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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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⚠ 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

  • MKARNS Nav Notice No. SWL 24-23 Lock 8 Closure

    Toad Suck Lock (No. 8) NM 155.9 will be closed to traffic beginning at 7:00 a.m. until 5:00 p.m. on March 13, 2024, to allow surveyors to measure the miter gates. The closure is weather dependent and will be canceled and rescheduled should rainfall occur.

  • MKARNS Nav Notice No. SWL 24-20 Lock 7 Intermittent Delays

    Mariners should expect to experience intermittent delays at Murray Lock (No. 7) NM 125.4 beginning March 18 through March 21, 2024, between the hours of 7:00 a.m. and 5:30 p.m. daily. The intermittent delays are required to facilitate an underwater dive inspection of the Lock chamber.

  • MKARNS Nav Notice No. SWL 24-18 Lock 8 DS Appr - Sailing Instructions

    SAILING INSTRUCTION NM 155.4 to NM 155.6 AND DOWNSTREAM APPROACH TOAD SUCK LOCK AND DAM (No. 8) NM 155.9 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM

  • MKARNS Nav Notice No. SWL 24-19 Lock 9 DS Appr - Sailing Instructions

    February 23, 2024 In Reply Refer to: CESWL-OP P. O. Box 867 Little Rock, AR 72203-0867 PH. 501-324-5096 SAILING INSTRUCTION ARTHUR V. ORMOND (No. 9) NM 176.9 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM

  • MKARNS Nav Notice No. SWL 24-17 WREC Differentials

    This is to advise mariners transiting the White River Entrance Channel (WREC) of increased head differentials between Norrell Lock and Dam and Montgomery Point Lock and Dam.

  • MKARNS Nav Notice No. SWL 24-16 Lock 2 Opened

    Crews have completed the upgrades to the lock interlock system at Lock No. 2 (NM 13.3), as communicated in Navigation Notice No. SWL 24-02, and the lock is now open to traffic.

  • MKARNS Nav Notice No. SWL 24-15 Lock 13 Intermittent Delays

    Mariners should expect to experience intermittent delays at James W. Trimble Lock (No. 13) NM 292.8 on February 9, 2024, between the hours of 7:00 a.m. and 11:00 a.m. The intermittent delays are required to facilitate replacement of hydraulic piping.

  • MKARNS Nav Notice No. SWL 24-14 Lock 3 Tow Haulage Scheduled Outage

    The tow haulage equipment at Joe Hardin Lock (No. 3) NM 50.2 is scheduled to be out of service for maintenance work from 7 a.m. to 7 p.m. on Tuesday, February 6, 2024. During this time double cut tows will have to be locked the conventional way (without the use of tow haulage). Although not anticipated, a follow up notice will be distributed if issues arise causing a delay in the return of the tow haulage equipment.

  • MKARNS Nav Notice No. SWL 24-13 Lock 6 Intermittent Delays Update

    The dive inspection, as noted in Nav Notice 24-04, at David D. Terry Lock (No. 6) NM 108.1 that was previously scheduled February 5 through February 8, 2024, between the hours of 7:00 a.m. and 5:30 p.m. has been canceled due to high water. No intermittent delays are expected during this time.

  • MKARNS Nav Notice No. SWL 24-12 Lock 7 Tow Haulage Out of Service

    The tow haulage equipment at Murray Lock (No. 7) NM 125.4 is currently out of service due to electrical issues. Double cut tows will have to be locked the conventional way (without the use of tow haulage). A follow up notice will be distributed when the tow haulage equipment is back in service.

Navigation Notices Archive