Marsh Creek watershed is the second largest watershed in Contra Costa County. It originates on the eastern slope of Mt. Diablo and flows 30 miles through the rapidly growing communities of Brentwood, Oakley, and Antioch in eastern Contra Costa County and into the Sacramento-San Joaquin Delta.
Marsh Creek is the second largest Watershedin Contra Costa County. Marsh Creek originates 2,000 feet up the eastern slopeof Mt. Diablo, approximately 35 miles east of San Francisco. It is one of thefastest urbanizing watersheds in California, and the creek flows for 30 milesthrough the rapidly growing communities of Brentwood, Oakley, and Antioch ineastern Contra Costa County and into the Sacramento-San Joaquin Delta. MarshCreek forms an important ecological link between the Delta and the Diablo Rangeand offers a vital natural refuge among multiplying subdivisions. Marsh Creekis also uniquely situated and provides significant spawning habitat near themouth of the productive Sacramento-San Joaquin River Delta, so is therefore apriority watershed for restoration of salmon habitat in the Bay-Delta System.
The Three Creeks Parkway Restoration Project is a multi-benefit flood control, creek restoration, and public access project. Construction was completed in January 2021 and involved widening the Marsh Creek channel along approximately 4,000 linear feet near downtown Brentwood and creating a floodplain bench. Planting of native vegetation took place from January through April 2021 and will continue until spring 2023. The project will provide quality habitat for Chinook Salmon and Swainson's Hawk and create a shady parkway, improving recreational and educational opportunities along the Marsh Creek Regional Trail and for residents around Contra Costa County. For more information, click here.
The Dutch Slough Wetland Restoration Project is an approximately1,200-acre freshwater wetland restoration project at the mouth of Marsh Creek. Themouth of Marsh Creek will be re-routed onto the Dutch Slough project site tobenefit native fish species. Construction of the wetland channels began on theEmerson and Gilbert parcels between 2018 and 2019 and restoration plantingbegan in 2019. For more information, click here. To watch the restoration video, click here.
The Friends of Marsh Creek Watershed (FOMCW) is a community organization whose mission is to protect, conserve, and restore Marsh Creek and its tributaries, and to inspire appreciation and conservation of the Marsh Creek Watershed.
American Rivers is a national nonprofit organization that protects wild rivers, restores damaged rivers and conserves clean water for people and nature. Staff from American Rivers has been working with the CCRCD, the Friends of Marsh Creek Watershed, the Contra Costa Flood Control District, and other partners to implement restoration projects and engage local community members on Marsh Creek since 1998.
The Mission of the Contra Costa Resource Conservation District is to Facilitate Conservation and Stewardship of the Natural Resources in Contra Costa County.