Question: The Carson River is named for a U.S. what?

full_context: Document 1: Carson City, Nevada: Carson City, officially the Consolidated Municipality of Carson City, is an independent city and the capital of the US state of Nevada, named after the mountain man Kit Carson. As of the 2010 census, the population was 55,274. The majority of the population of the town lives in Eagle Valley, on the eastern edge of the Carson Range, a branch of the Sierra Nevada, about 30 mi south of Reno. The town originated as a stopover for California bound emigrants, but developed into a city with the Comstock Lode, a silver strike in the mountains to the northeast. The city has served as the capital of Nevada since statehood in 1864 and for much of its history was a hub for the Virginia and Truckee Railroad, although the tracks were removed in the 1950s. Prior to 1969, Carson City was the county seat of Ormsby County. In 1969, the county was abolished, and its territory merged with Carson City to form the Consolidated Municipality of Carson City. With the consolidation, the city limits today extend west across the Sierra Nevada to the California state line in the middle of Lake Tahoe. Like other independent cities in the United States, it is treated as a county-equivalent for census purposes.
Document 2: East Fork Carson River: The East Fork Carson River is the largest tributary of the Carson River, flowing through California and Nevada in the western United States. The north-flowing river is 61 mi long and drains a mostly rural, mountainous watershed of 392 mi2 .
Document 3: Kit Carson Peak: Kit Carson Peak is a high mountain summit of the Crestones in the Sangre de Cristo Range of the Rocky Mountains of North America. Officially designated Kit Carson Mountain, the 14171 ft fourteener is located 8.4 km east by south (bearing 102°) of the Town of Crestone in Saguache County, Colorado, United States. The name Kit Carson Mountain is used for both the massif with three summits (Columbia Point, Kit Carson Peak and Challenger Point), or to describe the main summit only. The mountain is named in honor of frontiersman Christopher Houston "Kit" Carson. The Crestones are a cluster of high summits in the Sangre de Cristo Range, comprising Crestone Peak, Crestone Needle, Kit Carson Peak, Challenger Point, Humboldt Peak, and Columbia Point. They are usually accessed from common trailheads.
Document 4: Carson Valley Hospital: The Carson Valley Hospital is a historic hospital located at 1466 U.S. Route 395 in Gardnerville, Nevada. The hospital was built in 1914 by Dr. E. H. Hawkins, the county physician and health officer of Douglas County. The hospital was regarded as one of Nevada's best, and it included modern tools such as an X-ray machine, a rarity in small town hospitals at the time. While Hawkins anticipated that Douglas County would need a modern hospital for its growing population, the county's population actually fell at the 1920 census, and the community struggled to keep its hospital open. Hawkins sold the hospital in 1918, and it closed in 1924. The building was used for housing until 1958, when it was vacated.
Document 5: William Carver (Wild Bunch): William "News" Carver (September 12, 1868 – April 2, 1901) was an American outlaw and a member of Butch Cassidy's Wild Bunch during the closing years of the American Old West. His nickname "News" was given to him because he enjoyed seeing his name in newspaper stories of his gang's exploits. He was ambushed and killed by Sheriff deputies in 1901.
Document 6: Carson River Canyon: The Carson River Canyon is a scenic canyon in Lyon County, Nevada through which the Carson River flows. The city of Carson City, Nevada is currently working to purchase 900 acres of the canyon for open space and recreational purposes.
Document 7: Davy Crockett: David "Davy" Crockett (August 17, 1786 – March 6, 1836) was a 19th-century American folk hero, frontiersman, soldier, and politician. He is commonly referred to in popular culture by the epithet "King of the Wild Frontier". He represented Tennessee in the U.S. House of Representatives and served in the Texas Revolution.
Document 8: Clear Creek (Nevada): Clear Creek is a 13.5 mi long stream which begins at 8780 ft on the southern slopes of Snow Valley Peak (Toiyabe National Forest, Carson Range) west of Carson City. It is the only perennial tributary of the Carson River mainstem, and is protected by The Nature Conservancy. Its mouth is at its confluence with the Carson River in the southeast portion of Carson City, Nevada.
Document 9: John Wallace Crawford: John Wallace ("Captain Jack)" Crawford (1847–1917), known as "The Poet Scout", was an American adventurer, educator, and author. "Captain Jack" was a master storyteller about the Wild West and is known in American history as one of the most popular performers in the late nineteenth century. His daring ride of 350 miles in six days to carry dispatches to Fort Laramie for the "New York Herald", to tell the news of the great victory by Gen. George Crook against the village of Chief American Horse at the Battle of Slim Buttes during the Great Sioux War of 1876-1877, made him a national celebrity.
Document 10: Carson River: The Carson River is a northwestern Nevada river that empties into the Carson Sink, an endorheic basin. The main stem of the river is 131 mi long although addition of the East Fork makes the total length 205 mi , traversing five counties: Alpine County in California and Douglas, Storey, Lyon, and Churchill Counties in Nevada, as well as the Consolidated Municipality of Carson City, Nevada. The river is named for Kit Carson, who guided John C. Frémont's expedition westward up the Carson Valley and across Carson Pass in winter, 1844.
Document 11: Fremont Peak (Wyoming): Fremont Peak is the third highest peak in Wyoming and straddles the boundary between Fremont and Sublette counties. It is named for American explorer John C. Fremont who climbed the peak with Charles Preuss and Johnny Janisse on August 13 to August 15, 1842. Kit Carson had been with the climbing party on its first attempt at the peak, but had gone back for supplies the day Fremont and his men reached the summit. Carson is thought by some to have been the first to climb neighboring Jackson Peak. At that time, Fremont Peak was mistakenly thought to be the highest mountain in the Rocky Mountains, although there are actually over 100 higher peaks in the range.
Document 12: Daniel Boone: Daniel Boone (November 2, 1734 [O.S. October 22] September 26, 1820) was an American pioneer, explorer, woodsman, and frontiersman, whose frontier exploits made him one of the first folk heroes of the United States. Boone is most famous for his exploration and settlement of what is now Kentucky, which was then part of Virginia but on the other side of the mountains from the settled areas. As a young adult, Boone supplemented his farm income by hunting and trapping game, and selling their pelts in the fur market. Through this occupational interest, Boone first learned the easy routes to the area. Despite some resistance from American Indian tribes such as the Shawnee, in 1775, Boone blazed his Wilderness Road through the Cumberland Gap in the Appalachian Mountains from North Carolina and Tennessee into Kentucky. There, he founded the village of Boonesborough, Kentucky, one of the first American settlements west of the Appalachians. Before the end of the 18th century, more than 200,000 Americans migrated to Kentucky/Virginia by following the route marked by Boone.
Document 13: Carson River Diversion Dam: The Carson River Diversion Dam on the Carson River near Fallon, Nevada was built in 1904-05. It is a 21 ft tall, 241 ft long "concrete gate structure" with 21 "double leaf slide 5 x spillway sections.
Document 14: Lewis Wetzel: Lewis Wetzel (February 24, 1763 -1808) was a frontiersman and Native American fighter who roamed the hills of western Virginia and Ohio. Wetzel County, West Virginia, is named for him. Zane Grey, the great Western novelist, wrote about Wetzel in his books "Spirit of the Border", "Betty Zane", and "The Last Trail". Wetzel is regarded as a hero by many Americans, a lesser-known version of Daniel Boone. He was accused in 1788 of the murder of peaceful Native Americans, but he escaped and there was no trial.
Document 15: Kit Carson: Christopher Houston Carson (December 24, 1809 – May 23, 1868), better known as Kit Carson, was an American frontiersman. He was a mountain man (fur trapper), wilderness guide, Indian agent, and U.S. Army officer. Carson became a frontier legend in his own lifetime via biographies and news articles. Exaggerated versions of his exploits were the subject of dime novels.
ground_truth: Army officer