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1985 Map of Todd Harbor, 1986 Print
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1985 Map of Todd Harbor

USGS Topo · Published 1986

About this map

Isle Royale National Park dominates this 1985 survey, showing the intricate north-shore topography where the island meets Lake Superior. The landscape is defined by parallel geologic formations, most notably Minong Ridge and Greenstone Ridge, which create a series of elongated valleys and lakes. Within this wilderness, the map records the Haytown Mine, a remnant of the island's copper mining history located near the shores of Todd Harbor.

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Map Details

Date Portrayed1985
Date Published1986
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.1 x 27 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