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2012 Map of Horseshoe Keys

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

USGS Topo · Published 2012

About this map

Horseshoe Keys and the surrounding shallow-water features of Monroe County are documented here as they appeared in 2012. This coastal landscape is defined by its complex maritime geography, where isolated landmasses like Johnson Keys and Little Spanish Key emerge from the Gulf of Mexico. The absence of roads or permanent structures reflects a terrain dominated by tidal flats and mangroves, most notably the Little Pine Key Mangrove near the southern edge of the quadrangle.

Navigational hazards and submerged features are prominent throughout the area. Subsurface formations such as Sunken Coral Heads, Sideboard Bank, and Jack Bank illustrate the delicate marine environment. Deep-water passages, including Big Spanish Channel and Rocky Channel, provide the primary nautical corridors through this otherwise shallow archipelago of smaller islands like Crawl Key and Sandfly Key.