The Illinois River corridor in Marshall County is defined by its sprawling backwater lakes and bottomland geography. This riverine landscape includes expansive bodies of water such as Senachwine Lake, Swan Lake, and Sawmill Lake, which dominate the western half of the map. Along the river's eastern bluffs, small settlements like Walnut Grove, Indian Spring, and Undercliff sit near the water’s edge, while the town of Florid is established further inland on the agricultural plateau.
65 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1893 · Lacon
USGS Topo · 1:62,500
1893 · Hennepin
USGS Topo · 1:62,500
1893 · Lasalle
USGS Topo · 1:62,500
1909 · Hennepin
USGS Topo · 1:62,500
1911 · La Salle
USGS Topo · 1:62,500
1911 · Hennepin
USGS Topo · 1:62,500
1913 · La Salle
USGS Topo · 1:62,500
1933 · Lacon
USGS Topo · 1:62,500
1934 · Wenona
USGS Topo · 1:48,000
1937 · Lacon
USGS Topo · 1:62,500