[Updated 5:44 a.m. ET]  There have been reports of 10 to 12 feet of water in homes in Plaquemines Parish, parish President Billy Nungesser told CNN.

Nungesser said Isaac has pushed more water into some areas than Katrina did seven years ago. He said the Woodlawn area had no water in it from Katrina and has five feet of water in it now.



[Updated 5:26 a.m. ET]  Billy Nungesser, Plaquemines Parish president, told CNN what happens when a levee is overtopped:

"As that water flows over the top, it eventually will eat out portions of that levee, which then it washes away.

"Either that or the inside of the levee will fill up.

"One or the other will happen. Either way that area's going to be totally inundated with water."



[Updated 5:19 a.m. ET] Billy Nungesser, Plaquemines Parish president, spoke to CNN about the overtopping of a levee in the parish:

"We knew we were going to have trouble with the projected storm surge, but we were hoping this storm wasn't going to sit out there as long as it has done, backtracked, and keep pumping this water up against the levees. And there's only just so much that it can take."



[Updated 5:12 a.m. ET] Officials are reporting "overtopping of a levee on the east bank" from Braithwaite to White Ditch in Louisiana's Plaquemines Parish, which will "result in significant deep flooding in the area," the National Weather Service said.