Rajasthan's Major Canals and Irrigation Projects
In the Rajasthan geography section of REET Level 2 Social Studies, canals and irrigation is an important topic, with direct questions on the Indira Gandhi Canal and the state's other major irrigation projects. This page lays out each canal's source, route and service area with verified facts, in order.
- No direct REET 2024 question, syllabus-based
- Class 6-8 level
- 9 min read
How REET asks this topic
We don't have a verified question on Rajasthan's canals and irrigation from the REET 2024 paper, so we're not showing a made-up old question here. This note is based on the wording of the REET Level 2 Social Studies syllabus (the 'Physical Features and Water Resources of Rajasthan' section) and verified government and standard sources. Since this topic is part of the syllabus, there's a real chance a direct question on the Indira Gandhi Canal's or another canal's source and route could appear in a future paper.
The Indira Gandhi Canal: Rajasthan's largest irrigation project
The Indira Gandhi Canal (earlier named the Rajasthan Canal) is Rajasthan's longest and most important canal project, built to provide both irrigation and drinking water to the state's dry western region — the Thar desert area. It originates at the Harike Barrage in Punjab, at the confluence of the Sutlej and Beas rivers, and the main canal runs about 837 kilometres.
After the assassination of Prime Minister Indira Gandhi in 1984, the canal was renamed the 'Indira Gandhi Canal'; before that, it was called the 'Rajasthan Canal'. The canal passes through Rajasthan's western districts, including Sri Ganganagar, Hanumangarh, Bikaner, Jodhpur (the Phalodi area), Jaisalmer and Barmer, making it possible to grow crops such as wheat, mustard and cotton on land that was previously barren.
The project was built in two phases — Phase I (the older section, around the Sri Ganganagar-Hanumangarh area) and Phase II (extending further to Bikaner, Jaisalmer and Barmer). It is counted among the world's largest canal irrigation projects, because it has provided not just irrigation but drinking water to millions of people in western Rajasthan.
Before this canal arrived, most of western Rajasthan was limited to rain-dependent, low-yield farming. Once the canal reached these districts, the area under crops such as wheat, mustard, cotton and guar grew considerably, and double-cropping became possible in several areas — a change considered one of the biggest events in Rajasthan's economic geography, which is why REET's syllabus gives it special importance.
Key facts about the Indira Gandhi Canal
- Source
- The Harike Barrage (Punjab) — the confluence of the Sutlej and Beas rivers
- Length of the main canal
- About 837 kilometres
- Former name
- Rajasthan Canal (before 1984)
- Main service area
- Sri Ganganagar, Hanumangarh, Bikaner, Jodhpur (Phalodi), Jaisalmer, Barmer
- Purpose
- Both irrigation and drinking-water supply — in the dry region of western Rajasthan
Rajasthan's other major canals and irrigation projects
| Canal / Project | Source / River | Main service area |
|---|---|---|
| Gang Canal | Sutlej river | Sri Ganganagar — one of Rajasthan's oldest large canals, built through the efforts of Bikaner's Maharaja Ganga Singh |
| Chambal Canal Project | The Chambal river (Rana Pratap Sagar, Jawahar Sagar, Gandhi Sagar dams) | Kota, Bundi, Baran, Jhalawar (a joint Rajasthan–Madhya Pradesh project) |
| Narmada Canal Project | The Narmada river (the Sardar Sarovar dam, Gujarat) | Barmer and Jalore districts of southern Rajasthan |
In fact, the largest share of irrigation in Rajasthan comes from wells and tube wells — canals matter mainly in the western dry region and the Chambal basin.
Sources of irrigation in Rajasthan and its tradition of water conservation
Despite being India's largest state, Rajasthan has limited water availability, so wells and tube wells (groundwater) remain the biggest source of irrigation even today, more than canals and ponds. This is exactly why projects like the Indira Gandhi Canal are considered especially important for western Rajasthan, where the groundwater level is very low and its quality is often brackish.
Besides canals, Rajasthan's traditional water-conservation systems — such as baoris (stepwells), kunds, tankas and nadis — have been used for centuries to harvest rainwater in dry areas. These traditional methods still play an important role in the state's water security alongside the modern canal system, especially in areas the canals have not yet reached.
How to teach this to children
Activity
Have children mark the route of the Indira Gandhi Canal on a map of Rajasthan, colouring in the districts it passes through — this is the most effective way to remember its geographic position.
Teaching aid
Putting up a map chart in class showing Rajasthan's major rivers and canals, and a table comparing canals with traditional water sources (baori, tanka), is useful.
Common misconception
Children often assume all of Rajasthan is a waterless desert. Clarify that irrigation systems like the Indira Gandhi Canal and the Chambal Project have made several districts agriculturally prosperous, and that traditional water-conservation systems have also been working for centuries.
Assessment
Map-based questions (such as marking a canal's start and end points) and matching questions like 'which canal's source is which river' are effective assessment methods.
Connecting to life
If children come from a canal-irrigated area, ask them to share their experience of canal or groundwater use in their own village or district — this makes the lesson locally and personally relevant.
Memory trick
Remember — the Indira Gandhi Canal's source is the 'Harike Barrage', located in Punjab, not Rajasthan. And also remember: its earlier name was the 'Rajasthan Canal', changed to the 'Indira Gandhi Canal' after 1984 — REET often asks about this old-new name.
Practice questions
Question 1
What is the point of origin of the Indira Gandhi Canal?
- Aभाखड़ा बाँध
- Bकोटा बैराज
- Cहरिके बैराज
- Dजवाहर सागर बाँध
Explanation
The Indira Gandhi Canal originates at the Harike Barrage in Punjab, at the confluence of the Sutlej and Beas rivers.
Question 2
What was the old name of the Indira Gandhi Canal?
- Aगंग नहर
- Bचंबल नहर
- Cबीकानेर नहर
- Dराजस्थान नहर
Explanation
Before 1984, the Indira Gandhi Canal was called the 'Rajasthan Canal'; its name was changed after Indira Gandhi's assassination.
Question 3
The Indira Gandhi Canal was mainly built to irrigate which part of Rajasthan?
- Aपश्चिमी राजस्थान (थार मरुस्थल क्षेत्र)
- Bपूर्वी राजस्थान
- Cदक्षिणी राजस्थान
- Dमध्य राजस्थान का पहाड़ी क्षेत्र
Explanation
The Indira Gandhi Canal was built mainly for irrigation and drinking water in the dry Thar desert region of western Rajasthan (from Sri Ganganagar to Barmer).
Question 4
The Gang Canal is drawn from which river?
- Aचंबल नदी
- Bसतलुज नदी
- Cलूनी नदी
- Dमाही नदी
Explanation
The Gang Canal is drawn from the Sutlej river and irrigates the Sri Ganganagar area — it is one of Rajasthan's oldest large canals.
Question 5
The Chambal Canal Project mainly irrigates which districts of Rajasthan?
- Aजैसलमेर, बाड़मेर
- Bअजमेर, भीलवाड़ा
- Cकोटा, बूँदी, बारां, झालावाड़
- Dजयपुर, अलवर
Explanation
The Chambal Canal Project (based on the Rana Pratap Sagar, Jawahar Sagar and Gandhi Sagar dams) irrigates the districts of Kota, Bundi, Baran and Jhalawar.
Question 6
What is the largest source of irrigation in Rajasthan?
- Aनहरें
- Bतालाब
- Cवर्षा जल संचयन टांका
- Dकुएँ व नलकूप (भूजल)
Explanation
Because of limited river-water availability in Rajasthan, the largest source of irrigation is wells and tube wells (groundwater); canals are largely limited to the western region and the Chambal basin.
Question 7
Which of the following is included among the traditional rainwater harvesting systems of Rajasthan?
- Aबावड़ी, कुंड, टांका
- Bकेवल आधुनिक बाँध
- Cकेवल नहरें
- Dकेवल नलकूप
Explanation
Baoris, kunds and tankas are centuries-old traditional water-conservation systems of Rajasthan, used to harvest rainwater in dry areas.
Question 8
The Narmada Canal Project provides irrigation facilities to which districts of southern Rajasthan?
- Aजैसलमेर, बीकानेर
- Bबाड़मेर, जालोर
- Cकोटा, बूँदी
- Dअलवर, भरतपुर
Explanation
The Narmada Canal Project (based on Gujarat's Sardar Sarovar dam) brings irrigation facilities to the Barmer and Jalore districts of southern Rajasthan.
Question 9
Which activity would a teacher consider most suitable to help children remember the geographical layout of Rajasthan's canals?
- Aकेवल नाम रटवाना
- Bकोई गतिविधि न करना
- Cमानचित्र पर नहर का मार्ग रंग भरकर चिह्नित करवाना
- Dकेवल परीक्षा में पूछना
Explanation
A map-based activity gives children a direct geographic sense of a canal's route and service area, building a more lasting memory than just memorising names.
Question 10
In how many phases was the Indira Gandhi Canal Project built?
- Aएक चरण में
- Bचार चरणों में
- Cइसका कोई चरण नहीं था
- Dदो चरणों में (चरण-I और चरण-II)
Explanation
The Indira Gandhi Canal Project was built in two phases — Phase I (around the Sri Ganganagar-Hanumangarh area) and Phase II (extending further to Bikaner, Jaisalmer and Barmer).
Frequently asked questions
Where does the Indira Gandhi Canal originate?+
The Indira Gandhi Canal originates at the Harike Barrage in Punjab, located at the confluence of the Sutlej and Beas rivers.
What was the Indira Gandhi Canal's earlier name?+
The Indira Gandhi Canal was earlier called the 'Rajasthan Canal'; its name was changed after the assassination of Prime Minister Indira Gandhi in 1984.
Which districts of Rajasthan does the Indira Gandhi Canal pass through?+
It mainly passes through the districts of Sri Ganganagar, Hanumangarh, Bikaner, Jodhpur (the Phalodi area), Jaisalmer and Barmer.
What is the largest source of irrigation in Rajasthan?+
The largest source of irrigation in Rajasthan is wells and tube wells (groundwater); canals play an important role mainly in the western dry region and the Chambal basin.
How many REET questions come from Rajasthan's canals?+
This topic is part of the REET Level 2 Social Studies syllabus, but REET 2024 had no verified direct question from it — since it's in the syllabus, a question could appear in future.
Why was the Indira Gandhi Canal Project built in two phases?+
In the first phase, irrigation facilities were given to nearby areas around the Sri Ganganagar-Hanumangarh region, and later, in Phase II, the canal was gradually extended further to the more distant dry districts of Bikaner, Jaisalmer and Barmer.
What effect did the arrival of the Indira Gandhi Canal have on farming in western Rajasthan?+
Before the canal, farming was rain-dependent and low-yielding; after the canal arrived, the area under crops such as wheat, mustard, cotton and guar increased, and double-cropping also became possible in several areas.
Read next
Official Sources
Change Log
- 17 September 2026 — English page published — mirrors the fact-checked Hindi page, independently bilingual-accuracy checked