Oyan River Dam
The 928th tallest dam in the world
The Oyan River Dam is in Abeokuta North local government area of Ogun State in the West of Nigeria, about 20 km north west of the state capital Abeokuta. The dam crosses the Oyan River, a tributary of the Ogun River. It is used primarily to supply raw water to Lagos and Abeokuta, but has potential for use in irrigation and power generation.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).