First Street Foundation releases new data disclosing flood risk of every home in the contiguous U.S
N. B.: According to the Association of State Flood Plain Managers (ASFPM), the First Street Foundation Flood risk data is based upon a nationwide 30-meter or 98 ft. 5 in. Contour Digital Elevation Model (DEM), rather than the finer 6.1 meter or 20 ft. Contour elevation data provided by USGS 7.5 minute Quadrangle Topographic Maps.
Flood Mapping Products [Federal Emergency Management Agency (FEMA)]
https://www.fema.gov/flood-mapping-products
Flood Maps [Federal Emergency Management Agency (FEMA)]
https://www.fema.gov/flood-maps
By Bart Everson – https://www.flickr.com/photos/editor/44195887422/, CC BY 2.0, Link
C. Mei-Ling HAMILTON - Environmental Geochemistry Issues 