Beginning of the Umatilla Army Depot
During its history as a military base, the U.S. Army Depot near Hermiston, Oregon stored, maintained, and demilitarized ammunition. Now closed and transferred to community ownership for economic development, the depot is located on 19,729 acres in Umatilla and Morrow Counties in northeastern Oregon, approximately three miles south of the Columbia River and 180 miles east of Portland. Although explored by the Spanish and English as
