Tagokura Dam
The 41st tallest dam in the world
Tagokura Dam is a gravity dam, on the Tadami River in the Fukushima Prefecture of Japan. It is owned and operated by the Electric Power Development Company (J-Power). The lake which it impounds is known as Lake Tagokura.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).