2020 Map of Riverdale South

About this map

Riverdale sits at the northern edge of this McLean County survey, organized around a tight residential grid including Iowa Ave and numbered streets from 3rd St to 10th St. The surrounding landscape is defined by the Public Land Survey System divisions of Townships 145 and 146 North, where a transition from a structured townsite to an expansive rural grid occurs. This 2020 layout preserves the primary arterial routes like Main St and Co Hwy 16, which connect the scattered homesteads and agricultural plots. The terrain is marked by numerous small depressions and wetlands typical of the Missouri Plateau, interspersed between section-line roads such as 35th Ave NW and 37th Ave SW. This map details the modern road network and land management boundaries in the vicinity of the Garrison Dam area.