About Flood.global
Free flood risk tools for U.S. homes, built on public data from FEMA, the National Weather Service and the U.S. Census Bureau.
Flood.global puts the flood information for a U.S. address in one place: the FEMA flood zone on the current flood map, any flood watches or warnings in effect, and how nearby rivers compare with their flood stages. Plain-English guides explain what each result means and what to do before, during and after a flood.
Where the data comes from
- Flood zones come from FEMA's National Flood Hazard Layer, the digital version of the effective Flood Insurance Rate Maps, looked up live for your location each time you search.
- Address locations come from the U.S. Census Bureau Geocoder, which places an address along its street. Near the edge of a flood zone, that point can fall in a different zone than your building.
- Flood alerts come live from the National Weather Service (api.weather.gov). We show alert text exactly as issued and link to the official page.
- River gauges come from NOAA's National Water Prediction Service, including the flood stages the National Weather Service sets for each gauge.
- The map under each result uses The National Map base map from the U.S. Geological Survey, with FEMA's flood zones drawn on top.
Flood.global is independent and isn't affiliated with FEMA, the National Flood Insurance Program, NOAA, the National Weather Service, the USGS, the Census Bureau or any other government agency.
Not an official flood determination
A flood zone shown here is for information only. It isn't an official flood zone determination, and it can't be used for insurance rating, a lender's flood insurance requirement or a permit. For those, use FEMA's Flood Map Service Center, your community's floodplain manager, or a flood zone determination from your lender or insurance agent.
Use official sources for safety
For decisions about your safety, check weather.gov and follow instructions from local officials. If you are told to evacuate, go.
Images
The photos on this site come from Unsplash under the Unsplash License, credited by each photo: Richard R, Bernd Dittrich, Wes Warren, Wolfgang Hasselmann, Miles Smith and Chris Gallagher. The river gauge illustration was drawn for this site.
How the site is funded
Flood.global may show advertising and earn commissions from links to flood protection products in the future to cover its costs. Advertisers and partners don't influence the lookups or guides. We don't sell insurance. If you spot a problem, please tell us.