In the late 1990s through the mid-2000s, FEMA made a significant effort to convert paper maps into a digital format to increase their usefulness in flood risk analyses and associated flood risk mitigation efforts. In recent years, as part of the initiation of the Risk Mapping, Assessment, and Planning (Risk MAP) program, FEMA is investigating entire watersheds instead of individual counties because this made the most sense scientifically. Floods do not stop at political boundaries.
Although new maps may have been issued recently, much of the underlying study information in coastal areas across the U.S. has not been updated for decades. In recent years, FEMA has initiated studies along the entire populated U.S. coastline because of the significant and sometimes dangerous flood risks along the coast. Where possible, FEMA has combined these studies, but in some cases, studies have overlapped. FEMA requests your patience and support as we seek to better understand this country's coastal flood risks, and equip communities and families with appropriate information so they may protect themselves from catastrophic loss.