Lock Closure: Lock and Dam 4, RM 752.8

Notice Number: 202516-1/UMR 23-01
Date: 04/17/2023 14:00 thru 05/01/2023 14:00

Lock and Dam 4 has closed to navigation as of 1400 hrs on April 17 due to debris conditions and forecasted high water flows in the Mississippi River. It will remain closed until the pool elevation drops below 671.5.


Kristin M. Moe
Chief, Mississippi River Project