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  • MKARNS Nav Notice No. SWL 23-69 UPDATE 2: White River Entrance Channel

    All traffic on the locking queue at Montgomery Point Lock & Dam (NM 0.5) has been cleared and normal locking procedures have begun. However, dredging operations downstream of the Montgomery Point Lock & Dam (NM 0.5) are ongoing.

  • MKARNS Nav Notice No. SWL 23-68 UPDATE: White River Entrance Channel

    Dredging operations are progressing downstream of Montgomery Point Lock & Dam (NM 0.5). The Dredge Sandpiper is currently dredging in the downstream approach to the lock with plans to continue in this area until the morning of Thursday, October 26, 2023.

  • MKARNS Nav Notice No. SWL 23-67 Lock 3 Reopened

    The hydraulic system at Joe Hardin Lock (No. 3) NM 50.2 has been repaired and is back in service. The Lock is reopened to navigation traffic.

  • MKARNS Nav Notice No. SWL 23-66 Lock 3 Unscheduled Closure

    The Joe Hardin Lock (No. 3) NM 50.2 is experiencing issues with the hydraulic system and is temporarily closed to traffic. Crews are onsite and will have the Lock reopened as soon as the problem can be resolved. A subsequent Navigation Notice will be issued once the Lock has been opened to traffic.

  • MKARNS Nav Notice No. SWL 23-64 UPDATE: WREC Channel Restriction and Delays

    Crews arrived in the area on Sunday, October 15, 2023, to begin clamming in the downstream approach at Montgomery Point Lock & Dam (NM 0.5). A Notice to Proceed has been given to the Contract Dredge Sandpiper who is expected to arrive in the area and begin dredging on or before Saturday, October 21, 2023. The Dredge Sandpiper is expected to complete dredging operations below Montgomery Point Lock & Dam on or around Saturday, October 28, 2023.

  • MKARNS Nav Notice No. 23-62 - TOW HAULAGE OUT OF SERVICE DAVID D. TERRY LOCK (No. 6) NM 108.1

    The tow haulage equipment at David D. Terry Lock (No. 6) NM 108.1 is currently out of service. Double cut tows will have to be locked the conventional way (without the use of tow haulage). Another notice will be distributed when the tow haulage equipment is back in service.

  • MKARNS Nav Notice No. SWL 23-61 Lock 10 Intermittent Delays

    Mariners should expect to experience intermittent delays at Dardanelle Lock (No. 10) NM 205.5 between the hours of 7:00 a.m. and 5:30 p.m on October 19, 2023. The intermittent delays are required to facilitate underwater dive operations in the Lock chamber.

  • NAVIGATION NOTICE: SWL 23-56 - McClellan-Kerr Arkansas River Navigation System

    Mariners are advised that crews will be placing rip rap around the Van Buren Railroad Bridge (NM 300.8).  Work will be performed daily from 6 a.m. to 6 p.m., September 25 through October 4, 2023.  Mariners may contact the onsite workboat, M/V Pine Bluff, on VHF-FM channel 16 or 78 or by phone at (318) 452-5448.  Mariners are advised to transit the area with caution.

  • Navigation Notice: SWL 23-55 McClellan-Kerr Arkansas River Navigation System

    Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should favor the short wall in the downstream approach at Montgomery Point Lock and Dam (NM 0.5). Also, a 70-ft width restriction is in place to reduce the risk of grounding in the area. Crews are being dispatched to perform digging and clamming operations in the reach. A subsequent navigation notice will be issued once the shoaling has been cleared and the 70-ft width restriction has been lifted.

  • MKARNS NAVIGATION NOTICE - The Lock interlock system upgrades at Joe Hardin Lock (No. 3) NM 50.2 are complete

    The Lock interlock system upgrades at Joe Hardin Lock (No. 3) NM 50.2 are complete. The Lock is fully opened to navigation traffic and no further delays or closures associated with upgrading the Lock interlock system are expected.