river definition geography

Did you know? Levees increase the height of the river’s channel though, so the bankfull discharge is increased and it becomes more difficult for the river to flood. Estuary: The section of the river near the mouth that is tidal. A river system is a way of describing the larger networks of streams, lakes and rivers that are part of a larger river's network of tributaries and distributaries; for example, multiple rivers, including the Ohio, Red and Missouri rivers empty into the Mississippi River, serving as tributaries and are part of the Mississippi River's system. River mouth definition is - the place where the river enters the ocean. River transport their load by four processes. The width of a floodplain is determined by the sinuosity of the river and how much meander migration takes place. River definition: A river is a large amount of fresh water flowing continuously in a long line across the. Along the way, rivers may pass through wetlands where plants slow down the water and filter out pollutants. Geographers organize space in . River beaches can be a quite interesting option! A heavily braided section of the Tagliamento’s channel in Italy. The best-selling author of Balkan Ghosts presents a timely and provocative response to The World Is Flat that draws on the insights of leading geographers and geopolitical thinkers to present a holistic interpretation of the next cycle of ... As a river flows, it picks up sediment from the river bed, eroding banks, and debris on the water. The foreset bed makes up the majority of the delta and is dipped towards deep water in the direction that the river is flowing in. Licensed under the Creative Commons 2.0 license. The discharge from a drainage basin depends on precipitation, evapotranspiration and storage factors. Historically, the Nile has been used in irrigation, farming, and transportation for . There are a few distinct ways that a river erodes its bed and banks. A river can lose its energy when rainfall reduces, evaporation increases, friction close to river banks and shallow areas which leads to the speed of the river reducing and therefore the energy reduces, when a river has to slow down it reduces its speed (and ability to transport material) and when a river meets the sea. divide. The Rights Holder for media is the person or group credited. A river is a large natural stream of water that flows over land. River basins have typical features, these include: Tributary - a smaller river or stream flowing into a larger river. However, rivers still carry and distribute important salts and nutrients to support plant and animal life. Found inside – Page 974Genoa 703 Glom , or Glomen river i . 539 Geography , definition of i . Gloucester 87 divisions of i . ib . Glutton , animal i . 545 the order in which it is Goa ii . 386 treated i . 3 Goa in Celebez ii , 574 plan of the arrangement of ... Definition. The first stage is to measure the width and depth of the river. Usually rain water that has a roof into a gutter, or run - off sloping ground into a channel or pond. The story of urban streams and rivers is as much a social history as it is a technological one. The alternating riffles & pools have another affect, they increase the turbulence of the river and produce a special type of flow known as helicoidal flow. granite to limestone), the river erodes the less resistant rock faster producing a sudden drop in the gradient of the river with the resistant rock being higher up than the less resistant rock. A river source is the place from which a river begins to flow. Rivers carry freshwater to people, plants, and animals all across Earth. A sinuosity of 1 means that the channel is perfectly straight. They provide people with a method of transport and water power. The velocity of a river is the speed at which water flows along it. A . This is a corkscrew like movement which spirals from one side of the channel to another between pools. Tony Wheeler/Lonely Planet Images/Getty Images. | Meaning, pronunciation, translations and examples Found inside – Page 208What had been the roots of the distinctions and unities between the Yakurr and other groups in the field of history, linguistics, culture, geography, economics and politics? Our definition of Yakurr as a group was already based on ... With its main source of water disconnected, the lake eventually dries up leaving behind a meander scar. Whether you need to find the discharge or examine the profile of a feature such as a meander or riffle, it will be necessary to produce a cross-section of the river. As a result, the neck of a meander narrows. Licensed under the Creative Commons 3.0 license. The velocity will change along the course of any river, and is determined by factors such as the gradient ( how steeply the river is losing height), the volume of water, the shape of the river channel and the amount of friction created by the bed, rocks and plants. This settling of sediment is called deposition. A riffle is a a shallow section of a channel while a pool is a deep section. If no button appears, you cannot download or save the media. The bottomset bed stretches a fair distance from the mouth of the river as the fine sediments can be transported a reasonable distance from the river’s mouth. Floods can occur for a variety of reasons, and their effects can be minimized in several different ways. Earth Science, Climatology, Geology, Geography. This source is called a headwater. Song about rivers for Geography Key Stage 3, GCSE, and A levelRivers are flowing in constant motion down from the mountains into the ocean, the river gets fa. Copyright Diego Cruciat. Rivers can vary in size and there is no hard definition or rule on how big a flow of water must be to be categorized as a river . A river is a large, natural stream of flowing water. As the channel and valley deepens the sides of the valley are exposed and become susceptible to weathering. A flowing body of water that is smaller than a river is called a stream, creek, or brook. Although it is true that Geographers may be well trained in the location of many things and may be able to show you those things on a map, the true value of the geographic perspective is found in See more. watering land, usually for agriculture, by artificial means. stretch of land that extends into a river, lake, or ocean. Jeanna Sullivan, National Geographic Society, Sarah Appleton, National Geographic Society 04/11/2010. ↩. 2. Introduction. volcano A volcano is a mountainous vent in the Earth's crust. Ebro Delta, Spain) are vaguely shaped like a V with curved sides. A river is a large body of fresh, flowing water. Floods are events where water overflows onto land that is typically dry. A larger drainage basin will have a greater volume of water. river basin in Geography topic. The steepness of the valley sides and whether the valley actually looks like a V is dependent on the climate, vegetation and rock structure among things. A river is a ribbon-like body of water that flows downhill from the force of gravity. Bankfull Discharge: It is the maximum discharge made by a river without flooding. Deposition eventually separates the cutoff from the main channel leaving behind an oxbow lake. Erosion. downstream. Rivers can also form what is called an estuary, where salty seawater mixes with fresh water near the river mouth to form “brackish water.”  The Hudson River in New York, U.S., is an example of an estuary where brackish water extends more than 241 kilometers (150 miles) upstream. Found insideLet us look together the definition of a river in geography, for instance. It is a large natural stream of water emptying into an ocean, lake, or other body of water and usually fed along its course by converging tributaries. wide strait or waterway between two landmasses that lie close to each other, deeo oart of a river or other waterway. salty water, usually a mixture of seawater and freshwater. When discharge returns to normal levels, the river continues follow this new course. The Five Themes of Geography Geography is more than memorizing names and places. The largest & heaviest load is deposited first and closest to the river bank, often on the very edge, forming raised mounds. A confluence in a river. The Ganges (Ganga) River is a sacred body of water to Hindus that begins high in the Himalaya Mountains and empties out into the Bay of Bengal. In geography, a spur is a piece of land jutting into a river or stream or a ridge descending from mountains into a valley. Today, farmers in the flood plain of California’s Central Valley produce approximately one-third of the vegetables and two-thirds of the fruits and nuts consumed in the United States. The creation of eddie currents as a result of bedload in a river. This is the total volume of water flowing through a channel at any given point and is measured in cubic metres per second (cumecs). Potholes are cylindrical holes drilled into the bed of a river that vary in depth & diameter from a few centimetres to several metres. How Many Lakhs Does It Take to Make a Crore? If there’s a lot of meander migration, the area that the river floods on will change and the floodplain will become wider. Source - The beginning of a river , Spring - Water that comes out of the ground at the top of a mountain , Stream - A small river, River - A large natural flow of water , Floodplain - Area of flat land either side of the river likely to flood , Tributary - A stream or river that joins another river . Here's How the CARES Act Changed Charitable Contributions for 2020's Taxes, Civil Rights Leaders You Won't Read About in History Books. This slope is created by descending streams. Banks are the sides of a river or stream between which the water normally flows. As these depressions deepen, pebbles can become trapped in them. The trenches in which rivers flow for most of the year. Definition: What is a river? banks. This makes the clay particles sink due to their increased weight producing the bottomset bed. When the rock type of the river’s channel changes from a resistant rock to a less resistant one (e.g. Site design and development by Alex Jackson (). Braided channels develop in rivers with a lot of sedimentary load, a steep gradient and where the discharge of the river changes regularly. Rivers that overflow their banks also deposit sediment in the surrounding flood plain. Section 3 is the lower course (where it is at its widest and most powerful and enters the sea). An elongated lowland between ranges of mountains, hills, or other uplands, often having a river or stream running along the bottom. River basin definition, the area of land drained by a river and its branches. Each of these uses can affect the health of a river and its surrounding ecosystems. river beach. solid material transported and deposited by water, ice, and wind. Edexcel GCSE Geography A and B Unit 1This video describes how rivers transport, erode and deposit material. V-Shaped valleys are found in the upper course of the river and are a result of both erosion by the river and weathering. If a media asset is downloadable, a download button appears in the corner of the media viewer. River discharge is the volume of water flowing through a river channel. Found inside – Page 43Increasing attention to rivers as a means of transport and a factor in war created the distinction between the "affluent"✝ and the "confluent ... "Desert" acquired a definition based on its physical characteristics (lack of rainfall) ... A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. The character of a river's regime is influenced by a number of variable factors: the geology and soils particularly their permeability and porosity; groundwater noted in permeable rocks is gradually released into . River. The Nile Delta, Egypt) are shaped like a triangle (which is where the term delta comes from, the Greek letter delta Δ) and form when a river meets a sea with alternating current directions that shape the delta so that it looks like a triangle. Found inside – Page 65C Uses of rivers Activities S Key words Definition Precipitation downward movement of water into soil Interception loss of water from plants into the atmosphere Runoff rock with spaces and holes that allow water to pass through it ... In ancient Rome--a part of the Feline Empire--a ginger cat named Spartapuss is arrested and forced to fight as a gladiator. A river system is a way of describing the larger networks of streams, lakes and rivers that are part of a larger river's network of tributaries and distributaries; for example, multiple rivers, including the Ohio, Red and Missouri rivers empty into the Mississippi River, serving as tributaries and are part of the Mississippi River's system. The alluvium is very fertile so floodplains are often used as farmland. Stream erosion may be the most important geomporphic agent. They will best know the preferred format. Found inside – Page 1083Downs , 180 ; Esk river , Tas- Stewart Island , 628 , 629 Sundanese people , 557 mania , 613 ; Holland , 222 ; Stikine ... 159 , Stonehenge , 179 Sunk Plain , definition , 49 164 , 165 Stonehouse , 167 Sunni Mohammedans , 400 Southern ... The unsupported rock is known as the cap rock and it eventually collapses into the plunge pool causing the waterfall to retreat upstream. Found inside – Page 65CUses of rivers Activities is Key words Definition Precipitation downward movement of water into soil Interception loss of water from plants into the atmosphere Runoff rock with spaces and holes that allow water to pass through it ... These waterways are interconnected and the health of one of these rivers can have an impact on other waterways in the same river system. SALTATION: Large particles such as gravel and coarse sand are lifted and dropped along the river, so they bounce along the river bed in a series of bed. River sources are also called headwaters. RIVER Depends on: Discharge - amount of water Velocity - rate of water movement 4. Terms of Service |  When a volcano erupts, it spews out lava, ashes, and hot gases from deep inside the Earth. A confluence - where a river joins another river. At the bottom of the waterfall, a plunge pool is formed. This increases erosion on one side of the river and increases deposition on the other causing the river’s channel to appear to bend. Found inside – Page xviiiThe Definition of Rivers , Rivulets , and Springs , & c . 2. Torrents and Rivers Rivers sometimes produced by violent Rains , and melted Snow . 3. Most Rivulets rise from Springs , and Rivers from a Conflux of Rivulets . 4. A pothole that has formed along the River Clyde. Found inside – Page 169common method of boundary definition is by a combination of courses and distances and turning points. ... Many terms are used in referring to rivers as boundaries - median line, right bank, left bank, and the thalweg of the stream bed. The following sort of erosion is corrasion1. A river is a moving body of water that flows from its source on high ground, across land, and then into another body of water, which could be a lake, the sea, an ocean or even another river. River discharge is the volume of water flowing through a river channel. Runoff . community and interactions of living and nonliving things in an area. mouth of a river where the river's current meets the sea's tide. Rivers carry freshwater to people, plants, and animals all across Earth. Nile River. Over thousands of years, the repeated collapse of the cap rock and retreat of the waterfall produces a gorge of recession. Rivers are found on every continent and on nearly every kind of land. AT 4,132 mi (6,650 km) long, the Nile River is the longest river in the world. Cataract definition is - a clouding of the lens of the eye or of its surrounding transparent membrane that obstructs the passage of light. Geography and the Nile River. River basin definition: A river basin is the area of land from which all the water flows into a particular river. One may also ask, what is the definition of primary source in geography? river beach. The physical causes of flooding are: 1.Prolonged precipitation which saturates the soil until the water table (the level of saturated ground in the soil) reaches the ground surface.. 2.Intensive precipitation over a short period of time. As the river flows over the resistant rock, it falls onto the less resistant rock, eroding it and creating a greater height difference between the two rock types, producing the waterfall. The discharge from a drainage basin depends on precipitation, evapotranspiration and storage factors. Stem. A drainage or river basin is an area of land that is drained by a main river and its tributaries (small rivers joining the main river). Join our community of educators and receive the latest information on National Geographic's resources for you and your students. A braided channel is a type of channel that is divided into smaller sub-channels by small, temporary islands called eyots. CAMBRIDGE GEOGRAPHY AS - HYDROLOGY AND FLUVIAL GEOMORPHOLOGY: 1.3 RIVER CHANNEL PROCESSES AND LANDFORMS 1. Common crawl. This is also known as the 'River Long Profile' a natural and continuous flow of water in a long line across a country into the sea → stream the Mississippi River the River Thames on a river There were several boats on the river. Producing a cross-section of a river channel is a basic river fieldwork skill. Definition: What is deposition? Runoff . Cuspate deltas form when a river flows into a sea with waves that hit it head on, spreading the deposited sediment out. A river basin is an area of land drained by a river and its tributaries. The inside bend is shallower with a gentle slip-off slope made of sand or shingle that is brought across from the outside bend by the helicoidal flow of the river. V-Shaped valleys are deep river valleys with steep sides that look like a letter V when a cross section of them is taken, hence the name. What is Geography? River definition, a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. Giga-fren. What Is the Opposite of an Inverse Relationship? The finer material is deposited further away from the banks causing the mounds to appear to taper off. All rivers have a starting point where water begins its flow. A valley is a long depression, or ditch, in Earth's surface. Rivers start where rain falls onto hills and mountains and flows downhill to join the sea or a lake or loch. A smaller tributary flows into the main river. Erosion involves the wearing away of rock and soil found along the river bed and banks. Margot Willis, National Geographic Society, André Gabrielli, National Geographic Society. Alluvium: rock particles (clay, silt, sand and gravel) deposited by a river. Recent Examples on the Web During the wet season, the river runs fast and high, meaning the sun cannot hit the riverbed's plants. Found inside61 Hydrological Cycle and Rivers Definition ...... Rivers The Action of Rivers and Resultant Features River transportation River deposition .... River Profiles .... The youthful stage of a river River capture . Levees aren’t permanent structures. A river is a large natural stream of water that flows over land. Found insideSee Definition North America , at various points , from the gulf of St. tute the wealth of the Greenlander . 5. ... See Definition 27. Which is the longest river that enters the Arctic ocean ? that enters Hudson's bay ? World Regional Geography by Finlayson provides a concise and accessible introduction to the major concepts in Geography through an exploration of the world's regions. How Has COVID-19 Affected Gyms and Gym-Goers? A spur is a long, gently-sloping 'tongue' of ground that runs down from a hill to lower ground. A two-dimensional relief map displays the topography of a given area. The tributary that started the farthest distance from the river's end would be considered the source, or headwaters. A river can be wide and deep, or shallow enough for a person to wade across. It is over 4,100 miles long! A river is a ribbon-like body of water that flows downhill from the force of gravity. Found inside – Page xProcess of Gradation Works of Denudation , Weathering , Process of Denudation , Running Water ( River ) , Process of Erosion ... Glaciers Definition and Meaning , Kinds of the Glaciers , Denudational Works of Glaciers , Work of Erosion ... The edge of a drainage basin is known as the watershed. The authors of this collection seek to fill that gap in the ethnographic record by drawing attention to the deep historical attachments of island communities to rivers, and the ways in which those attachments are changing in response to ... Definition. They also shape the . This sort of erosion is most grounded at rapids and waterfalls where the water has a high speed. Human civilization and ecosystems alike are dependent on fluvial systems. Licensed under the Creative Commons 3.0 license. Found inside – Page 79Category Potential sediment sources Upland zone Slope debris Peat slides Bank erosion Forest ditches and roads Mining Transfer zone River cliffs Terraces Bank erosion Field drains and run - off Upstream tributaries Mining Lowland zone ... Found insidebankfull discharge The *discharge of a river which is just contained within the banks. This is the state of maximum velocity in the channel, and of maximum *competence (V. P. Singh, ed. 1987). Timár (2003) Quat. Sci. A heavily braided section of the Tagliamento’s channel in Italy. Clay is the main constituent because when clay meets salt water a process called flocculation takes place where clay & salt particles clump together (flocculate) due to an electrostatic charge developing between the particles. What Is the Definition of a River System. River capture is a natural process which is more active in the youthful stage of the valley develop­ment because the streams are actively engaged in head-ward erosion and valley lengthening but river cap­ture also occurs during mature and senile stages of the valley development through the process of lateral erosion and meander intersection. power generated by moving water converted to electricity. River cliffs form on the outside bend as the river erodes laterally. Have an idea for this article? You can complete the definition of river course given by the English Definition dictionary with other English dictionaries: Wikipedia, Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster. Rivers contain fresh water. A river is a naturally winding watercourse that drains surplus water from a drainage basin. The drainage pattern of an area is the result of the geological time period, nature, and structure of rocks, topography, slope, etc. If the valley is composed of hard rock the valley sides will be very steep because they won’t be weathered easily. Even though rivers hold only a tiny fraction of Earth's total water, they have always been essential to human civilization. River Discharge. Learn more about floods with these resources. Match all exact any words . In Egypt, for example, the Nile River and its adjacent delta helped give rise to the Egyptian empire that built the pyramids. 1. A sinuosity greater than 1 means that the river meanders. A river can be wide and deep, or shallow enough for a person to wade across. Phone number: 541-386-4500 ext 4544. The continued repetition forms a waterfall. You just studied 4 terms! The inside bend is shallower with a gentle slip-off slope made of sand or shingle that is brought across from the outside bend by the helicoidal flow of the river. As a result of the eddie currents, the pebbles drill into the depressions making them more circular, wider & deeper. The valley’s sides also undergo mass movements resulting in large volumes of material falling into the river’s channel, adding to its erosive power and causing the valley sides to take up a V shape. This is the total volume of water flowing through a channel at any given point and is measured in cubic metres per second (cumecs). Riverbed definition is - the channel occupied by a river. valley A valley is a low place between mountains. These currents erode the river’s bed and create small depressions in it. Spurs often provide access to and from the high ground, for walkers, for roads, etc. Text on this page is printable and can be used according to our Terms of Service. Found inside – Page 318Continent or principal land masses , areas Geology and Physical Geography , conof , 38 . nection between , 33 . Continental river - systems , 189 . ... Hemispheres , continental and oceanie , Day , cause and definition of , 11 . 37 . Erosion also involves the breaking down of the rock particles being carried downstream by the river. A pothole that has formed along the River Clyde. When a river meets a stationary body of water, its velocity falls causing any material being transported by the river to be deposited. These deltas and floodplains are highly fertile agricultural zones that offer tremendous value to the surrounding people. Usually rain water that has a roof into a gutter, or run - off sloping ground into a channel or pond. waterfall The bed (also called the river bed) is the bottom of the river (or other body of water). You can spot a spur on the map quite easily - it looks like a long, narrow tongue of contour lines, dropping away from a mountain top or a ridge. Alluvial means deposited by running water. When the river’s discharge is high, it is able to transport its large bedload by traction eroding the river’s bed and valley by corrasion, deepening it. raised edges of land on the side of a river. Found inside – Page 864... of geography river 329 Honda bay 656 Iron manufactures of the U. States 217 Horses , Narragansett breed 844 river ... rivers 131 Islands definition of 97 Hudson city Na 874 warmer than continents 73 river 296 Isthmuses definition of ...
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