Urbanization and Stormwater Runoff - US EPA
2024年2月7日 · Stormwater runoff is generated from rain and snowmelt that flows over land and does not soak into the ground. Runoff can pick up and deposit harmful pollutants into streams, lakes, and groundwater.
What is stormwater runoff?
2023年7月14日 · In short, stormwater runoff is made of the rain and snowmelt that flows off land or impervious surfaces, such as rooftops, driveways, lawns, streets, etc. The U.S. Environmental Protection Agency’s (EPA) National Pollutant Discharge Elimination System (NPDES) Permitting Program regulates runoff from municipal separate storm sewer systems ...
National Stormwater Calculator | US EPA - U.S. Environmental …
2024年8月22日 · EPA’s National Stormwater Calculator (SWC) is a web-based application tool that estimates the annual amount of rainwater and frequency of runoff from a specific site using green infrastructure as low impact development controls.
NPDES Stormwater Program | US EPA
The National Pollutant Discharge Elimination System (NPDES) stormwater program regulates some stormwater discharges from three potential sources: municipal separate storm sewer systems (MS4s), construction activities, and industrial activities.
Stormwater - Wikipedia
Stormwater can soak into the soil (infiltrate) and become groundwater, be stored on depressed land surface in ponds and puddles, evaporate back into the atmosphere, or contribute to surface runoff. Most runoff is conveyed directly as surface water to nearby streams, rivers or other large water bodies (wetlands, lakes and oceans) without treatment.
Runoff: Surface and Overland Water Runoff | U.S. Geological …
2018年6月6日 · Runoff may be classified according to speed of appearance after rainfall or melting snow as direct runoff or base runoff, and according to source as surface runoff, storm interflow, or groundwater runoff.
This fact sheet explains how urbanized areas affect water quality through increased runoff and pollutant loads and what homeowners can do to prevent stormwater pollution (EPA 841-F-03-003). Keywords: stormwater, factsheet, urban, prevention, runoff, infiltration, urbanized
What Is Stormwater Runoff and What Are Its Impacts?
2022年6月10日 · Runoff from rain or snow is usually described as “stormwater runoff.” This is water that flows over land and doesn’t permeate the soil. Stormwater naturally runs off of almost any type of land surface, especially during big storms.
How to Manage and Control Storm Water Runoff (Fact Sheet)
2001年4月1日 · Some ways to help control runoff are preventing soil erosion, providing basement flood protection, landscaping, providing proper roof drainage, and minimizing paved surfaces. Completing this fact sheet will help you evaluate how storm water affects the environmental quality of your property and properties downstream.
What Is Stormwater Management and Why Is It Important?
Stormwater management is the effort to reduce runoff of rainwater or melted snow into streets, lawns and other sites and the improvement of water quality, according to the United States Environmental Protection Agency (EPA).