2021 Map of Cedar Mountain

About this map

The Diablo Range dominates this landscape along the border of Alameda and San Joaquin counties, where the complex topography of ridges and canyons defines the region's character. Significant infrastructure, notably the Hetch Hetchy Aqueduct, traverses the northern portion of the terrain, representing the critical water transport systems developed for the Bay Area. The presence of Mines Rd following the course of Arroyo Mocho suggests the historic transit and mining corridors that once linked these high ridges to the valleys below. Notable elevations such as Cedar Mtn and Mt Wallace rise above a network of drainages including Corral Hollow Cr and N Fork Lone Tree Cr, illustrating the rugged drainage patterns of the eastern hills. Small landmarks like Sweet Springs and the uniquely named Devils Pit offer specific points of interest for those tracing local geography and historical land use.