The entire city of Palo Alto is in a flood zone of one kind or another. But most of the city is in an "X" zone, which the Federal Emergency Management Agency (FEMA) describes as an area either lying outside the so called 100 year flood limit and inside the 500 year flood limit, or as lying within the 100 year flood limit but shallow enough to not represent a special hazard. The remainder of the city lies within Special Flood Hazard Areas (SFHA), which, roughly speaking, means the area of special hazard from a socalled "100 year flood". Find out which floodzone your residence is in by using the floodzone lookup.
