Visualizing Water Distribution and Avoiding Conflict

Circular Tank Diversion Works

In 1939, the introduction of numerous circular tank diversion works, which distribute water in an equal manner, in a terrace that stretches along the right bank of the Tenryu River, led to the largest group of such facilities in Japan. This water-distribution system uses a syphon in the center of the cylinder to eject water and create a uniform surface. Then the water is precisely distributed by streaming it through a given number of holes in the exterior wall, the volume and flow velocity of the water do not need to be adjusted, and any sort of visual deception is impossible. While deeply rooted in equity, the system’s emphasis on avoiding conflict says something about the Japanese character.

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  • Circular Tank Diversion Works

    Ina, Tatsuno, Minowa, and Minamiminowa, Nagano Prefecture

    1939

  • Circular Tank Diversion Works

    Ina, Tatsuno, Minowa, and Minamiminowa, Nagano Prefecture

    1939