1954 Map of Rocklin

About this map

The Southern Pacific railroad corridor anchors the Sierra Nevada foothills in this mid-century survey, linking the fruit-growing and granite-quarrying centers of Rocklin, Loomis, Penryn, and Newcastle. The landscape is a complex network of industrial and agricultural water management, defined by numerous canals, flumes, and basins such as the Clover Valley Reservoir and Sicily Reservoir. Along the ridges and ravines, the map records the region's mining legacy through specific sites like the Alabama Mine, Mary Len Mine, and Highway 40 Mine, alongside various unnamed quarries near the Rocklin city boundary. A significant historical detail is the blue hatching near the North Fork American River, indicating the area slated for submergence by the Folsom Res following the completion of the Folsom Dam. This transition from a mining and rail landscape to one dominated by large-scale water storage is further evidenced by the smaller Roseville Reservoir and Rocklin Reservoir dotting the hillsides.