Bear Island dominates the southeastern quadrant of this maritime-focused survey, surrounded by the cold waters of Lake Superior. The chart highlights critical underwater hazards for navigation, specifically Bear Island Shoal and York Island Shoals, which mark the approach to this northern island chain. Unlike mainland quadrangles, this map primarily documents the bathymetric and topographic interface of the Apostle Islands area, capturing the physical extent of the island and its dangerous surrounding shallows as they appeared in the early 21st century.
4 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1941 · Bayfield
USGS Topo · 1:48,000
1946 · Bayfield
USGS Topo · 1:48,000
1953 · Ashland
USGS Topo · 1:250,000
1954 · Two Harbors
USGS Topo · 1:250,000
1957 · Two Harbors
USGS Topo · 1:250,000
1958 · Ashland
USGS Topo · 1:250,000
1958 · Two Harbors
USGS Topo · 1:250,000
1963 · Rocky Island
USGS Topo · 1:62,500
1963 · Oak Island
USGS Topo · 1:24,000
1963 · Bear Island
USGS Topo · 1:24,000