Lower Walnut Creek Restoration Project

3 Documents in Project


SCH Number
Lead Agency
Contra Costa County
Document Title
Lower Walnut Creek Restoration Project
Document Type
NOD - Notice of Determination
Project Applicant
Contra Costa County Flood Control and Water Conservation District

Document Description
The purpose of this project is to restore and enhance wetlands and associated habitats in Lower Walnut Creek and provide sustainable flood management, while allowing opportunities for public access and recreation. The proposed project would restore and enhance coastal wetlands and adjacent habitats along the southern shoreline of Suisun Bay and from the mouth of Walnut Creek at Suisun Bay upstream along Walnut Creek and Pacheco Creek, improving habitat quality, diversity, and connectivity along four miles of creek channel, over approximately 386 acres in total. Key project elements include: • Restoration and enhancement of tidal and seasonal wetlands, lowland grasslands, and upland grasslands and scrub in all reaches through invasive plant species control, excavation and grading, and revegetation in all reaches • Creation of new setback levees in the South and Middle reaches to provide sustainable flood protection • Creation of new public access opportunities including trails and boardwalks, recreational water access points, and an interpretive center in the North Reach • Opportunities for the future extension of the Iron Horse Trail in the South Reach • Protection of existing water !d wastewater infrastructure in the South and North Reaches and landfill infrastructure in the Middle Reach.

Contact Information
Ave' Brown
CCC Department of Conservation and Development
255 Glacier Drive
Martinez, CA 94553

Phone : (925) 313-2311


Contra Costa
Other Location Info
The proposed project site is located in unincorporated Contra Costa County approximately 3 miles east of the City of Martinez, along the lower 2.5 miles of Walnut Creek and 1.5 miles of Pacheco Creek in Central Contra Costa County.

Notice of Determination

Approving Agency
Contra Costa County
Approving Agency Role
Lead Agency
Approved On
Final Environmental Document Available at
Contra Costa County Public Works Department 255 Glacier Drive, Martinez, CA 94553


(1) The project will have a significant impact on the environment
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
(3) Mitigated measures were made a condition of the approval of the project
(4) A mitigation reporting or monitoring plan was adopted for this project
(5) A Statement of Overriding Considerations was adopted for this project
(6) Findings were made pursuant to the provisions of CEQA


Notice of Determination
NOD LWC SCH#2019099043   PDF 1197 K

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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