The Giant Underground Tunnels Protecting Tokyo From Floods

If you believe the hype, then the Metropolitan Area Underground Discharge Channel stops Tokyo flooding. It doesn't. But it is one colossal part of a huge network ...

36 thoughts on “The Giant Underground Tunnels Protecting Tokyo From Floods

  1. I remember seeing these in mirrors edge and thought it was just a part of the dystopian utopia theme. Also why is Tokyo’s basement just a flooded mines of Moria

  2. They should put some hydroelectric in those tunnels for when the water runs. Include a huge battery station. That water pressure could compress a lot of springs that could be incorporated into those chambers. Using the hydroelectric from all the water to compress them and release when they need power. Help pay that bill.

  3. 2:08 – I was listening to this with another tab open and I exploded when I heard a Northern lass saying "cheesy music, ya got."
    Once you hear it, you can never unhear it… I am WEEPING with laughter.

  4. I just did some back-of-the-napkin calculations. 177x78x18 meters is 248,508 cubic meters. That translates to 248,508,000 liters of water, or 65,648,868.3874 US gallons. That's a LOT of water!

  5. they managed to build all that for $2B? In the US, it would cost a few million just for the initial surveys to determine if it could work, tens of millions in designing and planning, then an estimate of $2B would be presented to the government. Once started, the costs would keep increasing until it was either cancelled or went beyond $10B and still came up with shoddy work

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