Planning Resilient Cities: A Methodological Framework for the Integration of Nature-Based Solutions

Climate change arguably constitutes the most significant environmental challenge of our time, making the enhancement of urban resilience a global priority. Nature-based Solutions (NbS) have emerged as effective instruments to mitigate some of its impacts, particularly by reducing flood risk and moderating urban temperatures. However, their implementation is often reactive, focusing on existing problems rather than anticipating future ones. This underscores the need for robust methodological frameworks that enable the proactive integration of NbS within urban planning processes. This study proposes a spatial planning methodology supported by Geographic Information Systems (GIS), which, through the application of opportunity, priority, and feasibility criteria, identifies optimal areas for NbS integration, determines appropriate typologies, and establishes levels of intervention urgency. Although the methodology has been developed for the city of Granada, its structure allows for replication in other urban contexts. The findings reveal that one-third of Granada’s urban area is suitable for NbS implementation, with approximately 7% exhibiting a high or very high risk of surface runoff accumulation. The proposed tool has the potential to strengthen urban resilience and enhance citizens’ quality of life.