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The Umatilla National Forest, in the Blue Mountains of northeast Oregon and southeast Washington, covers an area of 1.4 million acres (570,000 ha; 5,700 km2; 2,200 mi2). In descending order of land area the forest is located in parts of Umatilla, Grant, Columbia, Morrow, Wallowa, Union, Garfield, Asotin, Wheeler, and Walla Walla counties. (Columbia, Garfield, Asotin, and Walla Walla counties are in Washington, while the rest are in Oregon.) More than three-quarters of the forest lies in the state of Oregon. Forest headquarters are located in Pendleton, Oregon. Local ranger district offices are in Heppner and Ukiah in Oregon, as well as in Pomeroy and Walla Walla in Washington.