5 Questions
Define drainage basin.
The area drained by a single river system.
Name the two major groups into which Indian rivers are divided.
Himalayan rivers and Peninsular rivers.
What is a water divide?
An elevated area that separates two drainage basins.
What is the main difference between Himalayan rivers and Peninsular rivers?
Most of the Himalayan rivers are perennial, while Peninsular rivers are not.
What does perennial mean in the context of rivers?
Having water throughout the year.
Study Notes
Drainage Basin and Indian Rivers
- A drainage basin is an area of land that drains water into a particular river or lake, and is bounded by a watershed or water divide.
Classification of Indian Rivers
- Indian rivers are divided into two major groups: Himalayan rivers and Peninsular rivers.
Water Divide
- A water divide is a ridge or highland that separates two drainage basins, and is the boundary beyond which water flows into different rivers or lakes.
Characteristics of Himalayan and Peninsular Rivers
- The main difference between Himalayan rivers and Peninsular rivers is their source, flow, and seasonal variability: Himalayan rivers are perennial, fed by melting snow and glaciers, and have a high flow even in the lean season, whereas Peninsular rivers are seasonal, fed by rainwater, and have a low flow during the lean season.
Perennial Rivers
- In the context of rivers, perennial means a river that flows throughout the year, and has a steady and consistent supply of water, often due to a constant source of water such as melting snow or glaciers.
Test your knowledge on drainage systems and river basins with this quiz! Learn about how small streams form the main river and ultimately drain into larger bodies of water. Explore the concept of drainage basins and enhance your understanding of this important geological feature.
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