Surface Runoff
A term used to describe the occurrence when soil is infiltrated to full capacity and excess water from rain, melted snow and other sources flow over the land. Surface runoff is a major part of the water cycle or hydrological cycle.
Surface Runoff: Precipitation, snow melt, or irrigation water in excess of what can infiltrate the soil surface and be stored in small surface depressions; a major transporter of non-point source pollutants in rivers, streams, and lakes.
Flow due to surface runoff and is that portion of precipitation that neither inflitrates into the soil nor evaporates nor evaportranspirates.
Oxygen-Demanding Material ...
It excludes any type of precipitation or surface runoff. Many streams rely on base flow during summer low flow conditions.
unit hydrograph theory Surface runoff hydrographs for storm events of the same duration will have the same shape, and the ordinates of the hydrograph will proportional to the ordinates of the unit hydrograph.
(1) An area from which surface runoff is carried away by a single drainage system. (2) The area of land bounded by watersheds draining into a river, basin or reservoir.
Definition source
Synonyms (english only) ...
The portion of the total precipitation on an area that flows away through stream channels. Surface runoff does not enter the soil. Groundwater runoff or seepage flow from groundwater enters the soil before reaching the stream.
Watershed: The land area from which surface runoff drains into a stream, channel, lake, reservoir, or other body of water; also called a drainage basin.
Watershed: All the land area and water within the confines of a drainage divide in which all surface runoff will drain through one point, such as a stream or river. Determined by topographic high points.
Rill: A small channel eroded into the soil by surface runoff; can be easily smoothed out or obliterated by normal tillage.
A structure constructed for the purpose of temporary storage of stream flow or surface runoff and gradual release of stored water at controlled rates.
DIKE ...
Water that, having infiltrated the soil surface, percolates to the ground water table and moves laterally to reappear as surface runoff.
Basin
The entire geographical area drained by a river and its tributaries.
Drainage area: Of a stream at a specified location is that area, measured in a horizontal plane, enclosed by a topographic divide from which direct surface runoff from precipitation normally drains by gravity into the stream above the specified ...
Hydrologic Cycle (Water Cycle): Water in its various manifestations as vapor evaporated from oceans, lakes, streams, and plants; rain and snow; snowpack or glacier; groundwater or surface runoff; and finally as streams and rivers returning to the sea.
(NPS) Pollution: Forms of pollution caused by sediment, organic and inorganic chemicals, and biological, radiological, and other toxic substances originating from land use activities, which are carried to lakes and streams by surface runoff.
Topography, or relief, influences the stability of the parent material or soil, the volume and rate or water infiltration into the soil profile or surface runoff, the microclimate on different aspects, and the form and quantity of precipitation.
terrace intercepts surface runoff so that water soaks into the soil or flows slowly to a prepared outlet.
Tertiary - a period of the Cenozoic Era of geologic time (65 to 2 to 3 million years ago).
 See also: Water, Runoff, Soil, Organic, Environment
  
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