2018 Map of Port San Luis

About this map

The Irish Hills dominate this coastal landscape of San Luis Obispo County, where steep-walled drainages such as Ruda Canyon and Diablo Canyon carve through the uplifted terrain toward the Pacific Ocean. This survey reveals a complex network of coastal access and industrial history, particularly through the labeling of Diablo Canyon Mine Canyon and the winding Pecho Valley Rd. The coastline is marked by distinct geological features including Tunnel Point and the sheltering waters of San Luis Obispo Bay. A detailed look at the interior topography shows a series of named canyons like Wild Cherry Canyon and Rattlesnake Canyon that have historically dictated movement through this segment of the Central Coast. The absence of major settlements emphasizes the area's role as a rugged corridor of utility and natural landforms, punctuated by rural routes such as Coon Creek Rd and Lighthouse Rd.