Coastlines are some of the most populated and rapidly expanding areas of the United States. Here, people seek employment, build residences and facilitate urban growth. However, most people do not fully realize all of the risks associated with living along a coast. Relative sea-level rise, erosion, and severe storms continuously alter the landscape. Anthropogenic interventions designed to slow these natural processes often foster decline at a greater rate. Building residences and other permanent structures further exacerbates the problem.