The Merced River, in the central part of the U.S. state of California, is a 145-mile (233 km)-long tributary of the San Joaquin River flowing from the Sierra Nevada into the San Joaquin Valley. It is most well known for its swift and steep course through the southern part of Yosemite National Park, where it is the primary watercourse flowing through Yosemite Valley. The river's character changes dramatically once it reaches the plains of the agricultural San Joaquin Valley, where it becomes a slow-moving meandering stream.
The Salt River is a river in Gila and Maricopa counties in Arizona, United States, that is the largest tributary of the Gila River. The river is about 200 miles (320 km) long. Its drainage basin covers about 13,700 square miles (35,000 km2). The longest of the Salt River's many tributaries is the 195-mile (314 km) Verde River. The Salt's headwaters tributaries, the Black River and East Fork, increase the river's total length to about 300 miles (480 km). The name Salt River comes from the river's course over large salt deposits shortly after the merging of the White and Black Rivers.
The West Branch Delaware River is one of two branches that form the Delaware River. It is approximately 90 mi (144 km) long, and flows through the U.S. states of New York and Pennsylvania. It winds through a mountainous area of New York in the western Catskill Mountains for most of its course, before joining the East Branch along the northeast border of Pennsylvania with New York. Midway or so it is empounded by the Cannonsville Dam to form the Cannonsville Reservoir, both part of the New York City water supply system for delivering drinking water to the City.
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 Hoh River is a river of the Pacific Northwest, located on the Olympic Peninsula in the U.S. state of Washington. About 56 miles (90 km) long, the Hoh River originates at the snout of Hoh Glacier on Mount Olympus and flows westward through the Olympic Mountains of Olympic National Park and Olympic National Forest, then through foothills in a broad valley, emptying into the Pacific Ocean at the Hoh Indian Reservation. The final portion of the Hoh River's course marks the boundary between the south coastal segment of Olympic National Park and the Hoh Indian Reservation.
The Skokomish River is a river in Mason County, Washington, United States. It is the largest river flowing into Hood Canal, a western arm of Puget Sound. From its source at the confluence of the North and South Forks the main stem Skokomish River is approximately 9 miles (14 km) long. The longer South Fork Skokomish River is 40 miles (64 km), making the length of the whole river via its longest tributary about 49 miles (79 km). The North Fork Skokomish River is approximately 34 miles (55 km) long. A significant part of the Skokomish River's watershed is within Olympic National Forest and Olympic National Park.
Schoharie Creek is a river in New York that flows north 93 miles (150 km) from the foot of Indian Head Mountain in the Catskills through the Schoharie Valley to the Mohawk River. It is twice impounded north of Prattsville to create New York City's Schoharie Reservoir and the Blenheim-Gilboa Power Project.
The Sacandaga River is a 64-mile-long (103 km) river in the northern part of New York in the United States. Its name comes from the Native American Sa-chen-da'-ga, meaning "overflowed lands".
The Big River is a tributary of the Meramec River in east-central Missouri. The river rises in western Iron County near the summit of Johnson Mountain just north of Missouri Route 32 and approximately 3.5 miles southeast of the community of Enough. It flows through Washington, Saint Francois, and Jefferson counties. It forms part of the boundary between Jefferson and Saint Francois counties and also part of the boundary between Jefferson and Washington counties. It empties into the Meramec River opposite Eureka where the Meramec forms the border between Jefferson and Saint Louis counties. The river flows through Washington State Park, St. Francois State Park, and the Lead Belt mining district. The elevation of the river at its source is approximately 1,300 feet (400 m) above sea level and at its mouth about 400 feet (120 m). The length of the river is approximately 145 miles (233 km), while the airline distance between source and mouth is about 56 miles (90 km). Its watershed area is 955 square miles (2,470 km2).
Big Wapwallopen Creek is a tributary of the Susquehanna River in Luzerne County, Pennsylvania, in the United States. It is approximately 23 miles (37 km) long and flows through Bear Creek Township, Fairview Township, Rice Township, Wright Township, Dorrance Township, Hollenback Township, Nescopeck Township, and Conyngham Township. The watershed of the creek has an area of 53.2 square miles (138 km2). The creek has three named tributaries: Balliet Run, Watering Run, and Bow Creek. The creek is designated as a Coldwater Fishery and a Migratory Fishery and is also Class A Wild Trout Waters for part of its length. However, a portion is considered to be impaired by organic enrichment and/or low levels of dissolved oxygen and its pH ranges from moderately acidic to slightly alkaline.
The Lochsa River is in the northwestern United States, in the mountains of north central Idaho. It is one of two primary tributaries of the Middle Fork of the Clearwater River in the Clearwater National Forest. Lochsa is a Nez Perce word meaning rough water. The Salish name is Ep Smɫí, "It Has Salmon."
The Rio Puerco is a tributary of the Rio Grande in the U.S. state of New Mexico. From its source on the west side of the Nacimiento Mountains, it flows about 230 miles (370 km), generally south to join the Rio Grande about 20 miles (32 km) south of Belen and about 50 miles (80 km) south of Albuquerque. Its drainage basin is about 7,350 square miles (19,000 km2) large, of which probably about 1,130 square miles (2,900 km2) are noncontributing.
The Sol Duc River is a river in the U.S. state of Washington. About 78 miles (126 km) long, it flows west through the northwest part of the Olympic Peninsula, from the Olympic Mountains of Olympic National Park and Olympic National Forest, then through the broad Sol Duc Valley. Near the Pacific Ocean the Sol Duc River joins the Bogachiel River, forming the Quillayute River, which flows about 4 miles (6.4 km) to the Pacific Ocean at La Push. Although the Quillayute River is short, its large tributary rivers—the Sol Duc, Bogachiel, Calawah, and Dickey Rivers—drain the largest watershed of the northern Olympic Peninsula, 629 square miles (1,630 km2). The Sol Duc's watershed is the largest of the Quillayute's tributaries, at 219 square miles (570 km2).
The Rogue River in the U.S. state of Oregon begins at Boundary Springs on the border between Klamath and Douglas counties near the northern edge of Crater Lake National Park. The Rogue River flows generally west for 215 miles (346 km) from the Cascade Range through the Rogue River – Siskiyou National Forest and the Klamath Mountains to the Pacific Ocean at Gold Beach. Communities along its course include Union Creek, Prospect, Trail, Shady Cove, Gold Hill, and Rogue River, all in Jackson County; Grants Pass, and Galice in Josephine County, and Agness, Wedderburn and Gold Beach in Curry County. Significant tributaries include the South Fork Rogue River, Elk Creek, Bear Creek, the Applegate River, and the Illinois River. Arising at 5,320 feet (1,622 m) above sea level, the river loses more than 1 mile (1.6 km) in elevation by the time it reaches the Pacific.
The South Fork Eel River is the largest tributary of the Eel River in north-central California in the United States. The river flows 105 miles (169 km) north from Laytonville to Dyerville/Founders' Grove where it joins the Eel River. The South Fork drains a long and narrow portion of the Coast Range of California in parts of Mendocino and Humboldt counties. U.S. Route 101 follows the river for much of its length.
The North Fork Clearwater River is a major tributary of the Clearwater River in the U.S. state of Idaho. From its headwaters in the Bitterroot Mountains of eastern Idaho, it flows 135 miles (217 km) westward and is dammed by the Dworshak Dam just above its mouth in north-central Idaho. Draining a rugged watershed of 2,462 square miles (6,380 km2), the river has an average flow of over 5,600 cubic feet per second (160 m3/s), accounting for a third of the discharge from the Clearwater basin. The river drains parts of Clearwater, Shoshone, Latah, and Idaho counties. Most of the watershed is managed by the U.S. Forest Service. Some of the fish of the river include westslope cutthroat trout, rainbow trout, mountain whitefish, and the threatened bull trout. It also has smallmouth bass and a kokanee salmon run, both from Dworshak Reservoir. The North Fork drainage is home to grizzly bears, cougars, deer, moose, black bear, elk, grey wolves, and osprey. The river used to have a large steelhead run before the implementation of Dworshak Dam. The North Fork of the Clearwater is located within the Clearwater National Forest
The Muddy River is a stream, about 29 miles (47 km) long, southeast of Mount St. Helens in the U.S. state of Washington. The Muddy River flows south–southeast and joins the Lewis River just above the Swift Reservoir. The Lewis River flows west and is a tributary to the Columbia River. The east flank of Mount St. Helens is within the watershed of Muddy Creek.
Hayfork Creek is a tributary of the South Fork Trinity River in Northern California in the United States. At over 50 miles (80 km) long, it is the river's longest tributary and is one of the southernmost streams in the Klamath Basin. It winds through a generally steep and narrow course north, then west through the forested Klamath Mountains, but also passes through the Hayfork and Hyampom Valleys, which are the primary agricultural regions of Trinity County.
Butler Creek is a tributary of Nine Partners Creek in Susquehanna County, Pennsylvania, in the United States. It is approximately 12 miles (19 km) long and flows through Jackson Township, Gibson Township, and Harford Township. The watershed of the creek has an area of 20.6 square miles (53 km2). The creek has one named tributary, which is known as Little Butler Creek, and is not designated as an impaired waterbody. The creek's valley is a "beaded valley", at least in its upper reaches, and has thick deposits of till in its valley.
North Branch Mehoopany Creek is a tributary of Mehoopany Creek in Bradford County, Sullivan County, and Wyoming County, in Pennsylvania, in the United States. It is approximately 14 miles (23 km) long and flows through Wilmot Township in Bradford County, Colley Township in Sullivan County, and North Branch Township and Forkston Township. The watershed of the creek has an area of 40.0 square miles (104 km2). The creek has eight named direct tributaries, including hollows. In the 1940s and 1950s, the average discharge for September was found to be just 6.8 cubic feet per second (0.19 m3/s), but was found to be over 100 cubic feet per second (2.8 m3/s) for July and August.
