相模大堰, Water management facility in Ebina and Atsugi, Japan
Sagami weir is a water control structure built across the Sagami River between Ebina and Atsugi. The facility has multiple gates and channels designed to manage river flow and distribute water to surrounding areas.
The weir was completed in 1998 to address water shortage issues affecting Kanagawa Prefecture and its surrounding municipalities. The project plays a role in supplying communities across the region.
The facility hosts the annual Mizuki Festa event, where visitors can cross the management bridge and explore operational control rooms.
Visit during daylight hours to get a clear view of the operation from observation points along the facility. The site is open to the public but offers few visitor amenities, so plan accordingly.
The structure incorporates specialized fish passages with varying water speeds: gentle flows for small fish and rapid currents for larger species.
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