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The Federal Emergency Management Association (FEMA) released new flood insurance maps for New York City and ProPublica has released a nifty interactive map showing how the zones will look if the city actually floods.

This new set of maps replaces those drawn up in 1983, and reveal that twice as many structures now sit in flood zones, according to ProPublica.

The darker the color of the water, the deeper the flooding. Damage to buildings, from least to greatest, goes from light yellow to deep red.

Bloomberg is already at work on a $20 billion plan to protect the waterfront in lower Manhattan and another plan to protect one square mile of Staten Island’s eastern waterfront, where 11 people died during the storm. But the subway systems really aren’t ready for a hurricane yet — and they won’t be for years.

The differences in the maps for this one square mile of Staten Island are shocking.

Here are what they thought were the flood zones in 2007:

NY Flooding

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