reports residents and elected leaders in several area parishes, including St. John the Baptist, St. Tammany, Plaquemines and Tangipahoa, pushed for the study after record flooding in some areas.
The study results were released Friday.