Old River Control Structures and Atchafalaya River

Notice Number: 23-81
Date: 07/05/2023 7:00am-5:00pm

On 5 July 2023, between the hours of 7:00 a.m. and 5:00 p.m., the U.S. Army Corps of Engineers will significantly increase the diversion of water through the Old River Control Structures.

This diversion will increase the stage and velocity on the Atchafalaya River in the vicinity of Simmesport, Louisiana (and to lesser amounts downstream and upstream). These effects will occur between 8:00 a.m. and 6:00 p.m. Also, the draw through the Old River Control Structures (mile 311-315 Above Head of Passes on the Mississippi River) will increase.

Mariners should exercise extreme caution when navigating through these areas during the above-mentioned time period.

The point of contact with the New Orleans District is Russell Beauvais at 225-492-2169 (Work) or 225-202-3851 (Cell).


Chief, Technical Support Branch
Operations Division