Class 11 Geography - HARYANA
Drainage System
The chapter 'Drainage System' in Class 11 Geography for Haryana (BSEH) students explores the river systems of India and their evolutionary history. It covers the Himalayan and Peninsular river systems, drainage patterns like dendritic and radial, and river basins, focusing on the Ganga, Brahmaputra, and Indus networks. Understanding this chapter is crucial for board exams as it carries high weightage in map-work and direct theoretical questions regarding India's hydrology and water resource management.
Start Learning FreeKey Concepts
Drainage Basin
An area drained by a single river system, encompassing all its tributaries and distributaries.
Watershed
A ridge or high ground that separates two adjacent drainage basins, acting as a water divide.
Himalayan Drainage System
Perennial river systems originating from the Himalayas, characterized by deep gorges and extensive floodplains.
Peninsular Drainage System
Older, non-perennial river systems characterized by broad, shallow valleys and seasonal water flow dependent on rainfall.
Drainage Patterns
The spatial arrangement of streams in a region, such as dendritic, trellis, rectangular, and radial patterns determined by the underlying geology.
Important Formulas
Board Exam Info
This chapter typically carries around 4 to 6 marks in the Haryana Board (BSEH) Class 11 Geography exams. Common question types include short-answer questions differentiating between Himalayan and Peninsular rivers, map-marking of major rivers and dams, and long-answer questions explaining various drainage patterns.
Frequently Asked Questions
Himalayan rivers are perennial and fed by melting snow and rain, whereas Peninsular rivers are seasonal and rely entirely on monsoon rainfall.
Himalayan rivers are perennial as they are fed by melting snow and rain, while Peninsular rivers are seasonal and depend entirely on monsoon rainfall.
What is a water divide?
A water divide is an elevated boundary, such as a mountain range or upland, that separates two neighboring drainage basins.
Why do Peninsular rivers flow towards the east mostly?
Due to the general slope of the Peninsular plateau from west to east, most major rivers like the Mahanadi, Godavari, Krishna, and Cauvery drain into the Bay of Bengal.
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