The Illinois River serves as the central artery for this region, carving a wide valley that defines the boundaries of Bureau, Putnam, and Marshall Counties. Along its western banks, the expansive waters of Senachwine Lake and Swan Lake dominate the floodplain, while further south, Sawmill Lake sits near the town of Henry. These large backwater lakes and their associated wetlands illustrate the river's historical influence on the landscape's hydrology and settlement patterns.
55 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