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1965 Map of Port San Luis

Name: 1965 Topographic Map of Port San Luis
Creator: U.S. Geological Survey
Published: 1966
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1966

About this map

The Irish Hills dominate this coastal landscape of San Luis Obispo County, where steep canyons like Ruda Canyon and Diablo Canyon cut through the mountains toward the Pacific Ocean. At the northern edge, Montana De Oro State Park encompasses the settlement at Spooner and the drainage of Coon Creek. The coastline is marked by jagged seafaring hazards including Lion Rock, Double Rock, and the Santa Rosa Reef, reflecting the maritime importance of this stretch of the Central Coast.

Near the southeastern corner, Port San Luis serves as a key coastal anchor. The US Coast Guard Reservation at Point San Luis features a prominent Lighthouse and radio tower overlooking San Luis Obispo Bay. Inland, the map reveals traces of local industry and rural land use, such as a Mine and Quarry tucked into the hills, alongside scattered infrastructure like a Flowing Well and several Water Tanks.