Where can I find flood maps?
FEMA is the official public source for flood maps for insurance purposes:
- FEMA’s Flood Map Service Center
- FEMA’s Flood Hazard Map FAQs
NOAA is responsible for producing flood forecast maps that combine precipitation data with USGS streamflow data:
- National Flood Forecasts
- Interactive Flood Information Map
- Coastal Inundation Dashboard: Real-time and historical coastal flooding information
USGS flood map products include:
- USGS Flood Information: Maps and resources for current and historical floods
- Flood Inundation Mapper: Shows where river flooding might occur over a range of water levels. Only available for a few areas.
- Flood Event Viewer: Data collected during short-term flood events like hurricanes and multi-state storms. Includes rapid-deployment gages, temporary sensors, and high-water marks.
- Coastal Change Hazards Portal: Extreme storms, shoreline change, and sea-level rise.
Related Content
What is a 1,000-year flood?
Does an increase in the 100-year flood estimate originate from climate or land-use change?
We had a "100-year flood" two years in a row. How can that be?
How are floods predicted?
What are the two types of floods?
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Flood inundation mapping - Interactive floodplain mapping tool.
The USGS Flood Inundation Mapper
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Floods are the leading cause of natural-disaster losses in the United States. Although the amount of fatalities has declined due to improved early warning systems, economic losses have continued to rise with increased urbanization in flood-hazard areas. The USGS
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Flood Inundation Mapper
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...Flood Sign in Tualatin River, OR
Peak flood height of 1996 flood, as observed in the Tualatin River, OR.