Bayfront Canal and Atherton Channel Flood Management and Restoration Project


SCH Number
Lead Agency
San Mateo County
Document Title
Bayfront Canal and Atherton Channel Flood Management and Restoration Project
Document Type
MND - Mitigated Negative Declaration
Project Applicant
County of San Mateo, Department of Public Works
Present Land Use
Zoning: Tidal Plain (TP); Flood Plain (FP); General Plan Designation: Open Space -- Preservation; Non-Urban Marsh

Document Description
The objective of the project is to provide adequate flood conveyance capacity and effectiveness during times of peak flood flow to protect residences and businesses in the communities south and southwest of the Bayfront Canal, reducing damage to property and potential risks to public health and safety. This Project is proposed as the first step to address existing chronic and widespread flooding of streets, residences, and businesses in the multi-jurisdictional watershed of Bayfront Canal. The Project involves the construction of two parallel underground box culverts and associated drainage connections to route a portion of peak flood flows from Bayfront Canal into managed ponds that are part of the Ravenswood Pond Complex portion of the South Bay Salt Pond (SBSP) Restoration Project.

Contact Information
Erika Powell
County of San Mateo Department of Public Works
555 County Center, 5th Floor
Redwood City, CA 94063-1665

Phone : (650) 599-1488


39°29'12.2"N 122°10'40.8"W
Menlo Park Redwood City
San Mateo
Cross Streets
Marsh Road and Bayfront Expressway
Total Acres
Parcel #
State Highways
Bayfront Canal and Atherton Channel

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (flood control Type)
Local Action
Flood control
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Forest Land/Fire Hazard Geologic/Seismic Greenhouse Gas Emissions Minerals Noise Population/Housing Balance Public Services Recreation/Parks Schools/Universities Septic System Sewer Capacity Soil Erosion/Compaction/Grading Solid Waste Toxic/Hazardous Traffic/Circulation Vegetation Water Quality Water Supply Wetland/Riparian Growth Inducing Land Use Cumulative Effects
Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Highway Patrol California Native American Heritage Commission California Public Utilities Commission California Regional Water Quality Control Board, San Francisco Bay Region 2 California State Lands Commission Department of Water Resources Resources Agency San Francisco Bay Conservation and Development Commission State Water Resources Control Board, Division of Water Quality California Department of Transportation, District 4


Environmental Document
Compiled Bayfront Canal Public Review Draft IS_MND with Appendices   PDF 38945 K IS_MND CH5 signature page   PDF 72 K Summary Form   PDF 367 K
NOC   PDF 1742 K
State Comments
2019079111_DT4_FW_ Caltrans Comments - Bayfront Canal and Atherton Channel Flood Management and Restoration Project - Mitigated Negative Declaration (MND) -   PDF 186 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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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