Tokuyama Dam, Embankment dam in Ibigawa, Japan
Tokuyama Dam is an embankment dam located in Gifu Prefecture that stands as one of Japan's tallest hydraulic structures. The facility creates the country's largest reservoir and generates electricity through hydroelectric power production.
Construction began in 2000 and finished in 2008 following decades of planning by the Electric Power Development Company. The hydroelectric facility started operations in stages and has shaped the energy supply for the region ever since.
The construction of the dam required the relocation of an entire village, transforming the local community and landscape of the Ibi River region.
The dam is visible from viewpoints in the surrounding area, giving visitors a good sense of its scale and structure. Dress appropriately for mountain weather, as conditions can change quickly at this elevation.
Engineers used rapid fill placement techniques during construction, a method that set new standards for large-scale dam building in Japan at that time. This approach allowed work to progress faster than traditional construction methods would have permitted.
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