San Mateo County Flood and Sea Level Rise Resilience Program

San Mateo County Flood and Sea Level Rise Resilience Program
Name	San Mateo County Flood and Sea Level Rise Resilience Program
Location	San Mateo County, California
Established	2018
Agency	San Mateo County Flood and Sea Level Rise Resilience Program

San Mateo County Flood and Sea Level Rise Resilience Program The San Mateo County Flood and Sea Level Rise Resilience Program is a regional initiative addressing coastal flooding, tidal inundation, and watershed flood risks across San Mateo County, California, coordinating planning, engineering, environmental restoration, and community resilience. The program integrates hazard assessment, capital projects, regional partnerships, and policy tools to reduce vulnerability of infrastructure, ecosystems, and communities along the San Francisco Bay shoreline and Pacific coast.

Overview

The program operates within San Mateo County, collaborating with the San Mateo County Board of Supervisors, City of Pacifica, City of Redwood City, City of Menlo Park, and City of Daly City while coordinating with regional entities such as the Association of Bay Area Governments, Metropolitan Transportation Commission, Bay Area Regional Collaborative, San Francisco Bay Conservation and Development Commission, and California Coastal Commission. It synthesizes technical guidance from agencies and institutions including the National Oceanic and Atmospheric Administration, United States Geological Survey, California Governor's Office of Emergency Services, California Natural Resources Agency, and academic partners like Stanford University, San Francisco State University, University of California, Berkeley, and San Jose State University. The program interfaces with infrastructure stakeholders including Caltrans, Port of Redwood City, Caltrain, San Francisco International Airport, and regional water agencies such as the San Mateo Countywide Water Pollution Prevention Program and South San Francisco Public Utilities Commission.

History and Development

Origins trace to post-2012 and post-2017 coastal vulnerability studies led by local planning departments, influenced by statewide policy shifts under Senate Bill 1 (2017), Senate Bill 379 (2015), and guidance from the California Coastal Commission and California Fourth Climate Change Assessment. Early partnerships formed with the Bay Area Flood Protection Task Force and funding sources from the California Department of Water Resources and Federal Emergency Management Agency. Major milestones include countywide vulnerability assessments modeled on datasets from the United States Climate Change Science Program, regional sea-level-rise projections aligned with California Ocean Protection Council guidance, and coordinated resilience planning following impacts observed during storms that affected Highway 1 (California), U.S. Route 101, and local transit operations on Caltrain (California). Legal and policy contexts engaged statutes and plans such as the California Coastal Act and regional planning frameworks driven by the Metropolitan Transportation Commission.

Objectives and Components

Primary objectives encompass reducing flood risk to transportation corridors including U.S. Route 101 (California), Interstate 280, and State Route 92 (California), protecting critical facilities such as San Francisco International Airport, Stanford Research Park, and water treatment plants, conserving and restoring habitats like South San Francisco Bay Salt Ponds and Bair Island, and ensuring equitable outcomes for vulnerable communities including neighborhoods in East Palo Alto, North Fair Oaks, and Colma. Core components include hazard assessment using scenarios from the National Research Council (U.S.), adaptation planning consistent with California Natural Resources Agency guidance, nature-based solutions referencing projects like the South Bay Salt Pond Restoration Project, hard infrastructure options influenced by U.S. Army Corps of Engineers practice, and policy tools such as local coastal programs and capital improvement planning used by counties across California.

Governance and Funding

Governance relies on a multi-agency steering structure that brings together the San Mateo County Board of Supervisors, county planning staff, city managers from jurisdictions including Brisbane, California, Hillsborough, California, and Menlo Park, California, and representatives from special districts like the South Bayside System Authority and Westborough Sanitary District. Funding streams have combined county general funds, grant awards from the California Department of Water Resources, hazard mitigation grants from the Federal Emergency Management Agency, and regional funds administered through the Metropolitan Transportation Commission and Association of Bay Area Governments resilience programs. The program has pursued public financing mechanisms similar to measures approved in other jurisdictions, coordinated bond programs modeled on municipal finance precedents, and philanthropic support aligned with initiatives by organizations such as the Gordon and Betty Moore Foundation and the Silicon Valley Community Foundation.

Projects and Implementation

Implemented projects span levee improvements, tidal marsh restoration, and floodplain reconnection at sites including the Oyster Point, Estos Marsh, and portions of the Pescadero Creek watershed, and planning for transportation protections along U.S. Route 101 (California) and local arterials. Pilot efforts include living shoreline demonstrations informed by work at Crissy Field, wetland enhancement projects modeled on the South Bay Salt Pond Restoration Project, and conveyance upgrades consistent with standards from the American Society of Civil Engineers. Engineering partners have included private firms, academic research centers, and federal agencies such as the United States Army Corps of Engineers and National Oceanic and Atmospheric Administration. Project sequencing emphasizes risk reduction for critical infrastructure like Caltrain (California) right-of-way, San Mateo County Event Center, and wastewater treatment plants while advancing habitat goals for species listed under the California Endangered Species Act and those tracked by the United States Fish and Wildlife Service.

Community Engagement and Equity

Community engagement strategies coordinate with community-based organizations, neighborhood associations, and equity-focused groups operating in areas such as East Palo Alto, Redwood City and North Fair Oaks, partnering with entities like the San Mateo County Human Services Agency, El Concilio of San Mateo County, and regional equity initiatives from the Association of Bay Area Governments. Outreach includes multilingual public meetings, stakeholder advisory committees, and participatory planning approaches modeled on practices from the National Flood Insurance Program outreach efforts and state-funded community resilience pilots. Equity considerations prioritize frontline communities identified in regional maps produced by the CalEnviroScreen framework and aim to prevent displacement pressures observed in other resilience projects in the San Francisco Bay Area by coordinating with affordable housing agencies and transit equity programs run by SamTrans and Caltrain (California).

Monitoring, Evaluation, and Future Planning

Monitoring and evaluation employ performance metrics tied to hazard reduction, ecological function, and social outcomes, leveraging data from the United States Geological Survey, National Oceanic and Atmospheric Administration, California Air Resources Board, and local monitoring programs developed with partners such as San Francisco Estuary Institute and Point Blue Conservation Science. Adaptive management pathways reflect scenario planning used by the California Natural Resources Agency and the Metropolitan Transportation Commission resilience frameworks, and the program updates planning guidance in response to revised sea-level-rise projections from the Intergovernmental Panel on Climate Change and state technical advisories. Long-term planning explores coordinated regional solutions with neighboring counties including Santa Clara County, California, Alameda County, California, and Marin County, California to achieve integrated shoreline management across the San Francisco Bay.

Category:San Mateo County, California Category:Climate change adaptation programs