Diagnostic Of Urban Flooding In Nairobi: Report 2024
University of Twente
Download
Abstract: This report examines flood exposure in Nairobi using FastFlood spatial simulations, community mapping, and citizen-generated data. It identifies 27% of city territory and 35% of built-up areas as highly flood-prone, with informal settlements like Mathare, Kibera, and Korogocho disproportionately affected. It evaluates structural drivers including riparian encroachment, poor drainage, and unplanned development. The study applies participatory GIS techniques and validates outputs through stakeholder workshops. Impacts on schools, clinics, housing, and mobility networks are documented using local accounts and satellite overlays. Recommendations focus on integrating localized flood models into city planning and enhancing community training for risk adaptation. The report emphasizes inclusive mapping, open data platforms, and technical support for informal settlement upgrading.