Northern Plains of India – Complete Exam Notes
The Northern Plains of India are one of the most important physiographic divisions of India. They are highly significant for JKSSB, SSC, UPSC, State PSC, Railways and other competitive examinations.
1. Introduction
The Northern Plains are a vast alluvial plain lying to the south of the Himalayas.
They were formed mainly by the deposition of sediments brought by three major river systems:
Indus
Ganga
Brahmaputra
Key Facts
| Feature | Northern Plains |
|---|---|
| Location | South of the Himalayas |
| Formation | Deposition of alluvium |
| Major rivers | Indus, Ganga, Brahmaputra |
| Type | Alluvial plain |
| General slope | West to east |
| Major importance | Agriculture and dense population |
| Major soils | Alluvial soils |
| Major regions | Punjab, Ganga and Brahmaputra Plains |
The Northern Plains extend for about 2,400 km from west to east and have a varying width of roughly 150–300 km.
2. Formation of the Northern Plains
The Northern Plains were formed over millions of years through the deposition of sediments brought by Himalayan and Peninsular rivers.
Formation process
Himalayan uplift → formation of foredeep basin → rivers carry sediments → deposition of alluvium → formation of extensive plains
The major sediments include:
Sand
SiltClay
Gravel
Pebbles
Important Exam Point
The Northern Plains are structurally a depression or basin filled with alluvial deposits.
3. Major Divisions of Northern Plains
The Northern Plains can broadly be divided into:
A. Punjab Plains
B. Ganga Plains
C. Brahmaputra Plains
4. Punjab Plains
The Punjab Plains occupy the western part of the Northern Plains.
They are mainly formed by the Indus and its tributaries.
Major rivers
Jhelum
ChenabRavi
Beas
Sutlej
Most of the Punjab Plains lie in Pakistan, while a smaller portion occurs in northwestern India.
Important Point
The term Punjab literally means the “Land of Five Rivers.”
The five rivers traditionally associated with Punjab are:
Jhelum
Chenab
Ravi
Beas
Sutlej
5. Ganga Plains
The Ganga Plains form the largest part of the Northern Plains.
They extend from the Yamuna River in the west to the Brahmaputra valley in the east.
Major states associated with the Ganga Plains include:
Uttar Pradesh
BiharJharkhand
West Bengal
Parts of Haryana, Rajasthan and Madhya Pradesh are associated with the broader Ganga basin/upper plains.
Major tributaries
Left-bank tributaries:
Ramganga
GomtiGhaghara
Gandak
Kosi
Right-bank tributaries:
Yamuna
SonExam Point
The Yamuna is the major right-bank tributary of the Ganga.
6. Brahmaputra Plains
The Brahmaputra Plains are located mainly in Assam.
The Brahmaputra flows through a relatively narrow valley surrounded by hills.
Important characteristics
Extensive riverine deposits
Frequent floods
Braided river channels
Formation of river islands
Rich alluvial soils
Important Exam Fact
Majuli, located in the Brahmaputra River system in Assam, is famous as a major river island.
7. Physiographic Divisions of Northern Plains
From north to south, the Northern Plains can be divided into:
Bhabar
Terai
Bhangar
Khadar
These are extremely important for competitive exams.
8. Bhabar
The Bhabar is a narrow belt along the foothills of the Shiwalik Himalayas.
Characteristics
Width: approximately 8–16 km
Made of pebbles, cobbles and coarse sediments
Highly porous
Streams often disappear underground
Lies immediately south of the Shiwaliks
Why do streams disappear?
Because the coarse deposits have large spaces through which water easily infiltrates underground.
Exam Trick
Bhabar = Pebbles + Porous + Disappearing Streams
9. Terai
The Terai lies immediately south of the Bhabar.
When streams emerging from the Himalayas enter the finer sediments of the Terai, they re-emerge on the surface.
Characteristics
Wet and marshy region
High groundwater
Dense vegetation
Historically rich in forests and wildlife
Suitable for agriculture after drainage and reclamation
Exam Trick
Bhabar → streams disappear
Terai → streams reappear
10. Bhangar
The Bhangar represents the older alluvium of the Northern Plains.
It is generally found above the floodplains.
Characteristics
Older alluvial deposits
Lies above the active floodplain
Contains calcareous concretions called kankar
Comparatively less fertile than Khadar
Not renewed annually by floods
Important Point
Bhangar = Old Alluvium
11. Khadar
The Khadar represents the newer alluvium.
It occurs in the active floodplains of rivers.
Characteristics
New alluvial deposits
Renewed almost every year by floods
Very fertile
Fine sediments
Located closer to river channels
Important Point
Khadar = New Alluvium
12. Bhangar vs Khadar
| Feature | Bhangar | Khadar |
|---|---|---|
| Age | Older alluvium | Newer alluvium |
| Location | Higher terraces | Lower floodplains |
| Flooding | Generally not annually flooded | Frequently affected by floods |
| Fertility | Comparatively less fertile | More fertile |
| Renewal | Not regularly renewed | Regularly renewed |
| Kankar | Common | Generally absent |
| Importance | Older terrace | Active floodplain |
Easy Memory Trick
Bhangar = Before/old
Khadar = Current/new
13. Doab
The word Doab means a tract of land lying between two rivers.
Do = Two
Ab = Water
Therefore:
Doab = Land between two rivers
Famous Doabs of Punjab
| Doab | Rivers |
|---|---|
| Bist Jalandhar Doab | Beas – Sutlej |
| Bari Doab | Ravi – Beas |
| Rechna Doab | Ravi – Chenab |
| Chaj Doab | Chenab – Jhelum |
| Sind Sagar Doab | Jhelum – Indus |
Important Exam Point
The Bist Jalandhar Doab lies between the Beas and Sutlej.
14. Important Features of Northern Plains
1. Extensive Alluvial Deposits
The plains contain thick layers of sediments deposited by rivers.
2. Very Fertile
Alluvial soil makes the region highly suitable for agriculture.
3. Dense Population
The availability of:
fertile soil
water
flat land
favourable conditions
has encouraged dense settlement.
4. Agricultural Importance
Major crops include:
Rice
Wheat
Sugarcane
Maize
Pulses
Oilseeds
Jute
5. Irrigation
The plains have extensive irrigation networks using:
Canals
Wells
Tube wells
Rivers
15. Important Riverine Landforms
The rivers of the Northern Plains create several important landforms.
Meanders
A meander is a winding curve or bend in a river channel.
Ox-bow Lake
When a meander gets cut off from the main river channel, it may form an ox-bow lake.
Floodplain
A flat area beside a river that is periodically flooded and receives sediment deposition.
Natural Levees
Raised embankments formed naturally along river banks due to deposition during floods.
Delta
A depositional landform formed near the mouth of a river.
The Ganga-Brahmaputra delta is one of the world's largest deltaic regions.
16. Important Regional Terms
Punjab Plains
Associated mainly with the Indus river system.
Ganga Plains
Associated mainly with the Ganga and its tributaries.
Brahmaputra Plains
Associated mainly with the Brahmaputra valley.
Bhabar
Coarse, porous belt at Himalayan foothills.
Terai
Wet belt south of Bhabar.
Bhangar
Older alluvium.
Khadar
Newer alluvium.
Doab
Land between two rivers.
17. Economic Importance
The Northern Plains are often described as the agricultural heartland of India.
Agriculture
Major agricultural products include:
Wheat
Rice
Sugarcane
Jute
Maize
Pulses
Oilseeds
Industries
The availability of agricultural raw materials has encouraged industries such as:
Sugar
Cotton textiles
Jute
Food processing
Paper
Transport
The flat terrain facilitates:
Roads
Railways
Inland waterways
Therefore, the Northern Plains have played a major role in the development of India's transport network.
18. Why Are Northern Plains Densely Populated?
The major reasons are:
Fertile alluvial soil
Abundant water
Flat terrain
Suitable climate
Extensive irrigation
Agricultural opportunities
Development of cities and industries
Good transport connectivity
19. Important One-Liner Facts
Northern Plains are mainly alluvial plains.
They were formed largely by the Indus, Ganga and Brahmaputra river systems.
The plains lie south of the Himalayas.
Bhabar lies along the foothills of the Shiwaliks.
Bhabar is made mainly of coarse sediments and pebbles.
Streams often disappear in the Bhabar.
Streams re-emerge in the Terai.
Terai is generally a wet and marshy belt.
Bhangar is older alluvium.
Khadar is newer alluvium.
Kankar is commonly associated with Bhangar.
Khadar is generally more fertile than Bhangar.
Doab means land between two rivers.
Punjab is traditionally known as the Land of Five Rivers.
The Ganga Plains constitute a major portion of the Northern Plains.
The Brahmaputra Plains are mainly associated with Assam.
The Northern Plains are highly important for agriculture.
Wheat and rice are major crops of the plains.
The Ganga-Brahmaputra system produces a huge amount of alluvial sediment.
The flat terrain makes the region favourable for transport and settlement.
20. MCQs – Northern Plains
1. The Northern Plains of India are primarily formed by:
A) Volcanic activity
B) River deposition
C) Wind deposition
D) Glacial erosion
Answer: B) River deposition
2. Which three major river systems are associated with the formation of the Northern Plains?
A) Narmada, Tapi and Mahanadi
B) Godavari, Krishna and Kaveri
C) Indus, Ganga and Brahmaputra
D) Mahi, Sabarmati and Luni
Answer: C) Indus, Ganga and Brahmaputra
3. The Northern Plains lie mainly:
A) North of the Himalayas
B) South of the Himalayas
C) South of the Deccan Plateau
D) East of the Western Ghats
Answer: B) South of the Himalayas
4. Bhabar is located:
A) Along the foothills of the Shiwaliks
B) Along the eastern coast
C) In the Deccan Plateau
D) In the Thar Desert
Answer: A) Along the foothills of the Shiwaliks
5. Which type of deposits are dominant in the Bhabar region?
A) Fine clay
B) Coarse pebbles and sediments
C) Black soil
D) Laterite
Answer: B) Coarse pebbles and sediments
6. Streams commonly disappear underground in:
A) Khadar
B) Bhangar
C) Bhabar
D) Terai
Answer: C) Bhabar
7. Streams re-emerge on the surface in:
A) Bhabar
B) Terai
C) Bhangar
D) Doab
Answer: B) Terai
8. Which is known as the older alluvium?
A) Khadar
B) Bhangar
C) Terai
D) Bhabar
Answer: B) Bhangar
9. Which is known as the newer alluvium?
A) Bhangar
B) Bhabar
C) Khadar
D) Terai
Answer: C) Khadar
10. Kankar is mainly associated with:
A) Khadar
B) Bhangar
C) Terai
D) Bhabar
Answer: B) Bhangar
11. Which is generally more fertile?
A) Bhangar
B) Khadar
C) Bhabar
D) Rocky plateau
Answer: B) Khadar
12. The term Doab refers to:
A) Land between two mountains
B) Land between two rivers
C) Land between two deserts
D) Land between two plateaus
Answer: B) Land between two rivers
13. Bist Jalandhar Doab lies between:
A) Ravi and Beas
B) Beas and Sutlej
C) Chenab and Jhelum
D) Jhelum and Indus
Answer: B) Beas and Sutlej
14. Punjab is traditionally known as:
A) Land of Seven Rivers
B) Land of Five Rivers
C) Land of Three Rivers
D) Land of Ten Rivers
Answer: B) Land of Five Rivers
15. Which river system is mainly associated with the Punjab Plains?
A) Indus
B) Narmada
C) Godavari
D) Mahanadi
Answer: A) Indus
16. The Brahmaputra Plains are mainly located in:
A) Rajasthan
B) Assam
C) Gujarat
D) Maharashtra
Answer: B) Assam
17. Which of the following is a right-bank tributary of the Ganga?
A) Ghaghara
B) Gandak
C) Kosi
D) Yamuna
Answer: D) Yamuna
18. Which of the following is a left-bank tributary of the Ganga?
A) Yamuna
B) Son
C) Ghaghara
D) Chambal
Answer: C) Ghaghara
19. Which soil is most characteristic of the Northern Plains?
A) Laterite soil
B) Black soil
C) Alluvial soil
D) Red soil
Answer: C) Alluvial soil
20. The Northern Plains are particularly important for:
A) Plantation forestry only
B) Agriculture
C) Mining of metallic minerals
D) Marine fishing
Answer: B) Agriculture
21. Statement-Type MCQs
Question 21
Consider the following statements about the Bhabar region:
It is located along the foothills of the Shiwaliks.
It contains coarse and porous deposits.
Streams commonly disappear underground in this region.
Which of the statements given above are correct?
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
Answer: D) 1, 2 and 3
Question 22
Consider the following statements about Terai:
It lies south of Bhabar.
It is generally wet and marshy.
Streams that disappear in Bhabar may reappear in Terai.
Which statements are correct?
A) 1 only
B) 1 and 2 only
C) 2 and 3 only
D) 1, 2 and 3
Answer: D) 1, 2 and 3
Question 23
Consider the following statements:
Bhangar represents older alluvium.
Khadar represents newer alluvium.
Khadar is generally renewed by floods.
Kankar is associated with Bhangar.
Which of the statements are correct?
A) 1 and 2 only
B) 1, 2 and 3 only
C) 2, 3 and 4 only
D) 1, 2, 3 and 4
Answer: D) 1, 2, 3 and 4
Question 24
Consider the following statements about the Northern Plains:
They were formed mainly by river deposition.
They contain extensive alluvial soils.
They are among India's major agricultural regions.
Their terrain is generally flat.
Which of the statements are correct?
A) 1 and 2 only
B) 1, 2 and 3 only
C) 2, 3 and 4 only
D) 1, 2, 3 and 4
Answer: D) 1, 2, 3 and 4
Question 25
Match the following:
| Region | Characteristic |
|---|---|
| 1. Bhabar | a. Older alluvium |
| 2. Terai | b. Newer alluvium |
| 3. Bhangar | c. Streams re-emerge |
| 4. Khadar | d. Streams disappear |
Choose the correct code:
A) 1-d, 2-c, 3-a, 4-b
B) 1-c, 2-d, 3-b, 4-a
C) 1-a, 2-b, 3-c, 4-d
D) 1-b, 2-a, 3-d, 4-c
Answer: A) 1-d, 2-c, 3-a, 4-b
22. Quick Revision Table
| Term | Remember |
|---|---|
| Northern Plains | Alluvial plains |
| Main rivers | Indus, Ganga, Brahmaputra |
| Bhabar | Coarse + porous |
| Bhabar streams | Disappear |
| Terai | Wet + marshy |
| Terai streams | Reappear |
| Bhangar | Old alluvium |
| Khadar | New alluvium |
| Kankar | Bhangar |
| More fertile | Khadar |
| Doab | Land between two rivers |
| Punjab | Five Rivers |
| Punjab Plains | Indus system |
| Ganga Plains | Ganga system |
| Brahmaputra Plains | Assam |
| Major economic activity | Agriculture |
⭐ Most Important Exam Formula
Bhabar → Disappear → Terai → Reappear
Bhangar → Old Alluvium → Kankar
Khadar → New Alluvium → Fresh deposition → More fertile
Doab → Land between Two Rivers
Northern Plains → Indus + Ganga + Brahmaputra