2022 Map of Potosi

About this map

The Potosi area of Grant County, Wisconsin, sits at a unique geographical and political crossroads where the Mississippi River meets the driftless bluffs of the Midwest. The landscape is defined by deep, winding hollows such as Graham Hollow and Yankee Hollow that drop toward the river valley. The 2022 survey detail shows a cluster of historic lead-mining era settlements including British Hollow, Tennyson, and Rockville, each maintaining its distinct identity along the ridge-and-valley road network. The map also records several local burial sites, such as Saint Thomas Cem and British Hollow Cem, which are vital for genealogical research in this long-settled region. Waterways like the Platte River and the engineered Potosi Canal highlight the historical reliance on river transport, while Island Number Two Hundred Eleven marks the shifting boundary between Wisconsin and Iowa.