Increases in the frequency and intensity of precipitation will only increase the risks and costs associated with stormwater management. Green infrastructure is a method of stormwater management to divert and reduce runoff, often by replacing impervious surfaces with natural soils and vegetation. Rainwater harvesting, permeable pavements, green roofs, urban tree canopies, rain gardens and bioswales and wetland restoration divert and filter stormwater locally, helping to prevent flooding and pollution.