Carvins Cove, Virginia
The 928th tallest dam in the world
Carvins Cove was a community in both Botetourt and Roanoke County, Virginia, United States, that was abandoned and subsequently inundated in order to create the Carvins Cove Reservoir by the City of Roanoke in the mid–1940s.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).