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Rocky Mountain Front Foothill Potholes

Ecoregion in MT

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The Rocky Mountain Front Foothill Potholes (42q) ecoregion lies below glaciated mountain canyons and is composed of hills, hummocky moraines, outwash plains, terraces, and fans. It is covered by extensive Quaternary glacial drift and contains many wildlife- rich wetlands and pothole lakes. The potential natural vegetation is mapped as mostly foothills prairie. Shrub- and tree-covered, mountain-fed streams descend into Ecoregion 43q and both subirrigated and wetland areas also occur. Ecoregion 43q receives more precipitation than the plains below and less than the mountains above. Chinook frequency exceeds 200 per century. Grazing, gravel quarries, and recreation occur and ranches are common.

— EPA

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