Map of the Georgetown Divide, El Dorado County, Embracing Also Portions of the Placerville and Forest Hill Divide. Showing the Ditches, Mines and Other Properties of the California Water Company

Cartographer: Amos Bowman

Year: 1873

This historic map, created by civil engineer Amos Bowman, details the rugged terrain of the Georgetown Divide in El Dorado County, California, along with adjacent portions of the Placerville and Forest Hill Divides. Published during the height of California’s mining era, it showcases the extensive network of ditches, mines, and infrastructure owned by the California Water Company. With its finely rendered topography and meticulous labeling, the map offers a rare glimpse into the complex water systems that supported hydraulic mining and gold extraction in the Sierra Nevada foothills during the 19th century.