1951 Map of La Porte

About this map

Gold mining operations and timbered ridges dominate this high-country landscape along the Plumas and Sierra County line in the early 1950s. The region is marked by an extensive network of ditches and hydraulic mining scars, notably at the Yankee Hill Placer Diggings and the Howland Flat area. Traditional hard-rock and placer sites are scattered throughout, including the Union Keystone Mine near the northern boundary and the Caledonia Mine tucked within the Plumas National Forest. Local history is centered on old mountain settlements and remote outposts such as Gibsonville, Port Wine, and the St Louis site, the latter of which still retains its St Louis Cem. The complex hydrology of the Sierras is evident in the many ravines and creeks, such as Slate Creek and Canyon Creek, which historically supported the heavy water demands of the local mining industry.