Notice to Navigators: Upper Mississippi River

NOTICE TO MARINERS
UPPER MISSISSIPPI RIVER BASIN

LNM 11-22

 

SECTION I - SPECIAL NOTICES

This section contains information of special concern to the Mariner.

 

UPPER MISSISSIPPI RIVER - LOWER MISSISSIPPI RIVER - OHIO RIVER - CHANNEL CONDITIONS/SAFETY ADVISORY – UPDATE

Extreme high-water conditions exist on the Upper Mississippi River, between approximate Miles 5.0 and 0.0, on the Lower Mississippi River, between approximate Miles 953.0 and 939.0, and on the Ohio River, between approximate Miles 976.0 and 981.0. The COTP Ohio Valley has issued a Safety Advisory, recommending vessels not meet, pass or overtake in these areas. Down-bound tows should consider tow width and red flag barges should be placed in a protected location in the tow. While the overall river stage is decreasing, drift and debris may pose navigation obstructions and may drag buoys off station. It is recommended that all vessels avoid laying-up on levees and assess bridge clearance in advance. This Safety Advisory will remain in effect until river stages subside, by falling below 39 feet on the Cairo Gauge. Mariners should report navigation obstructions immediately to the U.S. Coast Guard via VHF-FM Channel 16.

 

SECTION V - ADVANCE NOTICES

This section contains advance notice of approved projects, changes to aids to navigation, or upcoming temporary changes such as dredging, etc. Mariners are advised to use caution while transiting these areas.

 

UPPER MISSISSIPPI RIVER

The Coast Guard will make the following change after May 10, 2022: Change Milkmans Island Light (LLNR-14055) at mile 601.1, Right Descending Bank, in approximate position 42-40-31.947N/090-54-06.489W, showing Fl G 4s, to Milkmans Island Daybeacon (LLNR-14055) CNG upstream, SG downstream on rock mound.

  

SECTION VII – GENERAL

This section contains information of general concern to the Mariners. Mariners are advised to use caution while transiting these areas.

  

MILE 364.2 - L/D CLOSURE

On March 23, 24, 29 and 30, 2022, L/D 19, in the vicinity of Mile 364.2, will be closed to navigation for repairs. During these closures, mariners are requested NOT to tie up along the guidewalls. Mariners may contact the L/D via VHF-FM Channel 14 or at (319) 524-2631, for additional information.

 

MILE 305.2 - MILE 304.9 - DREDGE OPERATION

Continuing until further notice, mechanical dredging operations are being conducted in the vicinity of Harris Island, Miles 305.2 - 304.9. Dredging will be performed 7-days a week, 10-hours a day, from 7:00 a.m. to 5:30 p.m. Mariners can contact M/V CLINTON or M/V DAVENPORT on VHF-FM Channel 13, 14, 16 or 82, 30-minutes prior to transiting the area. Mariners are urged to transit at their slowest safe speed to minimize wake and proceed with caution after passing arrangements have been made.