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US Army Corps of Engineers

Little Rock District Website

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Navigation

Navigation Home

Navigation Notices

Recon Surveys

David D. Terry L&D MRER

Points of Contact

Navigation & Maintenance
(501) 324-5739

Reservoir Control
(501) 324-6237

Pine Bluff Project Office
(870) 534-0451

Russellville Project Office
(479) 968-5008

Montgomery Pt L&D
(870) 548-3400

Norrell Lock
(870) 548-2796

Lock No. 2
(870) 548-2791

Joe Hardin Lock
(870) 479-3164

Emmett Sanders Lock
(870) 534-2127

Col Charles D. Maynard Lock
(501) 842-2761

David D. Terry Lock
(501) 961-9281

Murray Lock
(501) 663-1997

Toad Suck Ferry Lock
(501) 327-0853

Arthur V. Ormond Lock
(501) 354-8402

Dardanelle Lock
(479) 890-4987

Ozark-Jeta Taylor Lock
(479) 667-2120

James W. Trimble Lock
(479) 452-0488

Navigation Notices

26 Jun 2025
MKARNS Nav Notice No. SWL 25-42 Lock 9 Reopened
Arthur V. Ormond Lock (No. 9) NM 176.9 has reopened to navigation traffic.
17 Jun 2025
Single lane closure scheduled for Highway 187 across Beaver Dam
The U.S. Army Corps of Engineers will be closing one lane of the Highway 187 bridge across Beaver Dam from 8 a.m. until 5 p.m. June 26, 2025, for a routine bridge inspection.
17 Jun 2025
MKARNS Nav Notice No. SWL 25-46 SAILING INSTRUCTION NM 221.2 to NM 221.7
Due to shoaling, mariners are advised that until further notice, both upbound and downbound tows should run the green line from NM 221.2 to 221.7.
17 Jun 2025
MKARNS Nav Notice No. SWL 25-45 Lock 9 Closure - High flows
Due to high flows on the McClellan-Kerr Arkansas River Navigation System, the Arthur V. Ormond Lock (No. 9) NM 176.9 is closed to traffic. The lock will reopen as the flows drop to safe navigation levels.
12 Jun 2025
MKARNS Nav Notice No. SWL 25-44 Lock 5 Tow Haulage Out of Service
The tow haulage equipment at Colonel Charles D. Maynard Lock (No. 5) NM 86.3 is currently out of service. 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.
12 Jun 2025
MKARNS Nav Notice No. SWL 25-43 Lock 1 Navigation Pass Open (Through Lock)
The tailwater elevation at Norrell Lock (No. 1) NM 10.3 has exceeded 143.0 feet. All vessels will be directed to transit through the lock chamber with pinned open gates while the tailwater elevation remains above 143.0 feet.
10 Jun 2025
MKARNS Nav Notice No. SWL 25-41 Lock 9 Closure - High flows
Due to high flows on the McClellan-Kerr Arkansas River Navigation System, the Arthur V. Ormond Lock (No. 9) NM 176.9 is closed to traffic. The lock will reopen as the flows drop to safe navigation levels.
4 Jun 2025
MKARNS Nav Notice No. SWL 25-40 Lock 13 Closure Notice
A partial lock closure is scheduled for James W. Trible Lock (No. 13) NM 292.8 beginning June 15th, 2025, through September 30th, 2025. During this time, the Lock will be closed daily between the hours of 7:00 a.m. and 7:00 p.m. The lock will be opened to traffic each night between the hours of 7:00 p.m. and 7:00 a.m., however a 70-ft width restriction will be in place.
4 Jun 2025
MKARNS Nav Notice No. SWL 25-39 Lock 10 Closure Notice
A partial lock closure is scheduled for Dardanelle Lock (No. 10) NM 205.5 beginning June 15th, 2025, through September 30th, 2025. During this time, the Lock will be closed daily between the hours of 7:00 a.m. and 7:00 p.m. The Lock will be opened to traffic each night between the hours of 7:00 p.m. and 7:00 a.m., however a 70-ft width restriction will be in place.
3 Jun 2025
MKARNS Nav Notice No. SWL 25-38 Lock 1 Dewater Canceled
The dewatering operation, scheduled for the fall of 2025, at Norrell Lock and Dam (NM 10.3) has been canceled.

2023 MKARNS Waterway Action Plan
(pdf reader required)

Internal Links

External Links

U.S. Coast Guard ...
U.S. Coast Guard
Inland Electronic Navigation Charts
33 CFR 207- Navigation and Navigable Waters, MKARNS
36 CFR 327- Rules and Regulations, dated: May 2000
Arkansas Waterways Commission ...
Arkansas Waterways Commission
Little Rock Port Authority ...
Little Rock Port Authority
Port of Muskogee ...
Port of Muskogee
Tulsa Port of Catoosa ...
Tulsa Port of Catoosa
Oklahoma Department of Transportation Waterways Branch ...
Oklahoma Department of Transportation Waterways Branch