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Could Giant Rotterdam-Style Floodgates Protect Lower Manhattan From Flooding in Future Superstorms?

Posted By Beth Buczynski On November 18, 2012 @ 3:16 pm In Architecture,Manhattan,Weather | No Comments

new new amsterdam, floodgates, building sized floodgates, new york flooding, New York City, NYC, Manhattan, Bloomberg, urban planning, storm surges, Hurricane Sandy, Dutch, Amsterdam, flood gatesPhoto from “Weather of the Future [8]” by Heidi Cullen, one of the world’s foremost climatologists and environmental journalists. The book is about the types of extreme forecasts we might be able to expect in the near future if we don’t do more to reverse climate change. The book can be purchased here [8].

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Building a skyscraper-sized sea wall to protect lower Manhattan might sound a little far-fetched, but it’s a serious proposal coming from the former director of the Department of City Planning’s Manhattan office. “The thing we as a city have to understand is, we’ve been promoting all this waterfront development, and most of that waterfront development is happening in the zone that is getting evacuated right now,” said Vishaan Chakrabarti [7] in a telephone interview with Observer.com [7]. “We’re talking about thousands and thousands of housing units. It’s fine for that housing to be there, but we have to figure out a way to protect it all.”

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Chakrabarti suggests [7] there’s something we could learn from the Dutch [9], who built sea gates twice the size of the Eiffel Tower at the mouth of the Rhine to Rotterdam and its vital port from storm surges. Called Maeslantkering, or the “Maelstrom Barrier”, the gates can be closed when storms close in while still allowing ships to take shelter in the harbor. When the storm passes, the gates can be opened to allow for business as usual. It’s a clever idea but it comes with a big price tag. It cost the Dutch $4 billion to build the sea gate, and that was back in 1997. Since New York would probably need three different gates to fully protect waterfront developments, potential costs could be closer to $10 billion. [7]

Still, New York is a city of investors, right? They should recognize a good venture when they see one. “Climate change is here, and we clearly have to acknowledge that these unusual weather events are going to become more and more frequent, and we’re going to have to do something about it because we could lose much more than we’re going to save if we don’t invest in the right infrastructure,” Mr. Chakrabarti said.

Via Observer.com [7]


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[5] Hurricane Sandy: http://inhabitat.com/tag/hurricane-sandy

[6] New York's crumbling infrastructure: http://inhabitat.com/how-americas-infrastructure-can-be-strengthened-against-future-natural-disasters/

[7] Observer: http://observer.com/2012/10/new-new-amsterdam-should-new-york-do-like-the-dutch-and-building-some-skyscraper-sized-sea-gates/

[8] Weather of the Future: http://www.amazon.com/Weather-Future-Extreme-Storms-Climate-Changed/dp/B0058M5I4I

[9] could learn from the Dutch: http://inhabitat.com/interview-koen-olthius-of-waterstudionl/

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