What Could Disappear
UPDATED November 24, 2012
Maps show coastal and low-lying areas that would be permanently flooded, without engineered protection, in three levels of higher seas. Percentages are the portion of dry, habitable land within the city limits of places listed that would be permanently submerged.
- Today’s waterways
- Land submerged by rising oceans
Flooding extends over much of downtown and many waterfront communities, like Dundalk.
The downtown island shrinks to mostly Beacon Hill. Many shore communities are flooded.
The coast moves up to 10 miles inland. The old city is submerged.
The Space Center and the vast industrial zone along the Houston Ship Channel are inundated; the sea moves inland as much as 15 miles.
Most of the built-up areas in the city are submerged.
Los Angeles area
In much of Long Beach and Huntington Beach, the Pacific moves up to four miles inland.
All barrier islands gone. The southern shore has moved one to five miles inland in most places.
The entire metropolitan area is permanently flooded.
Downtown is inundated. Mobile Bay is several miles wider.
Downtown Newark, downtown Jersey City, Atlantic City, most of the state’s coastal towns and the Cape May peninsula are all gone.
The gulf shore advances to Interstate 12.
New York City
Large portions of all five boroughs are gone, including much of Manhattan below 34th Street.
Nearly two-thirds of Sacramento, including downtown, is inundated.
Much of the historic district and South Philadelphia are submerged, as is the vast refinery complex along the Schuylkill. The Delaware swells to five miles wide.
Water encroaches on parts of the downtown district and much of South Portland.
The Columbia shaves two miles off the north side of Portland.
A larger section of the downtown area is under water.
Coronado Island is mostly gone.
Most of the region is under water, with only small sections of Savannah spared.
Much of the large suburb of Kent is flooded.
Tampa Bay area
Downtown Tampa, Tampa International Airport and Tarpon Springs are swamped. Parts of Clearwater survive on an island; St. Petersburg is reduced to a smaller island.
Most of the region is permanently submerged.
Much of central Washington below Constitution Avenue is inundated, as are National Airport and parts of Old Town Alexandria.
The Delaware is about 10 miles wide at New Castle.