To support conceptual design development, WSP USA performed baseline studies including habitat mapping, wetland delineations, biological benchmark assessment, salinity screenings, reference marsh assessment, fishery resources identification, threatened and endangered species surveys, floristic quality assessments, topographic and bathymetric surveys, and hydrologic, hydraulic and hydrodynamic modeling.
Our resulting design solution involves marsh restoration through inlet modification and construction of an earthen flood control berm. Four 48-inch water control structures with check valves and a single 72-inch water control structure with flap gates will be installed within the berm to drain stormwater runoff from the upper watershed while preventing tidal backflow. WSP obtained local, state and federal permits and will provide full time construction management services.