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  • Navigation Notice 20-40: Nickajack Lock adjusts closure dates

    Nickajack Lock at Tennessee River mile 424.7 in Jasper, Tennessee, is closed Sept. 15 through 6 p.m. Oct. 5, 2020. The lock will then undergo intermittent closures between 6 a.m. and 4 p.m. daily Oct. 6-13, 2020. It will resume normal operations 4 p.m. Oct. 13, 2020. The lock closures allow maintenance personnel to perform repairs on the upper and lower lock gates. Call the lock at 423-667-0280 for more information. This announcement is a related update to Navigation Notice 20-26.

  • Navigation Notice 20-38: Intermittent closures at Chickamauga Lock

    Chickamauga Lock at Tennessee River mile 471 in Chattanooga, Tennessee, is closing intermittently from 9 a.m. to 4 p.m. Sept. 16 and 17, 2020 while Tennessee Wildlife Resource Agency performs mussel surveys at the tailwater lower approach to the lock. Mariners should stay clear of the area during this time period due to divers in the water. Contact Chickamauga Lock at 426-875-6230 or via Marine channel 13/16 with any questions or concerns.

  • Navigation Notice 20-34: Change in operations at Kentucky Lock

    On or about Sept. 11, 2020, the concrete-filled guard cell in Kentucky Lock’s lower approach will be placed into operation. As a result, the lock will revert to normal sequence of lockage operations; thus, cancelling the night time lockage restrictions for upbound vessels described in NTNI LRN 20-11.

  • Navigation Notice 20-33: Low flow warning at Cheatham Lock

    Cheatham Lock at Cumberland River mile 148.6 in Ashland City, Tennessee, announces that due to diving operations at Cheatham Dam between Sept. 21-24, 2020, there will be periods of little to no flow during daylight hours. The water level at the lower approach of Cheatham Lock will likely NOT drop below normal minimum pool conditions (354.0 ft.) but will approach that elevation. Mariners should take extra caution on the lower approach and not overload their barges or exceed channel depths on these dates. For more info, call the lock at 615-792-0627.

  • Navigation Notice 20-30: Intermittent closure of Chickamauga Lock scheduled Aug. 11-12, 2020

    Intermittent closures are expected on the lower end of Chickamauga Lock at Tennessee River mile 471 due to a survey 7 a.m. to 5 p.m. Aug. 11 and 7 a.m. to 1 p.m. Aug. 12. No lockage on either day will be started that cannot be completed by 7 a.m. Contact the lock at 423-875-6230 for more information.