FloodRisk
About FloodRisk
About FloodRisk: who we are, why this site exists, and how we attribute to PerilScore.
FloodRisk is part of the PerilScore network of peril-specific risk-intelligence sites.
Why this site exists
Most public flood data is published at the county or state level, or as FEMA’s discrete-boundary flood zones. FloodRisk publishes flood risk scores at neighborhood resolution, about 5 km² sample points, so anyone searching for the risk at a specific location can find authoritative numbers, including for properties outside FEMA’s regulatory boundaries.
The scores on this site come from the same data layer used by insurance and risk management professionals. We publish them here because location-specific risk information shouldn’t require a paid product subscription to find.
Who builds and maintains this site
FloodRisk is built and maintained by PerilScore, a property and peril risk-intelligence company. PerilScore operates the broader risk-modeling platform and the peril-specific sites in this network.
How to use it
- For neighborhood-level risk research, browse the location pages.
- For data sources, the modeling approach, and limitations, see the methodology page.
- For a property-specific risk score that incorporates first-floor elevation, foundation type, and flood-vent compliance, use the free PerilScore app.
Attribution & Contact
Risk scores powered by PerilScore. Visit perilscore.com for the full platform, API access, and commercial-use licensing. For questions about this site or the data, contact us through perilscore.com.
Methodology
Public data. Real science. No black boxes.
Every score is computed from decades of public weather records using physics-based probability modeling. It's the same approach used by insurance and risk management professionals.
- Decades of public weather data
Hurricane tracks, storm intensities, fire perimeters, hail reports, all drawn from public scientific archives. We don't use proprietary data. You can audit every input.
- Physics-based probability modeling
Scores reflect how the actual peril behaves: wind fields, fire spread, ground shaking, and storm tracks. The model keeps the physics visible instead of flattening every place into a broad average.
- Used by professionals
The same PerilScore data layer is used by insurance and risk management professionals. We publish it here so anyone can find authoritative risk numbers for their location.
Frequently asked questions
Where does the flood risk score come from?
How is this different from a FEMA flood zone?
Does this cover pluvial (rainfall) flooding?
Want the full picture for a specific property?
The scores on this site show the representative flood layer for a local area. Enter a street address to add building age, construction type, roof details, occupancy, surroundings, and property-level context.
Free results for any US street address.