
The Thompson River and its many tributaries carve a rolling agricultural landscape at the junction of four Iowa counties: Union, Clarke, Ringgold, and Decatur. This 1981 survey by the U.S. Geological Survey and the Iowa Geological Survey shows a deeply rural region organized around its waterways, with Fourmile Creek, Sevenmile Creek, and Twelvemile Creek providing the primary drainage. The map provides a detailed look at rural infrastructure in the late 1970s, featuring localized landmarks such as Spring Valley Lake and small country churches including Pleasant Valley Ch and Oak Hill Ch. Genealogists and local historians can pinpoint family burial sites at Otterbein Cem and Cornwall Cem, while industry is represented by scattered Quarry operations. The division of the land into townships like Jones, Thompson, and Doyle reflects the enduring survey grid that shaped southern Iowa settlement.
22 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.
1951 · Osceola
USGS Topo · 1:62,500
1951 · Afton
USGS Topo · 1:62,500
1954 · Centerville
USGS Topo · 1:250,000
1954 · Omaha
USGS Topo · 1:250,000
1954 · Des Moines
USGS Topo · 1:250,000
1955 · Nebraska City
USGS Topo · 1:250,000
1956 · Des Moines
USGS Topo · 1:250,000
1957 · Des Moines
USGS Topo · 1:250,000
1957 · Nebraska City
USGS Topo · 1:250,000
1957 · Omaha
USGS Topo · 1:250,000