1996 Map of Cucamonga Peak

About this map

Rancho Cucamonga and the neighboring communities of Alta Loma and Etiwanda sit at the dramatic interface between the urbanized San Bernardino Valley and the steep San Gabriel Mountains. This 1996 revision documents the residential expansion of these citrus-growing colonies toward the edge of the San Bernardino National Forest. While the lower elevations are marked by a formal grid including Archibald Ave and Highland Ave, the northern half of the map is dominated by high-altitude peaks like Mount Baldy, Cucamonga Peak, and Telegraph Peak. The landscape is defined by the alluvial drainage systems of Day Creek and Deer Creek, which flow from deep incisions like Day Canyon into the developed valley below. Educational landmarks such as Chaffey Union Junior College and local institutions like the Summit Avenue School serve as anchors for the local community during this period of suburban transition.