2023 Map of Thunder Bay Island
USGS Topo · Published 2023About this map
Thunder Bay Island and its smaller neighbors lie amidst the waters of Lake Huron off the coast of Alpena County. This 2023 survey provides a modern topographic record of this isolated archipelago, which includes Sugar Island and Gull Island. The map shows these landmasses defined by the Public Land Survey System grids t31n r10e and t30n r10e, marking the transition from the lake into the designated sections of Alpena. The terrain here is dominated by low-lying wetland signatures and the rocky outlines of the island chain, serving as a critical navigation point and a remote natural landscape at the edge of Thunder Bay.
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Map Details
Editions of this 2023 Thunder Bay Island Map
This is the sole edition of this map. No revisions or reprints were ever made.
Other maps of this area
1954 · Tawas City
USGS Topo · 1:250,000
1954 · Alpena
USGS Topo · 1:250,000
1957 · Alpena
USGS Topo · 1:250,000
1958 · Alpena
USGS Topo · 1:250,000
1958 · Tawas City
USGS Topo · 1:250,000
1969 · Alpena
USGS Topo · 1:250,000
1971 · Thunder Bay Island
USGS Topo · 1:24,000
1971 · Middle Island
USGS Topo · 1:24,000
1971 · North Point
USGS Topo · 1:24,000
1971 · South Point
USGS Topo · 1:24,000