Components of Watershed: Boundary, Sub-Basin, Drainage Divides, Stream Network and Outlets (Especially for GATE-Geospatial 2022)

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A watershed has five components:

Diagram Shows Five Components of Watershed
Picture Shows Watershed Components

Sub-Basin

Large watershed and can also contain smaller watersheds, called subbasins.

Drainage Divides

The boundaries between watersheds are termed drainage divides.

Picture Shows Components of Drainage Basin

Outlets

The outlet, or pour point, is the point on the surface at which water flows out of an area. It is the lowest point along the boundary of a watershed.

Delineation of Watershed Can be Divided into Types and These Are Area Based and Point Based

An area-based method divided a study area into a series of watershed, one for each stream section. Whereas, a point-based method derives a watershed for each selected point. The selected point may be an outlet, a gauge station or a dam.

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