Marys River is a 40-mile (64 km) tributary of the Willamette River in the U.S. state of Oregon. From its source at the confluence of its east and west forks near Summit, it flows generally southeast from the Central Oregon Coast Range to Corvallis.
The Sixes River flows about 31 miles (50 km) through coastal forests in southwestern Oregon in the United States. It drains a rugged region of the Klamath Mountains along the Pacific north of Port Orford.
The Youngs River is a tributary of the Columbia River, approximately 27 miles (43 km) long, in northwest Oregon in the United States. It drains part of the Northern Oregon Coast Range in the extreme northwest corner of state, entering the Columbia via Youngs Bay just approximately 10 miles (16 km) from its mouth.
The Clatskanie River is a tributary of the Columbia River, approximately 25 miles (40 km) long, in northwestern Oregon in the United States. It drains a timber-producing area in the foothills of the Northern Oregon Coast Range north-northwest of Portland.
The Donner und Blitzen River is a river on the eastern Oregon high desert that drains a relatively arid basin, the southern portion of Harney Basin, from roughly 20 to 80 miles south-southeast of Burns including Malheur National Wildlife Refuge. Though much of its course is marsh, it offers scenic glaciated canyons, unique ecosystems, and exceptional wild trout fisheries. Named by soldiers of German origin, the Donner und Blitzen River translates as "thunder and lightning". The name usually brings to mind two of Santa Claus's reindeer, but the river is named for a thunderstorm the soldiers experienced as they crossed the river; dry lightning is an almost daily occurrence in the region during certain times of the year.
The Umatilla River is an 89-mile (143 km) tributary of the Columbia River in northern Umatilla County, Oregon, United States. Draining a basin of 2,450 square miles (6,300 km2), it enters the Columbia near the city of Umatilla in the northeastern part of the state. In downstream order, beginning at the headwaters, major tributaries of the Umatilla River are the North Fork Umatilla River and the South Fork Umatilla River, then Meacham, McKay, Birch, and Butter creeks.
The Burnt River is a 98-mile-long (158 km) tributary of the Snake River in eastern Oregon, United States. It enters the Snake near Huntington at a point upstream of the Powder River and downstream of the Malheur River, slightly more than 327 miles (526 km) from the Snake's confluence with the Columbia River. Draining 1,090 square miles (2,800 km2), it flows predominantly west to east.
New Princeton is an unincorporated community in Harney County, in the U.S. state of Oregon. It is along Oregon Route 78 between Burns and Burns Junction at an elevation of 4,111 feet (1,253 m) above sea level. The South Fork Malheur River begins near Round Mountain, southeast of New Princeton.
The North Fork Malheur River is a 59-mile (95 km) tributary of the Malheur River in eastern Oregon in the United States. Rising in Big Cow Burn in the Blue Mountains, it flows generally south to join the larger river at Juntura. The upper 25.5 miles (41.0 km) of the river have been designated Wild and Scenic. This part of the river basin offers camping, hiking, and fishing opportunities in a remote forest setting. The lower river passes through Beulah Reservoir, which stores water for irrigation and has facilities for boaters.
The Pistol River is a coastal stream that meanders for 21 miles (34 km) through the Southern Oregon Coast Range to the Pacific Ocean near the unincorporated community of Pistol River in the U.S. state of Oregon. Flowing generally southwest from its origin near Sugarloaf Mountain in the Siskiyou National Forest, the river enters the sea at Pistol River State Scenic Viewpoint, 10 miles (16 km) south of Gold Beach. The river received its name after pioneer James Mace lost his pistol in it in 1853.
Kiger Creek is a tributary of Swamp Creek in Harney County in the U.S. state of Oregon. It originates on Steens Mountain and flows generally north through Kiger Gorge to meet Swamp Creek near the unincorporated community of Diamond. The combined streams flow into Diamond Swamp and the Malheur National Wildlife Refuge.
The North Fork Owyhee River is a tributary, about 30 miles (48 km) long, of the Owyhee River in Malheur County, Oregon, and Owyhee County, Idaho, in the United States. It begins on the east flank of the Owyhee Mountains in Idaho and flows generally southwest to meet the main stem at Three Forks, Oregon, 161 miles (259 km) above the confluence of the larger river with the Snake River.
The Middle Fork Owyhee River is a tributary of the North Fork Owyhee River in Malheur County, Oregon, and Owyhee County, Idaho, in the United States. It forms along Juniper Mountain, south of the Owyhee Mountains in Idaho. From its headwaters, it flows southwest then curves northwest to and beyond the Idaho–Oregon border, then turns north to meet the North Fork at Three Forks, Oregon. The confluence is less than a mile upstream from the North Fork's confluence with the Owyhee River. Below Three Forks, the main stem Owyhee flows 161 miles (259 km) to empty into the Snake River.
The South Fork Umatilla River is a tributary of the Umatilla River in Umatilla County in the U.S. state of Oregon. Its headwaters lie in the Umatilla National Forest in the Blue Mountains of northeastern Oregon near Pileup Saddle and Black Mountain. The South Fork flows generally north between Goodman Ridge and Bobsled Ridge to meet the North Fork Umatilla River near Graves Butte. Together the forks form the main stem Umatilla.
The Lake Fork West Owyhee River is a short tributary of the West Little Owyhee River in the U.S. state of Oregon. The river begins near Cat, Bend, and Pedroli springs near the eastern boundary of the Fort McDermitt Indian Reservation in southern Malheur County. It flows generally northeast to meet the larger river in Louse Canyon. The Lake Fork has no named tributaries.
Deadwood Creek is a tributary of Lake Creek in the Siuslaw River basin in Lane County in the U.S. state of Oregon. Beginning near Taylor Butte in the Central Oregon Coast Range, it meanders generally southwest through the Siuslaw National Forest to meet the larger creek at the rural community of Deadwood. This is 5 miles (8 km) from Lake Creek's confluence with the river near Swisshome and 34 miles (55 km) by water from the Siuslaw River's mouth on the Pacific Ocean at Florence.
Myrtle Creek is a short tributary of the South Umpqua River in Douglas County in the U.S. state of Oregon. Its main stem, formed by the confluence of two forks just south of the city of Myrtle Creek, is only about 1 mile (1.6 km) long. Its only named tributaries are the two forks, North Myrtle Creek and South Myrtle Creek, each of which is much longer than the main stem.
Lost Creek is a tributary of the Middle Fork Willamette River in the U.S. state of Oregon. It begins in the Cascade Range foothills between Dorena Lake and Lookout Point Lake and flows generally north to meet the river downstream of Lowell. Along the way, it passes by the rural community of Dexter, then under Oregon Route 58, and through part of Elijah Bristow State Park. Named tributaries of Lost Creek from source to mouth are Guiley, Gossage, Carr, Middle, Anthony, and Wagner creeks.
Horse Creek is a tributary of the McKenzie River in near the unincorporated community of McKenzie Bridge in Lane County in the U.S. state of Oregon. It begins in the Cascade Range in the Three Sisters Wilderness of the Willamette National Forest. Its headwaters are near the Deschutes County border and the Pacific Crest Trail. It flows generally northwest to meet the river about 65 miles (105 km) upstream of the McKenzie's confluence with the Willamette River.
