This lecture addresses the challenges of urban rainwater management in Sub-Saharan African cities, focusing on the increasing frequency of floods and the importance of controlling rainwater to prevent pollution and flooding. The instructor discusses the main issues related to rainwater management, the types of drainage systems used, constraints faced in their operation, and innovative solutions to improve rainwater management. The impact of urbanization on rainwater management is also explored, highlighting the need for coordinated efforts to address natural constraints, urban development challenges, and lack of proper planning. Various measures to enhance urban rainwater management, including alternative techniques and community involvement, are presented to mitigate the risks of flooding and erosion.