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  1. Floodgate - Wikipedia

  2. Metropolitan Area Outer Underground Discharge Channel

  3. Tokyo Prioritizes Tackling Floods Before the Next Big One

  4. The underground cathedral protecting Tokyo from floods - BBC

  5. Opening the flood gates at Fukushima - Pursuit

  6. Massive Tokyo Flood Protection System Might Not Be Big Enough

  7. The Front Line of the Ocean, Protecting Tokyo Against Flood …

  8. How one Japanese village defied the tsunami - NBC News

  9. About 540,000 Japan residents told to evacuate after heavy rain …

  10. How a man-made underground cavern helps low-lying Tokyo …