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  • MKARNS Nav Notice SWL 26-10 MPLD Reopened - Width Restrictions

    Mongomery Point Lock & Dam (NM 0.5) has reopened to navigation traffic 24-hours per day. However, a 70-ft width restriction remains in place. All mariners are advised to exercise extreme caution when transiting the lock. Tows should align with the land wall when nearing the downstream approach to avoid contact with the downstream river wall miter gate. Additionally, mariners should continue to expect longer than normal lockage times. These locking instructions will remain in place until further notice.

  • MKARNS Nav Notice SWL 26-09 MPLD Partial Lock Reopening - Width Restrictions

    Due to ongoing hydraulic system repairs on the downstream river wall miter gate, Montgomery Point Lock & Dam (NM 0.5) is operating under the following restrictions until further notice: • Daily Closure: The lock will be closed to all traffic from 6 a.m. to 6 p.m. daily to allow for repair work. • Limited Opening: The lock will be available for transit from 6 p.m. to 6 a.m. daily. • Width Restriction: A 70-foot width restriction is in effect during operating hours.

  • MKARNS Nav Notice SWL 26-08 MPLD Unscheduled Closure

    Due to issues with the hydraulic system, Montgomery Point Lock and Dam (NM 0.5) is currently closed to traffic. Crews are onsite investigating the issue and will reopen the lock as soon as the repairs are completed. A subsequent Navigation Notice will be issued when the lock is reopened.

  • MKARNS Nav Notice SWL 26-07 MPLD Nav Pass Closed

    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 Nav Notice SWL 26-04 MPLD NavPass Closed

    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 Nav Notice SWL 26-03 MPLD NavPass Open

    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.

  • MKARNS Nav Notice SWL 26-02 Lock Closure Forecast - 2026

    The purpose of this Navigation Notice is to provide forecasted lock closures for the 110-ft Stoplog Conversion projects in 2026. The information below is considered tentative and the closure details could change depending on site conditions, construction means and methods and other variables.

  • MKARNS Nav Notice SWL 25-91 MPLD Nav Pass Closed

    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 Nav Notice SWL 25-90 MPLD Nav Pass Open

    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. Vessels may contact Montgomery Point Lock and Dam on Channel 16 for further information.

  • MKARNS Nav Notice SWL 25-89 Sailing Instructions NM 237.1 to NM 238.3

    Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should favor the red buoys from NM 237.1 to NM 238.3.