Castlereigh Dam
The 928th tallest dam in the world
The Castlereigh Dam (also spelled Castlereagh) is a gravity dam built across the Kehelgamu Oya, a major tributary to the Kelani River, approximately 3 km (1.9 mi) south-west of Hatton, in the Central Province of Sri Lanka. The dam is a popular location for both locals and tourists.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).