White River Badlands 43i. Keya Paha Tablelands 43j. Moreau Prairie 43k. It is a semiarid rolling plain of shale, siltstone, and sandstone punctuated by occasional buttes and badlands. Native grasslands persist in areas of steep or broken topography, but they have been largely replaced by spring wheat and alfalfa over most of the ecoregion.
Agriculture is limited by erratic precipitation patterns and limited opportunities for irrigation.
T he Sagebrush Steppe occurs on the dry western edge of North and South Dakota where rainfall rarely exceeds 14 inches per year. The region is characterized by low human population, minimal cultivation, and relatively high concentrations of wildlife. Land Use and Land Cover Cattle grazing and wildlife habitat. Grassland and shrub cover.