Question.
State the differences between Radial and Centripetal drainage patterns.
(Chapter-3 Drainage System, Class 11 NCERT geography "India Physical Environment")
Answer.
The flow of water passes through fixed channels is known as "drainage" and the network of drainage is known as a drainage system.
The drainage system forms some specific pattern in the geographical areas which is known as the drainage pattern.
There are different types of drainage patterns that are determined by the geological time period, the nature and composition of the rocks, the topography, the slope, and the amount of water flow in the areas.
Following are the important drainage patterns;
- Dendritic drainage pattern.
- Trellis drainage pattern.
- Radial drainage pattern.
- Centripetal drainage pattern
Following are the differences between centrifugal (radial) and centripetal drainage patterns;
When multiple rivers originate around a single highland and flow in all directions, the pattern formed by this type of drainage pattern is known as a radial pattern, while many When rivers meet in a lake or depression area from all sides, then such drainage pattern is called the centripetal pattern.
An example of a radial drainage pattern is the rivers originating from the Amarkantak hills of Madhya Pradesh. Amarkantak is an elevated land where rivers like Narmada, Son, Mahanadi, etc. originate from all directions. Whereas Loktak Lake of Manipur is an example of a centripetal drainage pattern. Loktak Lake is a depression area where the river comes from all directions and fills Loktak Lake.
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