Sea levels along coastlines in the United States will rise about one foot by 2050, with larger increases on the East and Gulf coasts, according to a comprehensive new report by federal climate scientists.
A bike path near Sausalito, Calif. flooded in January during a high tide. Sea levels will rise between six and 18 inches in different parts of the U.S. over the next 30 years, according to a new report.
People living in coastal cities are already facing encroaching seas. Every extra inch of ocean water scours beaches and sea walls, exacerbates flooding during hurricanes and makes it more likely that salty water will undermine buildings, and infiltrate sewers, storm drains and drinking water reservoirs.
Sea level rise varies dramatically for different parts of the U.S. coast. The ocean is not like a bucket of water that rises uniformly as more liquid is added. Ocean currents push more water into some areas than others. Ice in different regions melts at different rates. In many parts of the world, sea level rise is worse because coastal land is sinking.
Sea level rise is happening more slowly on the West Coast, including much of southern and western Alaska, the report finds. The authors predict about six inches of sea level rise by 2050. Hawaii and island territories in the Caribbean will see a little more than half a foot of sea level rise.
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