The Sandy River Delta is a natural area at the confluence of the Sandy and Columbia rivers in Oregon. Also known as "thousand acres", Sandy River Delta is composed of 1,400 acres administered by the United States Forest Service as part of the Columbia River Gorge National Scenic Area near the Portland metro area and the city of Troutdale .
163-471: The Lewis and Clark Expedition passed through the area twice, in November 1805 and spring of 1806, noting abundant wildlife and stopping to hunt and gather food. During most of the 20th century the land was owned privately as part of a cattle ranch, until the 1950s when a portion was acquired for the construction of Interstate 84 , which now forms the southern boundary of the area. The Forest Service acquired
326-536: A tributary of the Mississippi, the Missouri River is slightly longer and carries a comparable volume of water. When combined with the lower Mississippi River, it forms the world's fourth-longest river system . For over 12,000 years, people have depended on the Missouri River and its tributaries as a source of sustenance and transportation. More than ten major groups of Native Americans populated
489-651: A French-Canadian fur trapper named Toussaint Charbonneau , and his young Shoshone wife, Sacagawea . Charbonneau, at this time, began to serve as the expedition's translator. Peace was established between the expedition and the Mandan chiefs with the sharing of a Mandan ceremonial pipe . By April 25, Captain Lewis wrote his progress report of the expedition's activities and observations of the Native American nations they had encountered to-date in A Statistical view of
652-468: A brief visit to Kentucky to see his wife before forcing him to return to Missouri. It is unlikely that he ever saw his wife again: "ten years after the expedition's end, York was still enslaved, working as a wagoner for the Clark family". The last years of York's life are disputed. In the 1830s, a Black man who said he had first come with Lewis and Clark was living as a chief with Native Americans they met on
815-688: A debt crisis, Napoleon offered to sell the entirety of Louisiana, including the Missouri River, for $ 15 million – amounting to less than 3¢ per acre. The deal was signed in 1803, doubling the size of the United States with the acquisition of the Louisiana Territory . In 1803, Jefferson instructed Meriwether Lewis to explore the Missouri and search for a water route to the Pacific Ocean. By then, it had been discovered that
978-603: A deer. The expedition was prepared with flintlock firearms, knives, blacksmithing supplies, and cartography equipment. They also carried flags, gift bundles, medicine, and other items that they would need for their journey. The route of Lewis and Clark's expedition took them up the Missouri River to its headwaters, then on to the Pacific Ocean via the Columbia River, and it may have been influenced by
1141-402: A higher regard for her, and provided some support for her children in subsequent years. In the journals, they used the terms "squar" ( squaw ) and "savages" to refer to Sacagawea and other indigenous peoples. An enslaved Black man known only as York took part in the expedition as personal servant to William Clark, his enslaver. York did much to help the expedition succeed. He proved popular with
1304-600: A large endorheic drainage called the Great Divide Basin exists between the Missouri and Green watersheds in western Wyoming. This area is sometimes counted as part of the Missouri River watershed, even though its waters do not flow to either side of the Continental Divide. To the north, the much lower Laurentian Divide separates the Missouri River watershed from those of the Oldman River ,
1467-419: A period of record greater than fifty years is at Hermann, Missouri – 97.9 miles (157.6 km) upstream of the mouth of the Missouri – where the average annual flow was 87,520 cu ft/s (2,478 m /s) from 1897 to 2010. About 522,500 sq mi (1,353,000 km ), or 98.7% of the watershed, lies above Hermann. The highest annual mean was 181,800 cu ft/s (5,150 m /s) in 1993, and
1630-582: A physician and former leader in the American Revolution . He also arranged for Lewis to be further educated by Andrew Ellicott , an astronomer who instructed him in the use of a sextant , among other navigational instruments. From Benjamin Smith Barton , Lewis learned how to describe and preserve plant and animal specimens; from Robert Patterson , refinements in computing latitude and longitude, and Caspar Wistar covered fossils , and
1793-408: A portrait of Jefferson and inscribed with a message of friendship and peace, called Indian Peace Medals . The soldiers were to distribute them to the tribes that they met. The expedition also prepared advanced weapons to display their military firepower. Among these was an Austrian-made .46 caliber Girandoni air rifle , a repeating rifle with a 20-round tubular magazine that was powerful enough to kill
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#17327913667901956-828: A practical route through the Northwest to the Pacific coast. Alexander Mackenzie had already charted a route in his quest for the Pacific, following Canada 's Mackenzie River to the Arctic Ocean in 1789. Mackenzie and his party were the first non-indigenous people to cross mainland North America, north of Mexico , reaching the Pacific coast of British Columbia in 1793–twelve years earlier than Lewis and Clark. Mackenzie's accounts in Voyages from Montreal (1801) informed Jefferson of Britain 's intent to establish control over
2119-568: A retaliatory raid from the Omaha tribe, to the south. A recent Sioux raid had killed 75 Omaha men, burned 40 lodges, and taken four dozen prisoners." Captain Lewis made his first mistake by offering the Sioux chief gifts first, which insulted and angered the Partisan chief. Communication was difficult, since the expedition's only Sioux language interpreter was Pierre Dorion who had stayed behind with
2282-413: A river that plays hide and seek with you today and tomorrow follows you around like a pet dog with a dynamite cracker tied to his tail. That river is the Missouri. With a drainage basin spanning 529,350 square miles (1,371,000 km ), the Missouri River's catchment encompasses nearly one-sixth of the area of the United States or just over five percent of the continent of North America. Comparable to
2445-666: A tributary of the South Saskatchewan River , as well as the Souris , Sheyenne , and smaller tributaries of the Red River of the North . All of these streams are part of Canada's Nelson River drainage basin, which empties into Hudson Bay . There are also several large endorheic basins between the Missouri and Nelson watersheds in southern Alberta and Saskatchewan. The Minnesota and Des Moines Rivers, tributaries of
2608-749: A valuable member of the party, aiding with hunting and protection from bears and other potential predators. He was the only animal to complete the entire trip. Lewis and his crew set-sail that afternoon, traveling down the Ohio River to meet up with Clark near Louisville, Kentucky , in October 1803, at the Falls of the Ohio . Their goals were to explore the vast territory acquired by the Louisiana Purchase and to establish trade and US sovereignty over
2771-419: A whole, the Missouri is thirteenth largest, after the Mississippi, Mackenzie , St. Lawrence, Ohio, Columbia, Niagara, Yukon, Detroit, St. Clair, Fraser , Slave , and Koksoak . As the Missouri drains a predominantly semi-arid region, its discharge is much lower and more variable than other North American rivers of comparable length. Before the construction of dams, the river flooded twice each year – once in
2934-602: Is joined by the Gallatin a mile (1.6 km) downstream. It then passes through Canyon Ferry Lake , a reservoir west of the Big Belt Mountains . Issuing from the mountains near Cascade , the river flows northeast to the city of Great Falls , where it drops over the Great Falls of the Missouri , a series of five substantial waterfalls. It then winds east through a scenic region of canyons and badlands known as
3097-563: Is measured to the hydrologic source, regardless of naming convention. The main stem of the Kansas River, for example, is 148 miles (238 km) long. However, including the longest headwaters tributaries, the 453-mile (729 km) Republican River and the 156-mile (251 km) Arikaree River , brings the total length to 749 miles (1,205 km). Similar naming issues are encountered with the Platte River, whose longest tributary,
3260-464: Is sparsely populated. However, many northwestern cities, such as Billings, Montana , are among the fastest growing in the Missouri basin. With more than 170,000 square miles (440,000 km ) under the plow, the Missouri River watershed includes roughly one-fourth of all the agricultural land in the United States, providing more than a third of the country's wheat, flax, barley, and oats. However, only 11,000 square miles (28,000 km ) of farmland in
3423-782: The American Fur Company founded Fort Union at the confluence of the Missouri and Yellowstone Rivers. Fort Union gradually became the main headquarters for the fur trade in the upper Missouri basin. Fur trapping activities in the early 19th century encompassed nearly all of the Rocky Mountains on both the eastern and western slopes. Trappers of the Hudson's Bay Company, St. Louis Missouri Fur Company, American Fur Company, Rocky Mountain Fur Company , North West Company and other outfits worked thousands of streams in
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#17327913667903586-713: The Bighorn , in southern Montana. Although the business started small, it quickly grew into a thriving trade. Lisa's men started construction of Fort Raymond , which sat on a bluff overlooking the confluence of the Yellowstone and Bighorn, in the fall of 1807. The fort would serve primarily as a trading post for bartering with the Native Americans for furs. This method was unlike that of the Pacific Northwest fur trade, which involved trappers hired by
3749-555: The Clearwater , Snake , and Columbia rivers, past Celilo Falls and present-day Portland , at the confluence of the Willamette and Columbia rivers. Lewis and Clark used William Robert Broughton 's 1792 notes and maps to orient themselves once they reached the lower Columbia River. The sighting of Mount Hood and other stratovolcanos confirmed that the expedition had almost reached the Pacific Ocean. The expedition sighted
3912-521: The Columbia River system, which drains into the Pacific, had a similar latitude as the headwaters of the Missouri River, and it was widely believed that a connection or short portage existed between the two. However, Spain balked at the takeover, citing that they had never formally returned Louisiana to the French. Spanish authorities warned Lewis not to take the journey and forbade him from seeing
4075-667: The Corps of Discovery Expedition , was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase . The Corps of Discovery was a select group of U.S. Army and civilian volunteers under the command of Captain Meriwether Lewis and his close friend Second Lieutenant William Clark . Clark, along with 30 others, set out from Camp Dubois (Camp Wood), Illinois , on May 14, 1804, met Lewis and ten other members of
4238-568: The Doctrine of Discovery . The expedition was sponsored by the American Philosophical Society (APS). Lewis and Clark received some instruction in astronomy , botany , climatology , ethnology , geography , meteorology , mineralogy , ornithology , and zoology . During the expedition, they made contact with over 70 Native American tribes and described more than 200 new plant and animal species. Jefferson had
4401-543: The Illinoian ) glaciation diverted the Missouri River southeastward toward its present confluence with the Mississippi and caused it to integrate into a single river system that cuts across the regional slope. In western Montana, the Missouri River is thought to have once flowed north then east around the Bear Paw Mountains . Sapphires are found in some spots along the river in western Montana. Advances of
4564-645: The Lakota nation (whom the Americans called Sioux or "Teton-wan Sioux") had problems when they met, and there was a concern the two sides might clash. According to Harry W. Fritz, "All earlier Missouri River travelers had warned of this powerful and aggressive tribe, determined to block free trade on the river. ... The Sioux were also expecting a retaliatory raid from the Omaha tribe, to the south. A recent Sioux raid had killed 75 Omaha men, burned 40 lodges, and taken four dozen prisoners." The expedition held talks with
4727-531: The Maureen and Mike Mansfield Library at the University of Montana . One of the expedition's primary objectives as directed by President Jefferson was to be a surveillance mission that would report back the whereabouts, military strength, lives, activities, and cultures of the various Native American tribes that inhabited the territory newly acquired by the United States as part of the Louisiana Purchase and
4890-515: The Mound builders , stayed along the Missouri, becoming the ancestors of the later Indigenous peoples of the Great Plains. Indigenous peoples of North America who have lived along the Missouri have historically had access to ample food, water, and shelter. Many migratory animals naturally inhabit the plains area. Before they were hunted by colonists and Native Americans, these animals, such as
5053-713: The Niobrara River and many smaller tributaries from the southwest. It then proceeds to form the boundary of South Dakota and Nebraska and is joined by the James River from the north. At Sioux City the Big Sioux River comes in from the north, after which the Missouri forms the Iowa –Nebraska boundary. It flows south to the city of Omaha where it receives its longest tributary, the Platte River , from
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5216-551: The North Platte River , is more than twice as long as its mainstream. The Missouri's headwaters above Three Forks extend much farther upstream than the main stem. Measured to the farthest source at Brower's Spring, the Jefferson River is 298 miles (480 km) long. Thus measured to its highest headwaters, the Missouri River stretches for 2,639 miles (4,247 km). When combined with the lower Mississippi,
5379-544: The Osage and Gasconade Rivers from the south downstream of Jefferson City . The river then rounds the northern side of St. Louis to join the Mississippi River on the border between Missouri and Illinois . There is only one river with a personality, a sense of humor, and a woman's caprice; a river that goes traveling sidewise, that interferes in politics, rearranges geography, and dabbles in real estate;
5542-589: The Otoe , Missouria , Omaha , Ponca , Dakota , Lakota , Arikara , Hidatsa , Mandan , Assiniboine , Gros Ventres and Blackfeet . In this pre-colonial and early-colonial era, the Missouri river was used as a path of trade and transport, and the river and its tributaries often formed territorial boundaries. Most of the Indigenous peoples in the region at that time had semi-nomadic cultures, with many tribes maintaining different summer and winter camps. However,
5705-495: The Pacific Northwest region, provided a foundation for future explorers and emigrants. They also negotiated relations with numerous Native American tribes and wrote extensive reports on the climate, ecology and geology of the region. Many present-day names of geographic features in the upper Missouri basin originated from their expedition. As early as the 18th century, fur trappers entered the extreme northern basin of
5868-719: The Treaty of Paris , France ceded its Canadian possessions to the British, gaining Louisiana from the Spanish in return. Initially, the Spanish did not extensively explore the Missouri and let French traders continue their activities under license. However, this ended after news of incursions by trappers working for the Hudson's Bay Company in the upper Missouri River watershed was brought back following an expedition by Jacques D'Eglise in
6031-418: The buffalo , provided meat, clothing, and other everyday items; there were also great riparian areas in the river's floodplain that provided habitat for herbs and other staple foods. No written records from the tribes and peoples of the pre-European contact period exist because they did not yet use writing. According to the writings of early colonists, some of the major tribes along the Missouri River included
6194-538: The fluvial Arikaree Group were deposited between 29 and 19 million years ago. The Miocene -age Ogallala and the slightly younger Pliocene -age Broadwater Formation deposited atop the Arikaree Group, and are formed from material eroded off of the Rocky Mountains during a time of increased generation of topographic relief; these formations stretch from the Rocky Mountains nearly to the Iowa border and give
6357-726: The headwaters of the Missouri River first rose in the Laramide Orogeny , a mountain-building episode that occurred from around 70 to 45 million years ago (the end of the Mesozoic through the early Cenozoic ). This orogeny uplifted Cretaceous rocks along the western side of the Western Interior Seaway , a vast shallow sea that stretched from the Arctic Ocean to the Gulf of Mexico, and deposited
6520-472: The "April Rise" or " Spring Fresh ", with the melting of snow on the plains of the watershed, and in the "June Rise", caused by snowmelt and summer rainstorms in the Rocky Mountains. The latter was far more destructive, with the river increasing to over ten times its normal discharge in some years. The Missouri's discharge is affected by over 17,000 reservoirs with an aggregate capacity of some 141 million acre-feet (174 km ). By providing flood control,
6683-541: The "vilest miscreants of the savage race". They came close to blows several times, until the Lakota chief, Black Buffalo, persuaded Lewis to distribute more tobacco to the assembled warriors. Lewis complied and the expedition was allowed to continue upstream to the Arikara villages. In the winter of 1804–05, the party built Fort Mandan , near present-day Washburn, North Dakota . Just before departing on April 7, 1805,
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6846-582: The American West and a flood of settlers, farmers, ranchers, adventurers, hopefuls, financially bereft, and entrepreneurs took their place. The river roughly defined the American frontier in the 19th century, particularly downstream from Kansas City, where it takes a sharp eastern turn into the heart of the state of Missouri, an area known as the Boonslick . As first area settled by Europeans along
7009-518: The American presence there, with the American flag flying over the fort. During the winter at Fort Clatsop, Lewis committed himself to writing. He filled many pages of his journals with valuable knowledge, mostly about botany, because of the abundant growth and forests that covered that part of the continent. The health of the men also became a problem, with many suffering from colds and influenza. Knowing that maritime fur traders sometimes visited
7172-539: The Canadian provinces of Alberta and Saskatchewan . The watershed's largest city is Denver , Colorado, with a population of more than six hundred thousand. Denver is the main city of the Front Range Urban Corridor whose cities had a combined population of over four million in 2005, making it the largest metropolitan area in the Missouri River basin. Other major population centers – mostly in
7335-566: The Columbia River, and later by trekking over land. Before leaving, Clark gave the Chinook a letter to give to the next ship captain to visit, which was the same Captain Hill who had been nearby during the winter. Hill took the letter to Canton and had it forwarded to Thomas Jefferson, who thus received it before Lewis and Clark returned. They made their way to Camp Chopunnish in Idaho, along
7498-402: The Corps had as many as 45 members, including the officers, enlisted military personnel, civilian volunteers, and York , an African-American man enslaved by Clark. From St. Charles, the expedition followed the Missouri through what is now Kansas City, Missouri , and Omaha, Nebraska . On August 20, 1804, Sergeant Charles Floyd died, apparently from acute appendicitis . He had been among
7661-508: The French colonial authorities since 1706, when he deserted his post as commandant of Fort Detroit after poorly handling an attack by the Ottawa that resulted in thirty-one deaths. However, his reputation was enhanced in 1720 when the Pawnee – who had earlier been befriended by Bourgmont – massacred the Spanish Villasur expedition near present-day Columbus, Nebraska , on the Missouri River, temporarily ending Spanish encroachment on French Louisiana. Bourgmont established Fort Orleans ,
7824-417: The Gorge), it is not a dog park, but rather a multi-use natural area; commercial dog walking is prohibited. Waterfowl hunting via shotgun only is allowed north and east of the Bonneville Power Administration lines crossing the area. The area is open dawn to dusk, with parking available for a fee or via recreation pass. Lewis and Clark Expedition The Lewis and Clark Expedition , also known as
7987-418: The Great Plains much of their gentle but persistent eastward tilt, and also constitute a major aquifer. Immediately before the Quaternary Ice Age , the Missouri River was likely split into three segments: an upper portion that drained northwards into Hudson Bay, and middle and lower sections that flowed eastward down the regional slope. As the Earth plunged into the Ice Age, a pre-Illinoian (or possibly
8150-419: The Gulf at the confluence of the Arkansas River with the Mississippi. In 1682, France expanded its territorial claims in North America to include land on the western side of the Mississippi River, which included the lower portion of the Missouri. However, the Missouri itself remained formally unexplored until Étienne de Veniard, Sieur de Bourgmont commanded an expedition in 1714 that reached at least as far as
8313-477: The Indian nations inhabiting the Territory of Louisiana , which outlined the names of various tribes, their locations, trading practices and water routes used, among other points. President Jefferson would later present this report to Congress. They followed the Missouri to its headwaters, and over the Continental Divide at Lemhi Pass , then north to Traveler's Rest , and crossed the Bitteroots at Lolo Pass . They descended on foot, then proceeded in canoes down
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#17327913667908476-403: The Kansas River and its tributary the Republican River as well as pair of smaller Colorado streams, Big Sandy Creek and the South Platte River , to near Denver. The gold rushes precipitated the decline of the Bozeman Trail as a popular emigration route, as it passed through land held by often-hostile Native Americans. Safer paths were blazed to the Great Salt Lake near Corinne, Utah , during
8639-421: The Lakota near the confluence of the Missouri and Bad Rivers in what is now Fort Pierre, South Dakota . One of their horses disappeared, and they believed the Sioux were responsible. Afterward, the two sides met and there was a disagreement, and the Sioux asked the men to stay or to give more gifts (or tribute) instead, before being allowed to pass through their territory. Clark wrote they were "warlike" and were
8802-452: The Lewis and Clark expedition set off in May, the Spanish sent four armed expeditions of 52 soldiers, mercenaries , and Native Americans on August 1, 1804, from Santa Fe , New Mexico northward under Pedro Vial and José Jarvet to intercept Lewis and Clark and imprison the entire expedition. They reached the Pawnee settlement on the Platte River in central Nebraska and learned that the expedition had been there many days before. The expedition
8965-402: The Louisiana territory to the Pacific Ocean. He did not attempt to make a secret of the Lewis and Clark expedition from Spanish, French, and British officials, but rather claimed different reasons for the venture; he used a secret message to ask for funding, due to poor relations with the opposition Federalist Party in Congress. Congress subsequently appropriated $ 2,324 for supplies and food,
9128-461: The MacKay and Evans map of the Missouri, although Lewis eventually managed to gain access to it. Meriwether Lewis and William Clark began their famed expedition in 1804 with a party of thirty-three people in three boats. Although they became the first Europeans to travel the entire length of the Missouri and reach the Pacific Ocean via the Columbia, they found no trace of the Northwest Passage. The maps made by Lewis and Clark, especially those of
9291-407: The Missouri Breaks, receiving the Marias River from the west then widening into the Fort Peck Lake reservoir a few miles above the confluence with the Musselshell River . Farther on, the river passes through the Fort Peck Dam , and immediately downstream, the Milk River joins from the north. Flowing eastward through the plains of eastern Montana, the Missouri receives the Poplar River from
9454-766: The Missouri River in the hopes of finding populations of beaver and river otter , the sale of whose pelts drove the thriving North American fur trade . They came from many different places – some from the Canadian fur corporations at Hudson Bay, some from the Pacific Northwest ( see also : Maritime fur trade ), and some from the midwestern United States. Most did not stay in the area for long, as they failed to find significant resources. The first glowing reports of country rich with thousands of game animals came in 1806 when Meriwether Lewis and William Clark returned from their two-year expedition. Their journals described lands amply stocked with thousands of buffalo, beaver, and river otter; and also an abundant population of sea otters on
9617-426: The Missouri River, with most of the larger ones coming in as the river draws close to the mouth. Most rivers and streams in the Missouri River basin flow from west to east, following the incline of the Great Plains; however, some eastern tributaries such as the James, Big Sioux and Grand River systems flow from north to south. The Missouri's largest tributaries by runoff are the Yellowstone in Montana and Wyoming,
9780-419: The Missouri and Columbia Rivers, and for the most part the expedition did not encounter hostilities. However, there was a tense confrontation on September 25, 1804, with the Teton- Sioux tribe (also known as the Lakota people , one of the three tribes that comprise the Great Sioux Nation ), under chiefs that included Black Buffalo and the Partisan. These chiefs confronted the expedition and demanded tribute from
9943-449: The Missouri and its headwaters form part of the fourth-longest river system in the world , at 3,745 miles (6,027 km). By discharge , the Missouri is the ninth largest river of the United States, after the Mississippi, St. Lawrence , Ohio , Columbia, Niagara , Yukon , Detroit , and St. Clair . The latter two, however, are sometimes considered part of a strait between Lake Huron and Lake Erie . Among rivers of North America as
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#173279136679010106-595: The Missouri flowed in a new course along the south side of the Bearpaws, and the lower part of the Milk River tributary took over the original main channel. The Missouri's nickname, the "Big Muddy", was inspired by its enormous loads of sediment or silt – some of the largest of any North American river. In its pre-development state, the river transported some 175 to 320 million short tons (159 to 290 million metric tons) per year. The construction of dams and levees has drastically reduced this to 20 to 25 million short tons (18 to 23 million metric tons) in
10269-399: The Missouri to start. As the 1830s drew to a close, the fur industry slowly began to die as silk replaced beaver fur as a desirable clothing item. By this time, also, the beaver population of streams in the Rocky Mountains had been decimated by intense hunting. Furthermore, frequent Native American attacks on trading posts made it dangerous for employees of the fur companies. In some regions,
10432-418: The Missouri watershed as well as the neighboring Columbia, Colorado, Arkansas, and Saskatchewan river systems. During this period, the trappers, also called mountain men , blazed trails through the wilderness that would later form the paths pioneers and settlers would travel by into the West. Transport of the thousands of beaver pelts required ships, providing one of the first large motives for river transport on
10595-410: The Missouri's headwaters to the westward-flowing Columbia. The Corps of Discovery departed from Camp Dubois (Camp Wood) at 4 pm on May 14, 1804. Under Clark's command, they traveled up the Missouri River in their keelboat and two pirogues to St. Charles, Missouri where Lewis joined them six days later. The expedition set out the next afternoon, May 21. While accounts vary, it is believed
10758-402: The Native American nations for extended periods of time during the winter months, they soon learned first hand of their customs and social orders. One of the primary customs that distinguished Native American cultures from those of the West was that it was customary for the men to take on two or more wives if they were able to provide for them and often took on a wife or wives who were members of
10921-524: The Native American nations were constantly at war with other tribes, especially the Sioux, who, while remaining generally friendly to the white fur traders, had proudly boasted of and justified the almost complete destruction of the once great Cahokia nation, along with the Missouris, Illinois, Kaskaskia , and Piorias tribes that lived about the countryside adjacent to the upper Mississippi and Missouri rivers. Sacagawea, sometimes spelled Sakajawea or Sakagawea ( c. 1788 – December 20, 1812),
11084-512: The Native Americans along the Missouri River. Jefferson also wanted to establish a US claim of "discovery" to the Pacific Northwest and Oregon territory by documenting an American presence there before European nations could claim the land. According to some historians, Jefferson understood that he would have a better claim of ownership to the Pacific Northwest if the team gathered scientific data on animals and plants. However, his main objectives were centered around finding an all-water route to
11247-418: The Native Americans, who had never seen a Black man. He also helped with hunting and the heavy labor of pulling boats upstream. Despite his contributions to the Corps of Discovery, Clark refused to release York from bondage upon returning east. While all the other explorers enjoyed rewards of double pay and hundreds of acres of land, York received nothing. After the end of the expedition, Clark allowed York only
11410-404: The Pacific Northwest coast. In 1807, explorer Manuel Lisa organized an expedition which would lead to the explosive growth of the fur trade in the upper Missouri River country. Lisa and his crew traveled up the Missouri and Yellowstone Rivers, trading manufactured items in return for furs from local Native American tribes, and established a fort at the confluence of the Yellowstone and a tributary,
11573-486: The Pacific Ocean for the first time on November 7, 1805, arriving two weeks later. The expedition faced the beginning of its second bitter winter camped on the north side of the Columbia River, in a storm-wracked area Clark called Dismal Nitch . Lack of food was a major factor. The elk, the party's main source of food, had retreated from their usual haunts into the mountains, and the party was now too poor to purchase enough food from neighboring tribes. On November 24, 1805,
11736-461: The Pacific Ocean. In late June, Jolliet and Marquette became the first documented European discoverers of the Missouri River, which according to their journals was in full flood. "I never saw anything more terrific," Jolliet wrote, "a tangle of entire trees from the mouth of the Pekistanoui [Missouri] with such impetuosity that one could not attempt to cross it without great danger. The commotion
11899-525: The Pacific coast and commerce. His instructions to the expedition stated: The object of your mission is to explore the Missouri River, & such principle stream of it, as, by its course and communication with the waters of the Pacific ocean, whether the Columbia, Oregon, Colorado or any other river may offer the most direct & practicable water communication across this continent for the purpose of commerce. The US mint prepared special silver medals with
12062-452: The Platte and Yellowstone Rivers. Elevations in the watershed vary widely, ranging from just over 400 feet (120 m) at the Missouri's mouth to the 14,293-foot (4,357 m) summit of Mount Lincoln in central Colorado. The river drops 8,626 feet (2,629 m) from Brower's Spring, the farthest source. Although the plains of the watershed have extremely little local vertical relief,
12225-577: The Platte in Wyoming, Colorado, and Nebraska, and the Kansas – Republican / Smoky Hill and Osage in Kansas and Missouri. Each of these tributaries drains an area greater than 50,000 square miles (130,000 km ) or has an average discharge greater than 5,000 cu ft/s (140 m /s). The Yellowstone River has the highest discharge, even though the Platte is longer and drains a larger area. In fact,
12388-483: The Platte provided an abundant and reliable source of water for the pioneers as they headed west. Covered wagons, popularly referred to as prairie schooners , provided the primary means of transport until the beginning of regular boat service on the river in the 1850s. During the 1860s, gold strikes in Montana, Colorado, Wyoming, and northern Utah attracted another wave of hopefuls to the region. Although some freight
12551-594: The Rockies in Montana, Idaho and western Wyoming. The Columbia, Missouri and Colorado River watersheds meet at Three Waters Mountain in Wyoming's Wind River Range . South of there, the Missouri basin is bordered on the west by the drainage of the Green River , a tributary of the Colorado, then on the south by the mainstem of the Colorado. Both the Colorado and Columbia Rivers flow to the Pacific Ocean. However,
12714-639: The Rockies provide the majority of the flow in the Missouri and its tributaries. The Missouri and many of its tributaries cross the Great Plains, flowing over or cutting into the Ogallala Group and older mid-Cenozoic sedimentary rocks. The lowest major Cenozoic unit, the White River Formation , was deposited between roughly 35 and 29 million years ago and consists of claystone , sandstone , limestone , and conglomerate . Channel sandstones and finer-grained overbank deposits of
12877-419: The Rocky Mountains in Wyoming and Colorado eastward through the Great Plains. An early expedition led by Robert Stuart from 1812 to 1813 proved the Platte impossible to navigate by the dugout canoes they used, let alone the large sidewheelers and sternwheelers that would later ply the Missouri in increasing numbers. One explorer remarked that the Platte was "too thick to drink, too thin to plow". Nevertheless,
13040-419: The United States during the 19th century. The growth of the fur trade in the early 19th century laid much of the groundwork as trappers explored the region and blazed trails. Pioneers headed west en masse beginning in the 1830s, first by covered wagon , then by the growing numbers of steamboats that entered service on the river. Conflict between settlers and Native Americans in the watershed led to some of
13203-460: The West's biodiversity , topography and geography and to establish positive trade relations with (potentially unknown) Native American tribes. The expedition returned to St. Louis to report their findings to President Jefferson via maps, sketches, and various journals. One of Thomas Jefferson 's goals was to find "the most direct and practicable water communication across this continent, for
13366-591: The Yellowstone River, which was called Roche Jaune ("Yellow Rock") by the French. Although MacKay and Evans failed to accomplish their original goal of reaching the Pacific, they did create the first accurate map of the upper Missouri River. In 1795, the young United States and Spain signed Pinckney's Treaty , which recognized American rights to navigate the Mississippi River and store goods for export in New Orleans. Three years later, Spain revoked
13529-462: The Yellowstone's flow is about 13,800 cu ft/s (390 m /s) – accounting for sixteen percent of total runoff in the Missouri basin and nearly double that of the Platte. On the other end of the scale is the tiny Roe River in Montana, which at 201 feet (61 m) long is one of the world's shortest rivers. The table on the right lists the ten longest tributaries of the Missouri, along with their respective catchment areas and flows. Length
13692-796: The adventures of various explorers on the western frontier, and, consequently, maintained a long-held interest in further exploring this mostly-unknown region of the continent. In the 1780s, while Minister to France , Jefferson met John Ledyard in Paris , where they discussed a possible trip to the Pacific Northwest . Jefferson had also read Captain James Cook 's A Voyage to the Pacific Ocean (London, 1784), an account of Cook's third voyage , and Le Page du Pratz 's The History of Louisiana (London, 1763), all of which greatly influenced his decision to send an expedition. Like Captain Cook, he wished to discover
13855-409: The annual flow of the Mississippi past St. Louis, and as much as 70 percent in certain droughts. In 1990, the Missouri River watershed was home to about 12 million people. This included the entire population of the U.S. state of Nebraska, parts of the U.S. states of Colorado, Iowa, Kansas, Minnesota, Missouri, Montana, North Dakota, South Dakota, and Wyoming, and small southern portions of
14018-540: The appropriation of which was left in Lewis's charge. In 1803, Jefferson commissioned the Corps of Discovery and named Army Captain Meriwether Lewis its leader, who then invited William Clark to co-lead the expedition with him. Lewis demonstrated remarkable skills and potential as a frontiersman, and Jefferson made efforts to prepare him for the long journey ahead as the expedition was gaining approval and funding. Jefferson explained his choice of Lewis: It
14181-431: The basin is irrigated. A further 281,000 square miles (730,000 km ) of the basin is devoted to the raising of livestock, mainly cattle. Forested areas of the watershed, mostly second-growth , total about 43,700 square miles (113,000 km ). Urban areas, on the other hand, comprise less than 13,000 square miles (34,000 km ) of land. Most built-up areas are along the main stem and a few major tributaries, including
14344-456: The basin relied heavily on the bison as a food source, and their hides and bones served to create other household items. In time, the species came to benefit from the indigenous peoples' periodic controlled burnings of the grasslands surrounding the Missouri to clear out old and dead growth. The large bison population of the region gave rise to the term great bison belt , an area of rich annual grasslands that extended from Alaska to Mexico along
14507-410: The basin. As one of the continent's most significant river systems, the Missouri's drainage basin borders on many other major watersheds of the United States and Canada. The Continental Divide , running along the spine of the Rocky Mountains, forms most of the western border of the Missouri watershed. The Clark Fork and Snake River , both part of the Columbia River basin, drain the area west of
14670-704: The capital of North Dakota, where the Heart River joins from the west. It slows into the Lake Oahe reservoir just before the Cannonball River confluence. While it continues south, eventually reaching Oahe Dam in South Dakota , the Grand , Moreau and Cheyenne Rivers all join the Missouri from the west. The Missouri makes a bend to the southeast as it winds through the Great Plains, receiving
14833-585: The center of Native American wealth and trade lay along the Missouri River in the Dakotas region on its great bend south. A large cluster of walled Mandan, Hidatsa and Arikara villages situated on bluffs and islands of the river was home to thousands, and later served as a market and trading post used by early French and British explorers and fur traders. Following the introduction of horses to Missouri River tribes, possibly from feral European-introduced populations, Natives' way of life changed dramatically. The use of
14996-464: The chiefs back to North America. Fort Orleans was either abandoned or its small contingent massacred by Native Americans in 1726. The French and Indian War erupted when territorial disputes between France and Great Britain in North America reached a head in 1754. By 1763, France's army in North America had been defeated by a combined British-American force and was forced to sue for peace. In
15159-462: The continental ice sheets diverted the river and its tributaries, causing them to pool up into large temporary lakes such as Glacial Lakes Great Falls , Musselshell and others. As the lakes rose, the water in them often spilled across adjacent local drainage divides, creating now-abandoned channels and coulees including the Shonkin Sag , 100 miles (160 km) long. When the glaciers retreated,
15322-491: The early 1790s. In 1795 the Spanish chartered the Company of Discoverers and Explorers of the Missouri, popularly referred to as the "Missouri Company", and offered a reward for the first person to reach the Pacific Ocean via the Missouri. In 1794 and 1795 expeditions led by Jean-Baptiste Truteau and Antoine Simon Lecuyer de la Jonchšre did not even make it as far north as the Mandan villages in central North Dakota. Arguably
15485-430: The eastern flank of the Continental Divide. However, after the arrival of Europeans in North America, both the bison and the Native Americans saw a rapid decline in population. Massive over-hunting for sport by colonists eliminated bison populations east of the Mississippi River by 1833 and reduced the numbers in the Missouri basin to a mere few hundred. Foreign diseases brought by settlers, such as smallpox , raged across
15648-486: The eastern terminus of the First transcontinental railroad via a ferry ride across the Missouri between Council Bluffs, Iowa , and Omaha. The Hannibal Bridge became the first bridge to cross the Missouri River in 1869, and its location was a major reason why Kansas City became the largest city on the river upstream from its mouth at St. Louis. True to the then-ideal of Manifest Destiny , over 500,000 people set out from
15811-651: The end of the Pleistocene . During the end of the last glacial period , large migration of humans were taking place, such as those via the Bering land bridge between the Americas and Eurasia. Over centuries, the Missouri River formed one of these main migration paths. Most migratory groups that passed through the area eventually settled in the Ohio Valley and the lower Mississippi River Valley, but many, including
15974-399: The expedition declare "sovereignty" and demonstrate their military strength to ensure native tribes would be subordinate to the U.S., as European colonizers did elsewhere. After the expedition, the maps that were produced allowed the further discovery and settlement of this vast territory in the years that followed. In 1807, Patrick Gass , a private in the U.S. Army, published an account of
16137-427: The expedition encountered the various Native American tribes during the course of their journey, they observed and recorded information regarding their lifestyles, customs and the social codes they lived by, as directed by President Jefferson. By European standards, the Native American way of life seemed harsh and unforgiving as witnessed by members of the expedition. After many encounters and camping in close proximity to
16300-442: The expedition for their passage over the river. The seven native tribes that comprised the Lakota people controlled a vast inland empire and expected gifts from strangers who wished to navigate their rivers or to pass through their lands. According to Harry W. Fritz, "All earlier Missouri River travelers had warned of this powerful and aggressive tribe, determined to block free trade on the river. ... The Sioux were also expecting
16463-591: The expedition sent the keelboat back to St. Louis with a sample of specimens, some never-before-seen east of the Mississippi. One chief asked Lewis and Clark to provide a boat for passage through their national territory. The Americans quickly continued westward (upriver), and camped for the winter in the Mandan nation's territory. After the expedition had set-up camp, nearby tribal members came to visit in fair numbers, some staying all night. For several days, Lewis and Clark met in council with Mandan chiefs. Here they met
16626-936: The expedition, in modern Wyoming. Missouri River The Missouri River is a river in the Central and Mountain West regions of the United States . The nation's longest, it rises in the eastern Centennial Mountains of the Bitterroot Range of the Rocky Mountains of southwestern Montana , then flows east and south for 2,341 miles (3,767 km) before entering the Mississippi River north of St. Louis , Missouri . The river drains semi-arid watershed of more than 500,000 square miles (1,300,000 km ), which includes parts of ten U.S. states and two Canadian provinces. Although
16789-504: The expedition, shortly after the Louisiana Purchase of 1803, to explore and detail as much of the new territory as possible. Furthermore, he wished to find a practical travel route across the western half of the continent—directly avoiding the hot and desolate desert southwest —and to establish an American presence in the new lands before European powers attempted to establish claims of their own. The campaign's secondary objectives were scientific, economical and humanitarian, i.e., to document
16952-531: The farthest northwestern edge of the Columbia Gorge scenic area, Sandy River Delta is a popular location for hiking, dog walking, horseback riding, and waterfowl hunting . The 1.25 mile Confluence Trail is an ADA accessible trail that leads to a bird blind installed as part of the Confluence Project and designed by Maya Lin . Although off-leash dog walking is allowed (unlike in most of
17115-487: The final week of August, Lewis and Clark reached the edge of the Great Plains , a place abounding with elk , deer , bison , pronghorn and beavers . The Lewis and Clark Expedition established relations with two dozen Native American nations, without whose help the group would have risked starvation during the harsh winters and/or become hopelessly lost in the vast ranges of the Rocky Mountains. The Americans and
17278-423: The first European settlement of any kind on the Missouri River, near present-day Brunswick, Missouri , in 1723. The following year Bourgmont led an expedition to enlist Comanche support against the Spanish, who continued to show interest in taking over the Missouri. In 1725 Bourgmont brought the chiefs of several Missouri River tribes to visit France. There he was raised to the rank of nobility and did not accompany
17441-465: The first to sign up with the Corps of Discovery and was the only member to die during the expedition. He was buried at a bluff by the river, now named after him , in what is now Sioux City , Iowa . His burial site was marked with a cedar post on which was inscribed his name and day of death. 1 mile (2 km) up the river, the expedition camped at a small river which they named Floyd's River . During
17604-533: The first year of the journey was built near Pittsburgh, Pennsylvania , in the summer of 1803, to Lewis's specifications, and was completed on August 31. The vessel was immediately loaded with equipment and provisions. While in Pittsburgh, Lewis bought a Newfoundland dog , Seaman , to accompany them. Newfoundlands are amicable, large working dogs and good swimmers, lovers of water and commonly found on fishing boats, as they can assist in water rescues. Seaman proved
17767-578: The group in St. Charles, Missouri , then went up the Missouri River . The expedition crossed the Continental Divide of the Americas near the Lemhi Pass , eventually coming to the Columbia River , and the Pacific Ocean in 1805. The return voyage began on March 23, 1806, at Fort Clatsop , Oregon , ending six months later on September 23 of that year. President Thomas Jefferson commissioned
17930-556: The groups reunited, one of Clark's hunters, Pierre Cruzatte, mistook Lewis for an elk and fired, injuring Lewis in the thigh. Once together, the Corps was able to return home quickly via the Missouri River. They reached St. Louis on September 23, 1806. In March 1804, before the expedition began in May, the Spanish in New Mexico learned from General James Wilkinson that the Americans were encroaching on territory claimed by Spain. After
18093-525: The horse allowed them to travel greater distances, and thus facilitated hunting, communications, warfare, the Siouxoan genocide and expulsion of many tribes,and the abundance of trade. Once, tens of millions of American bison (commonly called buffalo), one of the keystone species of the Great Plains and the Ohio Valley, roamed the plains of the Missouri River basin. Most Native American nations in
18256-587: The immediate family circle, e.g. men in the Minnetaree and Mandan tribes would often take on a sister for a wife. Chastity among women was not held in high regard. Infant daughters were often sold by the father to men who were grown, usually for horses or mules. Women in Sioux nations were often bartered away for horses or other supplies; yet this was not practiced among the Shoshone nation, who held their women in higher regard. They witnessed that many of
18419-406: The indigenous peoples. Lewis and Clark were the first Americans to cross the Continental Divide, and the first Americans to see Yellowstone, enter into Montana, and produce an official description of these different regions. Their visit to the Pacific Northwest, maps, and proclamations of sovereignty with medals and flags were legal steps needed to claim title to each indigenous nation's lands under
18582-477: The industry continued well into the 1840s, but in others such as the Platte River valley, declines of the beaver population contributed to an earlier demise. The fur trade finally disappeared in the Great Plains around 1850, with the primary center of industry shifting to the Mississippi Valley and central Canada. Despite the demise of the once-prosperous trade, however, its legacy led to the opening of
18745-477: The journey. He was promoted to sergeant during the course of the expedition. Paul Allen edited a two-volume history of the Lewis and Clark expedition that was published in 1814, in Philadelphia , but without mention of the actual author, banker Nicholas Biddle . Even then, the complete report was not made public until more recently. The earliest authorized edition of the Lewis and Clark journals resides in
18908-452: The land rises about 10 feet per mile (1.9 m/km) from east to west. The elevation is less than 500 feet (150 m) at the eastern border of the watershed, but is over 3,000 feet (910 m) above sea level in many places at the base of the Rockies. The Missouri's drainage basin has highly variable weather and rainfall patterns, Overall, the watershed is defined by a continental climate with warm, wet summers and harsh, cold winters. Most of
19071-561: The land, decimating Native American populations. Left without their primary source of sustenance, many of the remaining indigenous people were forced onto resettlement areas and reservations, often at gunpoint. In May 1673, the French-Canadian explorer Louis Jolliet and the French explorer Jacques Marquette left the settlement of St. Ignace on Lake Huron and traveled down the Wisconsin and Mississippi Rivers, aiming to reach
19234-679: The lower Missouri valley is now a populous and highly productive agricultural and industrial region, heavy development has taken its toll on wildlife and fish populations as well as water quality. From the Rocky Mountains, three streams rise to form the headwaters of the Missouri River: The Missouri River officially starts at the confluence of the Jefferson and Madison in Missouri Headwaters State Park near Three Forks, Montana , and
19397-545: The lower Columbia River, Lewis and Clark repeatedly asked the local Chinooks about trading ships. They learned that Captain Samuel Hill had been there in early 1805. Miscommunication caused Clark to record the name as "Haley". Captain Hill returned in November 1805, and anchored about 10 miles (16 km) from Fort Clatsop. The Chinook told Hill about Lewis and Clark, but no direct contact was made. A Russian maritime expedition under statesman Nikolai Rezanov arrived at
19560-430: The lowest was 41,690 cu ft/s (1,181 m /s) in 2006. Extremes of the flow vary even further. The largest discharge ever recorded was over 750,000 cu ft/s (21,000 m /s) on July 31, 1993, during a historic flood . The lowest, a mere 602 cu ft/s (17.0 m /s) – caused by the formation of an ice dam – was measured on December 23, 1963. The Rocky Mountains of southwestern Montana at
19723-596: The lucrative fur trade of the Columbia River , convincing him of the importance of securing the territory posthaste. In Philadelphia , Israel Whelen , purveyor of public supplies, purchased necessities for the expedition with a list provided by Lewis; among the items found were 193 pounds of portable soup , 130 rolls of pigtail tobacco , 30 gallons of strong spirit of wine , a wide assortment of Native American presents, medical and surgical supplies, mosquito netting and oilskin bags. Two years into his presidency, Jefferson asked Congress to fund an expedition through
19886-500: The majority of the party voted to move their camp to the south side of the Columbia River near modern Astoria, Oregon . Both Sacagawea and the enslaved York participated in the vote. On the south side of the Columbia River, 2 miles (3 km) upstream on the west side of the Netul River (now Lewis and Clark River), they constructed Fort Clatsop . They did this not just for shelter and protection, but also to officially establish
20049-546: The most longstanding and violent of the American Indian Wars . During the 20th century, the Missouri River basin was extensively developed for irrigation, flood control, and the generation of hydroelectric power . Fifteen dams impound the main stem of the river, with hundreds more on tributaries. Meanders have been cut off and the river channelized to improve navigation, reducing its length by almost 200 miles (320 km) from pre-development times. Although
20212-534: The most successful of the Missouri Company expeditions was that of James MacKay and John Evans . The two set out along the Missouri, and established Fort Charles about 20 miles (32 km) south of present-day Sioux City as a winter camp in 1795. At the Mandan villages in North Dakota, they forcefully expelled several British traders, and while talking to the populace they pinpointed the location of
20375-505: The mouth of the Columbia River while Lewis and Clark were still there. Neither Rezanov nor Lewis and Clark knew about each other. Rezanov had come from Novo-Arkhangelsk (today Sitka, Alaska ), intending to establish a Russian agricultural colony to help with the perennial food shortages in Russian America , and made plans for a relocation of the capital of Russian America from Sitka to the lower Columbia River. But his ship, Juno ,
20538-436: The mouth of the Platte River. It is unclear exactly how far Bourgmont traveled beyond there; he described the blond-haired Mandans in his journals, so it is likely he reached as far as their villages in present-day North Dakota. Later that year, Bourgmont published The Route To Be Taken To Ascend The Missouri River , the first known document to use the name "Missouri River"; many of the names he gave to tributaries, mostly from
20701-442: The mouth, is 21,920 cu ft/s (621 m /s). This is from a drainage area of 186,400 sq mi (483,000 km ), or 35% of the total river basin. At Kansas City, 366.1 miles (589.2 km) from the mouth, the river's average flow is 55,400 cu ft/s (1,570 m /s). The river here drains about 484,100 sq mi (1,254,000 km ), representing about 91% of the entire basin. The lowermost gage with
20864-505: The native tribes that lived along them, are still in use today. The expedition's discoveries eventually found their way to cartographer Guillaume Delisle , who used the information to create a map of the lower Missouri. In 1718, Jean-Baptiste Le Moyne, Sieur de Bienville requested that the French government bestow upon Bourgmont the Cross of St. Louis because of his "outstanding service to France". Bourgmont had in fact been in trouble with
21027-566: The north bank of the Clearwater River, where the members of the expedition collected 65 horses in preparation to cross the Bitterroot Mountains , lying between modern-day Idaho and western Montana. However, the range was still covered in snow, which prevented the expedition from making the crossing. On April 11, while the Corps was waiting for the snow to diminish, Lewis's dog, Seaman , was stolen by Native Americans, but
21190-543: The north before crossing into North Dakota where the Yellowstone River , its greatest tributary by volume, joins from the southwest. At the confluence, the Yellowstone is actually the larger river. The Missouri then meanders east past Williston and into Lake Sakakawea , the reservoir formed by Garrison Dam . Below the dam the Missouri receives the Knife River from the west and flows south to Bismarck ,
21353-537: The northwest in general. The expedition was to make native people understand that their lands now belonged to the United States and that "their great father" in Washington was now their sovereign. The expedition encountered many different native nations and tribes along the way, many of whom offered their assistance, providing the expedition with their knowledge of the wilderness and with the acquisition of food. The expedition had blank leather-bound journals and ink for
21516-526: The one which produced the 1972 Black Hills flood through Rapid City, South Dakota . Winter temperatures in the northern and western portions of the basin typically drop to −20 °F (−28.9 °C) or lower every winter with extremes as low as −60 °F (−51.1 °C), while summer highs occasionally exceed 100 °F (37.8 °C) in all areas except the higher elevations of Montana, Wyoming and Colorado. Extreme maxima — almost all prior to 1960 — have exceeded 115 °F (46.1 °C) in all US states in
21679-475: The other party and was also involved with diplomatic affairs with another tribe. Consequently, both chiefs were offered a few gifts, but neither was satisfied and they wanted some gifts for their warriors and tribe. At that point, some of the warriors from the Partisan tribe took hold of their boat and one of the oars. Lewis took a firm stand, ordering a display of force and presenting arms; Captain Clark brandished his sword and threatened violent reprisal. Just before
21842-483: The potion, she delivered a healthy boy who was given the name Jean Baptiste Charbonneau . When the expedition reached Marias River, on June 16, 1805, Sacagawea became dangerously ill. She was able to find some relief by drinking mineral water from the sulphur spring that fed into the river. Though she has been discussed in literature frequently, much of the information is exaggeration or fiction. Scholars say she did notice some geographical features, but "Sacagawea ...
22005-467: The present day. Much of this sediment is derived from the river's floodplain , also called the meander belt; every time the river changed course, it would erode tons of soil and rocks from its banks. However, damming and channeling the river has kept it from reaching its natural sediment sources along most of its course. Reservoirs along the Missouri trap roughly 36.4 million short tons (33.0 million metric tons) of sediment each year. Despite this,
22168-477: The purported transcontinental journey of Moncacht-Apé by the same route about a century before. Jefferson had a copy of Le Page's book in his library detailing Moncacht-Apé's itinerary, and Lewis carried a copy with him during the expedition. Le Page's description of Moncacht-Apé's route across the continent neglects to mention the need to cross the Rocky Mountains , and it might be the source of Lewis and Clark's mistaken belief that they could easily carry boats from
22331-473: The purpose of recording such encounters, as well as for scientific and geological information. They were also provided with various gifts of medals, ribbons, needles, mirrors, and other articles which were intended to ease any tensions when negotiating their passage with the various Native American chiefs whom they would encounter along their way. Many of the tribes had friendly experiences with British and French fur traders in various isolated encounters along
22494-449: The purposes of commerce." He also placed special importance on declaring US sovereignty over the land occupied by the many different Native American tribes along the Missouri River , and getting an accurate sense of the resources in the recently completed Louisiana Purchase. The expedition made notable contributions to science, but scientific research was not the main goal of the mission. For years, Thomas Jefferson read accounts about
22657-515: The remaining property north of I-84 in 1991. The area's management use plan has focused on low impact, non-motorized recreational use at the gateway to the Gorge, in addition to habitat restoration for native plants and wildlife. A 1930s dike was removed in 2013 by the Corps of Engineers to restore the free flow of the river, and efforts have been made to reduce the prevalence of invasive species like Himalayan blackberry and reed canarygrass . As
22820-424: The reservoirs dramatically reduce peak flows and increase low flows. Evaporation from reservoirs significantly reduces the river's runoff, causing an annual loss of over 3 million acre-feet (3.7 km ) from mainstem reservoirs alone. The United States Geological Survey operates fifty-one stream gauges along the Missouri River. The river's average discharge at Bismarck, 1,314.5 miles (2,115.5 km) from
22983-577: The river it was largely populated by slave-owning southerners following the Boone's Lick Road . The major trails for the opening of the American West all have their starting points on the river, including the California , Mormon , Oregon , and Santa Fe trails. The first westward leg of the Pony Express was a ferry across the Missouri at St. Joseph, Missouri . Similarly, most emigrants arrived at
23146-493: The river still transports more than half the total silt that empties into the Gulf of Mexico; the Mississippi River Delta , formed by sediment deposits at the mouth of the Mississippi, constitutes a majority of sediments carried by the Missouri. Archaeological evidence, especially in Missouri, suggests that human beings first inhabited the watershed of the Missouri River between 10,000 and 12,000 years ago at
23309-498: The river town of Independence, Missouri , to their various destinations in the American West from the 1830s to the 1860s. These people had many reasons to embark on this strenuous year-long journey – economic crisis, and later gold strikes including the California Gold Rush , for example. For most, the route took them up the Missouri to Omaha, Nebraska, where they would set out along the Platte River , which flows from
23472-416: The search for possible living remnants. Lewis, however, was not ignorant of science, having demonstrated a marked capacity to learn, especially with Jefferson as his teacher. At Monticello , Jefferson possessed an enormous library on the subject of North American geography, to which Lewis had full access. He spent time consulting maps and books, as well as conferring with Jefferson. The keelboat used for
23635-453: The sediments that now underlie much of the drainage basin of the Missouri River. This Laramide uplift caused the sea to retreat and laid the framework for a vast drainage system of rivers flowing from the Rocky and Appalachian Mountains , the predecessor of the modern-day Mississippi watershed. The Laramide Orogeny is essential to modern Missouri River hydrology , as snow and ice melt from
23798-430: The situation erupted into a violent confrontation, Black Buffalo ordered his warriors to back off. The captains were able to negotiate their passage without further incident with the aid of better gifts and a bottle of whiskey. During the next two days, the expedition made camp not far from Black Buffalo's tribe. Similar incidents occurred when they tried to leave, but trouble was averted with gifts of tobacco. As
23961-614: The size of the Canadian province of Quebec , the watershed encompasses most of the central Great Plains, stretching from the Rocky Mountains in the west to the Mississippi River Valley in the east and from the southern extreme of western Canada to the border of the Arkansas River watershed. Compared with the Mississippi River above their confluence, the Missouri is twice as long and drains an area three times as large. The Missouri accounts for 45 percent of
24124-609: The struggle, the soldiers killed two Blackfeet men. Lewis, George Drouillard , and the Field brothers fled over 100 miles (160 kilometres) in a day before they camped again. Meanwhile, Clark had entered the Crow tribe 's territory. In the night, half of Clark's horses disappeared, but not a single Crow had been seen. Lewis and Clark stayed separated until they reached the confluence of the Yellowstone and Missouri Rivers on August 11. As
24287-519: The treaty and in 1800 secretly returned Louisiana to Napoleonic France in the Third Treaty of San Ildefonso . This transfer was so secret that the Spanish continued to administer the territory. In 1801, Spain restored rights to use the Mississippi and New Orleans to the United States. Fearing that the cutoffs could occur again, President Thomas Jefferson proposed to buy the port of New Orleans from France for $ 10 million. Instead, faced with
24450-533: The upper Mississippi, drain most of the area bordering the eastern side of the Missouri River basin. Finally, on the south, the Ozark Mountains and other low divides through central Missouri, Kansas and Colorado separate the Missouri watershed from those of the White River and Arkansas River, also tributaries of the Mississippi River. Over 95 significant tributaries and hundreds of smaller ones feed
24613-459: The various fur enterprises, namely Hudson's Bay . Fort Raymond was later replaced by Fort Lisa at the confluence of the Missouri and Yellowstone in North Dakota; a second fort also called Fort Lisa was built downstream on the Missouri River in Nebraska. In 1809 the St. Louis Missouri Fur Company was founded by Lisa in conjunction with William Clark and Pierre Choteau, among others. In 1828,
24776-442: The watershed receives an average of 8 to 10 inches (200 to 250 mm) of precipitation each year. However, the westernmost portions of the basin in the Rockies as well as southeastern regions in Missouri may receive as much as 40 inches (1,000 mm). The vast majority of precipitation occurs in summer in most of the lower and middle basin, although the upper basin is known for short-lived but intense summer thunderstorms such as
24939-447: The watershed's southeastern portion – include Omaha, Nebraska , north of the confluence of the Missouri and Platte Rivers; Kansas City, Missouri – Kansas City, Kansas , at the confluence of the Missouri with the Kansas River; and the St. Louis metropolitan area, south of the Missouri River just below the latter's mouth, on the Mississippi. In contrast, the northwestern part of the watershed
25102-416: The watershed, with most leading a nomadic lifestyle and dependent on enormous bison herds that roamed through the Great Plains . The first Europeans encountered the river in the late seventeenth century, and the region passed through Spanish and French hands before becoming part of the United States through the Louisiana Purchase . The Missouri River was one of the main routes for the westward expansion of
25265-535: The west. Downstream, it begins to define the border between the states of Nebraska and Missouri , then flows between the states of Missouri and Kansas . The Missouri swings east at Kansas City , where the Kansas River enters from the west, and so on into north-central Missouri. To the east of Kansas City, the Missouri receives, on the left side, the Grand River . It passes south of Columbia and receives
25428-542: Was a Shoshone Native American woman who arrived with her husband and owner Toussaint Charbonneau on the expedition to the Pacific Ocean. On February 11, 1805, a few weeks after her first contact with the expedition, Sacagawea went into labor which was slow and painful, so the Frenchman Charbonneau suggested she be given a potion of rattlesnake's rattle to aid in her delivery. Lewis happened to have some snake's rattle with him. A short time after administering
25591-512: Was covering 70 to 80 miles (110 to 130 km) a day and Vial's attempt to intercept them was unsuccessful. The Lewis and Clark Expedition gained an understanding of the geography of the Northwest and produced the first accurate maps of the area. During the journey, Lewis and Clark drew about 140 maps. Stephen Ambrose says the expedition "filled in the main outlines" of the area. The expedition documented natural resources and plants that had been previously unknown to Euro-Americans, though not to
25754-675: Was hauled overland, most transport to and from the gold fields was done through the Missouri and Kansas Rivers, as well as the Snake River in western Wyoming and the Bear River in Utah, Idaho, and Wyoming. It is estimated that of the passengers and freight hauled from the Midwest to Montana, over 80 percent were transported by boat, a journey that took 150 days in the upstream direction. A route more directly west into Colorado lay along
25917-545: Was impossible to find a character who to a complete science in botany, natural history, mineralogy & astronomy, joined the firmness of constitution & character, prudence, habits adapted to the woods & a familiarity with the Indian manners and character, requisite for this undertaking. All the latter qualifications Capt. Lewis has. In 1803, Jefferson sent Lewis to Philadelphia to study medicinal cures under Benjamin Rush ,
26080-499: Was not the guide for the Expedition, she was important to them as an interpreter and in other ways." The sight of a woman and her infant son would have been reassuring to some indigenous nations, and she played an important role in diplomatic relations by talking to chiefs, easing tensions, and giving the impression of a peaceful mission. In his writings, Meriwether Lewis presented a somewhat negative view of her, though Clark had
26243-594: Was retrieved shortly. Worried that other such acts might follow, Lewis warned the chief that any other wrongdoing or mischievous acts would result in instant death. On July 3, before crossing the Continental Divide, the Corps split into two teams so Lewis could explore the Marias River . Lewis's group of four met some men from the Blackfeet nation. During the night, the Blackfeet tried to steal their weapons. In
26406-457: Was such that the water was made muddy by it and could not clear itself." They recorded Pekitanoui or Pekistanoui as the local name for the Missouri. However, the party never explored the Missouri beyond its mouth, nor did they linger in the area. In addition, they later learned that the Mississippi drained into the Gulf of Mexico and not the Pacific as they had originally presumed; the expedition turned back about 440 miles (710 km) short of
26569-471: Was unable to cross the Columbia Bar . So Rezanov went to California instead, setting in motion a process that eventually led to the founding of Fort Ross, California . Lewis was determined to remain at the fort until April 1, but was still anxious to move out at the earliest opportunity. By March 22, the stormy weather had subsided and the following morning, on March 23, 1806, the journey home began. The Corps began their journey homeward using canoes to ascend
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