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Different Types of Drainage Systems


There are six different types of Drainage Systems:



Drainage systems depend on the topography and geology of the land:

1. Dendritic Drainage System
Dendritic drainage systems are the most common form of drainage system. The drainage system resembles a tree. They develop where the river follows the slope of the terrain.


2. Parallel Drainage System
A parallel drainage system is a pattern of rivers caused by steep slopes.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.


3. Trellis Drainage System
Trellis systems form in areas of alternating geology, particularly chalk and clay. The main river flows straight down hill. Subsequent streams develop perpendicular to the main river forming vales.


4. Radial Drainage System

Radial Drainage Pattern around Mt Taranaki, New Zealand

In the Radial drainage system rivers radiate outwards from a central point, e.g. a volcanic cone or from a mountain range.

5. Rectangular Drainage System
This system develops on a strongly jointed rocky terrain. Streams follow the path of least resistance and thus are concentrated in places were exposed rock is the weakest.

6. 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.


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