Running Dry: Climate Change and Morocco's Water Future

Morocco is running out of water. This is not a projection for a distant future but a description of the present. The country's renewable water resources have declined from approximately 22 billion cubic meters per year in the 1960s to roughly 15 billion cubic meters today, a drop of over 30% in a single lifetime. Per capita water availability has plunged below the internationally recognized threshold of water scarcity. Reservoirs that were designed to buffer against dry years are emptying faster than they fill. Aquifers that took millennia to charge are being depleted in decades. And the forecasts point in only one direction: drier.

This is the story of Morocco's water crisis, the role of climate change in driving it, and the ambitious, sometimes desperate, measures the country is taking to secure its future.

The Numbers: A Nation Below the Scarcity Line

Water scarcity is measured in cubic meters of renewable freshwater available per person per year. The thresholds, established by the United Nations, are widely accepted.

• Above 1,700 m3/person/year: Water sufficiency.
• 1,000-1,700 m3/person/year: Water stress.
• 500-1,000 m3/person/year: Water scarcity.
• Below 500 m3/person/year: Absolute water scarcity.

Morocco's Trajectory

The decline is driven by two converging forces: a growing population that demands more water, and a changing climate that delivers less.

Climate Change: The Drying Trend

Morocco sits in one of the regions most affected by anthropogenic climate change. The Mediterranean basin, identified by the IPCC as a "climate change hotspot," is warming faster than the global average and drying at the same time.

Temperature Changes

Morocco's national average temperature has risen by approximately 1.2 C since the mid-20th century. This warming has several direct consequences for water availability.

• Increased evaporation: Higher temperatures accelerate evaporation from reservoirs, rivers, and soil surfaces. Morocco's major reservoirs lose an estimated 10 to 15% of their stored water to evaporation annually, a rate that is increasing with warming.
• Reduced snowpack: As temperatures rise, the snowline in the Atlas Mountains moves higher. Precipitation that would have fallen as snow, stored naturally until spring melt, instead falls as rain, running off immediately and contributing to flood risk rather than sustained water supply.
• Higher agricultural water demand: Crops transpire more water in higher temperatures, increasing irrigation requirements precisely when water is becoming scarcer.

Precipitation Changes

The precipitation picture is more complex than a simple decline.

• Total annual rainfall has decreased by approximately 10 to 15% since the 1960s across most of Morocco, with the sharpest declines in the southern and eastern regions.
• Seasonal distribution has shifted. The rainy season is starting later and ending earlier in many areas, reducing the effective period for agricultural water recharge.
• Intensity is increasing. When rain does fall, it tends to come in more intense bursts, causing runoff and flooding rather than gentle soaking that recharges groundwater. This "feast or famine" pattern means that less of each rainfall event is captured usefully.
• Variability has increased. The year-to-year swing in rainfall has widened, making water planning more difficult. A sequence of dry years (as experienced in 2020-2023) can push the system to its limits.

Climate Model Projections

Models project that by 2050, under a moderate emissions scenario:

• Annual rainfall across Morocco could decline by a further 10 to 20%.
• The number of drought years per decade could increase from 3-4 to 5-7.
• Summer temperatures will rise by an additional 2 C to 3 C, further increasing evaporation and crop water demand.
• The Atlas snowpack could decline by 30 to 50%, reducing the natural water storage that feeds summer river flows.

The Agricultural Impact: Morocco's Largest Water Consumer

Agriculture accounts for approximately 80 to 85% of Morocco's water consumption. The sector is the backbone of the rural economy, employing roughly 40% of the workforce and contributing 14% of GDP. It is also the most vulnerable to water scarcity.

Rain-Fed Agriculture

Approximately 80% of Morocco's cultivated land is rain-fed (bour), meaning it depends entirely on natural rainfall with no irrigation. These lands produce the bulk of the country's cereal crops: wheat, barley, and maize.

The impact of declining and more variable rainfall on rain-fed agriculture has been devastating.

• Cereal production has become wildly unpredictable. In a good rainfall year, Morocco can produce 10 million tonnes of cereals. In a drought year, production can plummet to 3 million tonnes or less. The 2022-2023 drought reduced cereal production to its lowest level in decades, forcing significant grain imports.
• Rural livelihoods are directly affected. Crop failures trigger rural-to-urban migration, exacerbating pressure on city infrastructure and water systems.
• Food security is increasingly dependent on import capacity and global grain markets, adding economic and geopolitical vulnerability.

Irrigated Agriculture

Morocco has invested heavily in irrigated agriculture, building over 140 large dams — including recent strategic additions like Tiddas Dam (507 Mm³, commissioned 2022) — and developing extensive canal networks. These systems have transformed regions like the Doukkala, Tadla, Souss-Massa, and Gharb into productive agricultural zones.

However, irrigated agriculture is facing its own water crisis.

• Dam storage has declined as sedimentation reduces reservoir capacity and lower rainfall reduces inflows. Several major dams have dropped below 30% capacity during recent droughts.
• Groundwater over-extraction has become a critical problem. Farmers, desperate for water during surface drought, drill ever-deeper wells. In the Souss-Massa region, groundwater levels have dropped by 2 to 3 meters per year for the past two decades. Some wells now reach 200 meters or more, a depth that makes pumping uneconomic for all but the highest-value crops.
• Water quality deteriorates as aquifers deplete. Saltwater intrusion affects coastal aquifers, and mineral concentration increases in over-pumped wells, reducing the water's suitability for irrigation.

The Crop Shift

Water scarcity is forcing a fundamental rethinking of what Morocco grows.

• Water-intensive crops like sugar cane, rice, and certain fruit trees are being phased out in favor of less thirsty alternatives.
• Drip irrigation has been promoted aggressively through the Plan Maroc Vert (Green Morocco Plan) and its successor, Generation Green. Drip systems use 30 to 50% less water than traditional flood irrigation.
• High-value, low-water crops like saffron, argan, and cactus fruit are being promoted as alternatives that can sustain rural incomes with less water.
• Olive trees, naturally drought-tolerant, are being expanded across semi-arid zones.

Urban Water Stress

Morocco's cities are also feeling the squeeze.

Domestic Water Supply

Urban water supply in Morocco is managed by public utilities (ONEE for smaller cities, regional utilities for larger ones). These utilities draw water from surface reservoirs, groundwater wells, and increasingly, desalination plants.

• Rationing: During the 2022-2023 drought, several Moroccan cities implemented water rationing measures, including reduced pressure during certain hours, restrictions on car washing and garden irrigation, and public awareness campaigns urging conservation.
• Intermittent supply: Some smaller cities and rural communities experienced intermittent water supply, with taps running dry for hours or days at a time.
• Water tankers: In the most affected rural areas, water was delivered by tanker trucks, an expensive and logistically challenging stopgap.

Growing Demand

Morocco's urban population continues to grow, driven by both natural increase and rural-to-urban migration. Cities like Marrakech, Agadir, and Tangier are expanding rapidly, and each new resident adds to water demand. Tourism, a major economic driver, also consumes significant water through hotels, swimming pools, and golf courses.

Morocco's Response: A Multi-Front Strategy

Morocco has recognized the severity of its water crisis and launched an ambitious response.

The National Water Plan

Morocco's National Water Plan (Plan National de l'Eau) sets out a comprehensive strategy for water security through 2050. Key elements include:

• New dam construction: Morocco plans to build additional large dams to increase storage capacity, aiming to maintain a buffer against multi-year droughts. However, rising sedimentation rates and declining rainfall raise questions about the long-term viability of dam-centric strategies.
• Inter-basin transfers: Plans to transfer water from relatively water-rich northern basins (the Loukkos and Sebou) to water-scarce southern basins (the Oum er-Rbia and Tensift) are being developed, though they face technical, economic, and environmental challenges.
• Groundwater management: New regulations aim to control groundwater extraction and close illegal wells. Enforcement remains a challenge, particularly in remote agricultural areas.

Desalination

Morocco is betting heavily on desalination to bridge its water gap.

• The Casablanca desalination plant: One of the largest in Africa, this facility is designed to produce up to 300 million cubic meters of freshwater per year, supplying drinking water to the Casablanca-Settat region.
• The Agadir plant: Already operational, this plant supplies a significant portion of Agadir's drinking water and has reduced pressure on the over-exploited Souss-Massa aquifer.
• Additional plants are planned for Safi, Dakhla, and other coastal cities.

Desalination is expensive, energy-intensive, and produces brine waste that must be managed. However, it is also reliable and independent of rainfall, making it an attractive option for a country facing increasing hydrological uncertainty.

Wastewater Reuse

Morocco is expanding its wastewater treatment and reuse capacity, aiming to treat and recycle municipal wastewater for agricultural irrigation and landscape watering. Several treatment plants are operational, and the regulatory framework for safe reuse is being developed.

Water-Use Efficiency

Improving efficiency is the most cost-effective strategy and is being pursued at every level.

• Agricultural efficiency: Expansion of drip irrigation, promotion of mulching and soil moisture conservation, and development of drought-resistant crop varieties.
• Urban efficiency: Investment in reducing leakage from aging water distribution networks, which can lose 30% or more of treated water before it reaches consumers.
• Pricing: Water pricing reforms aim to reflect the true cost and scarcity of water, discouraging waste while protecting access for low-income households.

Rainwater Harvesting

Traditional rainwater harvesting techniques, long practiced in rural Morocco, are being revived and modernized. Programs promote the construction of small dams, cisterns, and hillside terracing to capture and store rainfall at the local level, reducing dependence on large-scale infrastructure.

The Social and Political Dimension

Water scarcity is not just a technical problem. It is a social and political one.

Rural-Urban Migration

As agriculture becomes less viable in drought-prone areas, rural populations migrate to cities. This migration has accelerated in recent years, swelling the populations of Casablanca, Marrakech, Tangier, and Agadir. The migrants bring labor but also need water, housing, and services, creating a feedback loop that intensifies urban water stress.

Inequality

Water scarcity affects Moroccans unequally. Wealthy urban residents can afford bottled water, private wells, and water-efficient appliances. Poor rural communities may rely on a single communal well or spring that is drying up. Women and girls in some areas walk hours to fetch water, time that could otherwise be spent on education or economic activity.

Regional Tensions

Water allocation between regions, and between agricultural and urban users, is increasingly contentious. Upstream communities that control water sources sometimes resist transfers to downstream cities. Farmers and city dwellers compete for the same shrinking supply. Managing these tensions requires transparent governance, equitable allocation, and genuine stakeholder engagement.

What the Future Holds

Morocco's water future is not predetermined. The outcome depends on decisions made in the coming years.

The Optimistic Scenario

If Morocco successfully implements its National Water Plan, expands desalination, improves efficiency, and manages groundwater sustainably, it can maintain adequate water supply for its growing population and economy. The country's strong institutional capacity, willingness to invest, and access to international climate finance provide a foundation for success.

The Pessimistic Scenario

If climate change accelerates beyond current projections, if infrastructure investment lags, if groundwater depletion continues unchecked, and if governance challenges prevent effective implementation, Morocco could face severe water shortages that trigger food insecurity, economic disruption, and social instability.

The Likely Path

The reality will probably fall between these extremes. Morocco will manage its water crisis, but not without significant hardship, adaptation, and cost. The transition from a rain-dependent economy to one that diversifies its water sources and uses every drop efficiently is underway, but it is a generational project, not a quick fix.

Conclusion

Morocco's water crisis is the slow-motion emergency that defines the country's future. The decline from 22 billion to 15 billion cubic meters of renewable water, the depleting aquifers, the emptying reservoirs, and the failing rain-fed harvests are all symptoms of a deeper transformation driven by climate change and population growth. The solutions exist: desalination, efficiency, reuse, better governance. Whether they can be deployed at the speed and scale required is the defining question of Moroccan public policy in the 21st century. The clock is running, and the taps are slowing.