Interesting fact:

Not to alarm any New Yorkers reading this, but the New York City Subway system is but a mere few hours from being flooded—at any moment. Because much of New York City is built on wetlands and swamp, the city relies on an elaborate system of nearly 800 pumps to remove 13 million gallons of water every single day. It would appear to be a good state to ply your trade as a plumber.