Colwell serves as the primary hub for this agricultural portion of Floyd County, where the straight-line precision of the Midwest section grid is defined by routes like Colwell Ave and 1st St. The landscape is a study in Iowa's critical drainage networks, anchored by the meandering Wapsipinicon River to the east and the Little Cedar River clipping the southwest corner. The transition from active farmland to preserved habitat is visible at the Elma Wildlife Area along the northern border. Smaller settlements like Nilesville appear as modest clusters along Victory Ave, illustrating the historical distribution of rural communities. The map highlights the intersection of local infrastructure and natural waterways, including several branches of Beaver Cr that feed into the larger river systems, demonstrating how the terrain dictates the placement of rural roads like Mitchell Line St.
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This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Mason City
USGS Topo · 1:250,000
1957 · Mason City
USGS Topo · 1:250,000
1958 · Mason City
USGS Topo · 1:250,000
1971 · Charles City
USGS Topo · 1:24,000
1971 · Bassett
USGS Topo · 1:24,000
1971 · Colwell
USGS Topo · 1:24,000
1971 · Floyd
USGS Topo · 1:24,000
1972 · New Haven
USGS Topo · 1:24,000
1972 · Riceville
USGS Topo · 1:24,000
1972 · Ionia
USGS Topo · 1:24,000