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Calcasieu River Bar Channel - New Orleans District

Project Information

Fiscal Year: 2005 Project Dates: 12/1/04 - 2/2/05
Contract Number: W912P8-05-D-0005
Project Description: On December 1, 2004, the COLUMBIA began work in the Mile -1.9 to Mile -4.2 bar channel reach. The required depth of dredging was -43 feet Mean Low Gulf (MLG) but dredging width was limited to a channel-centered width of 400 feet instead of the authorized 800-foot width. When the COLUMBIA began working on Mile -4.5 to Mile -7.0 bar channel reach on December 14, 2004, the dredging width was expanded to full channel dimensions. All work was performed in either the agitation mode, or in the dredge and haul mode with disposal into the ocean dredged material disposal site (ODMDS).
Maintenace / New Work: Maintenance Federal / Regulatory: Federal
Total Project Cubic Yards: 3405667 Total Days of Dredging: 57 Total Hours of Dredging: 0
Type of Material: Mud and silt Disposal Method(s) for Material: Dredge and haul, agitation
Total Turtle Takes: 0  
Observer Company Used: COastwise Consulting (?)

Predredge Trawling

Predredge Trawling Company: N/A  
Predredge Trawling? No
Are Predredge Reports Available? No
Loggerheads: 0 Greens: 0
Kemp's Ridley: 0 Other: 0

Relocation Trawling

Relocation Trawling? Yes
Relocation trawling was initiated for this work following the incidental take of two loggerhead sea turtles on the Mississippi River-Gulf Outlet (MR-GO) on December 6, 2004. It was decided to suspend relocation trawling efforts on December 30, 2004 due to low water temperatures recorded at the Calcasieu River and MR-GO bar channels.
Relocation Company: Coastwise Consulting, Inc.
Loggerheads: Greens:
Kemp's Ridley: Leatherbacks:
Total number turtles relocated: 0 Are Relocation Reports Available? No
Are Dredging Records Available? No Are original turtle take data still available? No
Description of mitigation measures/dates used: Deflectors, relocation trawling (12/10-12/31), windows (11/30-3/31).
Other Remarks: During this maintenance dredging work no sea turtle incidental takes, relocations, or sightings were recorded. Water temperatures during this work were generally within the range of sea turtle tolerances with the exception of the December 26-28, 2004, period when surface water temperatures of 49°F (9.4°C) were recorded. cys provided by B & B dredging (note 3,405,667 cys reported from New Orleans for this dredge).

Dredges for Project:

Turtle Takes during Project:

  • There were no turtle takes by a dredge

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Webdate: January 14, 2005
Updated: February 25, 2013
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