Question: Cottonwood Creek is known for the runs of what genus of Pacific salmon?

full_context: Document 1: Salmo: Salmo is a genus of fish in the salmon family Salmonidae that includes the European species of salmon and trout, among them the familiar Atlantic salmon "Salmo salar" and the brown trout "Salmo trutta". The natural distribution of "Salmo" also extends to Northern Africa and to Western Asia around the Black Sea basin. The single "Salmo" species naturally found in the Atlantic North America is the Atlantic salmon, whereas the salmon and trout of the Pacific basin belong to another genus, "Oncorhynchus". The generic name "Salmo" derives from the Latin "salmō" (salmon). The number of distinct species and subspecies in "Salmo" is a debated issue. Atlantic salmon and brown trout are widespread species, while most of the other taxa are narrowly distributed forms endemic to single watersheds.
Document 2: Ptychocheilus: Squawfish or pikeminnows are cyprinid fish of the genus Ptychocheilus consisting of four species native to western North America. Voracious predators, they are considered an "undesirable" species in many waters. This is largely due to the species' perceived tendency to prey upon small trout and salmon. First known in western science by the common name Columbia River Dace, the four species all became lumped under the offensive name "squawfish." In 1999, the American Fisheries Society adopted "pikeminnow" as the name it recommends, because Native Americans considered "squawfish" offensive.
Document 3: Cedar Creek (South Fork Eel River): Cedar Creek is an 11.2 mi tributary of the South Fork Eel River in Mendocino County in the U.S. state of California. The creek begins southeast of Red Mountain, at an elevation of 778 ft . It makes an S-curve west-northwest then bends sharply south, dropping into the valley of the South Fork Eel. The confluence is south of the city of Leggett, on the river's right bank. The only named tributary of Cedar Creek is Little Cedar Creek, a headwaters tributary. Big Dann Creek joins the South Fork Eel on the same bank, just upstream of Cedar Creek, while the next major tributary downstream of Cedar is Rock Creek. The Cedar Creek watershed is rugged and has few tributaries.
Document 4: Puget Sound salmon recovery: Puget Sound salmon recovery is a collective effort of federal, state and local authorities and non-profit coalitions of universities, scientists, business and industry aimed at restoring Pacific salmon and anadromous forms of Pacific trout ("Oncorhynchus") within the Puget Sound region. The Puget Sound lies within the native range of the Pacific Salmon ("Oncorhynchus") and two sea-run forms of Pacific trout, the coastal rainbow trout ("O. mykiss irideus") or steelhead and coastal cutthroat trout ("O. clarki clarki"). Populations of "Oncorhynchus" have seen significant declines since the middle of the 19th century due to over fishing, habitat loss, pollution and disease. Salmon species residing in or migrating through the Puget Sound to spawning streams include Chum ("O. keta"), Coho ("O. kisutch"), Chinook ("O. tshawytscha"), Sockeye ("O. nerka"), and Pink salmon ("O. gorbuscha"). Pacific salmon require freshwater rivers for spawning and most major tributaries of the Puget Sound have salmon, steelhead and cutthroat trout spawning runs.
Document 5: Codornices Creek: Codornices Creek (sometimes spelled and/or pronounced "Cordonices"), 2.0 mi long, is one of the principal creeks which runs out of the Berkeley Hills in the East Bay area of the San Francisco Bay Area in California. In its upper stretch, it passes entirely within the city limits of Berkeley, and marks the city limit with the adjacent city of Albany in its lower section. Before European settlement, Codornices probably had no direct, permanent connection to San Francisco Bay. Like many other small creeks, it filtered through what early maps show as grassland to a large, northward-running salt marsh and slough that also carried waters from Marin Creek and Schoolhouse Creek. A channel was cut through in the 19th Century, and Codornices flows directly to San Francisco Bay by way of a narrow remnant slough adjacent to Golden Gate Fields racetrack.
Document 6: Cottonwood Creek (Guadalupe County): Cottonwood Creek is a stream in South Central Texas, United States that runs approximately 9 miles from its source five miles east of New Berlin, Texas (in the Texas Prairielands), to its confluence with the Guadalupe River in Guadalupe County, Texas, four miles southeast of Seguin. The creek serves as a tributary of the Guadalupe River and forms its watershed near Seguin, Texas. There is a separate Cottonwood Creek that flows through northern Guadalupe County before discharging into the San Marcos River above Kingsbury.
Document 7: East Branch South Fork Eel River: 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 mi long, meandering west to its confluence with the South Fork Eel at Benbow Lake 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.
Document 8: Chinook salmon: The Chinook salmon ("Oncorhynchus tshawytscha") is the largest species in the Pacific salmon genus "Oncorhynchus". The common name refers to the Chinookan peoples. Other vernacular names for the species include king salmon, Quinnat salmon, spring salmon, and Tyee salmon. The scientific species name is based on the Russian common name "chavycha" (чавыча).
Document 9: Sockeye salmon: Sockeye salmon ("Oncorhynchus nerka"), also called red salmon, kokanee salmon, or blueback salmon, is an anadromous species of salmon found in the Northern Pacific Ocean and rivers discharging into it. This species is a Pacific salmon that is primarily red in hue during spawning. They can grow up to 84 cm in length and weigh 2.3 to(-) . Juveniles remain in freshwater until they are ready to migrate to the ocean, over distances of up to 1600 km . Their diet consists primarily of zooplankton. Sockeye salmon are semelparous, dying after they spawn. Some populations, referred to as kokanee, do not migrate to the ocean and live their entire lives in freshwater.
Document 10: Little Cottonwood Creek: Little Cottonwood Creek is one of the principal streams entering Salt Lake Valley from the east rises near the summit of the Wasatch Mountains a short distance south of the ski resort town of Alta and flows in a westerly direction through Little Cottonwood Canyon until it emerges into Salt Lake Valley about eleven miles from its source thence its course is north westerly through Sandy, Midvale and Murray, Utah until it empties into the Jordan River about six miles south of Salt Lake City. Its whole length is nearly twenty seven miles.
Document 11: Chum salmon: The chum salmon ("Oncorhynchus keta") is a species of anadromous fish in the salmon family. It is a Pacific salmon, and may also be known as dog salmon or keta salmon, and is often marketed under the name silverbrite salmon. The name chum salmon comes from the Chinook Jargon term "tzum", meaning "spotted" or "marked", while "keta" in the scientific name comes from the Evenki language of Eastern Siberia via Russian.
Document 12: Cottonwood Creek (Sacramento River): Cottonwood Creek is a major stream in Northern California in the United States and is a tributary of the Sacramento River. About 68 mi long measured to its uppermost tributaries, the creek drains a large rural area bounded by the crest of the Coast Ranges, traversing the northwestern Sacramento Valley before emptying into the Sacramento River near the town of Cottonwood. For its entire length, it defines the boundary of Shasta County and Tehama County. Because Cottonwood Creek is the largest undammed tributary of the Sacramento River, it is known for its Chinook salmon and steelhead runs.
Document 13: Trout Creek (Truckee River): Trout Creek is a small tributary of the Truckee River draining about 5.1 sqmi along the eastern crest of the Sierra Nevada. It originates east of Donner Ridge and north of Donner Lake in the Tahoe-Donner Golf Course and flows through the town of Truckee, California to its confluence with the Truckee River in Nevada County, California, United States just west of Highway 267.
Document 14: Rush Creek (Mono County, California): Rush Creek is a 27.2 mi creek in California on the eastern slope of the Sierra Nevada, running east and then northeast to Mono Lake. Rush Creek is the largest stream in the Mono Basin, carrying 41% of the total runoff. It was extensively diverted by the Los Angeles Aqueduct system in the twentieth century until California Trout, Inc., the National Audubon Society, and the Mono Lake Committee sued Los Angeles Department of Water and Power (LADWP) for continuous low flows in Rush Creek to maintain trout populations in good condition, which was ordered by the court in 1985.
Document 15: Geoduck: The Pacific geoduck ( ), scientific name "Panopea generosa", is a species of very large, edible saltwater clam in the family Hiatellidae. The common name is derived from a Lushootseed (Nisqually) word "gʷídəq".
ground_truth: Oncorhynchus