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1985 Map of Todd Harbor
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1985 Map of Todd Harbor

USGS Topo · Published 1985

About this map

Isle Royale National Park dominates this 1985 survey, showcasing the island's complex glacial topography and its isolation within the waters of Lake Superior. The landscape is defined by the parallel spines of Greenstone Ridge and Minong Ridge, which shelter a network of interior waterways including the expansive Siskiwit Lake and Lake Richie. The map documents the infrastructure of the wilderness park, from the Park Headquarters and Rock Harbor Lodge to various designated campgrounds scattered along the coastlines of Todd Harbor and Tobin Harbor. Evidence of the island's industrial past remains visible through the presence of the Saginaw Mine and Mine Point on the southern shore near Conglomerate Bay. This mid-1980s data captures the park's managed wilderness state, including the international boundary with Ontario and the Canada-United States boundary running through the open water to the north.

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Map Details

Date Portrayed1985
Date Published1985
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:100,000
Physical Dimensions35.9 x 24.1 inches

Editions of this 1985 Todd Harbor Map

Historical Maps of Houghton Township Through Time

200 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain