Home » Projects » Marsh Restoration: Whiskey Island, Louisiana

Marsh Restoration: Whiskey Island, Louisiana

Louisiana Department of Natural Resources (LDNR)

Integrated hydrographic/geophysical surveys and a vibratory coring program were completed in the Gulf of Mexico in the waters offshore of Whiskey Island, Louisiana for the LDNR and The United States Environmental Protection Agency. OSI completed these investigations under subcontract to T. Baker Smith & Sons. The primary objective of the LDNR was to restore a portion of the back-barrier salt marsh environment on Whiskey Island by the creation of a dune and a marsh platform using nearshore sediment resources.

Ocean Surveys, Inc. completed the surveys and coring as three separate tasks.

  • Task 1 consisted of the acquisition and analysis of more than 260 statute miles of multi-sensor geophysical data in a search area measuring approximately 23 square miles in size. Three areas were identified as having higher potential to contain sediments deemed suitable for restoration.
  • Task 2 consisted of the acquisition and analysis of 48 vibratory cores obtained within each area to gain a better understanding of the subbottom stratigraphy and enable better mapping of the sediment resources.
  • Task 3 was performed to identify and map potential obstructions to future dredging operations, to address the cultural resource assessment aspect of the project, and to refine volume estimates.

Related Projects


Searsport Fig. 2

Archaeological Investigation: Searsport, Maine

Ocean Surveys conducted a marine geophysical investigation in Searsport Harbor, Maine in support of a U.S. Army Corps of Engineers (New England District) channel deepening project. The investigation was designed to provide information both for marine archaeological assessment of the ...
Read More
Navigable Waterways Fig. 8

Charting Navigable Waters

OSI was a subcontractor to the prime on NOAA’s very first contracted hydrographic survey.  Since 1999, OSI has acted as a prime contractor surveying thousands of square nautical miles of seafloor on behalf of NOAA (see table below).  In all ...
Read More
Coastal Monitoring: Offshore Bethany Beach, Delaware

Coastal Monitoring: Offshore Bethany Beach, Delaware

In 1988 several pieces of artillery shells were discovered on Bethany Beach and Sea Colony Beach in Delaware. A recent beach replenishment project used sand recovered from a borrow area within the bounds of a historic anti-aircraft target range operated ...
Read More
Expanding Navigable Waterways: Savannah, Georgia

Expanding Navigable Waterways: Savannah, Georgia

A geophysical survey investigation in the Savannah River Entrance Channel was conducted by Ocean Surveys for the U.S. Army Corps of Engineers. The investigation was specifically designed to complement and expand upon subbottom data that was previously acquired by OSI ...
Read More
Power Generation and Distribution: Puerto Cortes, Honduras

Power Generation and Distribution: Puerto Cortes, Honduras

Ocean Surveys performed a multi-disciplined marine investigation including hydrographic, geophysical, oceanographic, meteorological and biological studies in the waters off Puerto Cortes in the Gulf of Honduras. This investigation was conducted to collect scientific data in support of the design of ...
Read More
Submarine Cable Fig. 2

Submarine Cable and Pipeline Routing: Massachusetts Bay

Ocean Surveys, Inc. initially performed a desktop study to compile geologic, oceanographic, sediment chemistry, and marine activity background information supporting the feasibility assessment of the project. This research was followed by a reconnaissance level marine geophysical survey along an alignment ...
Read More
Submarine Outfall Placement: Offshore of Sosua, Dominican Republic

Submarine Outfall Placement: Offshore of Sosua, Dominican Republic

Ocean Surveys conducted an oceanographic and geophysical data collection program in near shore waters off of Sosua, Dominican Republic, to support a joint project between the Dominican government and the World Bank. The project required a detailed investigation of the ...
Read More
Windfarm_Cover

Wind Farm Development: Atlantic Ocean, Offshore Rhode Island

From 2009 to 2017, OSI provided extensive survey and data analysis services in support of all phases of the design, permitting, and construction of five wind turbines, inter-array, and export cables for Deepwater Wind's Block Island Wind Farm - the ...
Read More