In Australia’s Murray–Darling Basin, the crisis was not simply that water was running short. Decades of development had created patterns of extraction that the river system could no longer sustain without serious ecological and economic consequences. Australia’s response was politically difficult, expensive and remains contested. But it offers Pakistan an important lesson: a federation can preserve the responsibilities of its constituent governments while establishing common rules for the sustainability of a shared water system.
Pakistan’s 1991 Water Apportionment Accord is a foundational political settlement. It allocates the Indus waters among the provinces and provides the basis for their respective entitlements. Its importance should not be underestimated in a federation where water is inseparable from questions of trust, identity and economic development. But an allocation agreement is not, by itself, a complete system of water governance. It tells us how the river is divided. It does not automatically tell us whether total use is sustainable, how groundwater depletion should be controlled, or how environmental requirements should be incorporated. That is where the Murray–Darling experience becomes useful.
Australia’s Basin Plan established basin-wide sustainability requirements while states retained substantial responsibility for planning, licensing and implementation. The lesson for Pakistan is not to create a central authority that takes over provincial irrigation departments. It is to establish common obligations that allow the federation’s water system to be governed as one connected resource. The Accord should remain the allocation settlement. Sustainability must become the next layer of governance. Australia’s most important conceptual move was to ask a question that allocation arrangements alone could not answer: how much water can be taken from the system while maintaining its long-term health?
Pakistan’s next generation of water reform should therefore distinguish three questions: who is entitled to water, how scarcity is operated, and whether total use is sustainable.
Its sustainable diversion framework applies to surface water and groundwater, recognising that the two are often physically connected. Pakistan needs the same conceptual shift. This is particularly important in Punjab, where the canal system and aquifer function as one water economy. Canal seepage contributes to recharge. Tubewells supplement surface supplies when canal deliveries are inadequate. Groundwater has become a strategic buffer for agriculture, cities and industry.
Yet the aquifer is too often treated as available simply because water can still be pumped from it. Our Lake Mead is underground. Unlike a surface reservoir, its depletion is not visible through a falling waterline. It occurs across thousands of fields and settlements through a dispersed network of tubewells, with inadequate measurement and regulation still far behind the scale of abstraction. Solarisation adds urgency. By reducing the marginal cost of pumping once equipment is installed, solar power can improve farmers’ economics while also encouraging additional abstraction from stressed aquifers.
The answer is not to oppose solar energy. It is to govern the groundwater being pumped. Punjab should establish aquifer-level water accounts and groundwater stress zones, with progressively stronger requirements for monitoring, registration and new high-capacity abstraction. In critical areas, major groundwater-dependent housing and industrial developments should be required to demonstrate a sustainable water source before approval. Do not approve the development and then ask where its water will come from. These principles are not exclusive to Punjab. Balochistan and parts of KP also face serious aquifer depletion, although their hydrological conditions and drivers differ. The objective should not be a single national groundwater quota, but common sustainability principles implemented through provincial institutions.
The Murray–Darling experience also shows why environmental water cannot remain an afterthought. Australia’s reforms made ecological requirements an explicit part of basin management rather than leaving rivers, wetlands and floodplains to survive on whatever water remained after other uses. Pakistan should not copy Australian recovery volumes or purchase programmes. But the unresolved question of flows below Kotri illustrates the need for agreed scientific requirements, operational rules and monitoring. Environmental needs should be addressed explicitly within the constitutional and interprovincial framework.
Sustainability also requires better accounting of what water use actually consumes. Australia’s experience with water recovery and irrigation efficiency shows that engineering savings do not always equal basin-scale water savings. Pakistan should apply the same caution. Drip irrigation, watercourse improvement and canal lining may be valuable, but reducing diversion is not necessarily the same as reducing consumption. Saved water may be used to expand acreage, while seepage that appears to be a loss may recharge groundwater and be pumped again elsewhere. The relevant question is how much net depletion an intervention actually avoids.
Punjab should establish aquifer-level water accounts and groundwater stress zones, with progressively stronger requirements for monitoring, registration and new high-capacity abstraction.
Punjab should therefore pilot voluntary conservation contracts in severely stressed groundwater areas. Farmer organisations could be compensated for verified reductions in aquifer depletion through crop switching, reduced pumping, deficit irrigation or temporary fallowing. Satellite-based estimates, sample metering and groundwater monitoring can help verify outcomes. Pay for depletion avoided, not equipment installed.
None of this means Australia has solved its water problems. Its reforms have faced resistance from irrigation communities, disputes over environmental recovery, implementation delays and concerns about water-market governance. The lesson is not that a technically designed plan eliminates politics. It is that institutions must make trade-offs, resource conditions and compliance visible enough for politics to operate on a shared factual foundation. Pakistan should also be selective about what it borrows. Australian water markets, entitlement purchases and particular federal powers emerged from a different legal and institutional history. We should not turn provincial Accord allocations into tradable commodities or create permanent private groundwater rights that could entrench today’s over-abstraction.
The Murray–Darling Basin is not a model to copy. It is evidence that a river can be allocated long before it is sustainably governed. Pakistan’s next generation of water reform should therefore distinguish three questions: who is entitled to water, how scarcity is operated, and whether total use is sustainable. The Accord answers the first. Better federal operating rules can address the second. The third requires a coherent sustainability framework linking surface water, groundwater, environmental needs and credible accounting. We divided the river in 1991. Now we must learn to govern the water system that allocation created.