Urban runoff is surface runoff of rainwater, landscape irrigation, and car washing[1] created by urbanization. Impervious surfaces (roads, parking lots and sidewalks) are constructed during land development. During rain, storms, and other precipitation events, these surfaces (built from materials such as asphalt and concrete), along with rooftops, carry polluted stormwater to storm drains, instead of allowing the water to percolate through soil.[2] This causes lowering of the water table (because groundwater recharge is lessened) and flooding since the amount of water that remains on the surface is greater.[3][4] Most municipal storm sewer systems discharge untreated stormwater to streams, rivers, and bays. This excess water can also make its way into people's properties through basement backups and seepage through building wall and floors.
Urban runoff can be a major source of urban flooding and water pollution in urban communities worldwide.
^"Impact of Water Runoff from Streets and Yards". Highlands Ranch, CO: Highlands Ranch Metro District. Retrieved 30 August 2021.
^"Runoff (surface water runoff)". USGS Water Science School. Reston, VA: U.S. Geological Survey (USGS). 2018-06-06.
^Water Environment Federation, Alexandria, VA; and American Society of Civil Engineers, Reston, VA. "Urban Runoff Quality Management." WEF Manual of Practice No. 23; ASCE Manual and Report on Engineering Practice No. 87. 1998. ISBN 1-57278-039-8. Chapter 1.
^Schueler, Thomas R. (2000) [initial publ. 1995]. "The Importance of Imperviousness". In Schueler; Holland, Heather K. (eds.). The Practice of Watershed Protection. Ellicott City, MD: Center for Watershed Protection. pp. 1–12. Archived from the original (pdf) on 2014-03-27. Retrieved 2014-12-24.
Urbanrunoff is surface runoff of rainwater, landscape irrigation, and car washing created by urbanization. Impervious surfaces (roads, parking lots and...
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to channel runoff (or...
The Nationwide UrbanRunoff Program (NURP) was a research project conducted by the United States Environmental Protection Agency (EPA) between 1979 and...
of water as a coolant by power plants and industrial manufacturers. Urbanrunoff—stormwater discharged to surface waters from rooftops, roads, and parking...
sewage discharges, industrial activities, agricultural activities, and urbanrunoff including stormwater. Water pollution may affect either surface water...
boating activities. In urban areas, contaminated storm water washed off of parking lots, roads and highways, called urbanrunoff, is usually included under...
pollution). In addition to the pollutants carried in stormwater runoff, urbanrunoff is being recognized as a cause of pollution in its own right Stormwater...
retention basins, by capturing large sediments and street litter from urbanrunoff before it enters the storm drainage pipes. Pipes can come in many different...
The 1972 law did not address surface runoff from farms or urbanrunoff pollution. Municipal stormwater runoff became subject to regulation in 1987, although...
reduce the flow rate, total quantity, and pollutant load of runoff from impervious urban areas like roofs, driveways, walkways, parking lots, and compacted...
particularly surface runoff and water pollution trends. SuDS have become popular in recent decades as understanding of how urban development affects natural...
waste and contaminants into surface runoff flowing to surface waters (including urbanrunoff and agricultural runoff, which may contain chemical fertilizers...
other sources, can no longer sufficiently rapidly infiltrate the soil. Urbanrunoff, including water used for outdoor cleaning activity and landscape irrigation...
Faster than Other Urban Areas". Archived from the original on 20 October 2019. Retrieved 31 July 2008. "Runoff (surface water runoff)". USGS Water Science...
environmental laws. Sources of these pollutants include agriculture, urbanrunoff and ordinary household products (such as soaps and disinfectants) and...
Surface runoff, when water runs off impervious surfaces, such as non-porous concrete, can cause severe soil erosion and flooding. Urbanrunoff tends to...
Primary sources for TDS in receiving waters are agricultural runoff and residential (urban) runoff, clay-rich mountain waters, leaching of soil contamination...
system of pipes, tunnels, pump stations etc. to transport sewage and urbanrunoff together to a sewage treatment plant or disposal site. This means that...
Urban streams are often polluted by urbanrunoff and combined sewer outflows. Water scarcity makes flow management in the rehabilitation of urban streams...
controlling pollution from confined animal operations and from surface runoff that may be contaminated by chemicals in fertilizer, pesticides, animal...
the remainder of the storm. Consequently, these high concentrations of urbanrunoff result in high levels of pollutants discharged from storm sewers to surface...
typically much smaller in diameter than combined sewers which also transport urbanrunoff. Backups of raw sewage can occur if excessive stormwater inflow or groundwater...
tanks Sewage Shipping Sludge Stagnation Sulfur water Surface runoff Turbidity Urbanrunoff Water quality Wastewater Topics History Pollutants Heavy metals...
process of directing water into storage from stormwater gathering, such as urbanrunoff. Generally, there are two types, online storages and offline storages...
tanks Sewage Shipping Sludge Stagnation Sulfur water Surface runoff Turbidity Urbanrunoff Water quality Wastewater Topics History Pollutants Heavy metals...
plant. For cities that have a combined sewer, the sewers will also carry urbanrunoff (stormwater) to the sewage treatment plant. Sewage treatment often involves...
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