​EL DORADO COUNTY HISTORICAL MUSEUM

History of Mormon Island and Salmon Falls

Mormon Island, Salmon Falls, and numerous small mining camp sites and flats were submerged underwater when Folsom Dam created Folsom Lake in 1955. At low water the remains of these towns can sometimes be seen, though very rarely.

Visible remnants of numerous foundations and artifacts include a dairy, a winery, tailings from mining operations, and the Natoma Ditch, constructed in 1851 to bring water to the dry diggings.