surface runoff

Overland flow of excess water (with or without accumulated contaminants) that cannot be absorbed by the ground as infiltration.

When there is very heavy rainfall on California hillsides over a prolonged period, there is almost always ensuing surface runoff.


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  • Surface runoff — Runoff flowing into a stormwater drain Surface runoff is the water flow that occurs when 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… …   Wikipedia

  • surface runoff —    That part of runoff traveling over the ground surface and through channels [16] …   Lexicon of Cave and Karst Terminology

  • Surface-water hydrology — is a field that encompasses all surface waters of the globe (overland flows, rivers, lakes, wetlands, estuaries, oceans, etc). This a subset of the hydrologic cycle that does not include atmospheric, and ground waters. Surface water hydrology… …   Wikipedia

  • Runoff model (reservoir) — A runoff model is a mathematical model describing the rainfall runoff relations of a rainfall catchment area or watershed. More precisely, it produces the surface runoff hydrograph as a response to a rainfall hydrograph as input. In other words,… …   Wikipedia

  • runoff — noun a) That portion of precipitation or irrigation on an area which does not infiltrate or evaporate, but instead is discharged from the area.<! That which is lost without entering the soil is called surface runoff. That which enters the soil …   Wiktionary

  • Runoff — Run off or runoff may refer to:* Surface runoff, the flow of water, from rain, snowmelt, or other sources, over land * Runoff model (reservoir), a mathematical model describing the rainfall runoff relations of a rainfall catchment area or… …   Wikipedia

  • runoff —    1. The discharge of water through the surface streams of a drainage basin [16].    2. The sum of surface runoff and groundwater flow that reaches a stream [16] …   Lexicon of Cave and Karst Terminology

  • Surface irrigation — is defined as the group of application techniques where water is applied and distributed over the soil surface by gravity. It is by far the most common form of irrigation throughout the world and has been practiced in many areas virtually… …   Wikipedia

  • runoff — /run awf , of /, n. 1. something that drains or flows off, as rain that flows off from the land in streams. 2. a final contest held to determine a victor after earlier contests have eliminated the weaker contestants. 3. a deciding final contest… …   Universalium

  • runoff — precipitation that flows across the ground and enters streams, rivers and lakes; may carry pollutants. Also used for the total discharge of a stream, both surface and subsurface, over a given time period. Defined as the depth to which a drainage… …   Dictionary of ichthyology

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