Sakuma Dam
The 34th tallest dam in the world
The Sakuma Dam (Sakuma damu) is a dam on the Tenryū River, located on the border of Toyone, Kitashitara District, Aichi Prefecture on the island of Honshū, Japan. It is one of the tallest dams in Japan and supports a 350 MW hydroelectric power station. Nearby a frequency converter station is installed, allowing interchange of power between Japan's 50 Hz and 60 Hz AC networks.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).