Contractors are scheduled to perform maintenance work on the rock structure located in the downstream approach to Joe Hardin Lock (No. 3) at Altheimer on Monday, May 18.

Rainfall and a subsequent rise in water levels may delay the start of work. Mariners are advised to contact the lock prior to arrival, according to a news release from the U.S. Army Corps of Engineers.

Details: Little Rock District Office, or 501-324-5739.