(The MR-GO is a man-made waterway built to offer oceangoing ships a direct route between New Orleans and the Gulf of Mexico.) The MR-GO's levees, which make up the easternmost length of the ring ...

Louisiana has long relied on a vast levee system to rein in the Mississippi River and protect surrounding communities from flooding. But cutting off the natural flow of the river with man made ...

A seawall in Galveston buffers storm surge from the Gulf. Bayous and man-made channels drain water from the region. Levees protect suburban neighborhoods, and lakes meant to be sources for ...