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Kawachi Reservoir


Kawachi Reservoir is the first-class civil construction heritage that triggered the registration of World Cultural Heritage of Meiji Japan’s Industrial Revolution.
The Kawachi Reservoir was constructed for the industrial water

supply to Yawata Steel Works. 
The dam was constructed at the Okura River and upper stream of the dam was expanded and making the 7milion cubic metre reservoir.

In the construction of the dam, the unprecedented design in the world has been applied in order to harmonize with nature and to save the construction cost.
The stones come out from the mountain when the river was expanded have

been utilized for construction of the dam.

All stones are cut into sizes and shapes by the stone technicians  according

to the place of use.  The large size stone were used at the main construction

of the dam and the small size stones were used for other places as per size

and shape. Construction was started in 1919 and was completed in 1927

by 900 thousand total number of workers.

Specification of the dam

・height : 43.1 metre 
・Width : 189 metre

・Water storage capacity : 7,000,000 cubic metre
・Owner : Nippon Steel & Sumitomo Metal Corporation


Minami Kawachi-bashi bridge

The only remaining lenticular truss bridge in Japan 
( lens type truss bridge), located at the south side of Kawachi Reservoir and
it was designed by Hisanori Numata.
This shape and color really harmonize with nature and become a symbol
of the Iron town Yahata.


 - Blog, Kyushu tourist attractions