watershed

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Related to Watershed (disambiguation): Airshed, drainage basin, river basin, Drainage divide, Watertable

watershed,

elevation or divide separating the catchment areacatchment area
or drainage basin,
area drained by a stream or other body of water. The limits of a given catchment area are the heights of land—often called drainage divides, or watersheds—separating it from neighboring drainage systems.
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, or drainage basin, of one river system or group of river systems from another system or group of systems. The term is also often used synonymously with drainage basin. The continental divide in the US along the Rocky Mts. forms the watershed division between westward-flowing and eastward-flowing streams; the Mississippi watershed extends from the Rockies to the Appalachians. Often the watershed is a range of mountains, the two sides of which have widely different climatic characteristics, as in the Americas and Australia. The low Valdai Hills are an important watershed of Russia.

Watershed

Area of land that, as a result of topography, drains to a single point or area.

watershed

[′wȯd·ər‚shed]
(hydrology)
The drainage area of a stream.

watershed

1. A dividing line between drainage areas.
2. A wash, 1.
3. A water table, 1.
4. An area from which a community or region receives its supply of water.

watershed

the dividing line between two adjacent river systems, such as a ridge