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.
This stage occurred in December 1987, the highest stage since completion of the flood control reservoirs. Major flooding begins at this level. Widespread residential flooding is possible in the Camden vicinity and downstream. Much of the low lying areas along the river in Ouachita and Calhoun counties will be flooded.