Monsoon rains offer a crucial, but overlooked, opportunity to replenish water reserves. How India manages its seasonal floods today will determine whether its communities face devastating droughts in the coming summer months.
Every summer, groundwater issues make headlines due to wells drying up and water shortages in cities. But by the time this crisis emerges, the opportunity to stop it is already gone.
The first monsoon rains have once again transformed India’s landscape. Rivers are overflowing, reservoirs are filling, and floodwaters are displacing families and submerging farmland in many parts of the country. As attention shifts from drought to floods, a crucial aspect of India’s water security is quietly disappearing from public discussion: groundwater.
The silent pillar of India’s water security
Nearly two-thirds of India’s irrigated agricultural land is irrigated by groundwater, and about 85% of rural domestic water needs are met by groundwater. For most Indians, groundwater becomes a topic of discussion only when it begins to run out. During the peak summer months, images of dry borewells, long queues for tankers, and falling water levels are prevalent. Once the rains begin, it is assumed that the crisis has been resolved.
Hydrologists say this perception is misleading. The monsoon is not the end of India’s groundwater crisis, but rather the beginning. Decisions made during these few months determine whether water reserves will fill sufficiently to provide drinking water, irrigation, and ecosystem support during the long dry season ahead.
Climate extremes and the recharge paradox
This distinction is becoming even more important as climate change is altering India’s rainfall patterns. Instead of weeks of continuous rain, many regions now experience short bursts of intense rainfall, interspersed with long periods of drought. While total seasonal rainfall may remain close to average, its ability to recharge groundwater is becoming ever more uncertain.
The impact of climate change on groundwater recharge in India is not yet fully understood, and the situation varies across the country. Research shows that groundwater recharge depends not only on the amount of rainfall, but also on the intensity of rainfall. A national-level study found that in alluvial aquifers in northern and north-central India, recharge is primarily driven by light, low-intensity monsoon rainfall, which has been decreasing in recent decades. In contrast, hard rock aquifers in southern India depend on more intense rainfall, which has become more frequent in many areas.
As a result, climate change is unlikely to have a uniform impact on groundwater. Some areas may experience a decline in groundwater recharge, while others may see improvements depending on changes in local rainfall patterns. However, in both cases, demand for groundwater is expected to increase as climate change puts pressure on agriculture and water supplies, making sustainable groundwater management more important than ever. “In Gajewas village in Punjab, the decline in water levels is measured by the number of borewells,” says farmer Lakhwinder Singh. “I have dug a well three times in the last fifteen years, and each time it is deeper than the previous one.”
The result is a growing gap between seasonal rainfall and groundwater availability. This contradiction is clearly visible in many parts of India. Districts that receive above-normal rainfall are experiencing a steady decline in groundwater levels, while areas that have invested in watershed restoration, recharge structures, and improved water management have shown greater resilience even in the face of variable rainfall.