Austin Dam failure (Pennsylvania)
The 928th tallest dam in the world
The Austin Dam, also known as the Bayless Dam, was a concrete gravity dam in the Austin, Pennsylvania, area that served the Bayless Pulp and Paper Mill. Built in 1909, it was the largest dam of its type in Pennsylvania at the time. The catastrophic failure of the dam on September 30, 1911, caused significant destruction and loss of life in Freeman Run Valley below the dam.
Dam data from Wikidata (CC0) plus curated additions. Summary from Wikipedia (CC BY-SA).