Notice to Navigators: Lower Mississippi River

NOTICE TO MARINERS
LOWER MISSISSIPPI RIVER
LNM 42-20

 

SECTION VII - GENERAL

 

MILE 900.3 - MILE 898.6 - CHANNEL CONDITION – UPDATE

Shoaling has been reported between approximate Miles 900.3 and 898.6. It is recommended that mariners transiting the area, review the latest USACE surveys. Mariners are urged to exercise caution in the area.

 

MILE 770.0 - MILE 755.0 - USACE PROJECT WORK/TEMPORARY CHANNEL CLOSURES

Continuing until approximately November 7, 2020, the USACE Contract Vessel SHERYL and associated barges will conduct work in the vicinity of Mile 759.0, LDB, Cedar Point-Densford Dikes.

 

Work will be conducted from 7:00 a.m. until 6:00 p.m., each day. Rolling channel closures may be required to facilitate this project.

 

The following limits are recommended:

 

South-bound tows:

 

Call in at Mile 770.0, to be placed in the queue. Transit this area during nighttime hours only.

 

North-bound tows:

 

Call in at Mile 755.0, to be placed in the queue. Transit during daytime hours only when;

  • The south-bound queue has been cleared and transiting north-bound would not impede south-bound traffic in the vicinity.

 

Mariners are requested to transit as far off the LDB, from Mile 761.0 to Mile 757.0, as is safe, not meet or pass, to transit at their slowest safe speed and to make passing arrangements with the M/V SHERYL via VHF-FM Channel 13, 16 or 72 or via phone at (573) 803-7166. Mariners are urged to exercise caution in the area.

 

MILE 719.0 - MILE 718.0 - CHANNEL CONDITION

Shoaling has been reported between approximate Miles 719.0 and 718.0. Mariners are urged to exercise caution in the area.

 

MILE 703.1 - CHANNEL CONDITION

Shoaling has been reported in the vicinity of Mile 703.1, extending into the navigation channel approximate 150 feet, from the LDB. Mariners are urged to exercise caution in the area.

 

MILE 591.5 - MILE 590.0 - CHANNEL CONDITION

Shoaling has been reported between approximate Miles 591.5 and 590.0, near the left descending side of the channel. Mariners are urged to exercise caution in the area.

 

MILE 487.0 - MILE 485.0 - DREDGE OPERATION

Continuing until approximately November 9, 2020, the Dredge JADWIN is conducting dredging operations between Mile 487.0 and 485.0, BaleshedStack Island revetment. The Dredge JADWIN will monitor VHF-FM Channel 13 or 16, for passing arrangements. Mariners are urged to transit the area at their slowest safe speed to minimize their wake and proceed with caution after passing arrangements have been made.

 

MILE 417.0 - MILE 411.0 - STONE BANK PAVING OPERATION

Continuing until approximately November 15, 2020, Pontchartrain Partners L.L.C., is conducting stone bank paving operations in the vicinity of Mile 413.0, RDB, Point Pleasant Revetment, in approximate position 32-06-30.0N 091-06-25.0W. Work will be conducted in 12-hour shifts, 7-days a week. The floating plant will consist of the M/V LIL EMI, an excavator mounted on a 140-foot by 40-foot spud barge and a 22-foot crew boat. Mariners are requested to transit from Mile 417.0 to Mile 411.0, as far off the RDB as is safe, not meet or pass and transit the area at their slowest safe speed and to make passing arrangements with the M/V LIL EMI. The M/V LIL EMI will monitor VHF-FM Channel 72 or at (504) 460-6603. Mariners are urged to exercise caution in the area.

 

MILE 266.5 - SUBMERGED OBSTRUCTION

A submerged obstruction has been reported in the vicinity of Mile 266.5, LDB, at the edge of the navigation channel. The obstruction has been described as approximately 500 concreate blocks with approximately 12 feet over the top, at current river stage, on October 18, 2020. The obstruction is reportedly not marked and is covered by a USACE anchor fleet until approximately November 2, 2020. Mariners are urged to exercise caution in the area.