History20th century (site itself Neolithic, c. 11,500-7,000 BP)Syrialow confidence

Abu Hureyra was excavated between 1972 and 1973 before the Tabqa Dam's construction flooded the site, which now lies beneath Lake Assad.

Notes on verification

Corroborated by Wikipedia and Oriental Institute excavation report, consistent details on dates, dam construction, and flooding timeline.

Sources