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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.

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



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

in1927 by 900 thousand total number of workers.



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.


 - Kitakyushu-city tourist attractions