Doyo Dam
The 209th tallest dam in the world
Doyo Dam is a rock-fill embankment dam located 6 km (4 mi) north of Shinjō in the Okayama Prefecture, Japan. It creates the upper reservoir for the 1,500 MW Matanoagawa Pumped Storage Power Station while the Matanoagawa Dam creates the lower.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).