Lower Walnut Creek Restoration Project
Lower Walnut Creek, 3 miles east of the City of Martinez, Contra Costa County, East Bay Region
Vital Fish, Bird and Wildlife Habitat Program; Integrated Flood Protection Program; and Shoreline Public Access Program.
This project will construct two critical components of the wider Lower Walnut Creek Restoration Project: the North and South reaches. It will restore and enhance brackish tidal wetlands and adjacent uplands along the southern shore of Suisun Bay, Walnut Creek and Pacheco Creek in Contra Costa County.
The project will improve habitat quality, diversity, and connectivity along 3.2 miles of creek channel (up to 279 acres). Public trails and associated amenities will offer visitors opportunities for wildlife-compatible recreation, environmental educational and broad vistas of the project area, Suisun Bay and Mount Diablo.
In the South reach, the restoration will be accomplished by breaching and lowering levees to reintroduce the tides to diked former baylands, excavating tidal channels, and constructing a new setback levee for flood protection. The sides of the setback levee will be gently sloped to support a wide marsh to upland transition.
In the North Reach, restoration will be accomplished by breaching and lowering berms, excavating to create new tidal wetlands and channels, and grading existing upland areas to create a diverse landscape of lowland terrestrial habitats, including seasonal wetlands, and uplands integrated with the tidal wetlands.