While land use and buildings are critical components of sustainable development, there are a number of other measures that can be employed in order to reduce the impact of development on the surrounding environment. Many of these measures are categorized under the term "Low-Impact Design" (LID), which seeks to minimize stormwater runoff from a given site. LID projects include green roofs, rain gardens, rain barrels, downspout disconnections, permeable pavement, native plant landscaping and a host of other innovative ideas that combine to stop pollution from reaching our rivers and streams.