Seas Could Rise Up to 1.6 meters (5 feet) by 2100

And that would cause the sea to come in much farther inland.

http://www.scientificamerican.com/article.cfm?id=seas-could-rise-up-to-16-meter

May 3, 2011
By Alister Doyle

OSLO (Reuters) - Quickening climate change in the Arctic including a thaw of Greenland's ice could raise world sea levels by up to 1.6 meters by 2100, an international report showed on Tuesday.

Such a rise -- above most past scientific estimates -- would add to threats to coasts from Bangladesh to Florida, low-lying Pacific islands and cities from London to Shanghai. It would also, for instance, raise costs of building tsunami barriers in Japan.

"The past six years (until 2010) have been the warmest period ever recorded in the Arctic," according to the Oslo-based Arctic Monitoring and Assessment Programme (AMAP), which is backed by the eight-nation Arctic Council.

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