Other than the outer fortifications that have been made, the 3 flood gates on the canals through the city from Pontchartrain are the most impressive. That back flow of water from the lake back to the Mississippi River is what caused the breaches in the 17th street canal in 2005. I walked it all in September/October of 2005.
I know. Banter.
I went back after Isaac in 2012. The flood wall was crazy impressive.
now back to storm mode…