MIAMI (CBSMiami) – There is a growing concern about rising sea levels and the impact that could halve on home values in Florida in the future.

A new study from GOBankingRates.com uncovered 18 cities in Florida, 13 of which are in South Florida, that are at particular risk of having homes under water by year 2100.

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Miami Beach tops the list.

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Miami, Fort Lauderdale and Hollywood are all in the top 10.

The study found, for example, that erosion and rising tides would put some 77% of the existing homes in Miami Beach under water.

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Marathon and Key West were a couple of the other South Florida cities to make the list.