1998 Map of Tonica

The terrain is defined by the incision of Bailey Creek in the north and Sandy Creek in the south, which break the otherwise steady elevation of the Illinois prairie. Smaller, specialized airstrips such as the Ashley Farms Landing Strip and Janusick Landing Strip reflect the intersection of aviation and agriculture. Historical burial grounds including Fairview Cem and the Old Cem provide essential data points for those tracing family lineages in these rural communities.