Radial drainage patterns develop surrounding areas of high topography where elevation drops from a central high area to surrounding low areas. Radial drainage patterns develop where streams radiate outward from an isolated high area. Drainage channels develop where surface runoff is enhanced and earth mater. Automatic drainage pattern recognition in river networks.
Geologists have identified different types of drainage patterns. The methodology to classify these patterns consisted of drainage pattern models, hierarchical and relational models, attribute extraction, and classification strategies. Level i categorize stream types into letters a g based on their geomorphic characteristics that result from the integration of basin relief, land form, and valley morphology. If you could look down on a river from above, you would. All of the precipitation rain or snow that falls within a drainage basin eventually flows into its stream, unless some of that water is able to cross into an adjacent drainage basin via. Phsc 210 week 5 mastering geology assignments assignment. They are governed by the topography of the land, whether a particular region is dominated by hard or soft rocks, and the gradient of the land. Drag the appropriate labels to their respective targets. Drainage system an excessively wet land area with a network of channels, drains, and hydraulic engineering and other structures that. A deranged drainage system is a drainage system in drainage basins where there is no set pattern to the rivers and lakes. Check the complete notes of drainage system in india below.
Pdf principles of drainage basin analysis from multisource data. Combinations of these geologic controls lead to the formation of identifiable patterns. Drainage pattern is the pattern formed by the streams, rivers, and lakes in a particular drainage basin. Part a classifying stream drainage patterns in the. Other articles where drainage pattern is discussed. The significance of drainage patterns in determining regional geologic history has been known for over a century. Patterns of water all water will eventually drain to another water source. What is drainage pattern and different types of drainage. A drainage pattern is layout that a river and its tributaries, or set of rivers, make on the earths surface. Classifying numbers mystery patterns teacher worksheets. A dendritic drainage pattern is the most common form and looks like the branching pattern of tree roots. Trellis drainage the game ends when you get all 4 questions correct, or when you give up. Drainage patterns or nets are classified on the basis of their form and texture. Part a classifying stream drainage patterns in the diagram below, there are examples of five different landscapes.
Drainage patterns depend on the topography and geology of the land accordant drainage patterns. Drainage patterns free zimsec revision notes and past exam. Drainage patterns article about drainage patterns by the. The number, size, and shape of the drainage basins found in an area vary and the larger the topographic map, the more information on the drainage basin is available. The results indicated that a digital computer can assist human interpretation of. Lab7lecture206qu17 2 lab 7 concepts basic concepts and. Dendritic drainage patterns resemble a branching tree. Road density is known to play a dominant role in humaninduced augmentation of sediment supply by erosion and mass wasting in upland forested land. Stream drainage patterns the pattern that the streams in a river system form on earth s surface is influenced by the bedrock beneath.
A drainage basin is the topographic region from which a stream. Based on the shape and formation of river patters, there are different drainage patterns. Dendritic patterns are the most common type of stream drainage, and typically form where streams flow over materials that are uniform in their resistance to erosion. Streams seek the lowest path as they move downhill, and they tend to erode their beds in places where the ground is weak. Drainage patterns generally are subdivided into basic and modified basic. Classifying stream drainage patterns in the diagram below, there are examples of five different landscapes. This is a widelyused method for classifying streams and rivers based on common patterns of channel morphology. Lab7lecture206qu17 2 lab 7 concepts basic concepts and definitions watershedsdrainage basins drainage divides drainage patterns classifying. Numerous analyses of the spatial arrangements of streams in drainage basins have shown that stream networks conform to a small number of stream patterns. Stream ordering a method of classifying, or ordering, the hierarchy of natural channels within a watershed was developed by horton 1945. Stream drainage patterns start by reading the first page of these notes. Drainage patterns are determined by regional geology and reflect control by structures, regional slope, and bedrock erosional characteristics.
Concepts basic concepts and definitions types of work performed by streams alluvium base level watershedsdrainage basins drainage divides drainage patterns classifying stream order categories of rivers straight channel, braided stream, meandering stream stream information calculating discharge flood recurrence realworld example. Check the link to download drainage system in india pdf drainage system in india pdf. In geomorphology, drainage systems, also known as river systems, are the patterns formed by. A basic pattern is one whose gross characteristics readily distinguish it from.
The drainage patterns are divided into the following ten types. Basic drainage patterns use an arrow to show direction of surface water. A drainage basin is the topographic area from which a stream collects runoff, throughflow, and groundwater flow. Drainage density and drainage patterns each organized system of stream tributaries exhibits spatial characteristics that provide important information about the nature of the drainage basin. This presents several classes of drainage system described in the physical environment. On most of the area a dendritic to trellis drainage pattern has developed figure 1. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Drainage patterns are constrained by the underlying terrain morphology and describe the organization of tributaries along a.
Drainage patterns are controlled by following factors. Drainage patterns reflect topography and the surface rock and faulting patterns present in a landscape. Pdf a numerical aproach to the analysis and classification. Some of the common river drainage pattern include dendritic river pattern, trellised river pattern, radial river pattern and centripetal river pattern. The results of several indices need to be combined with the other geological information to classify the areas as being very active. Their shape or pattern develops in response to the local topography and subsurface geology. The drainage pattern evolves over a long period of time and is affected by such factors as the underlying rock, the slope of the land, the existence or nonexistence of faultlines and tectonic movements. Drainage pattern shailesh chaure 31032015 1 drainage pattern drainage pattern refers to the particular plan or design which the individual stream courses collectively form. Geography notes pdf for upsc ias civil services exam environment notes for upsc ias gs1, gs3 books for upsc ias civil services examination books for geography optional upsc ias cse geography pdf sample files. The citys mscp and biology guidelines are based on vegetation. A drainage system is described as accordant if its pattern correlates to the structure and relief of the landscape over which it flows. Therefore, both topography and geologic structure influence. Annular drainage is a pattern of concentric circles that are connected by short radial stream segments. Sep 08, 2016 drainage patterns or nets are classified on the basis of their form and texture.
The indian drainage is divided into two major drainage systems on the basis of orientation to the sea. The flow of water through welldefined channels is known as drainage and the network of such channels is called a drainage system. The delineated networks were assigned to one of three morphologic classesdendritic, parallel or rectangularusing a quantitative terrestrial drainage pattern classification algorithm modified. Geography detailed contents list geography pdf sample file 3 mb geography print friendly pdf sample file 3 mb geography related current affairs may 2019 500 kb geography related. Phsc 210 week 5 mastering geology assignments 8mastering geology assignments 8item 1part awhich of the following is the primary step that allows water to ent.
Geography detailed contents list geography pdf sample file 3 mb geography print friendly pdf sample file 3 mb geography related current affairs may 2019 500 kb geography. The area from which the water flows to form a stream is known as its drainage basin. According to the configuration of the channels, drainage systems can fall into one of several categories known as drainage patterns. The drainage pattern of an area is the result of the geological time period, nature, and structure of rocks, topography, slope, etc. Over time, a stream system achieves a particular drainage pattern to its network of stream channels and tributaries as determined by local.
The dendritic drainage pattern was a treelike trace of the streams on a map that resulted from uniform surface control of the development of stream channels. In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular drainage basin. A numerical aproach to the analysis and classification of channel network patterns. Drainage patterns free zimsec revision notes and past. There are several bases for classifying drainage systems of india. Owing to local topography and subsurface geology, a drainage system achieves a. If you could look down on a river from above, you would see. For each landscape, determine whether you have enough information to tell what type of stream drainage pattern would develop on it. Lab7lecture206qu17 2 lab 7 concepts basic concepts. Ijgi free fulltext evaluation of river network generalization. Pdf a study of variables characterizing drainage patterns in river. Classifications which attempt to combine descriptive and genetic aspects of types of. Changing drainage patterns within south cascade glacier, 19641992 381 fig.
Drainage patterns are classified on the basis of their form and texture. Drainage patterns synonyms, drainage patterns pronunciation, drainage patterns translation, english dictionary definition of drainage patterns. Stream drainage patterns start by reading the first. Some of the worksheets displayed are number patterns 10 18 26 34 42, sets of numbers in the real number system, name score classification, classifying real numbers work, sets of real numbers date period, sorting classifying and patterning critical to, 81 fresh fun critical. The specific objectives of this stream classification system are as follows. Drainage pattern refers to the particular plan or design which the individual stream courses collectively form. Aug 26, 2012 drainage patterns reflect topography and the surface rock and faulting patterns present in a landscape. Showing top 8 worksheets in the category classifying numbers mystery patterns. Drainage patterns over time, a stream system achieves a particular drainage pattern to its network of stream channels and tributaries as determined by local geologic factors. A watershed represents all of the stream tributaries that flow to some location along the stream channel. Jan 05, 2015 drainage pattern part 37 by ss ojha sir geography lecture for ias pcs netjrf duration.
The number, size, and shape of the drainage basins found in an area varies and the larger the topographic map, the more information on the drainage basin is available. What is drainage pattern and different types of drainage pattern. Pdf automatic drainage pattern recognition in river networks. Drainage pattern part 37 by ss ojha sir geography lecture for ias pcs netjrf duration. Eight patterns types were quantitatively described and classified. Hierarchy of the rosgen stream classification level i. In geomorphology, drainage systems, also known as river systems, are the patterns formed by the streams, rivers, and lakes in a particular drainage basin. In the early history of a network, and also when erosion is reactivated by earth movement or a fall in sea level, downcutting by trunk streams and extension of. The main types of drainage systems are briefly described below. If so, associate the landscape with the correct name of its drainage pattern. Three 3 factors that influence the development of drainage pattern are. The position of the streams did not significantly change between 1987 and 1992. Drainage network type and substrate composition in mobile river channels. For the most common drainage patterns in our titan data, we explored and.
Rao 1977 divided the indian rivers into following three categories depending upon the size of their catchment area. In another as basic drainage patterns or even as modified classification, gagnon 1974 stress is placed on. It happens in areas where there has been much geological disruption, such as earthquakes and mountains forming. Read on to learn some common types of drainage patterns, such as. Nov 24, 2015 drainage patterns are formed by the streams, rivers, and lakes in a particular drainage basin. Drainage patterns definition of drainage patterns by the. Drainage patterns are primarily controlled by the overall topography and underlying geologic structure of the watershed. Radial drainage patterns develop surrounding areas of high. Dendritic drainage pattern parallel drainage pattern.
The most common stream pattern is a dendritic drainage. Distinctive patterns are acquired by stream networks in consequence of adjustment to geologic structure. Rectangular drainage patterns develop where linear zones of weakness, such as joints or faults cause the streams to cut down along the weak areas in the rock. Stream drainage patterns start by reading the first page of. A drainage basin is the topographic region from which a stream receives runoff, through flow, and groundwater flow. 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. Drainage patterns we have defined drainage pattern and discussed both the dendritic drainage pattern and the trellis drainage pattern. The pattern of tributaries within a drainage basin depends largely upon the type of underlying rock, and on structures within that rock such as folds, fractures, and. The shape of the pattern depends on rocks, soil, climate and the changes made to the river. Quantitative description and classification of drainage. A drainage pattern is described as discordant if it does not correlate to the topology surface relief features and geology geological features based on both endogenetic movements and exogenetic movements of the area.
The main rivers follow units of readily eroded shales and clays, while the relatively short tributaries flow. Drainage system in geomorphology the study of the earths processes, a drainage system is the. A dendritic drainage pattern is the most common pattern. About 77 per cent of the drainage area of the country is oriented towards the bay of bengal. The rosgen stream classification is a system for natural rivers in which morphological arrangements of stream characteristics are organized into relatively homogeneous stream types. Drainage patterns are generally classified according. In another as basic drainage patterns or even as modified classification. Jan 19, 2016 based on the shape and formation of river patters, there are different drainage patterns. Geomorphologists and hydrologists often view streams as being part of drainage basins. Dec 10, 2016 a drainage basin is the topographic region from which a stream receives runoff, through flow, and groundwater flow. Drainage patterns are formed by the streams, rivers, and lakes in a particular drainage basin.
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