140-573: The Liberty Memorial Bridge , across the Missouri River connecting the "twin cities" of Bismarck and Mandan, North Dakota , also known as Missouri River Bridge , was a Warren-Turner through truss structure that was built in 1920. It was listed on the National Register of Historic Places in 1997. It was replaced by a new bridge in 2008 and removed from the National Register in 2009. It
280-737: A greenhouse gas . According to the World Commission on Dams report, where the reservoir is large compared to the generating capacity (less than 100 watts per square metre of surface area) and no clearing of the forests in the area was undertaken prior to impoundment of the reservoir, greenhouse gas emissions from the reservoir may be higher than those of a conventional oil-fired thermal generation plant. In boreal reservoirs of Canada and Northern Europe, however, greenhouse gas emissions are typically only 2% to 8% of any kind of conventional fossil-fuel thermal generation. A new class of underwater logging operation that targets drowned forests can mitigate
420-463: A low-head hydro power plant with hydrostatic head of few meters to few tens of meters can be classified either as an SHP or an LHP. The other distinction between SHP and LHP is the degree of the water flow regulation: a typical SHP primarily uses the natural water discharge with very little regulation in comparison to an LHP. Therefore, the term SHP is frequently used as a synonym for the run-of-the-river power plant . The largest power producers in
560-523: 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
700-660: 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
840-421: A flood and fail. Changes in the amount of river flow will correlate with the amount of energy produced by a dam. Lower river flows will reduce the amount of live storage in a reservoir therefore reducing the amount of water that can be used for hydroelectricity. The result of diminished river flow can be power shortages in areas that depend heavily on hydroelectric power. The risk of flow shortage may increase as
980-538: A key element for creating secure and clean electricity supply systems. A hydroelectric power station that has a dam and reservoir is a flexible source, since the amount of electricity produced can be increased or decreased in seconds or minutes in response to varying electricity demand. Once a hydroelectric complex is constructed, it produces no direct waste, and almost always emits considerably less greenhouse gas than fossil fuel -powered energy plants. However, when constructed in lowland rainforest areas, where part of
1120-578: 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 ,
1260-809: A large natural height difference between two waterways, such as a waterfall or mountain lake. A tunnel is constructed to take water from the high reservoir to the generating hall built in a cavern near the lowest point of the water tunnel and a horizontal tailrace taking water away to the lower outlet waterway. A simple formula for approximating electric power production at a hydroelectric station is: P = − η ( m ˙ g Δ h ) = − η ( ( ρ V ˙ ) g Δ h ) {\displaystyle P=-\eta \ ({\dot {m}}g\ \Delta h)=-\eta \ ((\rho {\dot {V}})\ g\ \Delta h)} where Efficiency
1400-451: A larger amount of methane than those in temperate areas. Like other non-fossil fuel sources, hydropower also has no emissions of sulfur dioxide, nitrogen oxides, or other particulates. Reservoirs created by hydroelectric schemes often provide facilities for water sports , and become tourist attractions themselves. In some countries, aquaculture in reservoirs is common. Multi-use dams installed for irrigation support agriculture with
1540-419: 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
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#17330861564761680-586: A positive risk adjusted return, unless appropriate risk management measures are put in place. While many hydroelectric projects supply public electricity networks, some are created to serve specific industrial enterprises. Dedicated hydroelectric projects are often built to provide the substantial amounts of electricity needed for aluminium electrolytic plants, for example. The Grand Coulee Dam switched to support Alcoa aluminium in Bellingham, Washington , United States for American World War II airplanes before it
1820-545: A relatively constant water supply. Large hydro dams can control floods, which would otherwise affect people living downstream of the project. Managing dams which are also used for other purposes, such as irrigation , is complicated. In 2021 the IEA called for "robust sustainability standards for all hydropower development with streamlined rules and regulations". Large reservoirs associated with traditional hydroelectric power stations result in submersion of extensive areas upstream of
1960-470: A result of climate change . One study from the Colorado River in the United States suggest that modest climate changes, such as an increase in temperature in 2 degree Celsius resulting in a 10% decline in precipitation, might reduce river run-off by up to 40%. Brazil in particular is vulnerable due to its heavy reliance on hydroelectricity, as increasing temperatures, lower water flow and alterations in
2100-413: 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
2240-448: A small TV/radio). Even smaller turbines of 200–300 W may power a few homes in a developing country with a drop of only 1 m (3 ft). A Pico-hydro setup is typically run-of-the-river , meaning that dams are not used, but rather pipes divert some of the flow, drop this down a gradient, and through the turbine before returning it to the stream. An underground power station is generally used at large facilities and makes use of
2380-455: A source of low-cost renewable energy. Alternatively, small hydro projects may be built in isolated areas that would be uneconomic to serve from a grid, or in areas where there is no national electrical distribution network. Since small hydro projects usually have minimal reservoirs and civil construction work, they are seen as having a relatively low environmental impact compared to large hydro. This decreased environmental impact depends strongly on
2520-414: A start-up time of the order of a few minutes. Although battery power is quicker its capacity is tiny compared to hydro. It takes less than 10 minutes to bring most hydro units from cold start-up to full load; this is quicker than nuclear and almost all fossil fuel power. Power generation can also be decreased quickly when there is a surplus power generation. Hence the limited capacity of hydropower units
2660-581: A total of 1,500 terawatt-hours (TWh) of electrical energy in one full cycle" which was "about 170 times more energy than the global fleet of pumped storage hydropower plants". Battery storage capacity is not expected to overtake pumped storage during the 2020s. When used as peak power to meet demand, hydroelectricity has a higher value than baseload power and a much higher value compared to intermittent energy sources such as wind and solar. Hydroelectric stations have long economic lives, with some plants still in service after 50–100 years. Operating labor cost
2800-643: 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
2940-419: 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
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#17330861564763080-448: Is hydroelectric power on a scale serving a small community or industrial plant. The definition of a small hydro project varies but a generating capacity of up to 10 megawatts (MW) is generally accepted as the upper limit. This may be stretched to 25 MW and 30 MW in Canada and the United States. Small hydro stations may be connected to conventional electrical distribution networks as
3220-862: 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
3360-627: Is also usually low, as plants are automated and have few personnel on site during normal operation. Where a dam serves multiple purposes, a hydroelectric station may be added with relatively low construction cost, providing a useful revenue stream to offset the costs of dam operation. It has been calculated that the sale of electricity from the Three Gorges Dam will cover the construction costs after 5 to 8 years of full generation. However, some data shows that in most countries large hydropower dams will be too costly and take too long to build to deliver
3500-466: Is highest in the winter when solar energy is at a minimum. Pico hydro is hydroelectric power generation of under 5 kW . It is useful in small, remote communities that require only a small amount of electricity. For example, the 1.1 kW Intermediate Technology Development Group Pico Hydro Project in Kenya supplies 57 homes with very small electric loads (e.g., a couple of lights and a phone charger, or
3640-445: Is initially produced during construction of the project, and some methane is given off annually by reservoirs, hydro has one of the lowest lifecycle greenhouse gas emissions for electricity generation. The low greenhouse gas impact of hydroelectricity is found especially in temperate climates . Greater greenhouse gas emission impacts are found in the tropical regions because the reservoirs of power stations in tropical regions produce
3780-583: 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
3920-551: 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,
4060-462: Is not an energy source, and appears as a negative number in listings. Run-of-the-river hydroelectric stations are those with small or no reservoir capacity, so that only the water coming from upstream is available for generation at that moment, and any oversupply must pass unused. A constant supply of water from a lake or existing reservoir upstream is a significant advantage in choosing sites for run-of-the-river. A tidal power station makes use of
4200-452: Is not generally used to produce base power except for vacating the flood pool or meeting downstream needs. Instead, it can serve as backup for non-hydro generators. The major advantage of conventional hydroelectric dams with reservoirs is their ability to store water at low cost for dispatch later as high value clean electricity. In 2021, the IEA estimated that the "reservoirs of all existing conventional hydropower plants combined can store
4340-410: Is often higher (that is, closer to 1) with larger and more modern turbines. Annual electric energy production depends on the available water supply. In some installations, the water flow rate can vary by a factor of 10:1 over the course of a year. Hydropower is a flexible source of electricity since stations can be ramped up and down very quickly to adapt to changing energy demands. Hydro turbines have
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4480-464: 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
4620-513: Is the only Warren-Turner through truss bridge ever built in the state. [REDACTED] Media related to Liberty Memorial Bridge at Wikimedia Commons This article about a property in North Dakota on the National Register of Historic Places is a stub . You can help Misplaced Pages by expanding it . This article about a bridge in North Dakota is a stub . You can help Misplaced Pages by expanding it . Missouri River The Missouri River
4760-756: 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
4900-686: 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
5040-657: The Bonneville Dam in 1937 and being recognized by the Flood Control Act of 1936 as the premier federal flood control agency. Hydroelectric power stations continued to become larger throughout the 20th century. Hydropower was referred to as "white coal". Hoover Dam 's initial 1,345 MW power station was the world's largest hydroelectric power station in 1936; it was eclipsed by the 6,809 MW Grand Coulee Dam in 1942. The Itaipu Dam opened in 1984 in South America as
5180-560: 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
5320-530: 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
5460-533: The Industrial Revolution would drive development as well. In 1878, the world's first hydroelectric power scheme was developed at Cragside in Northumberland , England, by William Armstrong . It was used to power a single arc lamp in his art gallery. The old Schoelkopf Power Station No. 1 , US, near Niagara Falls , began to produce electricity in 1881. The first Edison hydroelectric power station,
5600-778: The International Exhibition of Hydropower and Tourism , with over one million visitors 1925. By 1920, when 40% of the power produced in the United States was hydroelectric, the Federal Power Act was enacted into law. The Act created the Federal Power Commission to regulate hydroelectric power stations on federal land and water. As the power stations became larger, their associated dams developed additional purposes, including flood control , irrigation and navigation . Federal funding became necessary for large-scale development, and federally owned corporations, such as
5740-505: 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
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5880-683: 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
6020-536: 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,
6160-532: 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;
6300-579: 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,
6440-487: 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
6580-605: The Tennessee Valley Authority (1933) and the Bonneville Power Administration (1937) were created. Additionally, the Bureau of Reclamation which had begun a series of western US irrigation projects in the early 20th century, was now constructing large hydroelectric projects such as the 1928 Hoover Dam . The United States Army Corps of Engineers was also involved in hydroelectric development, completing
6720-696: 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
6860-569: The Vulcan Street Plant , began operating September 30, 1882, in Appleton, Wisconsin , with an output of about 12.5 kilowatts. By 1886 there were 45 hydroelectric power stations in the United States and Canada; and by 1889 there were 200 in the United States alone. At the beginning of the 20th century, many small hydroelectric power stations were being constructed by commercial companies in mountains near metropolitan areas. Grenoble , France held
7000-418: 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
7140-527: 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
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#17330861564767280-693: 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
7420-506: The potential energy of dammed water driving a water turbine and generator . The power extracted from the water depends on the volume and on the difference in height between the source and the water's outflow. This height difference is called the head . A large pipe (the " penstock ") delivers water from the reservoir to the turbine. This method produces electricity to supply high peak demands by moving water between reservoirs at different elevations. At times of low electrical demand,
7560-400: The water frame , and continuous production played a significant part in the development of the factory system, with modern employment practices. In the 1840s, hydraulic power networks were developed to generate and transmit hydro power to end users. By the late 19th century, the electrical generator was developed and could now be coupled with hydraulics. The growing demand arising from
7700-472: 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,
7840-565: 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
7980-523: 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
8120-663: 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 ,
8260-576: 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
8400-532: 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
8540-463: The IEA released a main-case forecast of 141 GW generated by hydropower over 2022–2027, which is slightly lower than deployment achieved from 2017–2022. Because environmental permitting and construction times are long, they estimate hydropower potential will remain limited, with only an additional 40 GW deemed possible in the accelerated case. In 2021 the IEA said that major modernisation refurbishments are required. Most hydroelectric power comes from
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#17330861564768680-403: 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
8820-461: 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
8960-407: 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
9100-766: 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
9240-426: 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,
9380-449: 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
9520-595: 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
9660-399: 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,
9800-418: 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
9940-404: 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,
10080-455: 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
10220-448: 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,
10360-564: 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,
10500-478: 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
10640-578: 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,
10780-623: 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
10920-419: 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,
11060-419: 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
11200-577: 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
11340-462: 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
11480-464: The ability to transport particles heavier than itself downstream. This has a negative effect on dams and subsequently their power stations, particularly those on rivers or within catchment areas with high siltation. Siltation can fill a reservoir and reduce its capacity to control floods along with causing additional horizontal pressure on the upstream portion of the dam. Eventually, some reservoirs can become full of sediment and useless or over-top during
11620-409: 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
11760-595: The balance between stream flow and power production. Micro hydro means hydroelectric power installations that typically produce up to 100 kW of power. These installations can provide power to an isolated home or small community, or are sometimes connected to electric power networks. There are many of these installations around the world, particularly in developing nations as they can provide an economical source of energy without purchase of fuel. Micro hydro systems complement photovoltaic solar energy systems because in many areas water flow, and thus available hydro power,
11900-431: 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
12040-456: 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
12180-410: 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
12320-675: 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
12460-580: 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
12600-401: 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
12740-456: 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,
12880-404: The daily rise and fall of ocean water due to tides; such sources are highly predictable, and if conditions permit construction of reservoirs, can also be dispatchable to generate power during high demand periods. Less common types of hydro schemes use water's kinetic energy or undammed sources such as undershot water wheels . Tidal power is viable in a relatively small number of locations around
13020-505: The dams, sometimes destroying biologically rich and productive lowland and riverine valley forests, marshland and grasslands. Damming interrupts the flow of rivers and can harm local ecosystems, and building large dams and reservoirs often involves displacing people and wildlife. The loss of land is often exacerbated by habitat fragmentation of surrounding areas caused by the reservoir. Hydroelectric projects can be disruptive to surrounding aquatic ecosystems both upstream and downstream of
13160-535: 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
13300-430: 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
13440-482: 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
13580-690: The effect of forest decay. Another disadvantage of hydroelectric dams is the need to relocate the people living where the reservoirs are planned. In 2000, the World Commission on Dams estimated that dams had physically displaced 40–80 million people worldwide. Because large conventional dammed-hydro facilities hold back large volumes of water, a failure due to poor construction, natural disasters or sabotage can be catastrophic to downriver settlements and infrastructure. During Typhoon Nina in 1975 Banqiao Dam in Southern China failed when more than
13720-630: 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
13860-399: The excess generation capacity is used to pump water into the higher reservoir, thus providing demand side response . When the demand becomes greater, water is released back into the lower reservoir through a turbine. In 2021 pumped-storage schemes provided almost 85% of the world's 190 GW of grid energy storage and improve the daily capacity factor of the generation system. Pumped storage
14000-423: 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
14140-534: The forest is inundated, substantial amounts of greenhouse gases may be emitted. Construction of a hydroelectric complex can have significant environmental impact, principally in loss of arable land and population displacement. They also disrupt the natural ecology of the river involved, affecting habitats and ecosystems, and siltation and erosion patterns. While dams can ameliorate the risks of flooding, dam failure can be catastrophic. In 2021, global installed hydropower electrical capacity reached almost 1,400 GW,
14280-517: The gold rush period, which led to the large-scale settlement of the Rocky Mountains region and eastern Great Basin . Hydroelectricity Hydroelectricity , or hydroelectric power , is electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity , almost 4,210 TWh in 2023, which is more than all other renewable sources combined and also more than nuclear power . Hydropower can provide large amounts of low-carbon electricity on demand, making it
14420-506: The highest among all renewable energy technologies. Hydroelectricity plays a leading role in countries like Brazil, Norway and China. but there are geographical limits and environmental issues. Tidal power can be used in coastal regions. China added 24 GW in 2022, accounting for nearly three-quarters of global hydropower capacity additions. Europe added 2 GW, the largest amount for the region since 1990. Meanwhile, globally, hydropower generation increased by 70 TWh (up 2%) in 2022 and remains
14560-514: 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
14700-469: 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
14840-452: 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
14980-549: 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
15120-519: The largest renewable energy source, surpassing all other technologies combined. Hydropower has been used since ancient times to grind flour and perform other tasks. In the late 18th century hydraulic power provided the energy source needed for the start of the Industrial Revolution . In the mid-1700s, French engineer Bernard Forest de Bélidor published Architecture Hydraulique , which described vertical- and horizontal-axis hydraulic machines, and in 1771 Richard Arkwright 's combination of water power ,
15260-731: The largest, producing 14 GW , but was surpassed in 2008 by the Three Gorges Dam in China at 22.5 GW . Hydroelectricity would eventually supply some countries, including Norway , Democratic Republic of the Congo , Paraguay and Brazil , with over 85% of their electricity. In 2021 the International Energy Agency (IEA) said that more efforts are needed to help limit climate change . Some countries have highly developed their hydropower potential and have very little room for growth: Switzerland produces 88% of its potential and Mexico 80%. In 2022,
15400-648: 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
15540-430: 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
15680-537: 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
15820-465: 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
15960-436: 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
16100-442: 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
16240-501: 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
16380-529: 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 ,
16520-526: 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
16660-633: The plant site. Generation of hydroelectric power changes the downstream river environment. Water exiting a turbine usually contains very little suspended sediment, which can lead to scouring of river beds and loss of riverbanks. The turbines also will kill large portions of the fauna passing through, for instance 70% of the eel passing a turbine will perish immediately. Since turbine gates are often opened intermittently, rapid or even daily fluctuations in river flow are observed. Drought and seasonal changes in rainfall can severely limit hydropower. Water may also be lost by evaporation. When water flows it has
16800-467: 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,
16940-450: The rainfall regime, could reduce total energy production by 7% annually by the end of the century. Lower positive impacts are found in the tropical regions. In lowland rainforest areas, where inundation of a part of the forest is necessary, it has been noted that the reservoirs of power plants produce substantial amounts of methane . This is due to plant material in flooded areas decaying in an anaerobic environment and forming methane,
17080-424: 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
17220-561: 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
17360-483: 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
17500-489: 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
17640-449: 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
17780-597: 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
17920-513: 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
18060-520: 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
18200-498: 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,
18340-442: 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
18480-444: 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
18620-530: 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
18760-523: 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
18900-524: The world are hydroelectric power stations, with some hydroelectric facilities capable of generating more than double the installed capacities of the current largest nuclear power stations . Although no official definition exists for the capacity range of large hydroelectric power stations, facilities from over a few hundred megawatts are generally considered large hydroelectric facilities. Currently, only seven facilities over 10 GW ( 10,000 MW ) are in operation worldwide, see table below. Small hydro
19040-539: The world. The classification of hydropower plants starts with two top-level categories: The classification of a plant as an SHP or LHP is primarily based on its nameplate capacity , the threshold varies by the country, but in any case a plant with the capacity of 50 MW or more is considered an LHP. As an example, for China, SHP power is below 25 MW, for India - below 15 MW, most of Europe - below 10 MW. The SHP and LHP categories are further subdivided into many subcategories that are not mutually exclusive. For example,
19180-420: Was "the first roadway bridge constructed across the Missouri River, one of the most important waterways in the state" of North Dakota. Not only did the bridge connect the 'twin cities' of Bismarck and Mandan, but for the first time eastern and western North Dakota were joined by a continuous roadway. Moreover, the bridge was a final link in the coast-to-coast roadway later designated as U.S. Highway 10 ." Also, it
19320-573: Was allowed to provide irrigation and power to citizens (in addition to aluminium power) after the war. In Suriname , the Brokopondo Reservoir was constructed to provide electricity for the Alcoa aluminium industry. New Zealand 's Manapouri Power Station was constructed to supply electricity to the aluminium smelter at Tiwai Point . Since hydroelectric dams do not use fuel, power generation does not produce carbon dioxide . While carbon dioxide
19460-654: 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
19600-457: 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
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