Sannokai Dam
The 452nd tallest dam in the world
The Sannōkai Dam (Sannōkai damu) is a dam on the Toyosawa River, a tributary of the Kitakami River system, located in the town of Shiwa, Iwate Prefecture in the Tōhoku region of the island of Honshū, Japan. It completed in 1952.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).