Multipurpose water resources development project on the transboundary Malaba River at the border between Kenya and Uganda in the Sio-Malaba-Malakisi (SMM) River Basin (Lake Victoria sub-basin). Features a 40-metre-high composite dam with 31.6 million cubic metre reservoir, a 1.3 MW mini-hydropower plant (with potential for an additional 20 MW via floating solar pontoons), a 4,000-hectare irrigation scheme (1,180 ha Kenya, 2,820 ha Uganda), water supply system for over 270,000 people, fisheries and aquaculture programme, and restoration of 30% of the degraded 447 km² watershed. Flood protection for downstream communities also included. The project was first identified in 2010 under the NELSAP SMM River Basin Management project, with feasibility studies, ESIA, resettlement plan, and detailed designs completed by July 2022 at a cost of USD 1.83 million.