
Assumption and Moweaqua anchor this central Illinois landscape, where the agricultural grid is intersected by the winding paths of several creeks. The terrain is defined by the drainage systems of Flat Branch and Big George Branch, which cut across the structured township and range system of the prairie. Smaller waterways like Willow Branch, Oak Branch, and Sorghum Branch reach into the surrounding farmland, illustrating the natural irrigation that supports the region's productivity. In the southern portion of the quadrangle, Lake Fork provides a notable hydrologic feature.
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This is the sole edition of this map. No revisions or reprints were ever made.
1942 · Shelbyville
USGS Topo · 1:62,500
1946 · Shelbyville
USGS Topo · 1:62,500
1947 · Pana
USGS Topo · 1:62,500
1949 · Dalton City
USGS Topo · 1:62,500
1949 · Pana
USGS Topo · 1:62,500
1952 · Assumption
USGS Topo · 1:62,500
1958 · Decatur
USGS Topo · 1:250,000
1961 · Decatur
USGS Topo · 1:250,000
1974 · Willeys
USGS Topo · 1:24,000
1981 · Tower Hill
USGS Topo · 1:24,000