To prevent control of urban runoff involves decreasing the velocity and the flow of stormwater, as well as reducing pollutants. Local government are using a variety of stormwater management techniques to reduce the effects of urban runoff. These techniques may be used to focus on water quantity control, and some others facilities are focus mainly on improving the quality of water resources. Some other techniques could be used includes low-impact development techniques, installation of green roofs and improved chemical handling (. Management of motor fuels and oil, fertilizers and pesticides). Infiltration basins, bioretention systems, constructed wetlands, retention basins are involved in runoff mitigation systems.