Thread: Subways
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Old 12-06-2008, 04:42 PM
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Quote:
Originally Posted by kcdusk
In it, they said the NYC subway system has 4 million gallons (!) of water pumped out of it each day.
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The math nut in me had to do this, and I figured I would share.

Ok the New York Subway system has 443 miles of Track tunnels and about 300 miles of supporting tunnels. Assuming a diamter of 16 feet for the track tunnels and 7 feet for the supporting tunnels. Gives about 60,959,463 cubic feet. I am going to round up to 65 million including stations. A gallon is .133 cubic feet. So the system would have filled in approximately 122 days.

I would guess you could calculate other cities by comparing annual rainfall, but my guess is that most would be flooded by the time T2k rolls around.
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