The Red River is a major river in the Southern United States. It was named for its reddish water color from passing through red-bed country in its watershed. It also is known as the Red River of the South to distinguish it from the Red River of the North, which flows between Minnesota and North Dakota into the Canadian province of Manitoba. Although once a tributary of the Mississippi River, the Red River now is a tributary of the Atchafalaya River, a distributary of the Mississippi that flows separately into the Gulf of Mexico. This confluence is connected to the Mississippi River by the Old River Control Structure.
The French Broad River is a river in the U.S. states of North Carolina and Tennessee. It flows 218 miles (351 km) from near the town of Rosman in Transylvania County, North Carolina, into Tennessee, where its confluence with the Holston River at Knoxville forms the beginning of the Tennessee River. The river flows through the counties of Transylvania, Buncombe, Henderson, and Madison in North Carolina, and Cocke, Jefferson, Sevier, and Knox in Tennessee. It drains large portions of the Pisgah National Forest and the Cherokee National Forest.
The Shenandoah River is the principal tributary of the Potomac River, 55.6 miles (89.5 km) long with two forks approximately 100 miles (160 km) long each, in the U.S. states of Virginia and West Virginia. The river and its tributaries drain the central and lower Shenandoah Valley and the Page Valley in the Appalachians on the west side of the Blue Ridge Mountains, in northwestern Virginia and the eastern panhandle of West Virginia. There is a hydroelectric plant along the Shenandoah River constructed in 2014 by Dominion.
The Holston River is a 136-mile (219 km) river that flows from Kingsport, Tennessee, to Knoxville, Tennessee. Along with its three major forks, it comprises a major river system that drains much of northeastern Tennessee, southwestern Virginia, and northwestern North Carolina. The Holston's confluence with the French Broad River at Knoxville marks the beginning of the Tennessee River.
The Feather River is the principal tributary of the Sacramento River, in the Sacramento Valley of Northern California. The river's main stem is about 73 miles (117 km) long. Its length to its most distant headwater tributary is just over 210 miles (340 km). The main stem Feather River begins in Lake Oroville, where its four long tributary forks join—the South Fork, Middle Fork, North Fork, and West Branch Feather Rivers. These and other tributaries drain part of the northern Sierra Nevada, and the extreme southern Cascades, as well as a small portion of the Sacramento Valley. The total drainage basin is about 6,200 square miles (16,000 km2), with approximately 3,604 square miles (9,330 km2) above Lake Oroville.
The New River is a 58.7-mile-long (94.5 km) tributary of the Big South Fork of the Cumberland River in the U.S. state of Tennessee. Via the Big South Fork and the Cumberland and Ohio rivers, it is part of the Mississippi River watershed.
The South Branch Potomac River has its headwaters in northwestern Highland County, Virginia, near Hightown along the eastern edge of the Allegheny Front. After a river distance of 139 miles (224 km), the mouth lies east of Green Spring, Hampshire County, West Virginia, where it meets the North Branch Potomac River to form the Potomac.
The South Fork New River is a river in the U.S. state of North Carolina.
The Little Cacapon River is a 25.1-mile-long (40.4 km) free-flowing tributary of the Potomac River in the center of Hampshire County, West Virginia. Via the Potomac River, its waters are part of the Chesapeake Bay watershed, leading to the Atlantic Ocean. The Little Cacapon enters the Potomac at an elevation of 499 feet (152 m) near the community of Little Cacapon. For the majority of its course the Little Cacapon is a shallow non-navigable stream. It has been historically referred to as both Little Cacapehon and Little Capecaphon. The name is pronounced kə-KAY-pən or KAY-pən.
Lunice Creek is a 7.3-mile-long (11.7 km) tributary of the South Branch Potomac River, belonging to the Potomac River and Chesapeake Bay watersheds. The creek is located in Grant County, West Virginia. Lunice Creek is created by its North and South Forks and empties into the South Branch at Petersburg.
The Cass River is a 61.5-mile-long (99.0 km) river in the Thumb region of the U.S. state of Michigan. It drains large portions of Sanilac and Tuscola counties and smaller portions of Genesee, Huron, Lapeer, and Saginaw counties.
The Plum River is a tributary of the Mississippi River, about 46.6 miles (75.0 km) long, in northwestern Illinois in the United States. It rises in Jo Daviess County and flows generally south-southwestwardly into Carroll County, where it joins the Mississippi at Savanna. Among its several short tributaries are:
The North Fork River or the North Fork of White River is a 109-mile-long (175 km) tributary of the White River, into which it flows near Norfork, Arkansas.
Mill Creek is a 5.3-mile-long (8.5 km) tributary stream of the North Fork South Branch Potomac River in Pendleton County, West Virginia. Mill Creek rises on the western flanks of North Fork Mountain and from there, flows north through Germany Valley. Its confluence with the North Fork lies at Hinkle Gap between Germany and Harman Knobs.
The Mayo River is a tributary of the Dan River, which in turn is a tributary of the Roanoke River. All three rivers flow through the U.S. states of Virginia and North Carolina. It is named for Major William Mayo.
The St. Lucie River is a 35-mile-long (56 km) estuary linked to a coastal river system in St. Lucie and Martin counties in the U.S. state of Florida. The St. Lucie River and St. Lucie Estuary are an "ecological jewel" of the Treasure Coast, central to the health and well-being of the surrounding communities. The river is part of the larger Indian River Lagoon system, the most diverse estuarine environment in North America with more than 4,000 plant and animal species, including manatees, oysters, dolphins, sea turtles and seahorses.
The Pioneer Mountains are a mountain range in the U.S. state of Idaho, spanning Blaine, Butte and Custer counties. The range is bounded on the west by the Big Wood River, Trail Creek and Summit Creek, and the North Fork Big Lost River, on the north and east by the East Fork Big Lost River, Left Fork Cherry Creek, Cherry Creek, Dry Fork Creek, Saint Louis Canyon, and Champagne Creek, and on the south by the Snake River Plain. The mountains are located within Sawtooth and Challis National Forests.
The East Branch South Fork Eel River, a tributary of the South Fork Eel River, is formed by the confluence of Cruso Cabin Creek and Elkhorn Creek, in Mendocino County in the U.S. state of California. The river is roughly 25 miles (40 km) long, meandering west to its confluence with the South Fork Eel at Benbow State Recreation Area. Major tributaries of the East Branch include Buck Mountain Creek, Squaw Creek, Rays Creek, and Tom Long Creek. The river flows west, turns north, and flows west again, through rugged terrain in the Coast Range of California. The East Branch is the South Fork Eel's largest tributary.
