That part of precipitation, snowmelt, or irrigation water that flows from the land to streams or other surface waters
The water that flows overland to lakes or streams during and shortly after a precipitation event
A second or further round of an indecisive election, after other candidates (often all but the last two) have been eliminated
Drainage or flood discharge that leaves an area as surface flow or as pipeline flow, having reached a channel or pipeline by either surface or subsurface routes Generally, surface water entering river, lakes, or reservoirs < back to top S
rainwater or snowmelt which flows over the surface of the ground without seeping into the soil
(1) The portion of rainfall that is not absorbed by the deep strata and not lost to vegetation or evaporation It is that which finds its way into streams as surface flow (2) The total stream discharge of water (quantity or rate), including both surface and sub surface flow, usually expressed in acre feet or in cubic feet per second per square mile of drainage area
(1) That part of the precipitation, snow melt, or irrigation water that appears in uncontrolled 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 ground-water runoff (2) The total discharge described in (1), above, during a specified period of time (3) Also defined as the depth to which a drainage area would be covered if all of the runoff for a given period of time were uniformly distributed over it
That part of the precipitation that appears in uncontrolled surface streams, drains, or sewers It is the same as streamflow unaffected by artificial diversion, imports, storage, or other works of man in or on the stream channels
That part of the precipitation that appears in surface streams It is the same as streamflow unaffected by artificial diversions, storage, or other works of man in or on the stream channels Runoff may be classified as follows
Water traveling across the ground surface, caused by heavy rains or irrigation If the surrounding ground is sloped toward a pond, surface runoff can wash dirt and garden chemicals into the water
n: Surface water effluent (usually from precipitation but may be from human activities such as irrigation) that moves too quickly to be absorbed into the ground It flows down contour gradients to enter stream and river systems, carrying with it anything light enough to be borne in the volume of water, which may be light after a small rain or tremendous in the wake of a storm, when even large boulders and trees get swept up in the runoff When runoff travels over deforested or unplanted agricultural lands, it carries away large quantities of topsoil Runoff from agricultural areas often carries heavy doses of biocides , fertilizers, and other nutrients, which can lead to eutrophication when introduced into aquatic systems
{i} excess liquid that drains or flows into streams; final round in an election or competition
water from rain, snow melt, or irrigation that flows over the ground and returns to streams, lakes, or wetlands It can collect pollutants from air or land and carry them to the receiving waters
Water from rain, snow melt, or irrigation that flows over the ground surface and returns to streams It can collect pollutants from air or land and carry them to the receiving waters S
The flow of water, usually from precipitation, which is not absorbed into the ground It flows across the land and eventually runs to stream channels, lakes, oceans, or depressions or lowpoints in the Earth's surface The characteristics that affect the rate of runoff include rainfall duration and intensity as well as the ground's slope, soil type, and ground cover Runoff can pick up pollutants from the air and land, carrying them into the streams, lakes, etc