Google Maps now has a thing to show you were the new coast would be for any given rise in sea level. I went and put in the maximum possible rise if all of Antarctica melted (200 feet) and it shows us losing:
- all of Delaware and half of Maryland
- about half of the Carolinas
- and in general, a stripe of about that same depth up and down the whole east coast, from Newfoundland to Nicaragua
- all of Florida except a couple bumps on the south shore of Georgia
- three quarters or four fifths of Louisiana
- a vast area of the Amazon basin, reaching almost to the border of Brazil and Colombia
- a big area around Buenos Aires, reaching all the way in to Paraguay
- most of southern Chile except the mountains
- California's central valley
- Portland
- a large area of western and northern Alaska
- a lot of the northern islandy parts of both Canada and Russia
- about half of Korea
- a huge area in the eastern urbanized part of China, with water reaching as much as 600 miles inland
- large chunks of Indonesia, Vietnam, Thailand, Myanmar, and especially Cambodia (less than half left)
- relatively little of Australia, mostly just a thin coastal strip... which happens to be where almost the entire population is
- all of Bangladesh
- a big bite out of southern Pakistan and neighboring bits of India
- about a third of Iraq
- a big area north of the Caspian Sea (which will probably be connected to the Mediterranean)
- there's a chunk of coastal mountains in Egypt and Libya which looks like it will become an island
- most of Senegal and all of Gambia, though the rest of the African coast gets off lightly
- Tunisia (a big bay will protrude inland there)
- more than half of England (with far less damage to Scotland, Wales, and Ireland)
- a wide strip of southwestern France
- about half of Belgium
- all of the Netherlands
- almost all of Denmark
- all of Germany north of Hanover (at least a quarter)
- a big chunk of Sweden centered on Stockholm
- about half of Estonia, and substantial chunks of the other Baltic countries
- St. Petersburg and a big patch around it as far inland as Novgorod
- and of course, all cities directly on the coast.