The Sny and a complex network of drainage ditches dominate this stretch of the Mississippi River bottomlands in Pike County. The landscape is defined by its water management systems, including the Pigeon Creek Settling Basin and Walnut Creek Settling Basin, designed to control the flow of the river's tributaries before they reach the main channel. This area reflects a long history of land reclamation and flood control, visible in the straight lines of the Hadley-McCraney Diversion Ditch cutting across the alluvial plain.
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This is the sole edition of this map. No revisions or reprints were ever made.
1925 · Quincy
USGS Topo · 1:62,500
1925 · Liberty
USGS Topo · 1:62,500
1927 · Liberty
USGS Topo · 1:62,500
1931 · Barry
USGS Topo · 1:62,500
1932 · Hannibal
USGS Topo · 1:62,500
1936 · Hannibal
USGS Topo · 1:48,000
1936 · Barry
USGS Topo · 1:48,000
1944 · Barry
USGS Topo · 1:62,500
1944 · Quincy
USGS Topo · 1:62,500
1945 · Hannibal
USGS Topo · 1:62,500