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2015 Map of Piedras Blancas

Name: 2015 Topographic Map of Piedras Blancas
Creator: U.S. Geological Survey
Published: 2015
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2015

About this map

Point Piedras Blancas defines this coastal section of San Luis Obispo County, where the land meets the Pacific Ocean in a series of jagged promontories and offshore hazards. The shoreline is punctuated by notable landmarks such as Harlech Castle Rock, La Cruz Rock, and Breaker Point, which historically signaled danger to maritime traffic. Moving inland, the topography rises sharply toward the Santa Lucia Range, featuring peaks like Pine Top Mtn and Yellow Hill.

A distinct drainage pattern is evident through several seasonal watercourses, including Arroyo De La Laguna, Arroyo Del Oso, and Arroyo Del Corral, which cut through the coastal terrace from the highlands. This 2015 update by the U.S. Geological Survey captures the preserved character of the Piedras Blancas area, documenting the relationship between the narrow coastal highway corridor and the steep, creek-cut canyons of the interior.