The Maple River valley dictates the geography of this Monona County landscape, cutting a wide diagonal path through the loess hills of western Iowa. The village of Castana sits tucked into the eastern bluffs where Cottonwood Cr meets the main river valley, while Turin occupies the flatlands further south near the confluence with the Little Sioux River. This area is defined by a series of deeply incised drainage patterns, represented by features like Nutt Hollow, Dutch Hollow, and Gingles Hollow, which separate prominent rises such as Durr Hill and Granger Hill.
51 named features on this map. Tap any name to fly to it.
Don’t see what you’re looking for? This feature index may not catch every label — zoom into the map to look around manually.
This is the sole edition of this map. No revisions or reprints were ever made.
1954 · Omaha
USGS Topo · 1:250,000
1954 · Fort Dodge
USGS Topo · 1:250,000
1955 · Sioux City
USGS Topo · 1:250,000
1955 · Fremont
USGS Topo · 1:250,000
1957 · Fremont
USGS Topo · 1:250,000
1957 · Omaha
USGS Topo · 1:250,000
1957 · Fort Dodge
USGS Topo · 1:250,000
1958 · Sioux City
USGS Topo · 1:250,000
1958 · Omaha
USGS Topo · 1:250,000
1958 · Fremont
USGS Topo · 1:250,000