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NOAA CRP RESTORATION PROJECTS
YEAR 2007 - CRP Project #6002 (Gulf of Mexico)

Project #6002
North vermillion Bay Terracing/
Sediment Trapping Project

Weeks Island, Louisiana


Marsh Maneuver and AmeriCorps volunteers work to install terraces


Project name:   North vermillion Bay Terracing/Sediment Trapping Project  
Project number:   6002  
Project status:   Complete  
Grant Administrator:   Gulf of Mexico Foundation (for NOAA)  
Grantee:   McIlhenny Company  
Project location:   Weeks Island, Iberia Parish, Louisiana  
Grant period:   Jan 1 - Dec 31, 2020  
Grant amount:   $70,000  
Land Ownership:   Public  
Lat/Long:   Weeks Island: 29°48'00" N, 91°47'30" W  
Types of Habitat:   Open bay, intertidal marsh, submerged aquatics  
Project leader: Harold Osborn
Manager
McIlhenny Resources
Highway 329
Avery Island, LA 70513
(337) 373-6163

Species Benefiting From Restoration:
   • Brown Shrimp (Penaeus aztecus)
   • White Shrimp (Penaeus vannamei)
   • Red Drum (Sciaenops ocellatus)
   • Blue Crab (Callinectes sapidus)
   • Speckled Trout (Cynoscion nubulosis)
   • Smooth Cordgrass (Spartina alterniflora)
   • Wiregrass (Spartina patens)

Acres of Habitat To be Restored: Approximately 15 acres of marsh habitat

Project Summary:
Terraces will be constructed along the northern shoreline of Vermilion Bay using a combination of dredged in situ materials and HESCO baskets. The HESCO baskets are intended to provide a stronger frame for the terraces that could reduce wave driven erosion and loss of sediment. The terraces will conceptually be constructed with a 25-foot width; whereas, the length will be determined given the level of funding received. The terraces will likely flank the shoreline in an angled pattern in order to trap as much sediment entering the bay as possible. The landowner intends to add to the terraces over time as additional funding becomes available. Once the sediments are consolidated, they will be vegetated with Spartina sp. during a series of volunteer planting events. Post construction, the landowner will conduct monitoring to potentially include planting survival, reduction in adjacent shoreline erosion, and sediment trapping capacity of the terraces.

Project Objectives:
The objective of this project is to increase sediment deposition, reduce the rate of shoreline erosion, reestablish emergent marsh and protect existing emergent marsh located along the northern shore of Vermilion Bay, Louisiana. Louisiana loses an estimated 25-35 square miles of wetland habitat every year. With the passing of last year’s hurricanes, over 100 square miles of wetland were lost within a three week period. This project will restore approximately 10 acres of intertidal marsh which will serve as both restored habitat for marine fisheries as well as help protect adjacent shorelines from erosion.

Community Involvement:
The terraces will be planted by local volunteers in the community, including: McIlhenny Corporation, LSU Ag Extension Service, Boy Scouts, and middle school students in the Parish. McIlhenny Corporation is the producer of Tabasco and is the landowner of Avery Island, a large tourist attraction in south Louisiana. Their visitor center is visited year round and will contain posters and information about the project and Community-based Program.

PROJECT PHOTOS
Click on photo to enlarge

Terraces upon placement - click to enlarge
Terraces upon placement

Sunken terraces - click to enlarge
Terraces after sinking

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PROJECT PARTNERS

NOAA Restoration Center

Gulf of Mexico Foundation

McIlhenny Corporation

LSU Ag Extension Service

NOAA National Marine Fisheries Service

Natural Resources Conservation Service

Gulf of Mexico Foundation - PMB 51, 5403 Everhart - Corpus Christi, TX 78411
(800) 884-4175 toll free - (361) 882-3939 phone - (361) 882-1262 fax
e-mail: info@gulfmex.org     website: gulfmex.org
webmaster: Carrie Robertson