Old River Control Structure Old River Control Structure The Old River Control Structure is a floodgate system in a branch of the Mississippi River in central Louisiana. It regulates the flow of water leaving the Mississippi into the Atchafalaya River, thereby preventing the Mississippi river from changing course. Completed in 1963, the complex was built by the U.S. Army Corps of Engineers in a side channel of the Mississippi known as "Old River", between the Mississippi's current channel and the Atchafalaya Basin, a former channel of the Mississippi. The Old River Control Structure is actually a complex containing the original low-sill and overbank structures,
156th New York Volunteer Infantry to Baton Rouge, then to Donaldsonville, July 11-15, and duty there until August 15. At Baton Rouge until March 1864. Red River Campaign March 23-May 22. At Alexandria March 25-April 12. Cane River April 23-24. Construction of dam at Alexandria April 30-May 10. Actions at Alexandria May 2 and 9. Retreat to Morganza May 13-20. Mansura May 16. At Morganza until July. Expedition from Morganza to the Atchafalaya May 30-June 5. Atchafalaya River June 1. Moved to Fort Monroe, Va., then to Washington, D.C., July 5-29. Sheridan's Shenandoah Valley Campaign August 5-November 28. Third Battle of Winchester September 19. Fisher's