The Naval Postgraduate School & The U.S. Department of Homeland Security

Sea Level Rise Poses Threat to US Coastal Areas

coastal flooding Climate Central offers a number of reports and online tools on the website http://sealevel.climatecentral.org/. "Global warming has raised global sea level about 8 inches since 1880, and the rate of rise is accelerating. Rising seas dramatically increase the odds of damaging floods from storm surges. A Climate Central analysis finds the odds of 'century' or worse floods occurring by 2030 are on track to double or more, over widespread areas of the U.S. These increases threaten an enormous amount of damage. Across the country, nearly 5 million people live in 2.6 million homes at less than 4 feet above high tide — a level lower than the century flood line for most locations analyzed. And compounding this risk, scientists expect roughly 2 to 7 more feet of sea level rise this century — a lot depending upon how much more heat-trapping pollution humanity puts into the sky." The report Surging Seas: Sea Level Rise, Storms & Global Warming's Threat to the US Coast details the land and population at risk. The website also offers an interactive map "of areas below different amounts of sea level rise and flooding, down to neighborhood scale, matched with area timelines of risk. The tool also provides statistics of population, homes and land affected by city, county and state, plus links to factsheets, data downloads, action plans, embeddable widgets, and more."