KWSCRP‑2 finances the Mwache multipurpose dam and associated raw water transmission to increase bulk water supply for Mombasa County and Kwale County, and expands access to water in drought‑vulnerable areas of Kwale. The project combines large-scale infrastructure (main dam, check dams, gravity conveyance, access roads/bridges, electromechanical and SCADA systems) with integrated catchment management and livelihoods around the Mwache watershed, and county‑level water supply, sanitation, and hygiene investments. The Additional Financing (AF) scales up the dam and related works, updates the results framework, and extends the closing date to complete construction and watershed/livelihood activities. Watershed work is implemented through Water Resources User Associations (WRUAs) and Sub‑Catchment Management Plans to reduce sedimentation and ecosystem degradation; AF funds focus on the dam itself (no new AF funding for NBS)