America's Most Vulnerable Places: New York City
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Bea has called for floodgates to regulate water levels at key sites along the East River and the Narrows tidal strait, where the Atlantic flows into Manhattan. He also recommends high-grade metal barriers – essentially mini-dams – to contain flooding on city streets and the subway. The cost for the floodgates is estimated at $17 billion, but, says Bea, "the greatest threat to New York is to not mobilize."