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Agricultural Sciences (AGROVOC)

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Concept information

substances > water > runoff

Preferred term

runoff  

Type

  • http://www.irandoc.ac.ir/onto/irandoc-meta/Concept

Broader concept

Narrower concepts

Related concepts

Entry terms

  • surface runoff

Causes

Date Created

  • 2011-11-20T21:09:07Z

Date Modified

  • 2023-02-22T10:20:57

Definitions

Is part of

Obsolete

  • false

Parents

Synonyms

  • surface runoff

has close match

has exact match

is in scheme

note

  • http://aims.fao.org/aos/agrovoc/xDef_00d7fbc3
  • http://aims.fao.org/aos/agrovoc/xDef_c04bb711
  • Runoff includes not only the waters that travel over the land surface and through channels to reach a stream but also interflow, the water that infiltrates the soil surface and travels by means of gravity toward a stream channel (always above the main groundwater level) and eventually empties into the channel. Runoff also includes groundwater that is discharged into a stream; streamflow that is composed entirely of groundwater is termed base flow, or fair-weather runoff, and it occurs where a stream channel intersects the water table. The total runoff is equal to the total precipitation less the losses caused by evapotranspiration (loss to the atmosphere from soil surfaces and plant leaves), storage (as in temporary ponds), and other such abstractions.

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URI

http://www.irandoc.acir/onto/irandoc/c_35388

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