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1964 Map of Round Island

Name: 1964 Topographic Map of Round Island
Creator: U.S. Geological Survey
Published: 1966
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1966

About this map

Mackinac Island and its surrounding waterways define the maritime landscape of the mid-1960s, a period when the region's roles as a strategic military outpost and a premier summer retreat were well established. The map highlights the historic footprint of Fort Mackinac and the preserved grounds of Mackinac Island State Park, contrasting the concentrated development within the corporate boundary with the untouched terrain of the neighboring islands.

The central waters of the Straits of Mackinac separate the bustling island from the quieter reaches of Round Island and the northern tip of Bois Blanc Island. Within the Hiawatha National Forest, the shoreline transitions into significant coastal markers such as Point Catosh and Point Detachee, illustrating the navigation-critical nature of the South Channel. This survey provides a precise record of the shoreline and elevation contours before modern shoreline development further altered the landscape.