Sinking Cities: Rising Flood Risks and the Impact of Subsidence

Multiple US cities on the east coast are sinking, increasing the risk of flooding from rising sea levels.

Between 2007 and 2020, the ground under New York, Baltimore, and Norfolk in Virginia sank between 1mm and 2mm a year. Other places sank at double or triple that rate, and Charleston, South Carolina, sank fastest, at 4mm a year, in a city less than 3 metres above sea level.

The subsidence resulted from pumping out groundwater for water supplies or for natural gas, but New York and other cities are sinking under the sheer weight of their buildings pressing into soft ground. Read More

News Credit: The Guardian

Picture Credit: Ed Jones/AFP/Getty Images

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