Many cities are implementing adaptation measures on integrated water and flood management systems , improving basic sanitation services . The main strategies are established by NAPs periodically focusing on improving water distribution network and reservoir systems, as in Honduras  and Ecuador , sewage and effluent treatment, as in Guatemala, Brazil and Paraguay , facing water scarcity and environmental degradation. Local authorities follow this guideline in an effort to maintain and upgrade existing drainage systems in Georgetown  or in Medellin, focusing on improving drainage systems to prevent landslides or flooding . Rio de Janeiro has constructed three large stormwater detention reservoirs to deal with frequent flood, , adopting a set of exclusively grey solutions, not combined into a NbS that could improve urban flood resilience . The main proposed actions still consider the traditional approach in improving the hydraulic capacity of urban drainage systems as an adaptive measure  . In addition to this strategy, several local plans propose actions for the retention and storage of rainwater, both in urban drainage networks on a smaller intervention scale  and along rivers and canals with large- scale works  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report