1955 Map of Jamul Mountains

About this map

The San Miguel Mountain range dominates this mid-century landscape of southern San Diego County, situated between the expanding residential hubs of Spring Valley and La Presa. This 1955 survey, updated with 1970s aerial data, reveals a transition from inland ranching to suburban development. The pink-tinted urban extensions around Casa de Oro and Homelands contrast with the rugged canyons of the south, where Rancho del Otay and Fenton Ranch sit near the waters of the Upper Otay Reservoir and Lower Otay Reservoir. Historical landmarks like Bancroft Point and the Steele Canyon Bridge provide concrete reference points for local history. To the west, the sprawling Sweetwater Reservoir is defined by features such as Neal Cove and Gum Tree Cove, while the southern portion of the quadrangle shows the early grounds of Southwestern College. Rural outposts like Jamul and The Oaks School remain isolated in the eastern canyons, still largely connected by routes like Otay Lakes Road.