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1973 Map of Lopez Pass

Name: 1973 Topographic Map of Lopez Pass
Creator: U.S. Geological Survey
Published: 1981
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1981

About this map

Lopez Island and Decatur Island anchor this hydrographic and topographic study of the San Juan archipelago. In the early 1970s, the landscape shows a mix of protected conservation areas and early development, including the San Juan Islands National Wildlife Refuge protecting small landforms like Crab Island and Skull Island. Transportation is represented by a Landing Strip on Decatur Island and the corridor of Pavey Blvd on the larger Lopez Island landmass.

Oceanic data is particularly detailed, covering the depths of the Strait of Juan de Fuca and Rosario Strait. Coastal features such as Pt Colville and the dangerous Belle Rock Light provide essential navigation points. The map records the local topography from Chadwick Hill down to the indentations of Mud Bay and Hunter Bay, reflecting an era before significant modern expansion, where public lands like Dot Rock State Park and Agate Beach County Park preserved the shoreline.