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Dinetah Tablelands

Ecoregion in Navajo Nation Reservation, Colorado Plateau in AZ

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The Dinétah Tablelands ecoregion consists of plateaus, valleys, and deep canyons on Navajo and Hopi tribal land. The region is lower and warmer than the Mesa Highlands (22r). Cretaceous, Jurassic, and Triassic sedimentary rocks occur. Annual precipitation averages 8 to 13 inches and vegetation includes Utah juniper, pinyon pine, Wyoming big sagebrush, cliffrose, Mormon tea, fourwing saltbush, blackbrush, Indian ricegrass, needleandthread, western wheatgrass, galleta, black grama, blue grama, and sand dropseed. Land uses include livestock grazing, firewood and woodlot uses, subsistence hunting and gathering, and wildlife habitat. Coal mining occurs on Black Mesa.

— EPA