Hōnen'ike Dam, Multiple-arch dam in Kanonji, Japan
Hōnen'ike Dam is a multi-arch dam with six curved buttresses rising 32 meters in the Sanuki Mountains, spanning about 158 meters in length. The structure holds water for irrigation across the surrounding farmland and shows how engineers of that era built for lasting durability.
Construction began in 1926 and finished in 1930, marking an important step in Japan's development of water infrastructure. The project showed the nation's commitment to bringing advanced water technology to rural areas.
This structure holds recognition as an Important Cultural Property in Japan, attracting visitors interested in historical engineering achievements. The design reflects a turning point in how the country approached water management and shaped the landscape.
The dam sits in hilly terrain and is accessible by car, with good views from above the structure. Dry weather makes for the safest and most comfortable visit, as paths around the construction are easier to walk.
The dam is known for periodic water release events through its gates, a technical sight that shows the engineering working in action. This spectacle offers a rare glimpse into how the structure actually operates and draws particular attention from engineering enthusiasts.
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