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River

The Murray River in Australia.

A river is a large natural waterway. The source of a river may be a lake, a spring, or a collection of small streams, known as headwaters. From their source, all rivers flow downhill, typically terminating in the ocean. The mouth, or lower end of a river is known as its base level. A river's water is normally confined to a channel, made up of a stream bed between banks. Most rainfall on land passes through a river on its way to the ocean. Smaller side streams that join a river are tributaries. The scientific term for any flowing natural waterway is a stream; so in technical language, the term river is just a shorthand way to refer to a large stream.

Topography

A river conducts water by constantly flowing perpendicular to the elevation curve of its bed, thereby converting the positional energy of the water into kinetic energy. Where a river flows over relatively flat areas, the river will meander: start to form loops and snake through the plain by eroding the river banks. Sometimes the river will cut off a loop, shortening the channel and forming an oxbow lake from the cut off section. Rivers that carry large amounts of sediment develop conspicuous deltas at their mouths. Rivers whose mouths are in saline tidal waters may form estuaries.

Over time, rivers cut away at their beds, eventually forming a more gradual gradient.

There are 4 main types of rivers. These types are:

  • Youthful river - a river with a steep gradient that has very few tributaries and flows quickly. Its channels erode deeper rather than wider.
  • Mature river - a river with a gradient that is less steep than those of youthful rivers and flows more slowly than youthful rivers. A mature river is fed by many tributaries and has more discharge than a youthful river. Its channels erode wider rather than deeper.
  • Old river - a river with a low gradient and low erosive energy. Old rivers are characterized by flood plains.
  • Rejuvenated river - a river with a gradient that is raised by the earth's movement.
A waterfall on the Ova da Fedoz, Switzerland.

Where a river descends quickly over sloped topography, rapids with whitewater or even waterfalls occur. Rapids are often used for recreational purposes (see Whitewater kayaking). Waterfalls are sometimes used as sources of energy, via watermills and hydroelectric plants.

Rivers begin at their source in higher ground, either rising from a spring, forming from glacial meltwater, flowing from a body of water such as a lake, or simply from damp, boggy places where the soil is waterlogged. They end at their base level where they flow into a larger body of water, the sea, a lake, or as a tributary to another (usually larger) river. In arid areas rivers sometimes end by losing water to evaporation and percolation into dry, porous material such as sand, soil, or pervious rock. The area drained by a river and its tributaries is called its watershed or catchment basin. (Watershed is also used however to mean a boundary between catchment basins.)

Starting at the mouth of the river and following it upstream as it branches again and again the resulting river network forms a dendritic (tree-like) structure that is an example of a natural random fractal.

Biology

The flora and fauna of rivers are much different from those of the ocean because the water is fresh (non-salty). Living things in a river must be adapted to the current of the moving water.

Pollution

Human pollution of rivers is common, and very few rivers in the world today are clean of man-made substances. The most common point source of pollutant is probably sewage piped into rivers, but chemical pollution is also common, and industrial accidents (and/or negligence) account for significant destruction of riparian biomes. Heated water dumped into rivers by power plants and factories also affects river life. Non-point source pollutants such as diffuse pollution from agriculture, urbanisation and forestry and now being recognised as one of the more damaging sources of pollutants in the developed world.

Navigation

The Rhine is the busiest river in the world for transport ships. Inland vessels use the river to reach the major cities in Germany, Eastern France and Switzerland to transport bulk goods, liquids, containers AND passengers into the hinterland of the Port of Rotterdam and the ports of Amsterdam and Antwerp. Many millions of tons of goods are transported upstream yearly from these three sea ports to the industries near Nijmegen, Duisburg, Düsseldorf, Neuss, Köln, Koblenz, Mainz, Mannheim, Karlsruhe, Strasbourg, Colmar, Mulhouse and Basel.

The lower part of the river is navigable for the largest inland vessels (up to 135 meters long and 17 meters wide) with an available depth of more than 2,50 even at the lower water levels. The further upstream, the more depth restrictions: at low water periods draught of ships is often limited to 1,90 m. for the stretch around Bingen (between the mouths of the Mosel and the Main).

Upstream from Karlsruhe the Rhine is the border between France and Germany. The French have canalized the river by means of a series of hydropower dams and double ship locks, thus ensuring a year round navigable depth of 3.50 meters. (Source: NoorderSoft Waterways Database)

Dams

In places where the elevation changes of a river are great, dams for hydroelectric plants and other purposes are often built. This disrupts the natural flow of the river, and creates a lake behind the dam. Often the building of dams affects the whole of the river, even the part above the dam, as migrating fish are hindered (see fish ladder), waterflow is no longer bounded by seasonal changes and sediment flow is blocked. Dams are useful in many ways, such as providing HEP, acting as regulator of river flow so as to regulate the occurrence of flooding, which is especially important to wet-rice agriculture, and also to improve navigation and transport on the river. Often, dams such as Hoover Dam along Colorado River become famous tourist attractions. Critics of dams especially 'Green' advocates, argue that dams remove upper-river biodiversity such as through deforestation and forced migration of rural villages and indigenous tribes. Furthermore, trapping of river sediments behind the dams lead to salination and loss of nutrients for down-water fish. It also raises concern of earthquakes due to instablity of incompetent dams which have to support thousands of tonnes of sediments behind them. One very famous, and problematic, dam is the Aswan High Dam in the Nile.

Flooding

Flooding is a natural part of a river's cycles. Human activity, however, has upset the natural way flooding occurs by walling off rivers and straightening their courses. Removal of bogs, swamps and other wetlands in order to produce farmland has reduced the absorption zones for excess water and made floods into sudden disasters rather than gradual increases in water flow. In ancient Egypt, life was made possible through the floods of the Nile and the accompanying silt and sediment which enriched the fields with fresh nutrients. Nowadays, since people have built on these floodplains, floods are disasters, causing untold property loss each year.

Human interference in the form of deforestation can also worsen conditions. The removal of vegetation leads to a reduction in Interception (vegetation stopping precipitation) and the 'weakening' of soil since plant roots no longer hold it together. As a result there is a reduced Infiltration capacity (how much water the soil can hold) and greater infiltration (precipitation going into the ground). This leads to faster soil saturation and therefore greater overland flow (also known as surface run off) and therefore, there are flash floods as the lag time decrease.

Logjams

Logjams are barriers within rivers, created by dead and uprooted trees. Over time, the obstruction prevents further logs to bypass, resulting in the creation of new network channels. According to author David R. Montgomery in his book, King of Fish, a logjam also causes water to buildup within a small space, forming peaceful pools within the main channel for young salmon to live within. The existence of these deep pools along with the complex web of channels creates an ideal salmon habitat. Today, many believe that the rebuilding of salmon runs is contingent upon reproducing the same environment shaped by logjams. As a result, many scientists have attempted to recreate artificial logjams. Marc Duboiski and Mike Ramsey of the Salmon Recovery Funding board staff, George Pess of the National Marine Fisheries Service, and Kevin Bauersfeld of Washington Department of Fish and Wildlife have prepared the Report to the Salmon Recovery Funding Board On the Engineered Log Jam (ELJ) Workshop ([1]), with the hope of mimicking natural logjams.

Small river in rural Indiana, United States. Rivers of this size are often referred to as a "creek."

Management

In its natural state a river may be inconvenient to man in a variety of ways. Rivers in inhabited areas have therefore been managed or controlled to make them more useful and less disruptive to human activity.

  • The river channel may be dredged to make it deeper for navigation or to prevent flooding.
  • Dams (see above) or weirs may be built to control the flow, store water, or extract energy.
  • Levees may be built to prevent flooding.
  • Sluice gates provide a means of controlling flow and adjusting river levels.
  • floodways may be added to draw off excess river water in times of flood.
  • Canals connect rivers to one another for water transfer or navigation.
  • River courses may be modified to improve navigation, or straightened to increase the flow rate.

River management is an ongoing activity as rivers tend to 'undo' the modifications made by man. Dredged channels silt up, sluice mechanisms deteriorate with age, levees and dams may suffer seepage or catastrophic failure.

River lists

The world's ten longest rivers

It is difficult to measure the length of a river, mainly because rivers have a fractal property, which means that the more precise the measure, the longer the river will seem. Also, it's hard to state exactly where a river begins or ends, as very often, upstream, rivers are formed by seasonal streams, swamps, or changing lakes.

This is an average measurement.

  1. Nile (6,690 km)
  2. Amazon (6,452km)
  3. Yangtze (Chang Jiang) (6,380 km)
  4. Mississippi-Missouri (6,270 km)
  5. Ob-Irtysh (5,570 km)
  6. Huang He (Yellow) (5,464 km)
  7. Amur (4,410 km)
  8. Congo (4,380 km or 4,670 km). (The source of this river is disputed.)
  9. Lena (4,260 km)
  10. Mackenzie (4,240 km)

For a longer list see Longest rivers. This also gives more information on measuring river lengths.

Well-known rivers (in alphabetic order)

  • Amazon - largest river in the world
  • American
  • Amu Darya
  • Amur - principal river of eastern Siberia and boarder river Russia/China
  • Arkansas - major tributary of Mississippi River
  • Arno - river through Florence
  • Arvandrud (Shatt al-Arab) the large border river between Iran and Iraq.
  • Brahmaputra - principal river in North East India & Tibet
  • Chao Phraya - principal river of Thailand
  • Colorado (Argentina)
  • Colorado (U.S.) - principal river of American West
  • Columbia - principal river of Pacific Northwest
  • Congo - principal river of central Africa
  • Danube - principal river of central and southeastern Europe
  • De La Plata - the widest river in the world. South America
  • Ebro - river in northwest Spain
  • Elbe - major German river, Hamburg is situated on it
  • Euphrates - twin principal river of Mesopotamia(Iraq)
  • Ganges - principal river of India
  • Han-gang - river of Seoul
  • Helmand River - Principle river of (Afghanistan)
  • Hari Rud (Afghanistan)
  • Huang He (Yellow) - principal river of China
  • Hudson - principal river of New York
  • Indus - principal river of Pakistan
  • Jordan - principal river of Israel
  • Karun - principal (navigable) river of southern Iran.
  • Kaveri - principal river of South India
  • Lena - principal river of northeastern Siberia
  • Mackenzie - longest river in Canada
  • Magdalena - principal river of Colombia
  • Main - river in Germany
  • Mekong - principal river of Southeast Asia
  • Mersey - river on which sits the English city of Liverpool
  • Meuse - principal river of the southern provinces of the Netherlands and eastern Belgium.
  • Mississippi - principal river of central United States
  • Missouri - principal river of the Great Plains
  • Murray - principal river of southeastern Australia
  • Niger - principal river of west Africa
  • Nile - Possibly the longest river in the world (or second after the Amazon)
  • Ob - large river of Siberia
  • Odra - major river in Eastern Europe
  • Ohio - largest river between Mississippi and Appalachians
  • Orinoco - principal river of Venezuela
  • Parana - major South American river
  • Paraguay - principal tributary of Parana river and major South American river in Brazil, Bolivia, Paraguay and Argentina
  • Po - principal river of Italy
  • Potomac River - principal river of the District of Columbia in the United States
  • Rhine - principal river of northwestern Europe
  • Rhône - principal river of southern France
  • Rio Grande - border between United States and Mexico
  • Saint Lawrence - drains Great Lakes
  • Seine - river of Paris
  • Segura- in southeast Spain
  • Severn- longest river in Great Britain
  • Shinano-gawa - longest river in Japan
  • Snake - largest tributary to the Columbia river in Washington
  • Tajo - largest river in the Iberian Peninsula
  • Tay - largest river in Scotland
  • Thames - river of London
  • Tiber - river of Rome
  • Tigris - twin principal river of Mesopotamia(Iraq)
  • Tonegawa - largest river in Japan
  • Vistula - principal river of Poland
  • Vltava - river of Prague
  • Volga - principal river of Russia
  • Yangtze (Chang Jiang) - longest river in China
  • Yenisei - large river of Siberia
  • Yukon - principal river of Alaska and Yukon Territory
  • Zambezi - principal river of southeastern Africa

Other lists

  • List of waterways
  • List of rivers by continent
    • List of rivers of Europe
      • Rivers of the United Kingdom
    • List of rivers of Asia
    • List of rivers of Africa
    • List of rivers of Antarctica
    • List of rivers of Australia
    • List of rivers of New Zealand
    • List of rivers of the Americas
    • List of rivers of Oceania
  • List of river name etymologies

Rivers in myth and fiction

Real rivers

  • The Thames in Edward Rutherfurd's London.
  • The Thames in Jerome K. Jerome's Three Men in a Boat.
  • The Thames and the Congo in Joseph Conrad's Heart of Darkness.
  • The Mississippi in Mark Twain's Huckleberry Finn.
  • The River Liffey through Dublin in James Joyce's Finnegans Wake.

Mythological rivers

  • In Greek mythology, the Acheron, Cocytus, Phlegethon, Lethe and Styx (the five rivers of Hades); and the Eridanus.
  • The Alph, an underground river imagined by various mystics and mentioned in Coleridge's poem Kubla Khan.
  • The Sambation river stops flowing every Saturday.

Fictional rivers

  • River Ankh traversing the city of Ankh-Morpork in Terry Pratchett's Discworld series.
  • Chocolate river in Willy Wonka and the Chocolate Factory.
  • River Djel in the country of Djelibeybi in Terry Pratchett's Discworld series.
  • The River in the Riverworld novels of Philip José Farmer.
  • Rivers of Middle-earth in various works of J. R. R. Tolkien.

This page about River includes information from a Wikipedia article.
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This also gives more information on measuring river lengths. Higher quality Schwinn bicycles, however, are still being sold at specialty bike shops. For a longer list see Longest rivers. Schwinn bicycles are now being sold in discount stores like Wal-Mart, Target, and Canadian Tire. This is an average measurement. In 2004 Pacific Cycle was, in turn, acquired by Dorel Industries. Also, it's hard to state exactly where a river begins or ends, as very often, upstream, rivers are formed by seasonal streams, swamps, or changing lakes. In 2001, Schwinn was purchased at a bankruptcy auction by Pacific Cycle, a company known for mass-market brands.

It is difficult to measure the length of a river, mainly because rivers have a fractal property, which means that the more precise the measure, the longer the river will seem. Zell shortly moved operations to Boulder, Colorado, where the Schwinn name continues to be stamped on a varied line of products. Dredged channels silt up, sluice mechanisms deteriorate with age, levees and dams may suffer seepage or catastrophic failure. The company and name were bought by the self-described corporate vulture firm Zell-Climark in 1993. River management is an ongoing activity as rivers tend to 'undo' the modifications made by man. A downhill spiral ensued, and after declining many offers from outside buyers, Schwinn went into bankruptcy in 1992. Rivers in inhabited areas have therefore been managed or controlled to make them more useful and less disruptive to human activity. This led to further inroads by both domestic and foreign competitors.

In its natural state a river may be inconvenient to man in a variety of ways. They also established company-operated shops, which were at first successful but alienated the independent retailers whose business they threatened. Marc Duboiski and Mike Ramsey of the Salmon Recovery Funding board staff, George Pess of the National Marine Fisheries Service, and Kevin Bauersfeld of Washington Department of Fish and Wildlife have prepared the Report to the Salmon Recovery Funding Board On the Engineered Log Jam (ELJ) Workshop ([1]), with the hope of mimicking natural logjams. Schwinn was forced to tighten its operations and closed the Mississippi plant. As a result, many scientists have attempted to recreate artificial logjams. Sophisticated cyclists now often selected vehicles by their components rather than the bike's actual brand, causing the Schwinn name to be devalued. Today, many believe that the rebuilding of salmon runs is contingent upon reproducing the same environment shaped by logjams. In addition the now struggling company had to cope with the flourishing of component manufacturers such as the Japanese firm Shimano.

The existence of these deep pools along with the complex web of channels creates an ideal salmon habitat. Upstart domestic manufacturers like Trek also cut into Schwinn's market. Montgomery in his book, King of Fish, a logjam also causes water to buildup within a small space, forming peaceful pools within the main channel for young salmon to live within. Not taking kindly to being double-dealt, Giant decided to aggressively push their own product to Schwinn's own retailers. According to author David R. Management knew it was perilous to depend so heavily on one supplier, and behind the scenes they negotiated a better deal with a Chinese upstart firm, China Bicycle Co. Over time, the obstruction prevents further logs to bypass, resulting in the creation of new network channels. Schwinn sales flirted again with the million mark, and the company turned a profit again in the late 1980s.

Logjams are barriers within rivers, created by dead and uprooted trees. Initially they dealt in China with Giant Bicycles, gradually increasing total imports to over half a million bicycles a year. This leads to faster soil saturation and therefore greater overland flow (also known as surface run off) and therefore, there are flash floods as the lag time decrease. Even more effectively, the company began to import bikes from China as well as Japan, where costs were going up. As a result there is a reduced Infiltration capacity (how much water the soil can hold) and greater infiltration (precipitation going into the ground). They also ramped up production of their Aerodyne exercise bicycle, which had been a consistent moneymaker even in bad times. The removal of vegetation leads to a reduction in Interception (vegetation stopping precipitation) and the 'weakening' of soil since plant roots no longer hold it together. They renegotiated loans by putting up the entire company and the Schwinn name as collateral.

Human interference in the form of deforestation can also worsen conditions. Schwinn staved off bankruptcy for a few years with some clever maneuvering. Nowadays, since people have built on these floodplains, floods are disasters, causing untold property loss each year. Profits turned quickly to large losses, and creditors, including those who had financed the ill-advised relocation, were impatient. In ancient Egypt, life was made possible through the floods of the Nile and the accompanying silt and sediment which enriched the fields with fresh nutrients. Labor there was cheap, but skilled metalworkers were difficult to find, and parts took a long time to get there from Asian suppliers. Removal of bogs, swamps and other wetlands in order to produce farmland has reduced the absorption zones for excess water and made floods into sudden disasters rather than gradual increases in water flow. This move, plus the decaying condition of the 80-year-old facility, led Schwinn to move operations to Greenville, Mississippi.

Human activity, however, has upset the natural way flooding occurs by walling off rivers and straightening their courses. Worker dissatisfaction, seldom a problem in the company's early years, grew; the Chicago plant voted to affiliate with the United Auto Workers in 1980. Flooding is a natural part of a river's cycles. He favored slick new managers with M.B.A.'s over ex-mechanics, alienating the management team he inherited. One very famous, and problematic, dam is the Aswan High Dam in the Nile. Jr., was in charge. It also raises concern of earthquakes due to instablity of incompetent dams which have to support thousands of tonnes of sediments behind them. By the early 1980s, a fourth generation Schwinn, Edward R.

Furthermore, trapping of river sediments behind the dams lead to salination and loss of nutrients for down-water fish. Schwinn and his conservative board balked at this step in 1978, and everything went downhill from there. Critics of dams especially 'Green' advocates, argue that dams remove upper-river biodiversity such as through deforestation and forced migration of rural villages and indigenous tribes. Frank V. Often, dams such as Hoover Dam along Colorado River become famous tourist attractions. Financing this heroic maneuver would have required bringing in outside investors, perhaps even foreign ones. Dams are useful in many ways, such as providing HEP, acting as regulator of river flow so as to regulate the occurrence of flooding, which is especially important to wet-rice agriculture, and also to improve navigation and transport on the river. In the midst of these income-depleting crises, management considered consolidating their outdated Chicago factories and relocating to a huge single facility to be built in Tulsa, Oklahoma.

Often the building of dams affects the whole of the river, even the part above the dam, as migrating fish are hindered (see fish ladder), waterflow is no longer bounded by seasonal changes and sediment flow is blocked. A more longlasting development, mountain biking would similarly pass Schwinn by in the 1980s. This disrupts the natural flow of the river, and creates a lake behind the dam. After first claiming this new sport was too dangerous to warrant involvement, management changed their tune—too late—when they introduced their Predator BMX line, which captured a mere 8% of the market. In places where the elevation changes of a river are great, dams for hydroelectric plants and other purposes are often built. While they had been quick to jump on the high-rider fad, Schwinn missed out on the next California craze to capture the children's bicycle market: BMX racing. (Source: NoorderSoft Waterways Database). In the mid-1970s, Schwinn took the radical step of allowing some of their dealers to sell imported brands, and even started to put their own label on a line of Japanese imports they marketed as their LeTour and Traveler models.

The French have canalized the river by means of a series of hydropower dams and double ship locks, thus ensuring a year round navigable depth of 3.50 meters. Furthermore, many older riders became disillusioned with the lack of comfort afforded by dropped handlebars and narrow seats, and these riders dropped out of the market altogether. Upstream from Karlsruhe the Rhine is the border between France and Germany. Worse, they were visually indistinguishable from the heavy mass-produced models, and were thus overlooked by riders looking for high-performance bikes. for the stretch around Bingen (between the mouths of the Mosel and the Main). While Schwinn offered a series of lightweight, fillet-brazed models from 1938 to 1978, they were hand-built, low-production machines. The further upstream, the more depth restrictions: at low water periods draught of ships is often limited to 1,90 m. Meanwhile, younger buyers were becoming more interested in lighter frames composed of new alloys which could be lug-fastened and brazed together.

The lower part of the river is navigable for the largest inland vessels (up to 135 meters long and 17 meters wide) with an available depth of more than 2,50 even at the lower water levels. Schwinn's outdated factories, and their corporate thinking as well, was wedded to heavy, steel, welded frames. Many millions of tons of goods are transported upstream yearly from these three sea ports to the industries near Nijmegen, Duisburg, Düsseldorf, Neuss, Köln, Koblenz, Mainz, Mannheim, Karlsruhe, Strasbourg, Colmar, Mulhouse and Basel. While everyone's profits soared, and Schwinn went on to record record sales of over 1.5 million bicycles in 1974, much of the growth was in lighter weight European and Asian imports. Inland vessels use the river to reach the major cities in Germany, Eastern France and Switzerland to transport bulk goods, liquids, containers AND passengers into the hinterland of the Port of Rotterdam and the ports of Amsterdam and Antwerp. bicycle sales doubling over the next two years. The Rhine is the busiest river in the world for transport ships. The mini-boom of the 1960s accelerated in 1970, with U.S.

Non-point source pollutants such as diffuse pollution from agriculture, urbanisation and forestry and now being recognised as one of the more damaging sources of pollutants in the developed world. Initially successful, this policy made it more difficult for the main office to keep in touch with the buying public, whose desires were about to change. Heated water dumped into rivers by power plants and factories also affects river life. The company decided to stop working through independent local distributors and constructed four huge regional warehouses from which their bicycles would—legally—be sent to individual shops. The most common point source of pollutant is probably sewage piped into rivers, but chemical pollution is also common, and industrial accidents (and/or negligence) account for significant destruction of riparian biomes. However, in a decision eventually decided by the US Supreme Court in 1967, Schwinn was ruled to have violated restraint of trade principles by preventing its distributors from shipping some of their bicycles to unapproved dealers. Human pollution of rivers is common, and very few rivers in the world today are clean of man-made substances. In a ten-year legal battle, many of Schwinn's allegedly restrictive practices were upheld by the courts: judges ruled that they certainly had the right to have their bicycles sold by retailers who knew the product and were equipped to service the bikes as well as sell them.

Living things in a river must be adapted to the current of the moving water. Schwinn's distributors, though, balked at restrictions the company put on their ability to send some of their Schwinns to shops not part of the Schwinn network. The flora and fauna of rivers are much different from those of the ocean because the water is fresh (non-salty). Department store brands were seen as poor imitators of the real thing. Starting at the mouth of the river and following it upstream as it branches again and again the resulting river network forms a dendritic (tree-like) structure that is an example of a natural random fractal. On the surface, Schwinn's marketing campaigns matched its engineering and design efforts, step for step. (Watershed is also used however to mean a boundary between catchment basins.). But despite Schwinn's unparalled success and yet another bicycle boom to come, there were clouds on the horizon.

The area drained by a river and its tributaries is called its watershed or catchment basin. While bicycling in the 1960s was not nearly as popular as before, Schwinn sales alone were topping that magic figure by the end of the decade. In arid areas rivers sometimes end by losing water to evaporation and percolation into dry, porous material such as sand, soil, or pervious rock. During the yet-unmatched bicycle boom of the turn of the century, annual national sales of bicycles had briefly topped one million. They end at their base level where they flow into a larger body of water, the sea, a lake, or as a tributary to another (usually larger) river. When teen and adult riders looked for models more sleek than the Black Phantom, which was the nation's most-wanted bicycle in the 1950s, Schwinn responded with the Varsity and Continental ten-speed racing bikes which topped sales as well. Rivers begin at their source in higher ground, either rising from a spring, forming from glacial meltwater, flowing from a body of water such as a lake, or simply from damp, boggy places where the soil is waterlogged. Calling their such model the Sting ray, Schwinn dominated the market in this genre as well.

Waterfalls are sometimes used as sources of energy, via watermills and hydroelectric plants. They were quick to pick up on the west coast phenomenon of fashioning motorcycle-like "high-rider" handlebars and long "banana seats" onto small frame bikes. Rapids are often used for recreational purposes (see Whitewater kayaking). Through the 1970s, Schwinn also kept up with changes in consumer demand. Where a river descends quickly over sloped topography, rapids with whitewater or even waterfalls occur. Service experts from headquarters made the rounds to be sure that shops knew how to properly fix the rare Schwinn which needed repairs. These types are:. Company newsletters lavished praise, and more lucrative bonuses, to the 1000 Club, whose members topped that number in annual bike sales.

There are 4 main types of rivers. Messy, grimy local bike shops were replaced by Schwinn dealers with glittering storefronts, uniformed salespeople, and long, tidy rows of only Schwinn products. Over time, rivers cut away at their beds, eventually forming a more gradual gradient. In the 1950s and 1960s, Schwinn cultivated a loyal cadre of bicycle retailers dedicated to selling most, or only, Schwinn bicycles. Rivers whose mouths are in saline tidal waters may form estuaries. Their distributors however long retained the right to send Schwinns to whichever hardware, toy, or bicycle shops wanted to carry them. Rivers that carry large amounts of sediment develop conspicuous deltas at their mouths. Schwinn did away with this practice in 1948 and insisted on the Schwinn brand and guarantee appearing on all their products.

Sometimes the river will cut off a loop, shortening the channel and forming an oxbow lake from the cut off section. Most companies sold bikes in bulk to department stores, who in turn sold them with the label of a store brand. Where a river flows over relatively flat areas, the river will meander: start to form loops and snake through the plain by eroding the river banks. For years, bicycle distribution had been haphazard. A river conducts water by constantly flowing perpendicular to the elevation curve of its bed, thereby converting the positional energy of the water into kinetic energy. Head engineer Frank Brilando made sure everything worked before being marketed. . Alongside general manager Bill Stoeffhaas, they added marketing whiz Ray Burch and design supervisor Al Fritz to the management team, and aimed also to be tops in marketing and distribution, and in service.

The scientific term for any flowing natural waterway is a stream; so in technical language, the term river is just a shorthand way to refer to a large stream. (for Valentine) Schwinn, who took over the company in the 50's. Smaller side streams that join a river are tributaries. nor grandson Frank V. Most rainfall on land passes through a river on its way to the ocean. Neither was it enough for son F.W. A river's water is normally confined to a channel, made up of a stream bed between banks. Being known as the best-made American bicycle would not alone have satisfied founder Ignaz Schwinn.

The mouth, or lower end of a river is known as its base level. The Schwinn brand became associated with quality a cut above the competition, and by the 1950s was established as the Cadillac of American bicycles. From their source, all rivers flow downhill, typically terminating in the ocean. Similar models followed, some high end and some more affordable, but all turned-out with top craftsmanship and with cutting-edge styling, suggestive of the flamboyant automobile styles of the era. The source of a river may be a lake, a spring, or a collection of small streams, known as headwaters. He added streamlined fenders, an ersatz fuel tank on the frame's top, a chrome-plated headlight, and a push-button bell, and the customers (mostly children) who could afford a $35 bicycle loved it. A river is a large natural waterway. to throw out the mold and make two-inch diameter balloon tires to yield a more comfortable ride.

Tolkien. had persuaded American Rubber Co. R. F.W. R. returned to Chicago and in 1933 introduced the Schwinn Aerocycle, the biggest change in bicycles since James Starley introduced the revolutionary "diamond frame" some fifty years earlier. Rivers of Middle-earth in various works of J. After travelling to Europe to get ideas, the hard-driving F.W.

The River in the Riverworld novels of Philip José Farmer. Instead of trying to cut corners, he insisted on turning out a product that would distance Schwinn from its competitors. River Djel in the country of Djelibeybi in Terry Pratchett's Discworld series. "F.W." Schwinn, now running the company, did his father proud and selected a bold course. Chocolate river in Willy Wonka and the Chocolate Factory. Ignaz' son Frank W. River Ankh traversing the city of Ankh-Morpork in Terry Pratchett's Discworld series. (as it remained in name until 1936) was on the verge of bankruptcy.

The Sambation river stops flowing every Saturday. Deprived of this income, Schwinn, Arnold Co. The Alph, an underground river imagined by various mystics and mentioned in Coleridge's poem Kubla Khan. At the close of the 1920s, the stock market crash and resulting economic downturn decimated the American motorcycle industry, taking Excelsior-Henderson with it. In Greek mythology, the Acheron, Cocytus, Phlegethon, Lethe and Styx (the five rivers of Hades); and the Eridanus. Both businesses thrived while their independent competitors failed. The River Liffey through Dublin in James Joyce's Finnegans Wake. Interested also in motorcycles, he purchased Excelsior Motorcycle Company in 1910, and added the Henderson Company four years later, to form Excelsior-Henderson, one of the country's foremost motorcycle builders.

The Mississippi in Mark Twain's Huckleberry Finn. He bought out failing firms on the cheap, and built a new factory on Chicago's west side. The Thames and the Congo in Joseph Conrad's Heart of Darkness. Schwinn saw opportunity where others saw only gloom. Jerome's Three Men in a Boat. Competition for parts and for the cooperation of the department stores which sold the bulk of the bicycles became intense. The Thames in Jerome K. By 1905 output nationwide was one-fourth of what it had been but five years earlier, and only 12 bicycle makers remained in Chicago.

The Thames in Edward Rutherfurd's London. This first bicycle boom was short-lived, as automobiles soon replaced bikes as the preferred means of transportation on American streets. List of river name etymologies. Ignaz was not only an ingenious designer and an exacting supervisor; he was an astute businessman as well, so Arnold was able to be the ultimate "passive partner". List of rivers of Oceania. Bicycle output in the United States grew to over a million per year at the turn of the century, and Arnold, Schwinn's were recognized as among the finest. List of rivers of the Americas. These were the peak years of a bicycle craze throughout the western world, and Chicago was the center of the industry in America, with 30 factories turning out thousands of bikes every day.

List of rivers of New Zealand. In 1895, with the financial backing of fellow German-American Adolph Arnold (a successful meat packer), he started the Arnold, Schwinn Bicycle Company. List of rivers of Australia. Frustrated with the unwillingness of local manufacturers for whom he worked to accept his design suggestions, Schwinn emigrated to the United States in 1891, where he found similar difficulties with American bicycle makers. List of rivers of Antarctica. Ignaz Schwinn was born in Germany in 1860, and he gravitated early to working on the two-wheeled ancestors of the modern bicycle which appeared late 19th century Europe. List of rivers of Africa. .

List of rivers of Asia. The story of its rise illustrates many principles of sound business operations, and its fall, which occurred in the face of the burgeoning of cycling in the United States in the 1970s and 1980s, demonstrates the opposite. Rivers of the United Kingdom. The Schwinn Bicycle Company was founded by Ignaz Schwinn in Chicago in 1895, and grew to become the dominant manufacturer of American bicycles through most of the 20th century. List of rivers of Europe

    . List of rivers by continent
      .

      List of waterways. Zambezi - principal river of southeastern Africa. Yukon - principal river of Alaska and Yukon Territory. Yenisei - large river of Siberia.

      Yangtze (Chang Jiang) - longest river in China. Volga - principal river of Russia. Vltava - river of Prague. Vistula - principal river of Poland.

      Tonegawa - largest river in Japan. Tigris - twin principal river of Mesopotamia(Iraq). Tiber - river of Rome. Thames - river of London.

      Tay - largest river in Scotland. Tajo - largest river in the Iberian Peninsula. Snake - largest tributary to the Columbia river in Washington. Shinano-gawa - longest river in Japan.

      Severn- longest river in Great Britain. Segura- in southeast Spain. Seine - river of Paris. Saint Lawrence - drains Great Lakes.

      Rio Grande - border between United States and Mexico. Rhône - principal river of southern France. Rhine - principal river of northwestern Europe. Potomac River - principal river of the District of Columbia in the United States.

      Po - principal river of Italy. Paraguay - principal tributary of Parana river and major South American river in Brazil, Bolivia, Paraguay and Argentina. Parana - major South American river. Orinoco - principal river of Venezuela.

      Ohio - largest river between Mississippi and Appalachians. Odra - major river in Eastern Europe. Ob - large river of Siberia. Nile - Possibly the longest river in the world (or second after the Amazon).

      Niger - principal river of west Africa. Murray - principal river of southeastern Australia. Missouri - principal river of the Great Plains. Mississippi - principal river of central United States.

      Meuse - principal river of the southern provinces of the Netherlands and eastern Belgium. Mersey - river on which sits the English city of Liverpool. Mekong - principal river of Southeast Asia. Main - river in Germany.

      Magdalena - principal river of Colombia. Mackenzie - longest river in Canada. Lena - principal river of northeastern Siberia. Kaveri - principal river of South India.

      Karun - principal (navigable) river of southern Iran. Jordan - principal river of Israel. Indus - principal river of Pakistan. Hudson - principal river of New York.

      Huang He (Yellow) - principal river of China. Hari Rud (Afghanistan). Helmand River - Principle river of (Afghanistan). Han-gang - river of Seoul.

      Ganges - principal river of India. Euphrates - twin principal river of Mesopotamia(Iraq). Elbe - major German river, Hamburg is situated on it. Ebro - river in northwest Spain.

      South America. De La Plata - the widest river in the world. Danube - principal river of central and southeastern Europe. Congo - principal river of central Africa.

      Columbia - principal river of Pacific Northwest. Colorado (U.S.) - principal river of American West. Colorado (Argentina). Chao Phraya - principal river of Thailand.

      Brahmaputra - principal river in North East India & Tibet. Arvandrud (Shatt al-Arab) the large border river between Iran and Iraq. Arno - river through Florence. Arkansas - major tributary of Mississippi River.

      Amur - principal river of eastern Siberia and boarder river Russia/China. Amu Darya. American. Amazon - largest river in the world.

      Mackenzie (4,240 km). Lena (4,260 km). (The source of this river is disputed.). Congo (4,380 km or 4,670 km).

      Amur (4,410 km). Huang He (Yellow) (5,464 km). Ob-Irtysh (5,570 km). Mississippi-Missouri (6,270 km).

      Yangtze (Chang Jiang) (6,380 km). Amazon (6,452km). Nile (6,690 km). River courses may be modified to improve navigation, or straightened to increase the flow rate.

      Canals connect rivers to one another for water transfer or navigation. floodways may be added to draw off excess river water in times of flood. Sluice gates provide a means of controlling flow and adjusting river levels. Levees may be built to prevent flooding.

      Dams (see above) or weirs may be built to control the flow, store water, or extract energy. The river channel may be dredged to make it deeper for navigation or to prevent flooding. Rejuvenated river - a river with a gradient that is raised by the earth's movement. Old rivers are characterized by flood plains.

      Old river - a river with a low gradient and low erosive energy. Its channels erode wider rather than deeper. A mature river is fed by many tributaries and has more discharge than a youthful river. Mature river - a river with a gradient that is less steep than those of youthful rivers and flows more slowly than youthful rivers.

      Its channels erode deeper rather than wider. Youthful river - a river with a steep gradient that has very few tributaries and flows quickly.