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2012 Map of Farallon Islands

Name: 2012 Topographic Map of Farallon Islands
Creator: U.S. Geological Survey
Published: 2012
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 2012

About this map

The Farallon Islands emerge from the Pacific Ocean in this 2012 survey, providing a sharp look at the isolated rocky outcrops west of San Francisco. The sheet focuses on the distinct topography of Southeast Farallon and Maintop Island, separated by a narrow channel. Named landmarks like Tower Hill and Main Top designate the highest elevations on these craggy landmasses, which serve as critical maritime markers and wildlife habitats.

Surrounding waters include sheltered spots such as Maintop Bay and Fisherman Bay, while smaller formations like Middle Farallon and Seal Rock stand as lonely sentinels in the sea. The inclusion of features like Great West Arch highlights the natural erosion and geological character of this protected archipelago. This map offers a clean record of the islands' coastal geometry as documented by the National Hydrography Dataset and recent satellite imagery.