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1984 Map of Portage Entry, 1986 Print
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1984 Map of Portage Entry

USGS Topo · Published 1986

About this map

Keweenaw Bay meets the southern end of the Keweenaw Peninsula here, where the critical waterway of the Portage River provides a passage toward the copper mining heartlands. The landscape is defined by the entrance to the ship canal, marked by the Portage Entry Lighthouse and the historical Crebassa Latitude Post at Jacobsville. This shoreline was essential for the regional economy, facilitating the movement of vessels between Lake Superior and the industrial hubs near Torch Lake.

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Map Details

Date Portrayed1984
Date Published1986
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22 x 26.8 inches

Editions of this 1984 Portage Entry Map

This is the sole edition of this map. No revisions or reprints were ever made.

Historical Maps of Baraga Township Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain