The groundwater potential of the gangetic valley is on a serious decline. How may it affect the food security of India?
Approach · directive: “how”
What it asks · Explain why groundwater in the Ganga plains is declining and trace its effects on food security — availability, access, utilisation and stability.
The question has 2 parts — answer each
- Explain the serious decline in the groundwater potential of the Gangetic valley: causes and evidence
- Analyse how it may affect India's food security — availability, access, utilisation and stability — and how the risk can be contained
Open with · The alluvial aquifers of the Indo-Gangetic plain irrigate the rice–wheat belt that feeds the central pool, yet in many blocks they are drawn faster than they recharge.
Cover
- Causes: over-pumping for rice–wheat; free or cheap farm power; assured procurement favouring water-intensive crops; lower recharge from paving and erratic rains.
- Hotspots: north-west (Punjab, Haryana, western UP) faces falling water tables; the middle and lower Ganga faces arsenic contamination.
- Availability: deeper water tables raise costs, shrink irrigated area and yields — risk to the wheat and rice that fill buffer stocks.
- Access: small farmers cannot afford deeper borewells; debt and exit from farming reduce household food security.
- Utilisation: contaminated groundwater (arsenic, fluoride) harms health and nutrition.
- Stability: shocks in the grain bowl threaten PDS commitments under the National Food Security Act.
- Responses: Atal Bhujal Yojana, crop diversification, micro-irrigation under PMKSY, direct-seeded rice, metered power, aquifer mapping.
Close with · India's food security depends on turning the Gangetic plain from a groundwater mine into a managed, recharged commons.
Add value (verified)
- Dynamic Ground Water Resources Assessment 2024: 751 of 6,746 assessment units (11.1%) are over-exploited. Dynamic Ground Water Resource Assessment Report 2024 — PIB, Ministry of Jal Shakti ↗“206 (3.05 %) assessment units, have been categorized as ‘Critical’ and 751 (11.1%) assessment units have been categorized as ‘Over-exploited’”
- The same assessment puts India's average stage of groundwater extraction at about 60%. Dynamic Ground Water Resource Assessment Report 2024 — PIB, Ministry of Jal Shakti ↗“The annual groundwater extraction for all uses is 245.64 BCM. The average stage of groundwater extraction for the country stands at 60.47 %.”
- CGWB's Punjab report (December 2024): the state's stage of groundwater extraction was 163.76% in GWRA-2023 and 156.87% in GWRA-2024 — far above the 100% mark that defines over-exploitation. Dynamic Ground Water Resources & Ground Water Quality of Punjab, 2024 — Central Ground Water Board, Ministry of Jal Shakti ↗“Stage of Ground Water Extrac- tion (in %) 164.42 165.99 163.76 165.77 156.87”
Question: UPSC's CS (Main) 2024, GS Paper I — paper ↗. Approach: Minimalist IAS, checked 1 Oct 2026 (how we verify) — UPSC publishes no model answers. ·
Model answer · 310 words (UPSC limit 250) · Minimalist IAS
The alluvial aquifers of the Indo-Gangetic plain irrigate the rice–wheat belt that fills the central pool, yet water is drawn faster than it recharges: the CGWB's 2024 assessment finds 751 of 6,746 units over-exploited, and in the north-western plains Punjab's stage of extraction stood at 163.76% (GWRA-2023).
Why the decline
- Over-pumping for paddy and wheat in a semi-arid north-west, supported by free or flat-rate farm power and assured procurement that rewards water-intensive crops.
- Falling recharge: paved land, canal lining and shorter, more erratic monsoon spells; deeper tubewells chase the receding table.
- Quality: in the middle and lower Ganga (Bihar, West Bengal, eastern UP) arsenic and fluoride make water unfit even where it is plentiful.
Effects on food security
- Availability: the plains supply most of the wheat and much of the rice procured for the PDS; deeper water tables raise pumping costs, shrink irrigated area and cut yields, threatening buffer stocks.
- Access: small and marginal farmers cannot afford deeper borewells and depend on water sellers; debt, exit from farming and lower rural wages erode purchasing power.
- Utilisation: arsenic and fluoride in drinking water and crops damage health and nutrient absorption, so calories do not become nutrition.
- Stability: a single grain bowl without a groundwater buffer makes drought years volatile; National Food Security Act entitlements for two-thirds of the population rest on it, and price spikes could force export bans.
Containing the risk
- Demand: crop diversification away from paddy (Haryana's Mera Pani Meri Virasat), direct-seeded rice, millets, and shifting procurement to water-rich eastern states.
- Efficiency and power: micro-irrigation under PMKSY, Punjab's 2009 law delaying paddy transplanting, metered or solar feeders (PM-KUSUM) that reward saving.
- Supply and governance: Atal Bhujal Yojana's community water budgets, aquifer mapping, recharge structures, and treating aquifers as a regulated commons.
India's food security depends on turning the Gangetic plain from a groundwater mine into a managed, recharged commons.
Written by Minimalist IAS from facts checked at source (how we verify) — a little fuller than exam length, so every part of the question is covered; in the hall, keep the structure and trim the detail. UPSC publishes no model answers: compare your structure and coverage with this, then write your own.