NOAA, US Census report finds increases in coastal population growth by 2020 likely, putting more people at risk of extreme weather

NOAA: If current population trends continue, the already crowded U.S. coast will see population grow from 123 million people to nearly 134 million people by 2020, putting more of the population at increased risk from extreme coastal storms like Sandy and Isaac, which severely damaged infrastructure and property last year.

...According to the report, which analyzed data from the 2010 census, 39 percent of the U.S. population is concentrated in counties directly on the shoreline -- less than 10 percent of the total U.S. land area excluding Alaska, and that 52 percent of the total population lives in counties that drain to coastal watersheds, less than 20 percent of U.S. land area, excluding Alaska. A coastal watershed is an area in which water, sediments, and dissolved material drain to a common coastal outlet, like a bay or the ocean.

The National Coastal Population Report: Populations Trends from 1970 to 2020, issued in partnership with the U.S. Census Bureau, updates and expands a 2004 report that detailed and projected coastal population trends from 1980 to 2008.

“People who live near the shore, and managers of these coastal communities, should be aware of how this population growth may affect their coastal areas over time,” said Holly Bamford, Ph.D., assistant NOAA administrator for the National Ocean Service. “As more people move to the coast, county managers will see a dual challenge -- protecting a growing population from coastal hazards, as well as protecting coastal ecosystems from a growing population.”

This report offers coastal managers and other users, for the first time, two perspectives on population growth along the U.S. coast -- the traditional perspective that looks at status and trends throughout counties that drain to coastal watersheds, called Coastal Watershed Counties, and a newer focus that focuses only on those counties that directly border the coast, including the Great Lakes....

Infographic from NOAA