Dikgatlhong Dam
The 928th tallest dam in the world
The Dikgatlhong Dam is a dam near the village of Robelela on the Shashe River in Botswana, completed in December 2011. When full, it holds 400,000,000 cubic metres (1.4×1010 cu ft) of water. The next largest dam in Botswana, the Gaborone Dam, has a capacity of 141,000,000 cubic metres (5.0×109 cu ft).
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).