Beginning with just one meter of sea level rise, the United States would be physically under siege, with calamitous and destabilizing consequences.

The U.S. is a coastal nation with over 12,000 miles of coastline. With 53% of all Americans living in and around coastal cities and towns, it is important to understand the impact of climate-induced sea level rise on our nation. Previous studies have focused on a six-meter rise. The following study takes a more conservative approach, beginning with a sea level rise of just one meter.


Miami Beach, FL

1-meter sea level rise; Population: 87,933
Data Source: LIDAR IHRCS
Maps are based on LIDAR data, USGS 10m NED.
Maps are illustrative; areas in blue depict various potential inundation scenarios.
Map accuracy is dependent on the accuracy of the geospatial data.
Explore the maps for a range of locations by using the navigation on the right, or download the study or study summary below.

Download the Coast Impact Study

Download Summary


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