5.13 Methods to Reduce Urban Runoff

environmental consequences of runoff

low infiltration and pollutants flowing into storm drains

effect of pollutants: salt

death of plants and animals

effect of pollutants: sediment

turbidity

effect of pollutants: fertilizer

eutrophication

effect of pollutants: pesticides

kills non-target species

effect of pollutants: oil & gas

kills aquatic species

solution - permeable pavements

allows stormwater to infiltrate, recharges groundwater. decreases runoff of pollutants and lowers the chance of flooding

solution - rain gardens

gardens in urban centers that decrease runoff by allowing water to soak in soil, which lowers chance of flooding. provides habitat for pollinators and stores carbon

solution - public transit

decreases urban runoff, pollutants on the road, carbon emissions, and traffic

solution - building vertically

building up decreases impervious surfaces, and green roofs sequester carbon. this can filter air pollutants