From today, third article down, 17th paragraph.
The water rushing through the damaged levee was not the only concern.
Hurricane Katrina damaged the locks dividing different water levels
between Lake Pontchartrain and the Mississippi River. "They are not
functional," Rodriguez said of the locks. "You can't open or close them,
and right now they're open."
http://www.nola.com/newslogs/tporleans/index.ssf?/mtlogs/nola_tporleans/archives/2005_09_24.html#082372
I have heard that, but i haven't heard it confirmed. If they were really fully open, NO would be so flooded. So it's not exactly what he's implying.