
The Sangamon River forms a winding southern boundary for this portion of Mason County, where a complex network of agricultural drainage systems now defines the landscape. Early 21st-century topography shows how the natural hydrology of Perry Slough and Wash Lake Slough has been integrated into managed waterways like the Herget Drainage Ditch and Newton Ditch. Small rural centers such as Poplar City and Biggs persist along the section lines, connected by a rigid grid of county roads.
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This is the sole edition of this map. No revisions or reprints were ever made.
20 maps found

1971 Biggs
Mason County, IL

1975 Chandlerville NW
Mason County, IL

1980 Natrona
Mason County, IL

1982 Duck Island
Mason County, IL

1996 Duck Island
Mason County, IL
2012 Biggs
Mason County, IL
2012 Duck Island
Mason County, IL
2012 Natrona
Mason County, IL
2015 Biggs
Mason County, IL
2015 Duck Island
Mason County, IL
2015 Natrona
Mason County, IL
2018 Biggs
Mason County, IL
2018 Duck Island
Mason County, IL
2018 Natrona
Mason County, IL
2021 Biggs
Mason County, IL
2021 Duck Island
Mason County, IL
2021 Natrona
Mason County, IL

2024 Biggs
Mason County, IL

2024 Duck Island
Mason County, IL

2024 Natrona
Mason County, IL