[McGruff]

I thought N.O. was the only place with levees. I thought the rest of the country built dams.

[IamConservative]

I thought N.O. was the only place with levees. I thought the rest of the country built dams.

I know first hand many of the rivers in south and central Indiana have man made levees on both side that run for miles. I spent many an hour in my youth mowing then in the summer. Generally speaking, they work very well. Under extreme flooding, they will hold back water until they breach and then you get enormous flash floods. The breaches normally are "blow outs" cause by the hydraulic pressures of the flood water. Varmints holes can sometimes play a role as well. It is not unheard of for people to blow them with dynamite downstream in a desperate bid to save their own crops or homes.

[Just another Joe]

I thought N.O. was the only place with levees. I thought the rest of the country built dams.

Nope, lots of levees along the Missouri and Mississippi rivers.

Dams hold water back forming a lake, levees attempt to hold water within the course of a river.