鳶山堰
Yuanshan Weir is a dam in the Sanxia District of Taiwan that stores water and controls flooding in the Dahan River. The facility features eighteen fixed sluice gates that regulate water levels and flow, with supporting channels that direct water toward supply systems downstream.
The structure was built between 1978 and 1983 to improve water supply and prevent flooding in the region. Managed by Taiwan's Water Resources Agency, its construction modernized local water infrastructure and provided reliable water management for millions of people.
The dam has become a landmark in the community that draws visitors interested in observing water management and its local importance. When water flows through the overflow channels, it creates a visible display that shows how water control protects the region.
Visitors can observe the sluice gates and water flow up close by walking paths around the structure. The site is free to visit and offers good opportunities for photography, especially when water flows over the overflow channels.
During heavy rains, operators quickly activate the overflow channels to prevent dam failure and protect surrounding areas from flooding. This rapid response shows how crucial real-time water management is for protecting populated regions downstream.
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