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  • MKARNS NAVIGATION NOTICE - SWL 23-43

    Due to falling river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is in operation and the navigation pass is closed. All vessels are required to pass through the lock until further notice.

  • MKARNS NAVIGATION NOTICE - SWL 23-42

    The Joe Hardin Lock (No. 3) NM 50.2 closure detail that was previously noted in Nav Notice SWL 23-28 has been revised. The lock will now be closed to traffic beginning at 7 a.m. on September 11, 2023, until 7 p.m. on September 15, 2023. This is to allow workers to upgrade the lock interlock system which is an integral safety function of the Lock.

  • MKARNS NAVIGATION NOTICE - SWL 23-41

    James W. Trimble Lock (No. 13) NM 292.8 will be closed to traffic beginning at 6 a.m. on August 8, 2023, until 6 p.m. on August 9, 2023. This is to allow workers to make repairs to the downstream land wall tainter valve piping.

  • MKARNS Navigation Notice - SWL-23-39

    SPECIAL LOCKING INSTRUCTIONS COLONEL CHARLES D. MAYNARD LOCK (No. 5) NM 86.3 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM

  • MKARNS NAVIGATION NOTICE  -  SWL 23-37

    Due to falling river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is in operation and the navigation pass is closed. All vessels are required to pass through the lock until further notice. Vessels may contact Montgomery Point Lock and Dam on Channel 16 for further information.

  • MKARNS Navigation Notice - SWL 23-36

    SAILING INSTRUCTIONS NM 256.1 to NM 256.4 AND DOWNSTREAM APPROACH AT OZARK LOCK (No. 12) NM 256.8 MCCLELLAN-KERR ARKANSAS RIVER NAVIGATION SYSTEM Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should run the green line from NM 256.1 to NM 256.4 and favor the long wall in the downstream approach at Ozark Lock (No. 12) NM 256.8.

  • NAVIGATION NOTICE - SWL 23-35

    Due to increased river elevations, the crest gate dam at Montgomery Point Lock and Dam (NM 0.5) is lowered and the navigation pass is open. When the Montgomery Point Lock and Dam tailwater elevation drops below 115 ft., the navigation pass will be closed.

  • NAVIGATION NOTICE Number SWL 23-26 McClellan-Kerr Arkansas River Navigation System

    The Baring Cross Railroad Bridge will be closed to navigation from 8 a.m. to 4 p.m. on June 11 and June 13. The closure is to facilitate required maintenance and repairs to the bridge.

  • NAVIGATION NOTICE Number SWL 23-25 McClellan-Kerr Arkansas River Navigation System

    Arthur V. Ormond Lock (No. 9) NM 176.9 has been reopened to traffic.

  • NAVIGATION NOTICE Number SWL 23-23 McClellan-Kerr Arkansas River Navigation System

    Mariners should expect to experience intermittent delays at James W. Trimble Lock (No. 13) NM 292.8 between May 31 and June 21.