Tenders Are Invited For Supervision And Monitoring Of Hydro-Agricultural Development Works In The Lowlands Of The Six Nodal Poles Of Kongo Central: Tshela, Lukula, Boma, Kimpese, Mbanza Ngungu, And Inkisi, Kongo Central Province

Expression of Interest for Supervision and Monitoring of Hydro-Agricultural Development Works in the Lowlands of the Six Nodal Poles of Kongo Central: Tshela, Lukula, Boma, Kimpese, Mbanza Ngungu, and Inkisi, Kongo Central Province The works are divided into three lots: Lot 1: Rehabilitation and reconstruction of existing irrigated schemes covering 870 hectares with full water control in the nodal poles of Inkisi/Madimba, Mbanza Ngungu, and Kimpese, divided into three sub-lots (one per nodal pole), comprising 17 irrigation schemes. Lot 2: Rehabilitation and reconstruction of existing irrigated schemes covering 230 hectares with full water control in Boma, Lukula, and Tshela, divided into three sub-lots (one per nodal pole), comprising 10 irrigation schemes. Lot 3: Construction of 13.7 km of access roads and storage areas in Inkisi/Madimba. The proposed developments are based on the following principles: Sustainable irrigation systems providing full water control for both irrigation during the dry season and drainage during the rainy season. Agricultural development focused mainly on two annual cycles of irrigated rice cultivation, followed by vegetable and legume production. Gravity-fed irrigation using water diverted from nearby rivers. Irrigation schemes consisting of gravity-fed open canal networks, including concrete-lined trapezoidal primary and secondary canals and earthen tertiary canals. Each irrigation scheme will include a primary canal connected to the river through a diversion weir and intake structure, supplying secondary canals, which in turn feed tertiary canals. The tertiary canal is the final link in the irrigation network and supplies water directly to agricultural plots. Water distribution may operate either by rotation or on demand, depending on irrigation requirements. The regulation system will adjust network flow according to the number of tertiary canals operating simultaneously. At peak demand, all tertiary canals may operate simultaneously, with the network head delivering the combined flow required. Each tertiary canal serves an Autonomous Irrigation Unit (AIU) consisting of one or more agricultural plots allocated to beneficiary farmers. Each plot will have a net area of 0.5 hectares (0.55 hectares gross). Irrigation flow rates will range from 20 to 40 liters per second, depending on the size of the irrigation block and water requirements. The assignment will be carried out in Kongo Central Province over a period of 14 months, comprising: 1 month before the start of construction, 12 months during construction, and 1 month after completion of construction. [Disclaimer: The above text is machine translated. For accurate information kindly refer the original document.] Tender Link : https://www.afdb.org/en/projects-and-operations/procurement