Auburn Dam, also known as the Auburn-Folsom South Unit, is an unfinished federal Central Valley Project facility on the north fork of the American River above Folsom Dam.

Work on the dam was halted in 1977 following a magnitude 5.7 earthquake in 1975 near Oroville Dam, some 50 miles away, raising questions about the Auburn Dam’s safety. The dam remains unbuilt.

According to the dam’s administrator, the Bureau of Reclamation, “ [it] was designed to provide a new and supplemental water supply for irrigation and municipal and industrial needs and to alleviate the badly depleted groundwater conditions in the Folsom South service area.”

In 2008, while still a congressionally authorized project, the State Water Resources Control Board revoked the water rights held by the Bureau of Reclamation for the unfinished Auburn Dam.