1985 Map of Dixon

South of the river, the terrain transitions into the lowlands of the Green River basin, home to the Green River State Wildlife Management Area. The map meticulously records the rural character of the region through its small settlements like Grand Detour, Polo, and Amboy, while also documenting the historical infrastructure of the Hennepin Canal in the southwest. From the White Pines Forest State Park to the manufacturing hub of Rochelle, the sheet provides a clear record of the area's mid-century development and land use.