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US Army Corps of Engineers

Little Rock District Website

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MKARNS Navigation Notices

Current navigation and sailing notices for the McClellan-Kerr Arkansas River Navigation System

18 Locks & Dams

10 Navigation Pools

445 Miles of Waterway

Mariners: Check notices regularly for current channel conditions, restrictions, and safety information.

For the most up-to-date navigation information, visit the Notices To Navigation Interests (NTNI) website.

Navigation Notices

Archive: 2024

10 Jan 2024
MKARNS Nav Notice No. SWL 24-03 MPLD Nav Pass Open
Due to increased river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is lowered and the navigation pass is open. When the Montgomery Point Lock and Dam tailwater elevation drops below 115 ft., the navigation pass will be closed.
5 Jan 2024
MKARNS Nav Notice No. SWL 24-02 Lock 2 Closure
Lock No. 2 (NM 13.3) will be closed to traffic beginning at 7 a.m. on February 5, 2024, until 7 p.m. on February 9, 2024. This is to allow workers to upgrade the lock interlock system which is an integral safety function of the Lock.
5 Jan 2024
MKARNS Annual Navigation Notice No. 1-2024
As a result of partnering efforts with navigation stakeholders, the attached consolidated Notice to Navigation Interests has been prepared for the McClellan-Kerr Arkansas River Navigation System (MKARNS). The intent is to provide consistency by reviewing and informing current district regulations with a joint notice that will be updated annually. The notice is applicable to the Little Rock (SWL) and Tulsa (SWT) Districts.