Archeological evidence shows that
Native Americans first inhabited the Ocmulgee basin about 10,000 to 15,000 years ago (see
settlement of the Americas).
Eli Whitney's invention of the
cotton gin stimulated development of short-staple cotton plantations in the uplands, where it grew well. The gin mechanized processing of the cotton and made it profitable. Demand for land in the Southeast increased, as well as demand for slave labor in the Deep South. In 1806, the U.S. acquired the area between the Oconee and Ocmulgee rivers from the Creek Indians by the
First Treaty of Washington. That same year
United States Army established
Fort Benjamin Hawkins overlooking the Ocmulgee Fields. In 1819 the Creek held their last meeting at Ocmulgee Fields. they ceded this territory in 1821. In the same year, the McCall brother established a barge-building operation at Macon. The first
steamboat arrived on the river in 1829. During the 19th century, the river provided the principal water navigation route for Macon, allowing the development of the
cotton industry in the surrounding region. In 1842 the river was connected by
railroad to
Savannah. The river froze from bank to bank in 1886. In 1994 devastating floods on the river after heavy rains caused widespread damage around Macon. ==Ocmulgee creeks==