The Wallowa River is a tributary of the Grande Ronde River, approximately 30 miles (48 km) long, in northeastern Oregon in the United States. It drains a valley on the Columbia Plateau in the northwest corner of the state north of Wallowa Mountains. It rises in southern Wallowa County, in the Wallowa Mountains in the Eagle Cap Wilderness of the Wallowa-Whitman National Forest. It flows generally northwest through the Wallowa Valley, past the communities of Joseph, Enterprise, and Wallowa. It receives the Minam River from the south at the hamlet of Minam, then flows north another 10 miles (16 km) to join the Grande Ronde along the Wallowa-Union county line approximately 10 miles (16 km) NNE of Elgin. The Grande Ronde River is a tributary of the Snake River, approximately 180 mi (290 km) long, in northeastern Oregon and southeastern Washington in the United States. ... Official language(s) None Capital Largest city Salem Portland Area  Ranked 9th  - Total 98,466 sq. ... The Washington towns of Spokane, Vantage, Yakima and Pasco, and the Oregon town of Pendleton, lie on the Columbia River Plateau. ... The Wallowa Mountains are a mountain range located in the Columbia Plateau of northeastern Oregon in the United States. ... Wallowa County is a county located in the state of Oregon. ... Joseph is a city located in Wallowa County, Oregon. ... Enterprise is a city in, and the county seat of, Wallowa County, Oregon6. ... Wallowa is a city located in Wallowa County, Oregon. ... Union County is a county located in the state of Oregon. ... Elgin is a city located in Union County, Oregon. ...

The Wallowa Valley was home to Chief Joseph's band of the Nez Percé, from which they were expelled in 1877. Chief Joseph Chief Joseph (1840–September 21, 1904) was the chief of the Wal-lam-wat-kain (Wallowa) band of Nez Perce Indians during General Oliver O. Howards attempt to forcibly remove his band and the other non-treaty Indians to a reservation in Idaho. ... Nez Percé warrior on horse, 1910 The Nez Percé or Nez Perce (pronounced as in French, or ) are a tribe of Native Americans who inhabited the Pacific Northwest region of the United States at the time of the Lewis and Clark Expedition. ... 1877 was a common year starting on Monday (see link for calendar). ...