Protection of the city of Casablanca from the floods of Oued Bouskoura

Protection of the city of Casablanca from the floods of Oued Bouskoura

The project aims to equip the city of Casablanca with an underwater structure to canalize floodwater of Oued Bouskoura and to discharge it directly into the ocean. 

The project is composed of two distinct sections:

  • At the top of the road to El Jadida a stretch of road as an open channel totaling 3 km, with variable slopes and sections to best adapt to the natural morphology of the oued ;

  • From the road to El Jadida to its end at the ocean, a gallery as an underground tunnel and a backfilled tunnel of approximately 6.9 km and 5.5 m in diameter with a 140 m3/s flow.

The tunnel's excavation is realized by the Tunnel Boring Machine method (TBM ) with a coating made of concrete rings.

  • Contracting Authority  : Commune de Casablanca
  • Delegated Contracting Authority : Casablanca Aménagement SA
  • General State Budget : 128 million Dh ;
  • Fund for the Fight against Natural Catastrophes : 128 million Dh ;
  • Ministry of Interior : 159 million Dh ;
  • Ministry of Energy, Mines and the Environment: 75 million Dh ;
  • Ministry of Equipment, Transport, Logistics and Water: 5 million Dh ;
  • Municipality of Casablanca : 159 million Dh ;
  • Region of Casablanca - Settat : 106 million Dh ;
  • Groupe OCP SA : 80 million Dh ;
  • The Agency for Urbanization and Development of Anfa : 50 million  Dh ;
  • The Agency for the Hydraulic Reservoir of the Bouregreg and the Chaouia : 10 million Dh.
  • Underground tunnel: 6,9 Km / 5,5m Ø
  • Flow: 140 m3/s
  • Worked hours:1 700 000 H
  • Staff average: 200
  • Quantity of excavation: 400 000 m3
  • Steel Frame: 4 500 T
  • Quantity of backfill: 100 000 m3
  • Concrete: 65 000 m3 
  • Tunnel rings: 3 940 U
  • Tunnel segments: 23 640 U
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