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  • MKARNS Nav Notice No. SWL 24-33 Lock 5 DS Appr - Sailing Instructions

    Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should favor the long wall in the downstream approach to Colonel Charles D. Maynard Lock (No. 5) NM 86.3.
  • USACE lifts small craft advisory for Arkansas River

    The U.S. Army Corps of Engineers is lifting the small craft advisory for the Arkansas River. Small craft advisories are issued when flows reach 70,000 cubic feet per second. While flows have receded, USACE officials urge boaters to always exercise caution when on the river.
  • NAVIGATION NOTICE Number SWL 24-31 McClellan-Kerr Arkansas River Navigation System

    TOW HAULAGE RETURN TO SERVICE MURRAY LOCK AND DAM (No. 7) NM 125.4 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM
  • NAVIGATION NOTICE Number SWL 24-30 McClellan-Kerr Arkansas River Navigation System

    TOW HAULAGE OUT OF SERVICE COLONEL CHARLES D. MAYNARD LOCK (No. 5) NM 86.3 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM
  • MKARNS Nav Notice No. SWL 24-28 Lock 13 Intermittent Delays

    Mariners should expect to experience intermittent delays at James W. Trimble Lock (No. 13) NM 292.8 on March 19, 2024, between the hours of 7:00 a.m. and 5:00 p.m. The intermittent delays are required to facilitate maintenance on the hydraulic system.
  • MKARNS Nav Notice No. SWL 24-27 Lock 10 Reopened

    The electrical issue at Dardanelle Lock (No. 10) NM 205.5 was repaired and the Lock is currently open to traffic.
  • MKARNS Nav Notice No. SWL 24-26 Lock 10 Unscheduled Closure

    Dardanelle Lock (No. 10) NM 205.5 is currently closed to traffic due to an electrical issue. Crews are currently enroute to troubleshoot and repair the issue. A subsequent navigation notice will be distributed when the Lock is back in service.
  • MKARNS Nav Notice No. SWL 24-25 Solar Eclipse Advisory NM 100 to NM 300

    Mariners are advised to exercise caution on Monday April 8, 2024 when transiting the area between NM 100 and NM 300 on the McClellan-Kerr Arkansas River Navigation System. It is anticipated there will be a higher volume than normal of recreational vessels in the area, many of which may be operated by individuals unfamiliar with the navigation system. Some pleasure craft may unknowingly be moored in the navigation channel to observe the eclipse. Mariners are further advised to expect higher than normal recreational traffic in the days leading up to this event.
  • 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.