1958 Map of Green Valley

About this map

The Sierra Pelona range dominates this landscape in the late 1950s, defining a region where critical water infrastructure meets the steep canyons of northern Los Angeles County. The Los Angeles Aqueduct Tunnel cuts through the mountains, leading toward the San Francisquito Powerhouse No 2 and the Bouquet Reservoir. This complex engineering network is contrasted by the numerous campgrounds, such as South Portal Campground and Bouquet Campground No 3, which serve the recreational needs of the era. Settlement is concentrated in Green Valley, while the surrounding terrain is marked by fire suppression and resource extraction. Evidence of earlier industry persists at the Silver King Mine and California Mine, alongside the Texas Canyon Fire Control Sta and various lookout points like Jupiter Mountain. The map reveals a land management pattern of firebreaks and truck trails like the Del Sur Truck Trail.