COASTAL WETLANDS PLANNING, PROTECTION AND RESTORATION ACT

PROJECT STATUS REPORT as of 21-Jan-2022

Island Road Marsh Creation & Nourishment

PROJECT DATA

PROJECT: Island Road Marsh Creation & Nourishment
PRIORITY LIST: 23 PROJECT NO: CWPPRA NO: TE-117 DNR NO: TE-117
PROJECT TYPE: Marsh Creation NET ACRES BENEFITTED: 206
REGION: 0 BASIN: Terrebonne PARISH: Terrebonne
LEAD AGENCY: NMFS
LOCAL SPONSOR: DEPT. OF NATURAL RESOURCES, STATE OF LA

MILESTONES:

CSA EXECUTION: 7/1/2014 12:00:00 AM *    
DESIGN COMPLETION:    
CONSTRUCTION START:    
CONSTRUCTION COMPLETION:    
ESCROW AMENDMENT No:
MONITORING PLAN APPROVAL:    
O and M PLAN APPROVAL:    
DEAUTHORIZATION DATE:      
CASH FLOW PROECTS:        
Phase 1 Approval: 16-Jan-2014 ( Actual )    
Phase 2 Approval:    

LEGISLATIVE DISTRICTS:

CONGRESSIONAL DISTRICT: 1 Steve Scalise
STATE SENATE DISTRICT:
STATE HOUSE DISTRICT:

Point of Contact:

DEPT. OF COMMERCE
NATIONAL MARINE FISHERIES SERVICE

Kimberly Clements



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PHONES:  
Office:
Fax:

COASTAL WETLANDS PLANNING, PROTECTION AND RESTORATION ACT

PROJECT STATUS REPORT as of 21-Jan-2022

Island Road Marsh Creation & Nourishment

PROJECT LOCATION:

The project is located in Region 3, Terrebonne Basin, Terrebonne Parish, southeast of Montegut and east of Isle de Jean Charles.

PROJECT DESCRIPTION:

The project site contains organic and highly compressible soils with expansive open water areas. Subsidence, wind erosion, storms, and canals and pipelines all have altered hydrology and contributed to widespread historic and continued rapid land loss within the project site and vicinity. The wetland loss rate is -1.46% per year based on USGS data from 1984 to 2020 for the extended project boundary. As interior marsh has converted to open water leaving marsh along relic distributary channels, there is more exposure risk to increased wave fetch and tidal and surge flooding reducing wetland habitat and resiliency of communities in the southeast portion of the Parish. The project features consist of restoring marsh adjacent to both the Twin Pipelines and parallel to Isle de Jean Charles. General project goals are to rebuild structural framework of degraded marsh along the Twin Pipelines corridor via marsh creation and nourishment to create habitat and decrease the vulnerability of coastal communities and infrastructure. Specific goals are to create 229 acres of marsh, nourish 66 acres of existing marsh and result in approximately 206 net marsh acres after 20 years. Sediment would be mined from Lake Tambour and pumped into three confined disposal cells. Dikes would be gapped prior to demobilization for dewatering and additionally no later than three years after construction for tidal function.

PROJECT STATUS: (Project Status Last Updated: )

FUND STATUS:

The current project estimate is $3,721,447 , which includes $3,721,447 for construction first costs, and $0 and $0 for 20 years of monitoring and operations and maintenance, respectively.

LaCoast.gov Project Managers' Technical Factsheet