My parents recently sent me an issue of National Geographic with a really good New Orleans story in it, dealing with the various problems in the efforts to shore up the levee/floodwall system. It hadn’t occurred to me that this would be online, but our friend GK passes along this link to an online piece that summarizes some of the article’s most alarming points. For instance:
Bea found several areas where rainstorms have already eroded the newly rebuilt levees, particularly where they consist of a core of sandy and muddy soils topped with a cap of Mississippi clay.
“It’s like icing on the top of angel food cake,” Bea said. “These levees will not be here if you put a Katrina surge against them.”
There’s also an interactive map. Worth a look.