Local Hazard Mitigation Plan

The Local Hazard Mitigation Plan is a multi-jurisdictional plan resource document that serves many purposes such as enhancing public awareness, creating a decision tool for management, promoting compliance with State and Federal program requirements, and more. View

More Info about the National Flood Insurance Program

Minimize Flood Damage

Learn the causes of flooding in San Mateo County, how to be prepared for a flood, and how to minimize flood damage. Learn the causes of flooding in San Mateo County, how to be prepared for a flood, and how to mitigate flood damage.


FEMA's Flood Zone Maps

See FEMA's Flood Insurance Rate Map (FIRM) to find out if your property is located within a Special Flood Hazard Area or floodway; to find your property's Flood Insurance Rate Map (FIRM) Zone; or the base flood elevation for your property.... View more

Flood Elevation Certificate

Applicants in all FEMA designated flood zones, with the exception of Moderate to Low Risk Areas designated Zone X, are required to demonstrate compliance with standards for development within these zones. This includes certification that all habitable areas of the project are at least one foot above the base flood elevation, limiting the use of all areas below this elevation to utility purposes constructed with breakaway walls, and installing flood vents within the foundation.... View more

National Flood Insurance Program

The NFIP makes available federally backed flood insurance for all structures, whether or not they are located within the floodplain.... View more

Flood Warning and Safety

Be prepared for flooding by signing up for San Mateo County's Alert System, knowing where to pick up free sandbags, and familiarizing yourself with safety tips.... View more