Skip to main content

Vocabulary Term Details


Definition (

That part of the precipitation, snow melt, or irrigation water that appears in uncontrolled (not regulated by a dam upstream) surface streams, rivers, drains or sewers. 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. (USGS)

Preferred Units: N/A

Scope Note:

Broader TermsNarrower TermsRelated Terms
Soil water balance
Subsurface runoff
Water erosion

This term is used for the following terms: 
Water runoff

Approved Date

Items having a keyword or observed-property relationship to this subject term

Click here to give feedback on this term or suggest an update.