EWS and the use of mapping tools as undertaken in La Paz proved to be an effective adaptation measure in the face of increasing hydro-climatic extreme events (Aparicio-Effen et al., 2018).12.5.5.3.2 Green and Grey Infrastructure Hybrid solutions, combining green and grey infrastructure (GGI), have been adopted for better efficiency in flood control (Ahmed et al., 2019; Drosou et al., 2019; Romero-Duque et al., 2020), sanitation, water scarcity, landslide prevention and coastal protection