Jawa Dam

[The remains at Jawa](https://en.wikipedia.org/wiki/Jawa_Dam%2C_Jordan) include the oldest known dam in the world: a masonry gravity dam dated to about 3500-3400 BCE. It formed part of a larger desert water-management system of dams, channels, deflectors, and reservoirs built to capture violent winter flash floods in one of Jordan's driest regions. Archaeologists think the main reservoir dam may not have survived more than a season, and the wider system probably ceased functioning within a generation.

البادية الشمالية, Mafraq, Jordan