2015 Map of Big Foot Mountain

About this map

The Mendocino and Sonoma county line bisects this 2015 survey, revealing a landscape defined by sharp ridges and deep canyons. Big Foot Mountain and Crystal Peak dominate the northern terrain, while the southern reaches descend toward the backwaters of Lake Sonoma. This map documents a sparsely populated area where the only significant thoroughfare is the Cooley Ranch Rd, snaking through the hills near Thompson Ridge. The drainage patterns are intricate, with several major creeks including Rancheria Cr, Dry Cr, and the Wheatfield Fork Gualala River carving out valleys like Franks Canyon and Big Foot Canyon. Historically, these watercourses and ridges like Elk Range and Lyle Ridge have dictated the limited movement and land use in this part of the California Coast Ranges.