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001-000053.029
Japan
001-000053, 2005, G-Cans, asia, concrete, flood, industrial tourism, inside, japan, nobody, prevention, reservoir, tank, tokyo, underground
G-Cans Flood Prevention System
Jean-Philippe DAIN
24 August 05
Jean-Philippe Dain
Saitama prefecture
Kasukabe City
JPN
The G-Cans water-tank, Kasukabe City, Saitama prefecture, Japan. G-Cans is the water collecting system part of a massive underground system intended to collect water in the greater Tokyo area in order to prevent floods (Geo-Site). The G-Cans project works started in 1992 ; it consists of five concrete containment silos with a height of 65 m and a diameter of 32 m, connected by 6.4 km of tunnels, 50 m beneath the surface, as well as a large water tank with a height of 25.4m, with a length of 177m, with a width of 78m, and with 59 massive pillars connected to a number of 14,000 horsepower (10 MW) turbines that can pump up to 200 tons of water into the Edogawa river per second. The G-Cans installations are also a tourist attraction, and can be visited for free. The main water tank resembles a temple and has been used in some movies and TV programs to create mystic scenes.