1982 Map of Harmon

To the south, the terrain shifts toward the wetlands and conservation lands of the Green River State Wildlife Management Area, which borders the winding Green River. A complex network of drainage features, including the Winnebago Ditch and Howland Creek, illustrates the long-standing efforts to manage the prairie floor for farming. Small rail stops and localized points like Van Petten and Townhall provide specific coordinates for family historians tracking the movement of early settlers through the Harmon and Hamilton townships.