
Viola Center stands as a focal point in this 1971 survey of the rural landscape where Carroll and Audubon counties meet. The terrain is defined by a dense network of drainage, primarily the East Nishnabotna River which meanders through the western sections of Cameron and Leroy townships. To the east, the headwaters of the South Raccoon River and Beaver Creek carve through the glacial till, illustrating the complex watershed divide characteristic of this part of Iowa.
15 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.
1954 · Omaha
USGS Topo · 1:250,000
1957 · Omaha
USGS Topo · 1:250,000
1957 · Audubon
USGS Topo · 1:62,500
1958 · Omaha
USGS Topo · 1:250,000
1971 · Coon Rapids South
USGS Topo · 1:24,000
1971 · Dedham
USGS Topo · 1:24,000
1971 · Coon Rapids North
USGS Topo · 1:24,000
1971 · Templeton
USGS Topo · 1:24,000
1971 · North Branch
USGS Topo · 1:24,000
1971 · Gray
USGS Topo · 1:24,000