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Navigation Notices

  • MKARNS Nav Notice No. SWL 25-17 Lock 2 Tow Haulage Return to Service

    The tow haulage equipment at Lock No. 2 (NM 13.3) has been repaired and returned to service.

  • MKARNS Nav Notice No. SWL 25-16 Lock 2 Tow Haulage Out of Service

    The tow haulage equipment at Lock No. 2 (NM 13.3) is currently out of service. 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.

  • MKARNS Annual Navigation Notice No. 1-2025

    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.

  • MKARNS Nav Notice No. SWL 25-14 Lock 3 Unscheduled Closure

    Due to issues with the Tainter valve equipment, Joe Hardin Lock (No. 3) NM 50.2 is currently closed to traffic. Crews are onsite and will have the Lock reopened as soon as the repairs are completed. A subsequent Navigation Notice will be issued once the Lock has been opened to traffic.

  • MKARNS Nav Notice No. SWL 25-13 Lock 3 Intermittent Delays 

    Mariners should expect to experience intermittent delays at Joe Hardin Lock (No. 3) NM 50.2 on February 27, 2025, between the hours of 6:00 a.m. and 6:00 p.m. The intermittent delays are required to facilitate work on the hydraulic system.

  • MKARNS Nav Notice No. SWL 25-12 Lock 4 Closure

    Mariners are advised that Emmett Sanders (No. 4) NM 66.0 will be closed to traffic beginning at 8:00 a.m. until 4:00 p.m. on February 26, 2025. The lock closure is required to facilitate ongoing work on the hydraulic system.

  • MKARNS Nav Notice No. SWL 25-11 Lock 9 Tow Haulage Planned Outage

    The tow haulage equipment at Ormond Lock (No. 9) NM 176.9 will be taken out of service beginning February 15, 2025, to facilitate required work on the lock shelters. 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.

  • MKARNS Nav Notice No. SWL 25-10 Lock 10 Intermittent Delays

    Mariners should expect to experience intermittent delays at Dardanelle Lock (No. 10) NM 205.5 on February 6, 2025 between the hours of 7:00 a.m. and 5:30 p.m. daily. The intermittent delays are required to facilitate an underwater ROV inspection of the upstream river wall.

  • MKARNS Nav Notice No. SWL 25-09 Lock 3 Closure

    Mariners are advised that Joe Hardin Lock (No. 3) NM 50.2 will be closed to traffic beginning at 7:00 a.m. until 4:00 p.m. on February 12, 2025. The lock closure is required to facilitate ongoing work on the hydraulic system.

  • MKARNS Nav Notice No. SWL 25-08 Lock 4 Tow Haulage Return to Service

    The tow haulage equipment at Emmett Sanders (No. 4) NM 66.0 has been repaired and returned to service.