Adobe Gulch
Adobe Gulch is a valley in San Mateo County, California, about long, located on the west side of Upper Crystal Springs Reservoir. It has an elevation of 97 meters, or 318 feet. It is located at 37-29'53 N and 122-20'51 W.. Adobe Gulch is the northernmost of several tributaries that descend the eastern flank of the Santa Cruz Mountains to Upper Crystal Springs Reservoir.