Ushibuse River French-style Stepped Dam, Water control dam in Matsumoto, Japan.
The Ushibuse River French-style Stepped Dam is a water control structure in Matsumoto featuring multiple tiers of stone that create a cascading flow pattern. The stacked arrangement directs water downward while stone groundsills and bank reinforcements protect the surrounding environment.
Engineers completed this water control structure in 1932, incorporating design elements from the Basses-Alpes region of France. The design was developed to address local flood control challenges.
The structure represents a period of technological exchange between Japan and Europe, earning recognition as an Important Cultural Property for its engineering significance.
The site is accessible year-round to observe its water management function. Visitors can view the stonework from nearby vantage points that require no strenuous effort to reach.
Each stone tier functions as both a water speed reducer and a natural filtration system. This dual-purpose design was specifically adapted to suit local conditions.
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