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ACBL’s Daily River Conditions

Monday, August 31st, 2026

  • Upper Miss Closeout – ACBL has sent out our annual guidance for final release dates to the Upper Miss and final departure dates off of this river. Click here for our full guidance.
  • Lower Miss Operational Impact –
    • Due to the current river stage and operating conditions, ACBL has implemented draft restrictions listed below.
      • Loading drafts are not currently reduced NBD Gulf to Cairo.
      • Tow size has been reduced pending horsepower classification by 13% (5 barges)
    • Normal Water Stages:
      • Caruthersville to Memphis (LM 869- 725): 20′ – 5′
      • Memphis to Vicksburg (LM 725 – 439): 40′ – 20′
      • Vicksburg to Natchez (LM 439- 303): 30′ – 10′
    • Low Water Stages:
      • Caruthersville to Memphis (LM 869- 725): Below 5′
      • Memphis to Vicksburg (LM 725 – 439): Below 20′
      • Vicksburg to Natchez (LM 439- 303): Below 10′
    • For current river stage information, please refer to the links at the bottom of this page.

  • Smith Bay Channel Closure (UM 529.8 – 530.1) – Hydraulic dredging operations began July 27th and will continue until further notice at Smith Bay. Dredging will be performed 7 days a week, 24 hours per day. Passing of traffic will be allowed at 0000, 1100, and 2100 as follows: passenger vessels will have priority, followed by NB traffic and lastly SB traffic.
  • Lock 25 (UM 241.40) – Lock will be closed daily from 0700 – 1900 on Monday to Saturday from August 19th to September 19th for repairs.
    • August 31st 05:30: Passed 8 tow(s) in the last 24 hours, which averaged 18.4 hours of delay. LPMS shows 1 tow(s) waiting, averaging 13 hours of delay.

  • Brandon Road Lock Closure (IR 286.00) – Weekday (Monday-Friday) lock closures starting September 21st, 2026 through April 31st , 2028 from 0600 – 1800 for rock excavation in channel and wall construction at the lock approach area. UPDATE: A stop work order was issued on July 24th to halt construction on the Brandon Road Interbasin Project (BRIP). The U.S. Army Corps of Engineers is currently keeping the navigation notice in place, pending further developments/updates from the Administration.

  • J.P. Murtha Lock & Dam aka Lock 4 (MR 41.5) – Lock 4 will be closed to navigation on Tuesdays, Wednesdays, and Thursdays from 0600 to 1600 from August 3rd through October 1st. The locks will reopen for navigation on those days from 1600 to 0600 the following morning. 
  • Emsworth Lock Closures (OR 6.2) – Beginning April 27th thru Sept. 4th, the auxiliary chamber will be closed daily from 0600 to 2359, and the primary chamber will have intermittent closures for filling valve maintenance. Primary chamber tow restriction: max tow width of 78 feet.
    • August 31st 05:30: Passed 7 tow(s) in the last 24 hours, which averaged 1.8 hours of delay. LPMS shows 0 tow(s) waiting, averaging 0.0 hours of delay.
  • Captain Anthony Meldahl Lock & Dam (OR 436.0) – Beginning August 24th, the main lock chamber will be closed for repairs. Work is expected to be completed on or about January 6, 2027. All traffic will use the auxiliary chamber during this time.
    • August 31st 05:30: Passed 9 tow(s) in the last 24 hours, which averaged 7.3 hours of delay. LPMS shows 3 tow(s) waiting, averaging 13.0 hours of delay.
  • Cannelton Lock Chamber Closure (OR 720.7) – Cannelton Auxiliary Chamber will be closed from August 31 through September 19 to upgrade lock controls and install an interlock system. All traffic will use the Main Chamber during this time.
    • August 31st 05:30: Passed 7 tow(s) in the last 24 hours, which averaged 0.0 hours of delay. LPMS shows 0 tow(s) waiting, averaging 0.0 hours of delay.
  • Newburgh Lock Chamber Closure (OR 776.1) – Chambers will have intermittent closures from August 28 through October 08 for repairs to the hydraulic systems. One chamber will remain in service to pass traffic at all times.
    • August 31st 05:30: Passed 10 tow(s) in the last 24 hours, which averaged 1.3 hours of delay. LPMS shows 0 tow(s) waiting, averaging 0.0 hours of delay.
  • Smithland Lock & Dam Closure (OR 918.5) – Smithland Locks & Dams will have a 12-week closure (6 weeks per chamber) to upgrade the lock controls, August 24th through November 16. The closure will start with the Land Chamber and once work is complete, the River Chamber will then be closed. During this time, one chamber will remain open to navigation traffic.
    • August 31st 05:30: Passed 13 tow(s) in the last 24 hours, which averaged 5.0 hours of delay. LPMS shows 0 tow(s) waiting, averaging 0.0 hours of delay.
  • Olmstead Lock & Dam (OR 964.6) – The River Chamber will be closed from October 3 through November 13 for a dewatering and repairs to the miter gates. All traffic will use the Land Chamber during this time.
  • Arkansas River Lock Closures (multiple locks) – Daily lock closures from 0700 – 1900 from June 15th through September 30th for work related to the 110-ft Stoplog Conversion project. These closures will occur at the following locations : Dardanelle Lock (No. 10) – AK 205.5, James W. Trimble Lock (No. 13) – AK 292.8, Murry Lock (No.7) – AK 125.4, Toad Suck Ferry Lock (No. 8) – AK155.9, Arthur V. Ormond Lock (No. 9) – AK 176.9, and Ozark Jetta-Taylor Lock (No. 12) – AK 256.9. Transit times will be substantially impacted.
  • Barkley Lock (CR 30.6) – Full lock closure August 10th thru September 30th to make repairs to the miter gates. Traffic may pass by taking the alternate route via Kentucky Lock and the Barkley Canal.
  • Kentucky Lock (TR 22.30) – Kentucky Lock may experience longer than normal delays due to the closure at Barkley Lock.
    • August 31st 05:30: Passed 6 tows in the last 24 hours, which averaged 86.4 hours of delay. LPMS shows 22 tow(s) waiting, averaging 37.8 hours of delay.
  • Glover Wilkins Lock Closure (TTW 376.3) – Scheduled 30-day closure to perform critical maintenance activities will occur from September 9th thru October 10th.
  • Thad Cochran Lock Closure (TTW 371.1) – Scheduled 30-day closure to perform critical maintenance activities will occur from September 10th thru October 10th.
  • Calcasieu Lock North Chamber Wall Replacement (WC 238) – Scheduled closure from May 20th through approx. September 31st. Calcasieu Lock will have daytime closures Monday through Friday from 0700-1900 for major repairs to the north chamber wall. The maritime industry anticipates these closures will result in significant delays of 3-5 days. ACBL will continue to monitor the situation closely and will provide updates and additional information as it becomes available.
    • August 31st 05:30: Passed 37 tows in the last 24 hours, which averaged 1.2 hours of delay. LPMS shows 2 tow(s) waiting, averaging 12.0 hours of delay.
  • Brazos Lock Closure (WC 401) – As of July 6th, lock closures have shifted back to daytime. Restrictions will take place Monday-Friday, between 0700 and 1900 through August 28th to allow for allision repair work.
    • August 31st 05:30: Passed 49 tows in the last 24 hours, which averaged 5.4 hours of delay. LPMS shows 0 tow(s) waiting, averaging 0 hours of delay.
  • Colorado River Lock Closure (WC 441.5) – Colorado River Lock will be closed daily for West Lock South Riverside Sector Gate repairs from August 19 through September 18 from 0800 – 1800, excluding weekends and holidays.
    • August 31st 05:30: Passed 29 tows in the last 24 hours, which averaged 3.0 hours of delay. LPMS shows 3 tow(s) waiting, averaging 15.0 hours of delay.
  • Jackson Railroad Bridge Closure (WT 89.9) – They will be repairing steel and installing scaffolding on the Jackson railroad drawbridge. There will be two separate maintenance closures to install the scaffolding where the drawbridge will not open to vessels.
    • 24 August 2026 to 27 August 2026, 6:00 a.m. to 6:00 p.m. each day
    • 31 August 2026 to 3 September 2026, 6:00 a.m. to 6:00 p.m. each day

Links to Current River Stages:

River Closure & Restricted Movements

Lower Miss/Gulf/Canals/Tenn Tom
Ohio/Tennessee/Cumberland

Weather Information

Precipitation Forecast Inland Waterway Weather Report National Hurricane Center

Additional Information

River Stages Lock Closures and Information Archive

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