5 Dec 2025

MKARNS Nav Notice SWL 25-82 MPLD Lock Closure

Montgomery Point Lock and Dam is closed to navigation due to silt and debris interfering with the operation of the lock’s miter gates.

3 Dec 2025

MKARNS Nav Notice SWL 25-81 Sailing Instructions NM 9.6 to NM 10.3

Due to shoaling and low White River stages, it is recommended to draft no more than 8 ft from NM 9.6 to NM 10.3. Additionally, it is advised to follow the centerline in this area. This issue is expected to improve as water levels rise in the coming days.

3 Dec 2025

MKARNS Nav Notice SWL 25-80 Lock 10 Reopened

The upstream miter gate repairs at Dardanelle Lock (No. 10) NM 205.5 have been completed and the lock is opened to traffic.

3 Dec 2025

MKARNS Nav Notice SWL 25-79 Lock 10 Reopening Update

Repairs to the upstream miter gates at Dardanelle Lock (No. 10) NM 205.5, due to an allision as referenced in Navigation Notice SWL 25-74, are nearing completion and the lock is expected to be open to traffic by the end of this week.

3 Dec 2025

MKARNS Nav Notice SWL 25-78 - Lock 3 Tow Haulage Out of Service

The tow haulage equipment at Joe Hardin Lock and Dam (No. 03) NM 50.2 is currently out of service due to ongoing work.

1 Dec 2025

MKARNS Nav Notice SWL 25-77 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.

1 Dec 2025

MKARNS Nav Notice SWL 25-76 Caution Advisory Dardanelle Pool NM 205.5 - NM 292.8

Mariners are advised that the Dardanelle Pool (No. 10) NM 205.5 to NM 292.8 will be operated near the lower limit of the navigation pool, elevation of 336 ft, beginning on November 28th, 2025.

23 Nov 2025

MKARNS Nav Notice SWL 25-75 MPLD Special Sailing Instructions - Width Restrictions

The downstream river wall miter gate at Mongomery Point Lock (No. 99) NM 0.5, is failing to recess due to an obstruction behind the gate.

22 Nov 2025

MKARNS Nav Notice SWL 25-74 Lock 10 Unscheduled Lock Closure

Due to an allision with the upstream miter gates, Dardanelle Lock (No. 10) NM 205.5 is currently closed to traffic. Engineers are onsite assessing the damage.

3 Nov 2025

MKARNS Nav Notice SWL 25-73 Sailing Instructions Lifted

The sailing instructions for NM 86.3, noted in Nav Notice SWL 25-31, NM 155.9 noted in Nav Notice 25-55 and NM 221.2 – 221.7 noted in Nav Notice SWL 25-46 have been lifted.