Surface Runoff

Surface runoff is the water flow that occurs when the soil is infiltrated to full capacity and excess water from rain, meltwater, or other sources flows over the land. This is a major component of the water cycle, and the primary agent in water erosion.

Runoff that occurs on surfaces before reaching a channel is also called a nonpoint source. If a nonpoint source contains man-made contaminants, the runoff is called nonpoint source pollution. A land area which produces runoff that drains to a common point is called a drainage basin. When runoff flows along the ground, it can pick up soil contaminants including, but not limited to petroleum, pesticides, or fertilizers that become discharge or nonpoint source pollution.

Read more about Surface RunoffGeneration, Human Influence, Mitigation and Treatment, Measurement and Mathematical Modeling, See Also

Other articles related to "surface runoff, runoff":

Surface Runoff - See Also
... wastewater Agricultural nutrient runoff Catchwater Flood forecasting Hydrological modelling Nationwide Urban Runoff Program (NURP) – U.S ... Research program Nonpoint source pollution Runoff curve number Runoff model (reservoir) Soil conservation Soil contamination Stormwater Trophic state index Water pollution ...
Water Pollution Line Source
... This phenomenon generally arises when surface runoff scours soil contaminants from upper soil layers and transports these pollutants to a linear receiving water ... slash-and-burn activity and urban stormwater runoff ... The resulting surface runoff water carrying pollutants may be considered a line source discharging into a river or stream ...
Hydrological Transport Model - Model Components - Surface Runoff Modelling
... A key component of a hydrological transport model is the surface runoff element, which allows assessment of sediment, fertilizer, pesticide and other chemical contaminants ... Laboratory, one of the first attempts to calibrate a surface runoff model with field data for a variety of chemical contaminants ... The attention given to surface runoff contaminant models has not matched the emphasis on pure hydrology models, in spite of their role in the generation of stream loading contaminant ...

Famous quotes containing the word surface:

    White Pond and Walden are great crystals on the surface of the earth, Lakes of Light.... They are too pure to have a market value; they contain no muck. How much more beautiful than our lives, how much more transparent than our characters are they! We never learned meanness of them.
    Henry David Thoreau (1817–1862)