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Simplified map of Iowa Bedrock formations of Iowa The geography of Iowa includes the study of bedrock, landforms, rivers, geology, paleontology and urbanisation of the U.S. state of Iowa . The state covers an area of 56,272.81 sq mi (145,746 km 2 ).
The Natural Resources Conservation Service divides Iowa into 23 soil regions. In general, soils of southern, eastern, and western Iowa are loess-derived, while soils of northern and central Iowa are till-derived. Most level areas of Iowa have soils highly suitable for agriculture, making Iowa one of the most productive farming regions of the world.
Polk County is the most densely populated county at 864/sq mi (333.5/km 2), an increase in density from 2010 when it was 655.5/sq mi (253.08/km 2). [7] Polk County contains the state's capital and largest city, Des Moines. In addition, Iowa has one of the smallest percentages of counties whose boundaries are dictated by natural means, the vast ...
The county that includes Odebolt is home to about 46,000 cattle — more than four times the human population of 9,800, according to numbers from the U.S. Department of Agriculture.
The Northwest Iowa Loess Prairies ecoregion is a gently undulating plain with a moderate to thick layer of loess. It is the highest and driest region of the Western Corn Belt Plains, as it rises to meet the Northern Glaciated Plains (46) of the Dakotas.
1911 map showing extent of the Driftless Area as well as the Driftless region in Minnesota and Iowa Typical terrain of the Driftless Area as viewed from Wildcat Mountain State Park in Vernon County, Wisconsin Glacial map of the Great Lakes region; the dark area near left center was not covered by drift. Areas with diagonal hatching were ...
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Percy Edgar Brown (1885–1937) was a soil scientist at Iowa State University, Ames, Iowa. Brown is perhaps best known for the book, Soils of Iowa, which was published in 1936. The classic map, "Landform Regions of Iowa," was originally published in this text. [1] Landform Regions of Iowa