Skip to main content
U.S. flag

An official website of the United States government

Map showing the amount of sea-level rise that will double the chances

Detailed Description

Map showing the amount of sea-level rise that will double the chances of today’s “50-year floods,” which have a 2 percent chance of happening in any year. Warmer colors indicate areas at greater risk. Along Africa’s equatorial coast, for example, flood risk will double with a sea-level rise of just 2 to 2.5 centimeters (3/4 to 1 inch; Figure 5 from the new paper at https://doi.org/10.1038/s41598-017-01362-7).