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1954 Map of Rocklin

Name: 1954 Topographic Map of Rocklin
Creator: U.S. Geological Survey
Published: 1961
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1961

About this map

Southern Pacific railroad tracks anchor the development of Placer County in the mid-1950s, connecting a string of towns including Newcastle, Penryn, Loomis, and Rocklin. The landscape reveals a transition from industrial activity to emerging suburban pockets like Stallman Corners and Hidden Valley. Granite extraction and mining history are evident through numerous Quarries and named operations such as the Sicily Mine and Alabany Mine dotting the terrain.

Water management is central to this area, shown by an intricate network of canals, siphons, and flumes feeding Clover Valley Reservoir and Caperton Res. A significant portion of the southeast corner is marked by blue hatching, indicating the area destined to be submerged by the Folsom Dam at Lake Folsom. This detail provides a unique record of the land before it was permanently changed by the rising waters of the American River project.