Gariep Dam
The 195th tallest dam in the world
The Gariep Dam is located in South Africa, near the town of Norvalspont, bordering the Free State and Eastern Cape provinces. Its primary purpose is for irrigation, domestic and industrial use as well as for power generation. It is the largest dam in South Africa.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).