Columbus, IN. Online Offers. Columbus ( /kÉlÊmbÉs/) is a city in and the county seat of Bartholomew County, Indiana, United States. The population was 44,061 at the 2010 census, and the current mayor is Fred Armstrong.
In 1951, the U.S. Army Corps of Engineers began construction of the New Orleans Mississippi River Floodwall under the Dumaine Street Wharf. Between 1973 and 1992, 15 major sections were built at a cost of $30 million.
The flooding that killed 1,836 people in New Orleans and caused billions of dollars in property damage might have been prevented if the Corps had retained an external review board to double-check its designs of the new flood walls, built in the 1990s and early 2000s, says Rogers.