80% of people in Latin America and the Caribbean live in cities, and the number is growing. Cities rely on healthy ecosystems to function and for the well-being of the population. However, rapid and often uncoordinated urbanization is degrading the natural ecosystems in urban and peri-urban areas across the region. Climate change adds additional pressure, increasing the risks of extreme weather events and compounding the vulnerabilities of communities. Ecosystem-based adaptation (EbA) - using nature to help people adapt to climate change - can strengthen the resilience of ecosystems and local communities. This case study shares the lessons learned through the CityAdapt project on adopting a watershed approach to ecosystem-based urban adaptation planning.