Remember when the concrete spillway of the nation’s tallest dam developed a giant hole, and downstream communities were evacuated out of fear that a wall of water would charge down the river?

It turns out that the same structural problems that caused the failure at Oroville Dam in February 2017 also exist at the spillway of San Antonio Dam, just two miles north of Lake Nacimiento and above the community of Bradley.

Those problems have been known “for quite sometime,” according to the current manager of the dam operator. But the state didn’t take notice or downgrade the dam’s safety condition until after it revamped its oversight process following the massive failure in Northern California.