This chapter discusses barrier-island morphology and subenvironments, storm impacts to barrier-island morphology, and short-term, poststorm recovery of barrier islands, focusing particularly on tropical storms. Vulnerabilities of barrier islands include risks associated with sea-level rise, as well as energetic ocean events, such as tsunamis and storms, the latter of which are crucial in reshaping barrier islands. Roberts Briggs, in Coastal and Marine Hazards, Risks, and Disasters, 2015 Abstractīarrier islands, or narrow strips of sand islands in the sea, have the distinction of being among the most vulnerable, yet most desirable sites for human habitation. Once they get there and if funding becomes available, they will proceed to completion, then land rights, permits, etc.Ping Wang, Tiffany M. The State is working to be at 90% on design and engineering in 2018. West Grand Terre Beach Nourishment and Stabilization Project is a project to restore and enhance dune and back barrier marsh habitat to provide storm surge and wave attenuation, thereby addressing the issues of gulf shoreline erosion, diminished storm surge protection, and subsidence of back barrier marshes. These islands separate the Gulf of Mexico from Barataria Bay and are thus an important first line of defense for the interior marshes of Louisiana. Shoreline recession rates are approximately 30 to 40 feet year. Pass Abel continued to expand resulting in East and West Grand Terre. Grand Terre was a continuous island until 1926 when Pass Abel was created during a hurricane. We hope to advertise by beginning July and start construction by sometime in August/September.Įast/West Grand Terre Islands Restoration Project With the sand lease from the Bureau of Ocean Energy Management and the final design package, the State will be submitting to facility planning for advertising. NOAA will be leading the implementation of the Chenier Ronquille component, and DOI will be leading the implementation of the North Breton Island component. The CPRA will be leading the implementation of two components of this project, Shell Island West which is currently out for bid and the Caillou Lake Headlands project which is anticipated to bid within the next six months. The goal of the Louisiana Outer Coast Restoration project is to restore beach, dune, and back-barrier marsh habitats, as well as brown pelicans, terns, skimmers, and gulls to help compensate the public for spill-related injuries and losses to these resources. The total estimated cost is approximately $318 million. This project is being implemented with early restoration funds associated with the Deepwater Horizon oil spill. The four locations are Caillou Lake Headlands (also known as Whiskey Island), Chenier Ronquille, Shell Island (West Lobe and portion of East Lobe), and North Breton Island (a part of the Breton National Wildlife Refuge). The Louisiana Outer Coast Restoration project involves the restoration of beach, dune, and back-barrier marsh habitats at four barrier island locations in Louisiana. Louisiana Outer Coast Restoration Project This type of project may incorporate a variety of restoration techniques, such as the placement of dredged material to increase island height and width, the placement of structures to protect the island from erosive forces, and the placement of sand-trapping fences, which are used in conjunction with vegetation plantings, to build and stabilize sand dunes on barrier island beaches. Barrier island restoration projects are designed specifically to protect and restore the features unique to Louisiana’s barrier island chains.
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