Flood Maps

 

FEMA is the official public source for flood maps for insurance purposes:

NOAA is responsible for producing flood forecast maps that combine precipitation data with USGS streamflow data:

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.