Corte Madera Ecological Reserve Tidal Marsh Restoration

Restoration design, regulatory permitting

Corte Madera Ecological Reserve Tidal Marsh Restoration

WRA worked with the Golden Gate Bridge, Highway and Transportation District (the District) to design and implement the restoration of more than four acres of tidal marsh and a quarter-acre of seasonal wetland adjacent to the Corte Madera Ecological Reserve in Marin County, California. The restored tidal marsh habitat provides habitat for Federally listed species, including California Ridgway’s rail (Rallus obsoletus obsoletus) and the salt marsh harvest mouse (Reithrodontomys raviventris), as well as fulfilling mitigation requirements for the District. The project includes new public amenities such as a new public trail segment adjacent to the restored tidal marsh, benches, signage, and interpretive panels. The project was designed to preserve low lying land, which will convert to tidal marsh as sea levels rise, keeping the habitat resilient.

WRA completed the CEQA documents, as well as prepared and submitted permit applications to the U.S. Fish and Wildlife Service, U.S. Army Corps of Engineers, Regional Water Quality Control Board, and San Francisco Bay Conservation and Development Commission. WRA also prepared the project construction documents and is the engineer of record for the new tidal channel and marsh plain system design.

WRA provided construction oversight and biological monitoring services throughout the duration of construction, from October 2020 to January 2021. The restored tidal marsh and seasonal wetland will be monitored for five years to ensure successful establishment of these important wetland habitats.

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