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2017 Map of Sucia Island

Name: 2017 Topographic Map of Sucia Island
Creator: U.S. Geological Survey
Published: 2017
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2017

About this map

Sucia Island and Patos Island anchor this maritime survey of the northernmost San Juan Islands. The geography is defined by a series of narrow, finger-like peninsulas and sheltered inlets, including Echo Bay and Shallow Bay, which provide critical natural harbors in the Strait of Georgia. The boundary line between Whatcom and San Juan counties cuts diagonally across the open water of Boundary Pass, marking a political division in this archipelago.

On the western edge, Alden Point and Active Cove define the profile of Patos Island, while the eastern reaches of Sucia Island are protected by the Ewing Cluster Islands and Clements Reef. These small outcroppings, such as Justice Island and South Finger Island, illustrate the complex sandstone formations that characterize the local shoreline, offering a clear record of the area's coastal morphology.