Transcript for Hurricane Isaac: 2 Feet of Rain in Louisiana
And of course, it's been a rough 36 hours for everyone with a drenching downpour, pretty constant. But what may have been the worst damagemaker was the storm surge, that wall, that 10-foot to 12-foot wall of water that blew by here. These rocks were clear before the storm. Now, look at the debris line. This tree is about three feet in diameter and eight feet off the top. That storm surge blew 150 miles up the mississippi river. Far enough and powerful enough to change the direction the mississippi river was flowing for 24 hours. Add to that, the heavy rain. And that's unbelievable flooding. Massive in size. More than 500 miles wide. Isaac has dumped almost two feet of rain on parts of louisiana and mississippi. Combining with a 10-foot to 12-foot storm surge, causing expensive flooding. New orleans $14 billion federal levee system so far has withstood the test. But rural areas outside were swamped. Have you ever seen the water up to this level in this area? It wasn't this bad for katrina. Not here. It's got bad. But not this high. Reporter: In the past 24 hours, the national guard has rescued hundreds and brought aid to thousands needing to be evacuated. We had to break through the ceiling and come through the attic. And they took us out of the attic into the boat. Reporter: On the other side of the flood wall is plaquemines parish. It's horrible. Everybody's house is gone. Nobody got a house. Braithwaite. Nobody. Reporter: This is the levee where it went over top. That piece of machinery is on top of what would be the levee that runs all the way down the line. To give you an idea of how much water is there, take a look at the stop sign. You can just see it peeking out of the top of the water. This father and son watched 12 feet of rising water swallow their home in a matter of minutes. They jumped into their fishing boat and spent hours rescuing their trapped neighbors. We rescued about ten individuals when I was there, including a baby. A 70-year-old man. We had to break through the attic ventilation system. We rescued a lot of people. Saw a lot of things I never thought I'd see. that the path of this storm will continue up the middle of the country. We think it will be, what's left of it, the center of it, in ohio by the time we get to monday.
This transcript has been automatically generated and may not be 100% accurate.