California property hazard guides
Short, plain guides to the government hazard maps behind Outpost: what each map means, what it can mean for a property, what it leaves out, and how to check any California location on the free map.
- California Fire Hazard Severity Zones
What CAL FIRE’s Moderate, High and Very High fire hazard severity zones mean, SRA vs LRA, and how to check any California location for free.
- FEMA flood zones in California
What FEMA flood zones A, AE, V, X and D mean, when flood insurance is usually required, and how to check a California location for free.
- Earthquake fault zones and liquefaction zones in California
What Alquist-Priolo Earthquake Fault Zones and liquefaction zones are, what they require before building, and how to check a California location.
- Landslide susceptibility in California
What the California Geological Survey’s deep-seated landslide susceptibility map shows, what it leaves out, and how to view it for any location.
- Wetlands and critical habitat in California
What National Wetlands Inventory and critical habitat maps show, why they matter before you build or buy in California, and what they can’t tell you.
- California groundwater basins and SGMA priority
What DWR’s SGMA basin priorities and critically overdrafted basins mean for wells and land in California, and how to see which basin a location is in.
- Contaminated and cleanup sites near California properties
How to find EPA Superfund, DTSC EnviroStor and leaking underground tank sites near a California property, what a listing means, and what it doesn’t.
More about the data
Every hazard and terrain value on Outpost comes from a government source. The data sources page lists each dataset and its agency, and the FAQ answers common questions about the map.