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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.
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.
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.
Eroded hilltops due to tillage erosion. Tillage erosion is a form of soil erosion occurring in cultivated fields due to the movement of soil by tillage. [1] [2] There is growing evidence that tillage erosion is a major soil erosion process in agricultural lands, surpassing water and wind erosion in many fields all around the world, especially on sloping and hilly lands [3] [4] [5] A signature ...
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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:
Lake Keomah State Park is a state park in Mahaska County, Iowa, United States. To the park's immediate east is Keomah Village and the park is approximately 4 miles (6.4 km) east of Oskaloosa. Lake Keomah State Park is a 366-acre (148 ha) state park that surrounds and includes Lake Keomah. Lake Keomah is an 83-acre (34 ha) reservoir.
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 ...