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Navigation Notices

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

    The intermittent delay period at James W. Trimble Lock (No. 13) NM 292.8 on March 9, 2024, between the hours of 7:00 a.m. and 5:00 p.m., noted in Nav Notice SWL 24-22, has changed. The new intermittent delay is on March 10, 2024, between the hours of 7:00 a.m. and 5:00 p.m. The intermittent delays are required to facilitate replacement of hydraulic piping.

  • 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.