Red shows areas along the Gulf Coast and East Coast of the United States that would be flooded by a 10-meter rise in sea level. Population figures for 1996 (from the U.S. Bureau of the Census, unpublished data, 1998) indicate that a 10-meter rise in sea level would affect approximately 25 percent of the Nation's population. (Adapted from: USGS Potential Sea Level Changes web page at U.S. Geological Services)