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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: 2026

7 Jan 2026
MKARNS Nav Notice SWL 26-02 Lock Closure Forecast - 2026
The purpose of this Navigation Notice is to provide forecasted lock closures for the 110-ft Stoplog Conversion projects in 2026. The information below is considered tentative and the closure details could change depending on site conditions, construction means and methods and other variables.