2012 Map of Calaveras Reservoir

About this map

Calaveras Reservoir dominates the northern landscape, its waters contained within a high valley bordered by Oak Ridge and Monument Peak. The terrain is defined by steep ridges and deep drainages, including the Alameda Diversion Tunnel and the winding course of Arroyo Hondo. To the south, the suburban expansion of Berryessa meets the foothills, where the Saint Johns Catholic Cem and numerous residential streets like Yosemite Dr and Piedmont Rd mark the transition from city to mountains. The southeastern corner features the protected lands of Alum Rock Canyon, notable for its geological landmarks like Eagle Rock and the Mineral Springs along Upper Penitencia Cr. This 2012 survey illustrates the sharp boundary between the dense residential development of the Santa Clara Valley and the preserved watershed and wilderness areas of the Diablo Range.