2012 Map of San Onofre Bluff

About this map

San Onofre Bluff defines the narrow coastal corridor shown here along the southern California shore. This 2012 survey by the U. S. Geological Survey focuses on the thin margin where the land meets the Pacific Ocean, specifically within the Gulf of Santa Catalina. The landscape is dominated by the steep coastal terraces and drainage features like Foley Canyon, which cut through the bluffs toward the sea. Transportation history is evident in the inclusion of Old Hwy 101, the iconic route that served as the primary north-south artery before modern interstates. The small rail or settlement point at Agra sits near the southeastern edge of the sheet, representing one of the few named landmarks in this largely open coastal stretch.