Morocco dams reach 66.3% fill rate, double last year's level
Morocco's dams are 66.3% full, up from 31.5% a year ago, with a stock of 11.2 billion m³, though the recovery remains uneven between basins.
Morocco's dams reached a fill rate of 66.3% of their total capacity on Monday, 26 October 2026, compared with just 31.5% on the same date last year, a gain of about 34.8 percentage points, according to official data on the Kingdom's water resources. The current water stock stands at 11.2 billion m³, up roughly 113% from the same period in 2025, a direct result of the heavy rainfall recorded this agricultural season.
A sharp gap between river basins
Fill rates vary widely across the Kingdom's nine main river basins: northern basins post the best results, while southern and south-eastern basins remain the furthest behind:
| River basin | Fill rate | Stored volume |
|---|---|---|
| Bouregreg | 77.3% | 1.14 billion m³ |
| Sebou | 75.6% | 4.06 billion m³ |
| Tensift | 74.2% | 150.7 million m³ |
| Loukkos | 73.6% | 1.44 billion m³ |
| Moulouya | 72.6% | 509.4 million m³ |
| Oum Er-Rbia | 58.9% | about 2.95 billion m³ |
| Guir-Ziz-Gheris | 56.3% | 309.1 million m³ |
| Souss-Massa | 46.8% | 338.2 million m³ |
| Drâa-Oued Noun | 38% | 398.6 million m³ |
Al Wahda leads, the south still lags
In the Sebou basin, the Al Wahda dam, the largest in Morocco and in Africa, is 78% full (about 2.7 billion m³), while the Al Massira dam in the Oum Er-Rbia basin, the Kingdom's second-largest, stands at just 40% (over 1.08 billion m³). The Drâa-Oued Noun basin remains the hardest hit, with the country's lowest fill rate at 38%: the Toudgha dam does not exceed 9%, against 41% for the Kadoussa dam.
What this means for Moroccans
The improvement provides a wider safety margin for securing drinking water and meeting agricultural needs in the coming months, in a country that has endured several consecutive years of drought affecting groundwater, agriculture and the national economy. The same data, however, confirm that the recovery remains uneven, particularly in the southern and south-eastern regions, underscoring the need to keep pursuing water-saving policies and to speed up desalination and inter-basin water transfer projects.