USCG MSIB – Carrollton Gauge at 9 Feet and Falling

Below is the USCG Marine Safety Information Bulletin – Carrollton Gauge at 9 Feet and Falling.
Highlights include:
  • Governor Nicholls, Gretna, and Westwego Traffic lights have been turned off.

Additionally, the following regulations are no longer in effect:

  • All deep draft vessels must have three means to hold position.
  • All cargo transfers authorized in designated anchorages as well as mid-stream cargo transfers, are required to submit for review a Notice of Midstream Transfer 48-hours prior to commencing transfer operations within the Captain of the Port New Orleans (COTP) zone.

The Carrollton Gauge indicates a Mississippi River stage of 9 feet and falling.

As a result of the Carrollton Gauge reading 9 feet and falling, the following measures are now in effect:

  1. In accordance with 33 CFR 161.65, the Governor Nicholls Harbor Traffic Control Light 94, Gretna Harbor Traffic Control Light 97 and the Westwego Traffic Light 102 have been de-energized. The harbor traffic control lights are located at:  Governor Nicholls Light, MM 94.3, AHP, LDB, LMR (LLNR 13855/34770); Gretna Light, MM 96.6, AHP, RDB, LMR (LLNR 13880/34795); and, the Westwego Traffic Light, MM 101.4, AHP, RDB, LMR (LLNR13950).
  2. The Governor Nicholls Navigation Light 94 and the Gretna Navigation Light 97 are operating properly.


The following regulations are no longer in effect:

  1. 33 CFR 165.810 (b)(2) describes high-water requirements for all vessels operating in the Lower Mississippi River below mile 233.9 AHP including South Pass and Southwest Pass.
  2. The Algiers Point Vessel Traffic Control lights are energized and vessel traffic is being regulated in the vicinity of Algiers Point. The Vessel Traffic Control lights are located at Governor Nicholls Light, 94.4 AHP, LBD, LMR (LLNR 13630/33185), Gretna Light, 97.6 AHP, RDB, LMR (LLNR 3655/33210) and the Westwego Repeater Light, 101.4 AHP, RDB, LMR (LLNR 13715).
  3. In accordance with 33 CFR 160.111 (c ), the COTP has determined that during periods of high water, unless moored to a shore side facility or mooring buoys, all deep draft vessels must have three means to hold position.  An example would be two fully operational anchors and the propulsion system in standby. Should a vessel lose an anchor or become inoperable with no redundant capabilities available, such as aft anchors or two main engines, a third means of holding position could be via tug assist.
  4. All cargo transfers authorized in designated anchorages as noted in 33 CFR 110.195, as well as mid-stream cargo transfers, are required to submit for review a Notice of Midstream Transfer 48-hours prior to commencing transfer operations within the Captain of the Port New Orleans (COTP) zone.

This Marine Safety Information Bulletin supersedes Volume XVIII, Issue 043 Carrollton Gauge at 12 Feet and Falling.