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TD 2025-7, Shoaling, Lock 18 Lower Approach

Operations
Published July 28, 2025
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SHOALING NM 421.3 TO 421.4 LOCK 18 LOWER APPROACH USE EXTREAM CAUTION WHILE TRANSITTING THIS AREA

 

Mariners are advised to use extreme caution while transiting the downstream approach to Lock 18, NM 421.3 to 421.4.  Shoaling is encroaching the left descending channel into the Lock approach ~20-ft off the guard wall.  Channel width is restricted to 90-ft of adequate depths. Upbound doubles may experience difficulties having adequate depths while transiting lightboat around barges.  To avoid the shoaling, mariners are advised to restrict tow widths to 90-ft transiting the lower approach.  Please see attached survey for further details.

 Further Navigation Notices may be released with updates, changes and/or more information. Questions or request for additional information concerning this notice should be directed to Mr. Kenneth Todd, Deputy Project Manager: 918- 543-2216 ext. 2 or Mr. Jacob Simpson; Navigation Field Engineer: 918-430-4783.    River Survey

 

//signed//

Parkey, Bobby J,
Deputy Chief, Operations Division

 

 


Recreational Lockage Policy

Locking at 14, 15, 16, 17 and 18 on the Oklahoma portion of the McClellan-Kerr Arkansas River Navigation System is available to recreational boaters 24 hours per day, 7 days per week. 

Oklahoma Lock and Dam Phone numbers:

W. D. Mayo L&D 14.............(918) 962-3481
Robert S. Kerr L&D 15.........(918) 775-2091
Webbers Falls L&D 16.........(918) 489-5987
Chouteau L&D 17................(918) 687-4501
Newt Graham L&D 18..........(918) 543-2216

For additional information concerning Navigation issues contact:

Navigation Project Office
HC 61 BOX 238
SALLISAW OK 74955
Phone: (918) 775-4475

FOR ISSUES REGARDING RECREATION ALONG THE NAVIGATION SYSTEM PLEASE CLICK HERE AND GO TO OUR CONTACT A LAKE PAGE.