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Runoff, in hydrology, quantity of water discharged in surface streams. 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.
- The Editors of Encyclopaedia Britannica
Runoff is the flow of water across the earth, and is a major component in the hydrological cycle. Runoff that flows over land before reaching a watercourse is referred to as surface runoff or overland flow. Once in a watercourse, runoff is referred to as streamflow, channel runoff, or river runoff. Urban runoff is surface runoff ...
Surface runoff (also known as overland flow or terrestrial runoff) is the unconfined flow of water over the ground surface, in contrast to channel runoff (or stream flow). It occurs when excess rainwater, stormwater, meltwater, or other sources, can no longer sufficiently rapidly infiltrate in the soil.
Streamflow, or channel runoff, is the flow of water in streams and other channels, and is a major element of the water cycle. It is one runoff component, the movement of water from the land to waterbodies, the other component being surface runoff.
Water will flow along channels as it moves into larger creeks, streams, and rivers. Surface runoff, especially when it runs across surfaces like roads, can pick up and then deposit particulate matter and sediment into the river (which isn't good for water quality ).
1 de mai. de 2024 · To provide a clearer illustration of the urbanization effects on channel runoff during flood events, we calculated channel runoff differences between the three urbanization scenarios during the peak events, as shown in the sub-figures.
19 de out. de 2023 · Runoff occurs when there is more water than land can absorb. The excess liquid flows across the surface of the land and into nearby creeks, streams , or ponds. The most familiar type of natural runoff is snowmelt .
