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,
Morganza to the Gulf to 4 in favor of the Water Resources Development Act, an enormous water projects bill containing the levee system. Congress has not passed a WRDA bill since 2000, and authorization for the Morganza project has stalled annually with it. Next WRDA will head to conference committee, where the House and the Senate will iron out any differences between their versions of the bill. Last year, WRDA died in the waning hours of the Senate stuck in conference committee. But Jerome Zeringue, executive director of the Terrebonne Levee and Conservation Board, said that the May passage of WRDA and a lack