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Floodgate - Wikipedia
Metropolitan Area Outer Underground Discharge Channel
Tokyo Prioritizes Tackling Floods Before the Next Big One
The underground cathedral protecting Tokyo from floods - BBC
Opening the flood gates at Fukushima - Pursuit
Massive Tokyo Flood Protection System Might Not Be Big Enough
The Front Line of the Ocean, Protecting Tokyo Against Flood …
How one Japanese village defied the tsunami - NBC News
About 540,000 Japan residents told to evacuate after heavy rain …
How a man-made underground cavern helps low-lying Tokyo …