Drainage basins are the principal hydrologic unit considered in fluvial geomorphology. The watershed consists of surface waterlakes, streams, reservoirs, and wetlandsand all the underlying groundwater. Drainage basin is a land area where excess water from the rain, snow or melted ice exits to a single point like the river, lake, sea, ocean and other water bodies. Grdc major river basins of the world mrb is an ongoing gis project of the. A fascinating relationship was proven between the total length of streams and the total basin areas, which was supported by the contributing regions 17. Drainage basin article about drainage basin by the free. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Drainage basin, also called catchment area, or in north america watershed, area from which all precipitation flows to a single stream or set of streams. Ridges and hills that separate two watersheds are called the. Ridges and hills that separate two watersheds are called the drainage divide. Basin watersheds lake pontchartrain basin foundation. The complete river system of india along with origin, length of the river, their flow basin areas and discharge is given below. The drainage basin system these icons indicate that teachers notes or useful web addresses are available in the notes page. The wash basin, also called sink or sink, is also an old water source, and is a water source and a drainage basin.
Comparable community groups based in ontario, canada, are called conservation authorities. It conserves water, promotes the continued flow of the river. Large drainage basins, like the area that drains into the mississippi river contain thousands of smaller drainage basins. There is a printable worksheet available for download here so you can take the quiz with pen and paper.
To learn more about drainage basins, you can watch the video lesson called drainage basins. The basin of the tocantins is framed with the aid of another enormous waterway, the araguaia, and has a ordinary launch of 388,461 cubic toes eleven,000 cubic meters every 2d. The list of drainage basins by area identifies basins also known as catchments or, in. The oceans drain approximately 83% of the land in the world. Drainage basin definition of drainage basin by the free. The major types of basins are river drainage basins, structural basins, and ocean. The catchment area of a school, hospital, or other service is the area that it serves. A drainage basin can be described as an open system that permanently. Jan, 2012 the drainage basin as a system lesson 2 1.
Data can be downloaded as esri layer package lpk files for use within. A drainage basin is any area of land where precipitation collects and drains off into a common. Cawston creek is a typical small drainage basin approximately 25 km 2 within a very steep glaciated valley. Check the complete notes of drainage system in india below. A drainage basin an area of land drained by a river and its tributaries where any precipitation is collected or drained into it. Water supply is commonly provided by one or more taps of hot and or cold water, and discharge is normally connected to a sewerage system.
It helps in the accumulation of groundwater, enables healthy soil and also provides habitat for wildlife and plants. The basin area is very essential parameter like the stream length in drainage basin. The catchments of large rivers are called river basins while those of small rivulets and rills are often referred to as watersheds. Lake pontchartrain basin foundation lpbf was established in response to environmental concerns voiced throughout the basin. The primary stream fed by tributaries within a drainage basin. The line that separates two adjacent drainage basins is called a drainage divide. An area drained by a river and its tributaries is called a drainage basin. Jan 23, 2017 a drainage basin sometimes called a catchment basin is basically a heavy duty box that comes in various sizes with a slotted lid. The drainage pattern of an area is the outcome of the geological time period, nature and structure of rocks, topography, slope, amount of water flowing and the periodicity of the flow.
It act as a funnel by collecting the water and channels through one area covered by the basin. The primary stream fed by tributaries within a drainage basin is termed a. The boundary line separating one drainage basin from the other is called as the watershed area. All water leaves a drainage basin through one riverwater falling on opposite sides of a divide will flow in different directionsa trunk stream for one drainage basin can be a tributary for a larger. It can flow directly into the river or go through tributaries smaller rivers that flow into the bigger river first.
All rivers receive a water supply and the area of land this comes from is known as a drainage basin. Drainage system 23 separating one drainage basin from the other is known as the watershed. Drainage basins are defined by topographical features, called drai. Its boundary is marked by a ridge of high land called watershed drainage basins have one main stream and many tributaries. It includes oceanic sea drainage basins which have hydrologically coherent areas oceanic seas are set by iho convention. They are also known as catchments, catchment basins, watersheds, or water basins. A watershed, also called a drainage basin or catchment, is an area drained by a river and its tributaries. This website and its content is subject to our terms and conditions. This icon indicates that the slide contains activities created in flash. Drainage basin definition and meaning collins english.
The land area which collects water is also called a drainage basin or catchment area. Download scientific diagram regions, primary and secondary drainage basins. The drainage basin includes all the surface water from rain runoff, snowmelt, and nearby streams that run downslope towards the shared outlet, as well as the groundwater underneath the earths surface. Towards the finish of its path, the tocantins streams into the amazon river close belem. Tes global ltd is registered in england company no 02017289 with its registered office at 26 red lion square london wc1r 4hq. The flow of water through welldefined channels is known as drainage and the network of such channels is called a drainage system. A drainage basin is an area of land that contributes the water it receives as precipitation to a river or network of rivers. The statewide mapping of natural drainage basins established a hierarchical system of basins based on drainage area size with large major basins subdivided.
The washbasin is often an integral part of sanitation, bathroom facilities, kitchens and services in general. There is, however, a slight difference between a river basin and a watershed. Drainage basin definition of drainage basin by medical. The geographical area that is drained by a river and that contributes water to a river system is called its. Check the link to download drainage system in india pdf drainage system in india pdf. Canadas major drainage regions are the atlantic ocean, hudson bay, arctic ocean, pacific. A drainage basin is a naturally occurring extent of land which serves as a funnel to channel precipitation and excess water to a nearby river or stream.
Differing in size and shape, watersheds can encompass a small stream or span thousands of miles like the mississippi river watershed. Search help in finding drainage basin online quiz version. Types of drainage system in india pdf download government exams. May 07, 2015 a drainage basin is an area of land that contributes the water it receives as precipitation to a river or network of rivers. A standardized mapping of natural drainage basins in connecticut was completed in 1981 by the connecticut department of environmental protection dep. As the publics independent voice, lpbf is dedicated to restoring and preserving the water quality, coast, and habitats of the entire pontchartrain basin. Chapter i the drainage basin as a system unit sciencedirect.
Tectonic activity is the movement of large pieces of the earths crust, called. The mississippi river drainage basin is the fourth largest in the world. The boundary of a watershed is called a drainage divide. The limits of a given catchment area are the heights of landoften called drainage divides, or watershedsseparating it from neighboring drainage systems. Ocean basins form the largest drainage in the world. Commonly used to catch storm water runoff to be piped underground to some more desirable location note. Storm over mountain drainage basin, puts lots of water on ground, surface impermeable, water runs to ephemeral stream channel, quickly fills with water, develops into flash flood and debris flow down to basin floor. Under normal conditions, precipitation is the major source of matter and solar radiation the major source of energy. Feb 20, 2012 river basin, upper, middle lower course, river profile, stages of a river. A drainage pattern that looks like tree branches with lots of twigs is known as a dendritic drainage pattern. It extends from the allegheny mountains in the east to the rocky mountains in the west and covers over 1. The sandurs used as examples in this study, named elveflya and nottingham, are. For example, the total area drained by the mississippi river constitutes its drainage basin, whereas that part of the mississippi river drained by the ohio river is the ohios drainage basin.
A high land area that separates one drainage basin from the other is called the water devide. Catchment area definition and meaning collins english. The drainage basin as a system lesson 2 slideshare. Trellis drainage pattern is formed when the primary tributaries of main rivers flow parallel to each other and secondary tributaries join them at right angles. Explain the main hydrological characteristics and processes which operate within rivers and drainage basins. The other 17% an area larger than the basin of the arctic ocean drains to internal endorheic basins. This drainage basin system divided connecticut into 8 major basins, 45 regional basins, 337 subregional basins, 2,898 local basins, and 7,067 small drainage basin areas. A drainage basin is naturally occurring drainage of land that channels precipitation and excess water to a river or stream. The other name of drainage basins are even called water sheds. All water leaves a drainage basin through one riverwater falling on opposite sides of a divide will flow in different directions a trunk stream for one drainage basin can be a tributary for a larger drainage basin. Download the pdf question papers free for off line practice and view the solutions online.
Powerpoint with addidtional sheet to match up the different sections of a river. Synonyms for drainage basin include catchment area, catchment basin, drainage area, watershed and catchment. Drainage divides are often steep mountain ranges or hills. A drainage basin is any area of land where precipitation collects and drains off into a common outlet, such as into a river, bay, or other body of water. All water that falls on the watershed flows into one river. The word watershed is sometimes used interchangeably with drainage basin or catchment.
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