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  2. Geography of Iowa - Wikipedia

    en.wikipedia.org/wiki/Geography_of_Iowa

    Iowa annual rainfall in inches Mississippi River alluvial plain from SIDP bluffs north of Kingston, Iowa. As in most of the U.S., surface water in Iowa is never safe to drink untreated, contamination by agricultural runoff including nitrates, herbicides, pesticides, and animal waste is common, though the Clean Water Act has helped.

  3. Western Corn Belt Plains - Wikipedia

    en.wikipedia.org/wiki/Western_Corn_Belt_Plains

    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.

  4. Environment of Iowa - Wikipedia

    en.wikipedia.org/wiki/Environment_of_Iowa

    The northwest Iowa plains are rolling hills consisting of eroded soils developed since pre-Wisconsinan glaciation, but with significant amounts of loess. The Missouri alluvial plain is perhaps the only truly flat region of Iowa, the Missouri Alluvial Plain contains areas of terraces, sloughs, and oxbows.

  5. Alluvial plain - Wikipedia

    en.wikipedia.org/wiki/Alluvial_plain

    Use of "alluvial plain" as a general, informal term for a broad flood plain or a low-gradient delta is explicitly discouraged. The NCSS glossary instead suggests "flood plain". [1] Alluvial plains have similar traits to a river delta; however, the river delta will flow into a larger body of water. Alluvial plains generally lack this.

  6. Driftless Area - Wikipedia

    en.wikipedia.org/wiki/Driftless_Area

    Autumn in the Driftless Area of Cross Plains, Wisconsin. The Driftless Area, also known as Bluff Country and the Paleozoic Plateau, is a topographical and cultural region in the Midwestern United States [1] that comprises southwestern Wisconsin, southeastern Minnesota, northeastern Iowa, and the extreme northwestern corner of Illinois.

  7. Iowa - Wikipedia

    en.wikipedia.org/wiki/Iowa

    Iowa (/ ˈ aɪ. ə w ə / ⓘ EYE-ə-wə) [6] [7] [8] is a state in the upper Midwestern region of the United States.It borders the Mississippi River to the east and the Missouri River and Big Sioux River to the west; Wisconsin to the northeast, Illinois to the east and southeast, Missouri to the south, Nebraska to the west, South Dakota to the northwest, and Minnesota to the north.

  8. Physiographic regions of the United States - Wikipedia

    en.wikipedia.org/wiki/Physiographic_regions_of...

    USGS map colored by paleogeological areas and demarcating the sections of the U.S. physiographic regions: Laurentian Upland (area 1), Atlantic Plain (2-3), Appalachian Highlands (4-10), Interior Plains (11-13), Interior Highlands (14-15), Rocky Mountain System (16-19), Intermontane Plateaus (20-22), & Pacific Mountain System (23-25) The legend ...

  9. File:USA Iowa relief location map.svg - Wikipedia

    en.wikipedia.org/wiki/File:USA_Iowa_relief...

    Mòdul:Location map/data/USA Iowa; Mòdul:Location map/data/USA Iowa/ús; Usage on de.wikipedia.org WOI-Sendemast; Des Moines Hearst-Argyle Television Tower Alleman;