2015 Map of Prairie du Rocher

About this map

Prairie du Rocher sits at the base of a sharp limestone bluff line, marking a historic settlement point in the Illinois bottomlands. This 2015 survey details the geographic relationship between the highland bluffs and the wide floodplain of the Mississippi River. The landscape is defined by its drainage patterns, notably The Discharge and Prairie du Rocher Creek, which navigate the flat fields toward the river. To the south, across the state line in Missouri, the riverfront is dotted with small communities like Little Rock Landing, Thomure, and the northern edge of Ste. Genevieve. Unique natural features like Cow Shank Natural Bridge and several named ravines, including Barbeau Hollow and Burns Hollow, illustrate the complex topography where the plateau meets the river valley. The map also identifies local landmarks such as the Fort Chartres Sportsmans Club Lake and the river-deposited Turkey Island.