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Unwooded Alkaline Foothills

Ecoregion on Columbia Plateau in OR, ID

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The shrub- and grass-covered Unwooded Alkaline Foothills ecoregion is higher and more rugged than Ecoregion 12a. Sandy, alkaline lacustrine deposits occur unlike in other ecoregions and support a unique flora. Potential natural vegetation is saltbush – greasewood and sagebrush steppe. Today, cheatgrass and crested wheatgrass are also common and the ecoregion is used for livestock grazing. Land use is unlike that of Ecoregions 12a and 12i. Perennial streams are rare and are much less common than in Ecoregion 12f.

— EPA

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