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1985 Map of Siskiwit Bay

Name: 1985 Topographic Map of Siskiwit Bay
Creator: U.S. Geological Survey
Published: 1994
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1994

About this map

Isle Royale National Park dominates the landscape of this 1980s-era topographical record, showing the complex chain of ridges and harbors that define the southern portion of the island in Lake Superior. The terrain is characterized by parallel formations such as Greenstone Ridge and Minong Ridge, which enclose significant interior water bodies like Siskiwit Lake and Lake Desor. These geologic features are crucial for understanding the wilderness character and natural history of the Keweenaw region.

Along the jagged coastline, numerous islands and bays serve as landmarks for maritime history and navigation. The Isle Royale Lighthouse stands on Menagerie Island at the mouth of Siskiwit Bay, marking a critical point for vessels traveling the northern reaches of the lake. Sheltered inlets like Fishermans Home Cove and Malone Bay provide evidence of the island's traditional use and topography before modern conservation efforts reached their current state.