The Badlands Dam

The Petrochem dam is located in the southernmost area of Rancho Coronado, in Night City proper.

Overview
Located in one of the poorest areas of Rancho Coronado, this dam - with a large white Petrochem logo on its front - is to all appearances abandoned. Despite still being operational, the reservoir basin lies empty of water and it is instead overran with junk from the neighboring landfill. At some point there was a large quantity of water, as seen from the shoreline marks along the basin's wall.

It's unknown why it lacks water, though it probably has to do with the basin's pollution. Another dam prevents Laguna Bend from emptying its water here.