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In geomorphology, a drainage system is the pattern formed by the streams, rivers, and lakes in a particular watershed. 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.
A drainage system (agriculture) is an intervention to control waterlogging aiming at soil improvement for agricultural production
A drainage system (industrial and residential) is a facility to dispose of liquid waste. Image File history File links Question_book-3. ... Surface of the Earth Geomorphology is the study of landforms, including their origin and evolution, and the processes that shape them. ... For other uses, see River (disambiguation). ... For other uses, see Lake (disambiguation). ... A drainage basin is the area within the drainage basin divide (blue outline), and drains the surface runoff and river discharge (green lines) of a contiguous area. ... Waterlogging is a verbal noun meaning the saturation of such as ground or the filling of such as a boat with water. ...

Types of drainage system (geomorphology)

Drainage systems fall into one of several categories, depending on the topography and geology of the land:

Dendritic drainage pattern.

Parallel drainage pattern.

Trellis drainage pattern.

Dendritic drainage system

Dendritic drainage systems are the most common form of drainage system. The term dendritic comes from the Greek word "dendron", meaning tree, due to the resemblance of the system to a tree. In a dendritic system there is one main river (like the trunk of a tree), which is joined and formed by many smaller tributary rivers. They develop where the river channel follows the slope of the terrain. Dendritic systems form in V-shaped valleys; as a result, the rock types must be impervious and non-porous.^[1] Look up tributary in Wiktionary, the free dictionary. ... The term V-shaped is used in Geography to characterize the form of steep eroded valleys. ...

Parallel drainage system

A parallel drainage system is a pattern of rivers caused by steep slopes with some relief. Because of the steep slopes, the streams are swift and straight, with very few tributaries, and all flow in the same direction. This system forms on uniformly sloping surfaces, for example, rivers flowing southeast from the Aberdare Mountains in Kenya. For other uses, see Terrain (journal). ... A modern compass card. ... The Aberdare Range (formerly, the Sattima Range, Kikuyu: Nyandarua) is a 160 km long range of uplands in west central Kenya, north of the capital Nairobi, that forms a section of the eastern rim of the Great Rift Valley as it runs roughly north-south through East Africa. ...

Trellis drainage system

Trellis systems form in areas of alternating geology, particularly chalk and clay. The main river (the consequent) flows straight down hill. Subsequent streams develop perpendicular to the consequent along softer rock and erode it away, forming vales. The consequent river then cuts through the escarpments of harder rock. Obsequent streams flow down the dip slope of the escarpments to join the subsequent streams. General Definition A dip slope is a geological formation often created by tilted strata. ...

Rectangular drainage pattern.

Radial drainage pattern.

Deranged drainage pattern.

Rectangular drainage system

This develops on a strongly jointed rocky terrain. The rectangular drainage pattern is found in regions that have undergone faulting. Streams follow the path of least resistance and thus are concentrated in places where exposed rock is the weakest. Movement of the surface due to faulting off-sets the direction of the stream. As a result, the tributary streams make shape bends and enter the main stream at high angles.

Radial drainage system

Rivers radiate outwards from a central point, e.g. a volcanic cone or from a mountain range batholith Half Dome, a granite monolith in Yosemite National Park and part of the Sierra Nevada batholith. ...

Deranged drainage system

A deranged drainage system is a drainage system in watersheds where there is no coherent pattern to the rivers and lakes. It happens in areas where there has been much geological disruption. The classic example is the Canadian Shield. During the last ice age, the topsoil was scraped off, leaving mostly bare rock. The melting of the glaciers left land with many irregularities of elevation, and a great deal of water to collect in the low points, explaining the large number of lakes which are found in Canada. The watersheds are young and are still "sorting themselves out". Eventually the system will stabilize.^{[citation needed]} A drainage basin is the area within the drainage basin divide (blue outline), and drains the surface runoff and river discharge (green lines) of a contiguous area. ... Canadian Shield Canadian Shield Landform. ... Variations in CO2, temperature and dust from the Vostok ice core over the last 400 000 years For the animated movie, see Ice Age (movie). ...

Agricultural drainage system

In www.waterlog.info on the FAQs page, item 3, one can find a paper on types of agricultural land drainage systems used in different parts of the world.

See also

• Subsurface drainage systems
• Watertable control
• Well drainage system
• Drainage basin
• Sustainable urban drainage systems
• Sewage

Drainage is the natural or artificial removal of surface and sub-surface water from a given area. ... Controlling the water table in agricultural land by subsurface drainage with proper criteria to improve the crop production. ... Well drainage means drainage of agricultural lands by wells. ... A drainage basin is the area within the drainage basin divide (blue outline), and drains the surface runoff and river discharge (green lines) of a contiguous area. ... Sustainable Urban Drainage Systems (SUDS) are designed to reduce the potential of flooding on new and existing urban developments. ... Sewage is the mainly liquid waste containing some solids produced by humans which typically consists of washing water, faeces, urine, laundry waste and other material which goes down drains and toilets from households and industry. ...

Footnotes