Dainichigawa Dam, Gravity dam in Hakusan, Japan.
Dainichigawa Dam is a gravity dam in Hakusan that rises roughly 60 meters above the riverbed. The structure creates a substantial reservoir that collects water across a valley in this mountainous part of Ishikawa Prefecture.
Construction began in 1952 under Kajima Corporation to address water shortages and flooding along the Tedori River valley. The project was completed and has since provided water supply and flood protection for downstream communities.
The dam represents a milestone in Japanese engineering capabilities during the post-war reconstruction period, marking significant progress in infrastructure development.
The reservoir serves multiple purposes including irrigation for farmland, flood control during heavy rains, and electricity generation through a small power plant. Visitors can explore the surrounding area and enjoy views of the structure, especially when water levels reflect the season.
The structure uses an extended penstock system that channels water through the construction with notable efficiency. This postwar system demonstrates early Japanese techniques in hydropower development and remains an example of engineering from that era.
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