Mansour Eddahbi
Keystone of the Draa Valley, also supplying the Noor Ouarzazate Solar Complex.
70 m
Height
445.5
Capacity (Mm³)
40%
Fill Rate
10
Hydroelectric (MW)
1972
Built In
About This Dam
Built between 1971 and 1972 as part of King Hassan II's 'one million hectares' strategy, Mansour Eddahbi is a 70 m concrete gravity dam on the Draa River near Ouarzazate. Named after the Saadian Sultan Ahmed el-Mansour, it is the keystone of the Draa Valley, one of North Africa's longest, feeding downstream oases and palm groves. It also supplies 2.5-3 million m³ of water annually to the Noor Ouarzazate Solar Complex, the world's largest concentrated solar power plant, located 12 km away. The dam faces severe siltation, with capacity reduced from 529 to 439 million m³.
Largest dam in southern Morocco
Historical Fill Rates
Key Specifications
- Location: Drâa-Tafilalet · Nearest City: Ouarzazate
- River: Draa · Basin: Draa
- Type: Concrete Gravity Dam · Height: 70 m
- Capacity: 445.5 Mm³ · Built In: 1972
- Hydroelectric: 10 MW
- Coordinates: 30.9120°N, 6.7600°W
Purpose
Irrigation
Provides water for agricultural irrigation
Hydroelectric
Generates renewable hydroelectric power
Flood Control
Protects downstream areas from flooding
Frequently Asked Questions
What is the capacity of Mansour Eddahbi Dam?
Mansour Eddahbi Dam has a total storage capacity of 445.5 million cubic meters (Mm³) and a height of 70 meters. It ranks among Morocco's strategic reservoirs and plays a key role in regional water security.
Where is Mansour Eddahbi Dam located?
Mansour Eddahbi Dam is located in the draa river basin in Morocco. It is part of the national network of large dams managed by Morocco's hydraulic authorities.
When was Mansour Eddahbi Dam built?
Mansour Eddahbi Dam was commissioned in 1972. 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 Mansour Eddahbi Dam?
As of the latest update, Mansour Eddahbi Dam holds 178.2 Mm³ out of a total capacity of 445.5 Mm³, representing a fill rate of 40%. Levels are updated regularly to track seasonal rainfall and water releases.
What is Mansour Eddahbi Dam used for?
Mansour Eddahbi 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 Mansour Eddahbi Dam?
Mansour Eddahbi Dam is built on the Draa River. The dam captures the river's flow to store water for drinking, irrigation, and flood control.
Current Level
ModerateCapacity
178
Mm³
Remaining
267.5
Mm³
Fill Rate
40%
Updated · July 2026
Geography
- Region
- Drâa-Tafilalet
- Nearest City
- Ouarzazate· 13 km
- Coordinates
- 30.912, -6.760
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Height
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Built In
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Height
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Built In
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LowCapacity
280.2
Height
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Built In
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