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NYC challenges new federal flood maps

People wade through flood water in Broad Channel

People wade through flood water in Broad Channel brought by superstorm Sandy on October 29, 2012 in Queens. Photo Credit: Getty Images / Allison Joyce

New York City is challenging new federal flood maps that call for doubling the number of properties covered.

"Climate change continues to be the challenge of our generation and conveying this risk accurately is paramount," de Blasio administration official Dan Zarrilli said in a letter.

If the de Blasio administration succeeds, thousands of homeowners' insurance rates would fail to go up.

According to an analysis by the city that forms the basis of his appeal, the Federal Emergency Management Agency overstated the elevation of the 100-year floodplain in New York City. The city faults the federal governments's statistical modeling.

If the city wins its appeal, about 26,000 buildings, and 170,000 people would be removed. The flood plain would be refunded by about 2.5 feet, which is based on a 100-year plan.

The city's paperwork was submitted by Friday. During the appeals process, the status will stay in effect.

Superstorm Sandy in 2012 ravaged large parts of the city and Long Island.


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