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Rolling Sagebrush Steppe

Ecoregion in Rocky Mountains in WY, UT, CO

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The semiarid Rolling Sagebrush Steppe is a vast region of rolling plains, alluvial and outwash fans, hills, cuestas, mesas, and terraces. This region is less hilly than the Foothill Shrublands and Low Mountains (18d) ecoregion. Annual precipitation of 10 to 20 inches varies with elevation and proximity to mountains. The sagebrush steppe natural vegetation includes western wheatgrass, needle-and-thread, blue grama, Sandberg bluegrass, Junegrass, rabbitbrush, fringed sage, Wyoming big sagebrush, silver and black sagebrush in lowlands, and mountain big sagebrush in the higher elevations. Land use is mainly rangeland, with some areas of cropland along the Yampa River in hay, wheat, barley, or oats. Oil, gas, and coal deposits are scattered throughout the region.

— EPA

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