Green Infrastructure Tool Kit. Broadly called “green infrastructure,” this new set of strategies seeks to manage stormwater, reduce urban heat island effects, improve air quality, and promote economic development and other sustainability goals. Green infrastructure provides an attractive alternative to traditional concrete (or “gray”) infrastructure by making paved and hard surfaces vegetated or permeable.
How tree planting, rain gardens, swales and permeable pavements not only control pollution but also help cool urban heat islands, mitigate flooding, recharge groundwater, beautify neighborhoods and enhance nearby property values.
Urban Heat Island: a metropolitan area that is significantly warmer than its surrounding rural areas due to human activities; forms as the sun's energy is absorbed by urban structures and concrete; during the night, this heat energy is slowly released into the city air