Island Road Marsh Creation and Nourishment (TE-117)

• Client

  Coastal Protection and Restoration Authority

• Division

  Survey & Mapping, Engineering

• Scope

  Bathymetric and Magnetometer Surveys, Sub-Bottom Profiles, High-Resolution Multi-Sensor Marine

• Completion

  2018

TE-117 will create and nourish approximately 365 acres and 19 acres of marsh, respectively. Marsh fill areas will be delineated and earthen containment dike (ECDs) will be constructed by the mechanical dredging of in situ material. A borrow area will be established in the permitted borrow area and fill material will be excavated by hydraulic dredging methods. Fill material will be liquefied into dredged slurry that will then be conveyed to the fill site via a sediment discharge to be laid in a permitted corridor.

Fenstermaker’s Survey Team is currently performing bathymetric, seismic, magnetometer, and side-scan sonar surveys in the potential borrow site location and in the conveyance corridor from the borrow area to the marsh creation area. Fenstermaker is also obtaining necessary geological and geophysical data for suitable dredge and equipment access corridors. Our Survey Team is also performing high resolution multi-sensor marine hydrographic/geophysical survey program in the proposed borrow area and in the conveyance corridor.

Fenstermaker is also performing a hydrodynamic study of the borrow area to ensure that the project will not cause adverse affects to the marshes surrounding the borrow area