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Prairie Coteau

Ecoregion in SD, MN, ND

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In Minnesota this ecoregion has a small area which is part of the coteau complex consisting of regions 46k, 46l, and 46m. The gently undulating, hummocky landscape has some lakes, and streams draining both northeast to the escarpment (46l) and southwest to the Big Sioux Basin (46m). Corn and soybeans and some pasture are grown on the loamy, well-drained loess soils, mostly moist prairie Udolls. The presettlement vegetation of tallgrass prairie occupied the drift complex of the Bemis moraine of the Des Moines Lobe and the outwash areas in stream channels. About 65% of this ecoregion was corn and soybeans in 2013, and another almost 20% pasture or grassland.

— EPA

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Ecoregion