
The city of Maroa anchors this survey of central Illinois, situated at the boundary of De Witt and Macon counties. This landscape is defined by its transition from the structured agricultural grid of the prairie to the winding drainage basins of Salt Creek and its tributaries. To the north, the terrain softens around Weldon Springs Lake and the wooded bluffs near Rose Cemetery, offering a distinct contrast to the expansive farmsteads that dominate the southern half of the quadrangle. Local history researchers will find the small settlement of Ospur and the Maroa Township Cemetery as key markers of the area's development. The hydrological network, including the North Fork Lake Fork and Banta Lakes, illustrates how water management and natural drainage have historically shaped the township boundaries and local road placements in this part of the Illinois Corn Belt.
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1929 · Decatur
USGS Topo · 1:62,500
1933 · Decatur
USGS Topo · 1:62,500
1954 · Niantic
USGS Topo · 1:62,500
1957 · Kenney
USGS Topo · 1:62,500
1957 · Maroa
USGS Topo · 1:62,500
1958 · Peoria
USGS Topo · 1:250,000
1958 · Decatur
USGS Topo · 1:250,000
1961 · Peoria
USGS Topo · 1:250,000
1961 · Decatur
USGS Topo · 1:250,000
1963 · Peoria
USGS Topo · 1:250,000