The project is part of the integrated water resources management process of the multiannual water and sanitation program. It covers the whole 52,513 km² of the Ouémé Basin, including the Donga, Borgou, Zou, Hills, Ouémé and Atlantic departments. The beneficiary population total 6 million inhabitants. One of the aspects of the project is the mobilization and development of water resources through the construction of 3 hydroelectric dams for multiple purposes and 27 secondary dams.