Sequent System
- What is it?:A drainage pattern is described as sequent if it correlates to the topography and geology of the area. The path of the river is highly dependent on the slope of the topography.
- Classified Into
- Consequent System
- The river which flows in the general direction of the slope is known as the consequent system.
- Examples: Godavari, Krishna, and Kaveri rivers.
- Subsequent System
- A tributary stream that forms after the main drainage pattern has been established is known as the subsequent system.
- Examples: Ken, Chambal, Sind, Betwa, and Yamuna.
- Consequent System
Insequent System
- What is it?: A system that does not correlate to the surface relief features and geology. It follows its initial path irrespective of changes in topography.
- Classified Into
- Antecedent Drainage
- A slope of a river gets uplifted and the river sticks to its original path, cutting through the uplifted portion and forming deep gorges.
- For example Himalayan rivers.
- Superimposed Drainage
- When rivers flowing over softer rocks after a period reach the harder rocks but continue to follow their initial path. This is called Superimposed Drainage
- For example Damodar river , Subarnarekha river.
- Antecedent Drainage