Al Wahda
Largest dam in Morocco and second in Africa, protecting the Sebou basin from floods and irrigating the Gharb plains.
88 m
Height
3,522.3
Capacity (Mm³)
88%
Fill Rate
240
Hydroelectric (MW)
1997
Built In
About This Dam
Inaugurated on March 20, 1997 by King Hassan II, Al Wahda Dam (formerly M'Jaara) is the largest dam in Morocco and second in Africa. Built between 1991 and 1996 on the Ouergha River, this embankment structure required 28 million m³ of materials and 720,000 m³ of concrete. Equipped with 3 Francis turbines of 80 MW each, it produces 240 MW of hydroelectric energy. Its primary function is flood protection, reducing floods in the Gharb region by 90%, while irrigating over 110,000 hectares of farmland in the Gharb plains. The dam faces the challenge of siltation, losing approximately 60 million m³ of storage per year.
Largest dam in Morocco and second largest in Africa
Historical Fill Rates
Key Specifications
- Location: Tanger-Tétouan-Al Hoceima · Nearest City: Ouezzane
- River: Ouergha · Basin: Sebou
- Type: Embankment Dam · Height: 88 m
- Capacity: 3,522.3 Mm³ · Built In: 1997
- Hydroelectric: 240 MW
- Coordinates: 34.5980°N, 5.2000°W
Purpose
Flood Control
Protects downstream areas from flooding
Irrigation
Provides water for agricultural irrigation
Water Supply
Supplies drinking water to cities
Hydroelectric
Generates renewable hydroelectric power
Frequently Asked Questions
What is the capacity of Al Wahda Dam?
Al Wahda Dam has a total storage capacity of 3,522.3 million cubic meters (Mm³) and a height of 88 meters. It ranks among Morocco's strategic reservoirs and plays a key role in regional water security.
Where is Al Wahda Dam located?
Al Wahda Dam is located in the sebou river basin in Morocco. It is part of the national network of large dams managed by Morocco's hydraulic authorities.
When was Al Wahda Dam built?
Al Wahda Dam was commissioned in 1997. It forms part of Morocco's ongoing national dam-building program, which has expanded significantly since the 1960s.
What is the current water level at Al Wahda Dam?
As of the latest update, Al Wahda Dam holds 3,044 Mm³ out of a total capacity of 3,522.3 Mm³, representing a fill rate of 88%. Levels are updated regularly to track seasonal rainfall and water releases.
What is Al Wahda Dam used for?
Al Wahda Dam serves several purposes: supplying drinking water to nearby cities, irrigating agricultural land, regulating floods to protect downstream areas, and supporting regional water management.
Which river feeds Al Wahda Dam?
Al Wahda Dam is built on the Ouergha River. The dam captures the river's flow to store water for drinking, irrigation, and flood control.
Current Level
FullCapacity
3,100
Mm³
Remaining
422.3
Mm³
Fill Rate
88%
Updated · July 2026
Geography
- Region
- Tanger-Tétouan-Al Hoceima
- Nearest City
- Ouezzane· 41 km
- Coordinates
- 34.598, -5.200
Idriss 1er
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FullCapacity
1,129.6
Height
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Built In
1973
Allal El Fassi
Allal El Fassi Dam is primarily dedicated to hydroelectric production. Located on the Sebou River, it is part of the Sebou basin hydraulic complex and significantly contributes to the country's renewable energy production.
FullCapacity
63.7
Height
62m
Built In
1991
El Kansera
El Kansera Dam is Morocco's oldest irrigation dam. Built in 1935 on the Beht River, it irrigates the fertile plains of the Gharb and stands as a testament to the country's hydraulic history.
FullCapacity
216.4
Height
51m
Built In
1935