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1956 Map of San Luis Obispo

Name: 1956 Topographic Map of San Luis Obispo
Creator: U.S. Geological Survey
Published: 1967
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1967

About this map

The Santa Lucia Range dominates the Central Coast landscape, stretching from the northern coastal peaks down toward the valley floors. This mid-century survey captures a period of coastal development and military presence, highlighting the sprawling Hunter Liggett Military Reservation and Camp Roberts Military Reservation near the Salinas River. Along the shore, traditional fishing and ranching outposts like Cambria and Cayucos appear alongside the expanding seaside communities of Pismo Beach and Morro Bay, the latter marked by the iconic landmark of Morro Rock.

Inland, the agricultural heart of the region is centered on Paso Robles and San Luis Obispo, linked by the vital corridor of the Southern Pacific RR. Further east, the terrain shifts dramatically into the arid expanse of the Carrizo Plain and the Kettleman Hills, where the landscape is defined by large ranch holdings and seasonal water bodies like Soda Lake. The map also documents the early infrastructure of the Nacimiento Reservoir and Twitchell Reservoir, vital water management projects for the burgeoning Central Valley and coastal communities.