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The John Day River is a tributary of the Columbia River, approximately 284 miles (457 km) long, in northeastern Oregon in the United States. It is known as the Mah-Hah River by the Cayuse people . Undammed along its entire length, the river is the fourth longest free-flowing river in the contiguous United States.
The John Day River is a tributary of the Columbia River, approximately 6 miles (10 km) long, in northwestern Oregon in the United States. The river rises in the Northern Oregon Coast Range in Clatsop County [ 4 ] at 46°08′20″N 123°42′17″W / 46.138889°N 123.704722°W / 46.138889; -123.704722 ( John Day River
The South Fork John Day River is a 60-mile (97 km) tributary of the John Day River in the U.S. state of Oregon.It begins in the Malheur National Forest in Harney County about 25 miles (40 km) north-northwest of Burns and flows generally north to Dayville, where it meets the main stem of the John Day River.
Propelled by steam from a wood-fired boiler, the 40-foot (12 m) craft plied the river from 10 miles (16 km) upstream of Clarno to about 4 miles (6 km) below. After a bridge was constructed at Clarno in 1897, the younger Clarno decided to float the boat down the John Day River to the Columbia River and then down the Columbia to Portland. [n 1]. [3]
Tributaries of the Columbia River and their dammed tributaries, as well as the main stem itself, each have their own list below. The dams are listed in the order as they are found from source to terminus. Many of the dams in the Columbia River watershed were not created for the specific purposes of water storage or flood protection.
The upper reaches of the river flow through the North Fork John Day Wilderness in the Wallowa–Whitman National Forest and the Umatilla National Forest. From its headwaters to its confluence with Camas Creek, the river is part of the National Wild and Scenic River system under the Wild and Scenic Rivers Act of 1968. The upper 27.8 miles (44.7 ...
The Middle Fork John Day River is a 73-mile (117 km) tributary of the North Fork John Day River in the U.S. state of Oregon.It originates in the Blue Mountains of northeast Oregon in the Malheur National Forest near Austin and flows generally west to the North Fork about 18 miles (29 km) above Monument.
John Day Dam is located 28 miles (45 km) east of the city of The Dalles, Oregon, and just below the mouth of the John Day River. The closest town on the Washington side is Goldendale, 20 miles (32 km) north. The closest town on the Oregon side is Rufus. The dam's crest elevation is approximately 570 feet (170 m) above sea level.