Corn Island is a now-vanished 7 acres (28,328 m²) island in the Ohio River

Ohio River

The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream...

, at head of the Falls of the Ohio, just north of Louisville, Kentucky

Louisville, Kentucky

Louisville is the largest city in the U.S. state of Kentucky, and the county seat of Jefferson County. Since 2003, the city's borders have been coterminous with those of the county because of a city-county merger. The city's population at the 2010 census was 741,096...

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Estimates of the size of Corn Island vary with time as it gradually was eroded and became submerged. A 1780 survey listed its size at 43 acres (174,015 m²). At that point it extended from what is now Louisville's Fourth Street to Fourteenth.

The Louisville Cement Company extracted rock for cement in the 19th century, and the removal of trees from the island contributed to erosion, which combined to sink much of the island by 1895.