Drainage basin
Drainage Basin
A Drainage Basin (pronounced: /ˈdreɪ.nɪdʒ ˈbeɪ.sɪn/), also known as a catchment area, is a geographical area of land where all surface water from rain, melting snow, or ice converges to a single point at a lower elevation, typically the exit of the basin, where the waters join another waterbody, such as a river, lake, reservoir, estuary, wetland, sea, or ocean.
Etymology
The term "Drainage Basin" is derived from the English words "drainage" and "basin". "Drainage" comes from the verb "drain" which means to cause water or another liquid to go out from something, and "basin" refers to a large or small depression in the surface of the land or in the ocean floor.
Related Terms
- Watershed: An area or ridge of land that separates waters flowing to different rivers, basins, or seas.
- River Basin: The land that water flows across or under on its way to a river.
- Catchment Area: An area from which surface runoff is carried away by a single drainage system.
- Surface Runoff: Water, from rain, snowmelt, or other sources, that flows over the land surface, and is a major component of the water cycle.
- Water Cycle: The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land.
See Also
External links
- Medical encyclopedia article on Drainage basin
- Wikipedia's article - Drainage basin
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