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1969 Map of Petrolia

Name: 1969 Topographic Map of Petrolia
Creator: U.S. Geological Survey
Published: 1974
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1974

About this map

Petrolia serves as the focal point for this 1960s survey of the Humboldt County coast, noted prominently as the site of State Historical Mon 543 First Oil Field in California. The landscape is defined by the winding course of the Mattole River as it approaches the Pacific Ocean near Mattole Point. The inland terrain is marked by sharp ridgelines like Shenanigan Ridge and Prosper Ridge, which drop steeply toward the sea at Punta Gorda.

Local history is preserved in the location of several Cem and Graves sites near the settlement, as well as the path of Lighthouse Road leading toward the coast. The map details a network of drainage gulches and creeks, including North Fork Mattole River and Conklin Creek, illustrating a remote ranching and resource landscape where small landmarks like Collins Point and Moore Hill denote long-standing land use in the Lost Coast region.