Dépliant : Senegal River Development Organization 20th Anniversary 1972 - 1992

Objectives The Manantali dam has been designed as a hydro-electric and regulation dam allowing, inter alia, for : • The irrigation of sorne 225,000 ha of lands in the valley at the normal 208 m IGN elevation. • Year-round navigability in the Senegal river from St-Louis ta Kayes. • The generation of hydro-electric power with a guaranteed output of 800 GWH/year . Specifications The dam consists of a 482.8 m long central concrete part housing all the surface hydraulic structures and of two lateral rockfill dykes. It is 65 m high above foundations and includes : • eight 9 m wide bays equipped with radial gates, • seven 3.8 m x 4.8 m penstocks equipped with radial gates. • five 14 m x 15.4 intake structures located in the upstream side and prolonged by five 4.8 diameter conduits. Financing Costs incurred under the dam construction works amounted ta CFA Fans equivalent 150 billion financed by Saudi Arabia (Saudi Fund), Kuwait (Kuwait Fund), Abu Dhabi (Abu Dhabi Fund), the OPEC Fund, the Islamic Development Bank (IDB), Italy, the Commission of the European Communitie s (CEC), the ADB Group, Canada, USAID and the UNDP. 3. THE RIGHT BANK DYKE It is located on the right bank in Mauritania territory. Cons– truction works under the first bid package were initiated in November 1988 and completed on 15 April 1992. These works have been carried out by a consortium of Enterprises grouping Razel, Foug erolles Intern ation al and SOMACOTP. Supervision there of has been ensured by the consortium of Coyne & Bellier Consulting Engineers. Construction works under the second bid package are scheduled to start shortly thanks ta an ADB group financing. Specifications: The right Bank Dyke is 76 km long. It is located between the upstream end of the Tound Birette and the MPOURIE chinese dyke in the Islamic Republic of Mauritania.