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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
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David D. Terry L&D MRER

⚠ Important Navigation Information

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

Results:
Archive: August, 2026
Clear

  • MKARNS Nav Notice SWL 26-31 Channel Obstruction Cleared NM 119

    The river obstruction at NM 119 (between Broadway and Main Street Bridges) has been removed. The area is clear for all transit. Ref: Navigation Notice SWL 26-30.

  • MKARNS Nav Notice SWL 26-30 Caution Advisory NM 119

    Mariners are advised that there is an obstruction in the river near the left descending side of the navigation channel at NM 119, between the Broadway and Main Street Bridges. The obstruction appears to be a derelict wooden pile protruding just above the waterline. Crews are mobilizing to investigate the obstruction and will attempt to remove it tomorrow, August 20, 2026.

  • MKARNS Nav Notice SWL 26-29 Lock 10 Early Closure

    Mariners are advised that due to a critical construction activity related to the 110 ft. stoplog conversions, the daytime closure at Dardanelle Lock (No. 10) NM 205.5 will begin at 3:00 a.m. on Thursday August 20th, 2026, and end at 3:00 p.m. on Thursday August 20th, 2026. To offset the early closure start, the lock will open early to traffic at 4:00 p.m. on Wednesday August 19th, 2026.

Navigation Notices Archive