Kidson Weir
The 928th tallest dam in the world
The Klip River (or in Afrikaans: Kliprivier, lit. 'Stone river') is the main river draining the portion of Johannesburg south of the Witwatersrand, and its basin includes the Johannesburg CBD and Soweto. The mouth of the river is at Vereeniging where it empties into the Vaal River, which is a tributary to the Orange River. Besides Vereeniging, other towns along the river include Henley on Klip, Lenasia and Meyerton.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).