Oudebaaskraal Dam
The 928th tallest dam in the world
Oudebaaskraal Dam is an earth-fill type dam located on the Tankwa River near Ceres, Western Cape, South Africa. It was established in 1969 and serves mainly for irrigation purposes. The hazard potential of the dam has been ranked significant (2). Hundreds of pink flamingos can be spotted there at certain times, and the areas of the dam which are covered in algae have a kelp type smell similar to the ocean.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).