Name: Drainage Patterns
Uploaded: 2019-07-19
Duration: 6 min 3 s
Description: Unveiling nature's artwork: Discover the mesmerizing secrets hidden within the intricate tapestry of drainage patterns.

Question

There is a plan to make the river Ganga flow through artificial channels blocking its natural course before it enters the plains. Give arguments for and against such a proposal.

Accepted Answer

Arguments for such proposal:

If meanders are removed then the velocity of the water through a settlement will increase. This will stop a backlog of water and will reduce the risk of flooding.

Artificial channels also improve navigation.

They are also used to transport water for irrigation and other human uses.

They take the pressure off the main channels when floods are likely hence reducing flood risk.

They can be used as artificial stores that can store excess water.

Arguments against such proposal:

The process can be expensive and time-consuming.

It can cause problems to areas downstream that are receiving more flood water quickly.

By changing the course of the river, one might remove flowing water from industries that depend on it. There might also be buildings that have to be demolished.

Under extreme conditions, embankments may fail to cause even bigger problems.

It is not always possible to change land uses that already exist in an area.

There is a plan to make the river Ganga flow through artificial channels blocking its natural course before it enters the plains. Give arguments for and against such a proposal.

Important Questions on Drainage : Major Rivers

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