The groundwater potential of the gangetic valley is on a serious decline. How may it affect the food security of India? (Answer…

The Gangetic valley is India’s granary, so falling groundwater directly threatens food security. In the north-western Indo-Gangetic belt, CGWB assessments put the stage of groundwater extraction above 150% in Punjab and about 136% in Haryana, against a national figure near 60%, and show many units in western UP as over-exploited or critical, with water tables falling by several metres and, in some units, 30-70 cm a year. This stresses the paddy-wheat monoculture that anchors MSP procurement concentrated in this belt. As water tables fall, deeper borewells and higher pumping costs raise cultivation costs, pushing up MSP and, ultimately, food prices and the subsidy bill. Lower yields and higher pumping costs squeeze smallholders first, causing income collapse, indebtedness and distress migration, which reduces rural demand and labour.

The eastern Gangetic plains show a different asymmetry: Bihar and Bengal have higher recharge potential but weaker irrigation infrastructure, so water stress is compounded by monsoon variability and by groundwater-fed boro (summer) rice; arsenic contamination of shallow aquifers adds a health risk. Declining millets and pulses cultivation weakens dietary diversification; NFSA entitlements can falter in drought-affected districts, exposing nutritional security.

Forward linkages amplify the risk. Thermal power plants and industries compete for the same depleted aquifers, while climate change, through reduced soil moisture, creates a positive feedback—drier soils give less evaporative cooling, raising temperatures and further drying the land.

A way forward is to curb paddy-wheat dependence, expand micro-irrigation and rainwater harvesting, recharge aquifers, diversify to millets/pulses, enforce stage-of-extraction norms, and align MSP, procurement and NFSA delivery with groundwater realities, strengthening crop insurance, soil-moisture monitoring and demand-side water pricing, and ensure timely foodgrain procurement in stressed districts to protect urban and rural diets.