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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.
Soil erosion may be a slow process that continues relatively unnoticed, or it may occur at an alarming rate causing a serious loss of topsoil. The loss of soil from farmland may be reflected in reduced crop production potential, lower surface water quality and damaged drainage networks. Soil erosion could also cause sinkholes.
Topography of Iowa, with counties and major streams Landforms of Iowa, based on Prior (1991) and Calvin (1904), with major rivers and streams. Despite popular perception, Iowa is generally not flat; most of the state consists of rolling hills. Prior [19] divides Iowa into eight landforms based on glaciation, soils, topography, and river drainage:
A well-defined band of pahas runs between Mount Vernon and Martelle, Iowa and is crossed by Iowa Highway 1. Most are in Benton, Linn, Johnson and Jones counties. [citation needed] Casey's Paha State Preserve in Hickory Hills County Park, Tama County, Iowa preserves the southeast end of a 2-mile (3.2 km) long paha. [12]
In, "Geology of East-Central Iowa", R.R. Anderson (ed.), Iowa Geological Survey,42nd Annual Tri-State Geological Field Conference, Guidebook, pp. 2.2–2.94. Iannicelli, M. (2010). Evolution of the Driftless Area and contiguous regions of midwestern USA through Pleistocene periglacial processes.
The latest attempt to diminish Iowans’ access to public parks and wildlife areas has taken the form of Senate Study Bill 3129 and House File 2104, which would restrict Iowa DNR and nonprofit ...
When traffic picks up during state parks' busy month, the Iowa DNR will use seasonal officers to help enforce laws. From April 15 to October 15 the seasonal officers will serve as park managers ...
Soil erosion is the main factor for soil degradation and is due to several mechanisms: water erosion, wind erosion, chemical degradation and physical degradation. Erosion can be influenced by human activity. For example, roads which increase impermeable surfaces lead to streaming and ground loss.