Umme Haniya
“By 2025, Pakistan will run dry.” That dramatic slogan went viral in 2018. Critics dismissed it as fear-mongering by “dam lobbies.” They claim Pakistan doesn’t need mega-dams, pointing instead to aquifers, wetlands and “nature-based solutions.” But here’s the hard truth: Pakistan’s water crisis is not a campaign slogan – it is an existential reality. And without large reservoirs, the country’s survival is on the line.
Some analysists often cites the figure of 500 million acre-feet (MAF) of water stored in Pakistan’s aquifers. It sounds like a magic reservoir under our feet. But research shows otherwise: Pakistan pumps 50-55 MAF of groundwater annually, far more than nature replenishes each year. Over-extraction has already led to falling water tables, salinity and arsenic contamination in Punjab and Sindh. The 500 MAF is not a renewable resource, it is an accumulated stock, like a savings account being drained faster than deposits are made. At current drawdown rates, it would vanish in less than a decade.
The figure represents the theoretical storage capacity rather than practically usable reserves. A significant portion of this volume is either saline, brackish or located at depths too costly to exploit, limiting the share of freshwater to perhaps one-quarter of the total. At the same time, quality concerns – arsenic, nitrates and salinity – undermine water security, making large parts of the aquifer unsuitable for agriculture or domestic use without treatment. Aquifers are vital, but they cannot replace surface storage. In fact, properly designed reservoirs help recharge aquifers. Without dams, groundwater will collapse under relentless overuse and cannot be treated as a limitless reserve.
Pakistan’s rivers are fed by monsoon rains and Himalayan glaciers, both highly seasonal. Nearly 80% of river flow comes in just three months. Yet Pakistan has only about 30 days of water storage capacity. By contrast, India stores for 120 – 220 days, while the US holds nearly 900 days. Without reservoirs, Pakistan simply cannot regulate supply for the other nine months of the year. The result is a cycle of deadly floods followed by crippling droughts, a cycle that will only worsen with climate change.
Opponents argue that dams “silt up within a generation.” Yes, sedimentation is a real challenge, but not a death sentence. Tarbela and Mangla, Pakistan’s largest reservoirs, have already had their lifespan extended through sediment flushing, watershed management and dredging. Globally, Japan, China and the US have invested in bypass tunnels and catchment strategies to maintain reservoirs for centuries. Abandoning dams because of silt is like abandoning roads because of potholes. It is fashionable to argue that “dams don’t stop floods.” True – no single dam can prevent a once-in-a-century deluge. But dismissing dams ignores their role in reducing frequency, scale and impact of moderate floods. Without them, downstream populations – far denser in Pakistan than in Europe – would face constant devastation. “Room for the River” models in the Netherlands work only because of strict land-use enforcement. Pakistan lacks that governance capacity; millions live directly in floodplains. To argue otherwise is naïve. It is easy to dismiss dams as products of “contractor lobbies.” Yet the alternative investments some analysts champion, such as land relocation or watershed projects, also involve contracts and funds. The question is not whether money is spent, but whether it is spent strategically. For Pakistan, where monsoons dump most of the year’s water in just a few weeks, large reservoirs are not a luxury, they are a survival imperative.
Beyond water, dams generate hydropower – clean, indigenous and reliable. Pakistan’s dependence on imported oil and LNG is a fiscal noose. Solar and wind are crucial, but they are intermittent. Batteries are still too costly at scale. Hydropower provides base-load stability to anchor the transition. The World Bank notes that without strategic hydropower reservoirs, Pakistan’s grid will remain unstable and costly.
This debate is too often framed as “concrete versus nature.” That is false. The real solution is integration: Dams for storage, regulation, energy and aquifer recharge.
Aquifers for resilience and drought buffers.
Wetlands and floodplains for ecological health and disaster cushioning.
Efficiency measures like drip irrigation and rainwater harvesting to reduce demand.
Rejecting dams outright, as some argue, is not bold environmentalism, it is reckless disregard for Pakistan’s scale of need.
Nature-based solutions such as wetlands, floodplains and recharge systems are essential, but they cannot replace reservoirs at Pakistan’s scale. It is not a binary choice of “dams OR aquifers.” Pakistan needs dams AND aquifers AND wetlands. Dams provide strategic reserves, aquifers support local resilience and wetlands maintain ecological balance. Together, they form a layered security system. The debate is no longer “should Pakistan build dams?” The debate is which dams, where and under what safeguards? Pakistan must build, but build wisely. With transparent governance, modern engineering, environmental safeguards and fair compensation for displaced communities. The choice is clear: With dams, Pakistan has a fighting chance at water and energy security. Without them, it faces collapse.
