16 Facts About Stormwater runoff

Surface Stormwater runoff often occurs because impervious areas do not allow water to soak into the ground.

Furthermore, Stormwater runoff can occur either through natural or man-made processes.

Surface Stormwater runoff is a major component of the water cycle.

Man-made contaminants in Stormwater runoff include petroleum, pesticides, fertilizers and others.

Surface Stormwater runoff is defined as precipitation that reaches a surface stream without ever passing below the soil surface.

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Therefore, surface Stormwater runoff is a significantly factor in the controlling of soil moisture after medium and low intensity storms.

Urbanization increases surface Stormwater runoff by creating more impervious surfaces such as pavement and buildings that do not allow percolation of the water down through the soil to the aquifer.

Urban Stormwater runoff is surface Stormwater runoff of rainwater, landscape irrigation, and car washing created by urbanization.

Principal environmental issues associated with Stormwater runoff are the impacts to surface water, groundwater and soil through transport of water pollutants to these systems.

Some contaminants that create the greatest impact to surface waters arising from Stormwater runoff are petroleum substances, herbicides and fertilizers.

Surface Stormwater runoff occurring within forests can supply lakes with high loads of mineral nitrogen and phosphorus leading to eutrophication.

The resulting contaminated Stormwater runoff represents not only a waste of agricultural chemicals, but an environmental threat to downstream ecosystems.

In urban areas, surface Stormwater runoff is the primary cause of urban flooding, known for its repetitive and costly impact on communities.

Essentially this means that the locality must operate a stormwater management program for all surface runoff that enters the municipal separate storm sewer system .

One of the earliest models addressing chemical dissolution in Stormwater runoff and resulting transport was developed in the early 1970s under contract to the United States Environmental Protection Agency .

SELDM is designed to transform complex scientific data into meaningful information about the risk of adverse effects of Stormwater runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks.