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1971 Map of Grassy Key

Name: 1971 Topographic Map of Grassy Key
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

Grassy Key and its neighboring islands are depicted in this early 1970s orthophotomap, showing the delicate balance of the Middle Keys' geography before further modern expansion. This unique survey combines aerial photography with topographic data, revealing the intricate water systems of Florida Bay and the Hawk Channel. The transportation corridor is anchored by the Long Key Viaduct, which links Conch Key to the northeast. Notable development on Duck Key is visible, including its distinct canal system and golf course.

Smaller landforms such as Walkers Island and the Toms Harbor Keys dot the shallow waters between the major keys. The map illustrates the vital navigation routes of the era, including the Intracoastal Waterway and various cuts like Toms Harbor Cut. This record provides an essential view of the Florida Keys' transition into a developed island chain, preserving the exact footprint of settlements and infrastructure during the 1970s.