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2021 Map of San Clemente Island North

Name: 2021 Topographic Map of San Clemente Island North
Creator: U.S. Geological Survey
Published: 2021
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2021

About this map

San Clemente Island Naval Auxiliary Landing Field occupies the northern reach of this isolated landmass, where an active runway spans the narrow plateau between the harbor and the sea. The northern tip of the island is defined by a slender bottleneck known as the Isthmus, a geographical pinch point that separates the northernmost heights from the primary landmass. To the northwest, the prominent maritime landmark of Castle Rock stands offshore, marking the approach to Northwest Harbor.

The shoreline is carved into a series of strategic inlets, including West Cove and the protected waters of Wilson Cove further south along the eastern coast. These features highlight the island's dual character as both a rugged oceanic outpost and a specialized military facility. The map provides a precise view of the topography surrounding these naval installations, illustrating how the built environment of the landing field conforms to the natural contours of the northern hills.