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1985 Map of Grand Portage

Name: 1985 Topographic Map of Grand Portage
Creator: U.S. Geological Survey
Published: 1985
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1985

About this map

Lake Superior dominates this mid-1980s survey, illustrating the maritime and wilderness character of the international border region between Minnesota, Michigan, and Canada. The map highlights the rugged topography of Isle Royale National Park, where the parallel elevations of Greenstone Ridge and Minong Ridge define the island's interior. On the Minnesota mainland, the Grand Portage Indian Reservation and Grand Portage State Forest protect the shoreline near Hovland and the historic transition at Pigeon Point.

The landscape is characterized by a dense network of inland waters, such as Feldtmann Lake and Lake Desor, and prominent peaks like Mount Desor. Near the settlement of Mineral Center, numerous creeks like Hollow Rock Creek drain into the cold waters of the great lake. This map serves as a detailed record of the undeveloped northern frontier, capturing the intricate archipelago of the Susie Island group and the navigational landmarks of Washington Harbor before modern digital mapping.