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Catalyst
Season 1 • Episode 23 • Tokyo Flood Prevention
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Catalyst Season 1, Episode 23: Tokyo Flood Prevention
Fifty meters beneath the teeming mega-city of Tokyo is an underworld river system - 6.4km of tunnels, colossal water tanks, massive pillars, giant pumps that remove 200 tons of floodwater every second. It’s an engineering marvel built to protect Tokyo against the increasing threat of flooding. Watch Catalyst Season 1, Episode 23 Tokyo Flood Prevention in HD free online. Enjoy high-quality streaming of Catalyst Season 1, Episode 23 and share your thoughts in the comments below!
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