There was an artificially created lake in Tucson called Silver Lake. The lake was built just prior to the Civil War. It was built with an earthen dam. Its water source was the Santa Cruz River.
Silver lake was located about 2 miles south of Tucson. It served as a recreation area for swimming, boating, and bathing. The lake provided power for the first flour mill in the Tucson village area.
Raines, Elaine. “Tucson's Lake Resort.” Arizona Daily Star. May 17, 1953.