Overview
Sources, PMKSY, and Problems
Canal, tube-well, tank, and micro-irrigation; the PMKSY umbrella and its four components; and the groundwater, waterlogging, and water-dispute problems that shape policy.
Previous Year UPSC-CSE Questions By the end you will be able to draft model answers for the following UPSC questions. Each question carries a collapsible framework showing how to approach it in the exam.
- UPSC Prelims 2014What are the benefits of implementing the 'Integrated Watershed Development Programme'?
- Prevention of soil runoff
- Linking the country's perennial rivers with seasonal rivers
- Rainwater harvesting and recharge of groundwater table
- Regeneration of natural vegetation
Select the correct answer using the code given below.
How to approach this Prelims question
Approach: Watershed programmes are catchment-scale soil-and-water conservation, not river-network engineering. Apply the catchment-scale lens to eliminate the river-interlinking distractor.
Trap to watch: Statement 2 confuses the watershed-development programme with the river-interlinking project under NWDA; the two are distinct policy instruments.
Key facts to recall:
- Watershed programmes operate at catchment scale, not river-basin or national scale
- Core objectives: soil runoff prevention, rainwater harvesting, vegetation regeneration
- River interlinking is a separate NWDA-led proposal
- PMKSY-WDC builds on the earlier Integrated Watershed Management Programme
Answer signal: Correct answer is (c): 1, 3 and 4 only.
- UPSC Prelims 2021With reference to the water on the planet Earth, consider the following statements:
- The amount of water in the rivers and lakes is more than the amount of groundwater.
- The amount of water in polar ice caps and glaciers is more than the amount of groundwater.
Which of the statements given above is/are correct?
How to approach this Prelims question
Approach: Recall the freshwater distribution hierarchy: polar ice and glaciers approximately 68 per cent, groundwater approximately 30 per cent, surface water (rivers, lakes, swamps) the remainder. Apply the hierarchy to evaluate each statement.
Trap to watch: Statement 1 inverts the river-vs-groundwater hierarchy; rivers and lakes hold dramatically less than groundwater.
Key facts to recall:
- Polar ice and glaciers around 68 per cent of freshwater
- Groundwater around 30 per cent of freshwater
- Rivers and lakes hold dramatically less than groundwater
- Indian irrigation is around 65 per cent groundwater-based
Answer signal: Correct answer is (b): 2 only.
- UPSC Prelims 2025The irrigation device called 'Araghatta' was
How to approach this Prelims question
Approach: Araghatta is the chain-of-pots water-wheel that pre-dates modern tube-wells; recall the chain-of-pots imagery.
Trap to watch: Option a (leather water bag with pulley) is the Charas system, distinct from Araghatta.
Key facts to recall:
- Araghatta is a large wheel with earthen pots tied to the spokes
- Bullock-driven or animal-driven rotation lifts water
- Pre-dates modern tube-well technology
- Charas is a separate leather-bag system
Answer signal: Correct answer is (b): large wheel with earthen pots.
Irrigation is the artificial application of water to agricultural land to supplement rainfall, enabling reliable cropping in the kharif lean period, rabi season, and arid regions where rainfall is insufficient or unreliable. India operates the world's largest groundwater well-equipped irrigation system at around 39 million hectares, with groundwater supplying around 65 per cent of the irrigated area. The principal sources of irrigation are canals (perennial and inundation), tube-wells and other wells, tanks (peninsular India), and lift schemes. The umbrella scheme is the Pradhan Mantri Krishi Sinchayee Yojana (PMKSY) launched 2015 with four components: Accelerated Irrigation Benefits Programme (AIBP) for major and medium projects, Har Khet Ko Pani (HKKP) for last-mile water delivery, Per Drop More Crop (PDMC) for micro-irrigation, and Watershed Development (WDC) for rainfed-area soil-water conservation. Top irrigated states include Punjab (around 98 per cent of cultivated area), Haryana (around 88 per cent), and Uttar Pradesh.
Background and Historical Context
Irrigation is the single most important determinant of cropping intensity, yield stability, and the geographic spread of high-yielding-variety adoption in Indian agriculture. The Green Revolution was an irrigation revolution before it was a seed-and-fertiliser revolution: wheat-rice productivity gains tracked closely with canal-and-tube-well expansion in Punjab, Haryana, and western Uttar Pradesh. UPSC Prelims has tested watershed-development programme benefits (UPSC Prelims 2014), planetary water distribution including groundwater volume (UPSC Prelims 2021), and the historical irrigation device Araghatta (UPSC Prelims 2025).
What is the significance of the irrigation architecture? Three operational dimensions follow. The source mix binds canal irrigation to alluvial Indo-Gangetic plains, tube-well irrigation to the same alluvial regions plus peninsular hard-rock fringes, and tank irrigation to the peninsular plateau where rolling topography supports small reservoirs. The scheme architecture sits under PMKSY as the post-2015 umbrella, with AIBP for major-medium projects under the Ministry of Jal Shakti, PDMC for micro-irrigation under the Ministry of Agriculture, and WDC under the Ministry of Rural Development. The problem-and-policy convergence spans groundwater depletion in Punjab-Haryana-Western UP, waterlogging-induced salinisation in canal command areas covered in Soils Part 7 (Saline and Alkaline), and Inter-State water disputes covered in the Drainage Patterns of India analysis.
Current policy threads include the PMKSY second cycle extended to 2021-26 with continued component-wise funding; the Per Drop More Crop push for drip and sprinkler adoption now covering several million hectares; the Atal Bhujal Yojana launched 2019 for community-led groundwater management in seven over-exploited states; the Jal Jeevan Mission for rural piped water connecting irrigation-watershed planning to drinking-water security; the National Mission for Sustainable Agriculture (NMSA) Rainfed Area Development component; and the National Water Development Agency (NWDA) coordinating the long-pending river-interlinking proposals.
Introduction: Why Irrigation Defines Indian Agriculture
Scale, dependence, and the irrigation imperative
Indian agriculture is structurally monsoon-dependent with around 60 per cent of cultivated area receiving rainfall through the southwest monsoon and limited supplementary irrigation. The remaining 40 per cent, supported by irrigation, accounts for the bulk of marketed surplus and the high-yielding-variety wheat-rice belt. Irrigation underwrites cropping intensity (multiple crops per year), yield stability (assured water in the rabi season), and the geographic spread of input-intensive cultivation.
India's irrigated area is around 70 million hectares in recent years, with groundwater supplying around 65 per cent. The country operates the world's largest groundwater well-equipped irrigation system at around 39 million hectares. Surface irrigation through canals adds around 16 million hectares, tanks contribute around 2 million hectares (peninsular India), and remaining sources cover lift and other minor systems.
- (i) Canal irrigation: Perennial canals (Indo-Gangetic Plain, Punjab-Haryana doab) plus inundation canals (Sundarbans, deltaic regions); supplies around 25 per cent of irrigated area; Punjab, Haryana, Uttar Pradesh dominate.
- (ii) Tube-well and well irrigation: Largest source at around 65 per cent of irrigated area; Indo-Gangetic Plain, peninsular hard-rock fringe, and the Deccan Plateau use tube-wells extensively; powered by diesel or grid electricity.
- (iii) Tank irrigation: Peninsular plateau (Tamil Nadu, Andhra Pradesh, Karnataka, Telangana); supplies around 3 per cent of irrigated area; rolling topography supports small reservoirs.
- (iv) Lift irrigation: Pumping schemes lifting river or canal water to elevated fields; Maharashtra, Andhra Pradesh, Telangana significant users.
- (v) Micro-irrigation: Drip and sprinkler systems under Per Drop More Crop component of PMKSY; rapid expansion in horticulture and dryland cropping; water-use efficiency 70 to 95 per cent versus flood irrigation.
| Method | Water source | Dominant region | Share of irrigated area | Distinguishing feature |
|---|---|---|---|---|
| Canal | Surface (rivers, reservoirs) | Indo-Gangetic Plain | Around 25 per cent | Perennial and inundation canals; large command areas |
| Tube-well and well | Groundwater | Alluvial plains, peninsular fringe | Around 65 per cent (largest) | Farmer-controlled; energy-intensive; depletion risk |
| Tank | Stored surface runoff | Peninsular plateau (Tamil Nadu, Andhra Pradesh) | Around 3 per cent | Small reservoirs suited to undulating terrain |
| Micro-irrigation | Pressurised surface or groundwater | Horticulture and dryland tracts | Expanding under Per Drop More Crop | Drip and sprinkler; 70 to 95 per cent water-use efficiency |
PMKSY: Umbrella with Four Components
AIBP plus HKKP plus Per Drop More Crop plus Watershed Development
The Pradhan Mantri Krishi Sinchayee Yojana, launched 2015 and extended in successive plan cycles, consolidates four pre-existing irrigation programmes into a single umbrella with explicit field-water-cycle integration. The vision phrase is Har Khet Ko Pani (water to every field) plus Per Drop More Crop (water-use efficiency). The umbrella covers major and medium irrigation projects, last-mile delivery to the farm gate, micro-irrigation equipment installation, and watershed development for rainfed area soil-water conservation.
- (a) Accelerated Irrigation Benefits Programme (AIBP): Funds major and medium irrigation projects to bridge the implementation deficit; Ministry of Jal Shakti’s Department of Water Resources is the nodal department; AIBP itself dates to 1996-97.
- (b) Har Khet Ko Pani (HKKP): Last-mile water delivery from canal head to farm gate; covers Command Area Development and Water Management (CADWM) for existing canal command areas; Ministry of Jal Shakti.
- (c) Per Drop More Crop (PDMC): Micro-irrigation push for drip and sprinkler adoption; raises water-use efficiency in horticulture and dryland cropping; Ministry of Agriculture and Farmers Welfare is the nodal ministry.
- (d) Watershed Development Component (WDC): Soil-and-water conservation in rainfed areas building on the earlier Integrated Watershed Management Programme; Ministry of Rural Development.
- (e) Cross-cutting features: Convergence of irrigation, soil-and-water conservation, and groundwater management at the river-basin scale; District Irrigation Plans and State Irrigation Plans as planning vehicles.
Problems: Groundwater Depletion, Waterlogging, Water Disputes
Three problem clusters across the irrigation system
Indian irrigation faces three structurally distinct problem clusters. Groundwater depletion in Punjab-Haryana-Western Uttar Pradesh, Tamil Nadu, and parts of Gujarat-Rajasthan reflects over-pumping driven by free or subsidised electricity for tube-wells in the wheat-rice belt. Waterlogging and salinisation in canal command areas reflects high water application without commensurate drainage.
Inter-State water disputes over the Cauvery, Krishna, and Godavari rivers reflect federal-architecture friction. The waterlogging cluster produces the saline-alkaline soils detailed in Soils Part 7, while the dispute cluster connects to the Drainage Patterns of India analysis.
- (i) Groundwater depletion: Over-exploited blocks concentrated in Punjab, Haryana, Western Uttar Pradesh, Tamil Nadu, parts of Gujarat-Rajasthan; Central Ground Water Board categorises blocks as Safe, Semi-Critical, Critical, Over-Exploited; the Atal Bhujal Yojana launched 2019 targets community-led management in seven over-exploited states.
- (ii) Waterlogging and salinisation: Canal command areas without adequate drainage face rising water table and capillary-rise salinity; cross-reference to Soils Part 7 (Saline and Alkaline soils).
- (iii) Inter-State water disputes: Cauvery (Karnataka-Tamil Nadu), Krishna (Karnataka-Andhra Pradesh-Telangana-Maharashtra), Godavari (multiple riparian states), Ravi-Beas (Punjab-Haryana); tribunals constituted under the Inter-State River Water Disputes Act 1956.
- (iv) Energy-water-food nexus: Free or heavily subsidised electricity for agricultural pumps drives over-extraction; the policy challenge is rationalising power-supply incentives without undercutting farmer income.
- (v) Climate-change pressure: Monsoon variability, declining glacial-melt contribution to Himalayan rivers in the long term, and rising irrigation demand under warming all stress the irrigation system.
Comparative Architecture and Contemporary Policy
Institutions and contemporary missions across the irrigation system
Indian irrigation governance distributes responsibility across the Ministry of Jal Shakti (water resources and major-medium projects), the Ministry of Agriculture and Farmers Welfare (micro-irrigation), the Ministry of Rural Development (watershed), and state-level departments and tribunals. The cross-institutional comparison clarifies how policy responds to the source-mix, the problem clusters, and the climate-change pressure on water availability.
- (a) Ministry of Jal Shakti: Created 2019 by merging the earlier Ministry of Water Resources, River Development and Ganga Rejuvenation with the Ministry of Drinking Water and Sanitation; nodal for AIBP and HKKP.
- (b) Central Ground Water Board (CGWB): Categorises assessment units (blocks, mandals, talukas) as Safe, Semi-Critical, Critical, Over-Exploited; publishes the National Compilation on Dynamic Ground Water Resources.
- (c) NWDA (National Water Development Agency): Coordinates river-interlinking proposals under the National Perspective Plan for Water Resources Development; Ken-Betwa link approved 2021 as the first major project.
- (d) Atal Bhujal Yojana 2019: World Bank co-financed scheme for community-led groundwater management in seven over-exploited states (Gujarat, Haryana, Karnataka, Madhya Pradesh, Maharashtra, Rajasthan, Uttar Pradesh).
- (e) Jal Jeevan Mission: Rural piped water connection mission; connects irrigation-watershed planning to drinking-water security at the village level.
The institutional-design lesson is that irrigation governance has progressively integrated the supply-side (major-medium projects, AIBP), the delivery-side (Har Khet Ko Pani, command-area development), the efficiency-side (Per Drop More Crop micro-irrigation), and the conservation-side (Watershed Development, Atal Bhujal Yojana) into a converged water-cycle framework. The remaining policy frontier is energy-water-food nexus reform, where subsidised power for agricultural pumps continues to drive groundwater over-extraction even as scheme-level reforms target water-use efficiency.
Prelims MCQ practice
Each question below tests one specific concept on the topic. Click to reveal the answer and a full option-wise explanation.
Q1. Consider the following statements about irrigation sources in India:
- Around 65 per cent of India's net irrigated area is served by groundwater (tube-wells and dug wells) rather than canals or tanks.
- Canal irrigation share has declined relative to groundwater share since the 1970s.
- Tank irrigation is a major source primarily in the Indo-Gangetic Plain.
Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Show answer and explanation
Answer: 1 and 2 only
Explanation.
Correct: a (1 and 2 only). Statement 1 is correct: groundwater (tube-wells, dug wells) serves around 65 per cent of net irrigated area. Statement 2 is correct: canal share has declined relative to groundwater since the 1970s as tube-well drilling intensified. Statement 3 is wrong: tank irrigation is concentrated primarily in the PENINSULAR plateau region (Tamil Nadu, Andhra Pradesh, Karnataka), NOT the Indo-Gangetic Plain.
Q2. Consider the following statements about Pradhan Mantri Krishi Sinchayee Yojana (PMKSY):
- PMKSY was launched in 2015 as the umbrella irrigation scheme integrating earlier irrigation programmes.
- PMKSY's Per Drop More Crop component promotes drip and sprinkler micro-irrigation.
Which of the statements given above is/are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
Show answer and explanation
Answer: Both 1 and 2
Explanation.
Correct: c (Both 1 and 2). Statement 1 is correct: PMKSY was launched 2015 as the umbrella irrigation scheme integrating AIBP, IWMP, On-Farm Water Management, and other earlier programmes. Statement 2 is correct: Per Drop More Crop is the PMKSY component promoting drip and sprinkler micro-irrigation.
Q3. Consider the following statements about major canal-irrigation systems in India:
- Bhakra-Nangal canal system serves Punjab, Haryana, and Rajasthan.
- Indira Gandhi Canal (formerly Rajasthan Canal) carries water from the Sutlej and Beas rivers to the Thar desert tract of Rajasthan.
- Nagarjuna Sagar canal system serves the Andhra Pradesh-Telangana command area on the Krishna river.
Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Show answer and explanation
Answer: 1, 2 and 3
Explanation.
Correct: d (1, 2 and 3). All three statements are correct. Bhakra-Nangal commissioned phase-wise from 1954 serves Punjab, Haryana, and Rajasthan. Indira Gandhi Canal (sometimes IGNP) carries Sutlej-Beas water to the Thar tract. Nagarjuna Sagar serves the Krishna-river command area in Andhra Pradesh and Telangana.
Q4. Consider the following statements about micro-irrigation efficiency in India:
- Drip irrigation can achieve 90-95 per cent water-use efficiency compared to around 35-40 per cent for traditional flood irrigation.
- Sprinkler irrigation is suited to undulating terrain and crops where uniform water application is needed.
- Micro-irrigation in India is currently subsidised under the Per Drop More Crop component of PMKSY.
Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Show answer and explanation
Answer: 1, 2 and 3
Explanation.
Correct: d (1, 2 and 3). All three statements are correct. Drip achieves 90-95 per cent water-use efficiency versus 35-40 per cent for flood irrigation. Sprinkler suits undulating terrain and uniform-water-need crops. Per Drop More Crop under PMKSY subsidises drip and sprinkler adoption.
Q5. Consider the following statements about groundwater irrigation in India:
- India has the largest area under groundwater irrigation in the world.
- Central Ground Water Authority (CGWA) is constituted under the Environment (Protection) Act 1986.
- Groundwater extraction in Punjab and Haryana is fully balanced by natural recharge with no overdraft.
Which of the statements given above are correct?
- 1 and 2 only
- 2 and 3 only
- 1 and 3 only
- 1, 2 and 3
Show answer and explanation
Answer: 1 and 2 only
Explanation.
Correct: a (1 and 2 only). Statement 1 is correct: India has the largest area under groundwater irrigation globally. Statement 2 is correct: CGWA is constituted 1997 under Section 3(3) of the Environment Protection Act 1986. Statement 3 is wrong: Punjab and Haryana groundwater is heavily OVERDRAWN (water table fell substantially through the GR phase); extraction outstrips recharge, the opposite of 'fully balanced'.
Q6. Consider the following statements about watershed development in India:
- Watershed development promotes integrated land-water management at the micro-watershed level (typically 500-1000 hectares).
- Integrated Watershed Management Programme (IWMP) was subsumed under PMKSY's Watershed Development component in 2015.
Which of the statements given above is/are correct?
- 1 only
- 2 only
- Both 1 and 2
- Neither 1 nor 2
Show answer and explanation
Answer: Both 1 and 2
Explanation.
Correct: c (Both 1 and 2). Statement 1 is correct: watershed development manages land and water at micro-watershed scale (typically 500-1000 hectares). Statement 2 is correct: IWMP (originally Hariyali, then IWMP from 2009-10) was subsumed under PMKSY's Watershed Development component from 2015.
Sources
- NCERT Class 12 India People and Economy, Chapter 6 (Water Resources), pp 61-66
- Pradhan Mantri Krishi Sinchayee Yojana (PMKSY)
- Department of Water Resources, River Development and Ganga Rejuvenation (Ministry of Jal Shakti)
- National Water Development Agency (NWDA)
- Central Ground Water Board (CGWB)
- Department of Agriculture and Farmers Welfare
- Atal Bhujal Yojana
- Wikipedia: Irrigation in India
Disclaimer
This article explains Indian irrigation for UPSC preparation: the principal sources, the PMKSY umbrella and its four components, micro-irrigation, and the problems of groundwater depletion, waterlogging-salinity, and water disputes. Scheme details and figures are cross-checked against NCERT and the authoritative sources cited below. It is an explainer, not a substitute for primary government documents.
