Moriyoshizan Dam
The 185th tallest dam in the world
Moriyoshizan Dam is located at 31 Himegadai, Nemorita, Kitaakita, Akita Prefecture, Japan and was constructed in the middle reaches of the Komata River, which is part of the Yoneshiro River system. The Moriyoshi Dam is constructed upstream. The Yoneshiro River basin is rich in forest and mineral resources, and before land transportation developed, goods were transported mainly by boat. However, the basin has often flooded due to heavy rains, and it has also been known as a violent river that threatens the lives and property of the people living in the basin. In July 1972, the Yoneshiro River area was hit by the largest flood since the war, causing extensive damage. This flood was the trigger for the construction of Moriyoshizan Dam. The survey office was established in 1973, and the Moriyoshiyama Dam was completed in 2011 after 39 years of construction.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).