
The Mississippi River forms the dominant boundary of this quadrangle, separating the riverfront settlements of Hamburg and Hardin from the sprawling wetlands of the Two Rivers National Wildlife Refuge. The landscape is a complex network of side channels and backwaters, including Westport Chute, Kickapoo Chute, and Sand Slough, which weave around substantial landmasses like Westport Island and Kelly Island. To the east, the terrain rises into the dissected bluffs of Calhoun County, marked by deep valleys such as North Prong Michael Hollow and Gresham Hollow.
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This is the sole edition of this map. No revisions or reprints were ever made.
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