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  • 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.

  • Unlocking progress: Pittsburgh’s mega project takes shape with key contractors visiting Ohio River locking facility

    The Pittsburgh region is unlocking progress on the Ohio River by constructing a new navigation chamber to replace a smaller, aging lock that has been operating since 1936.

  • Below average runoff forecast for the upper Missouri River Basin in 2024

    **Last paragraph to note Forecast generation for 2024 is 8.6 billion kWh. It had been incorrectly stated as 2023.** The updated 2024 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. January runoff in the Missouri River Basin above Sioux City was 0.4 million acre-feet, 56% of average. Runoff was well-below-average due to much-below-normal temperatures over the whole Missouri River Basin and below-normal precipitation over most of the upper basin.

  • 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.

  • MKARNS Nav Notice No. SWL 24-12 Lock 7 Tow Haulage Out of Service

    The tow haulage equipment at Murray Lock (No. 7) NM 125.4 is currently out of service due to electrical issues. 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.