Flood, fire, earthquake, pollution and noise maps for any US address

Hazmaps is a free website that puts a plethora of publicly available US hazard data all in one place. Toggle layers, search an address, and click anywhere on the map to see the data for that spot.

What the map shows

Flood — nationwide
Nine layers from FEMA’s National Flood Hazard Layer, drawn in FEMA’s own cartography: flood hazard zones (AE / A / VE / X), base flood elevations, FIRM panels, cross-sections, levees, Letters of Map Revision, NFHL availability, water areas and political jurisdictions.
Transportation noise — nationwide
The US DOT Bureau of Transportation Statistics National Transportation Noise Map (2022): modelled 24-hour average sound level on a 30-metre grid across the lower 48, Alaska and Hawaii. Switch between aviation, road, rail, aviation + road, or all modes combined, and click to read the decibel band at a point.
Wildfire — California
CAL FIRE / Office of the State Fire Marshal Fire Hazard Severity Zones (Moderate, High, Very High), shown statewide as one layer built from the two maps CAL FIRE publishes separately by jurisdiction — State Responsibility Area, effective 1 April 2024, and Local Responsibility Area, adopted 24 March 2025.
Earthquake — California
Five California Geological Survey layers: Alquist-Priolo fault traces and the earthquake fault zones around them, plus liquefaction, landslide and unevaluated seismic hazard zones.
Pollution burden — California
OEHHA’s CalEnviroScreen 4.0, by census tract, with a per-tract card showing the individual pollution and population indicators behind the score.

How to use it

Type an address or place name in the search box, or let the map open near you. Turn layers on and off in the panel on the left — less common layers are under “More Layers.” Click the map to identify every visible feature under the cursor, with its attributes. Sharing the URL shares the map view and hazard data for that spot.

Where the data comes from

Every layer is derived from publicly available sources: FEMA, the US DOT Bureau of Transportation Statistics, CAL FIRE and the Office of the State Fire Marshal, the California Geological Survey, and OEHHA. The basemap is OpenStreetMap data rendered through Protomaps. Hazmaps redraws these sources for legibility and puts them in one place; it does not model, score or adjust them, and it adds no risk predictions of its own.

What this is not

Hazmaps is not an official hazard determination, and nothing here should be relied on for a property transaction, an insurance decision or a permit. Agency maps are revised occasionally, and the snapshots on Hazmaps can be out of date. For current official data, go to the source: