Monday, July 20, 2015

Tuesday, June 30, 2015

What is Watershed?



Watershed is defined as:

Topographically  delineated  area  that  is  drained  by  a  stream,  and  a  major river basin as a collection watershed (Brooks, 1993).

Total land area that is drained to one point of a stream or a river.

Watershed  is  a  natural  drainage  area  where  precipitation  is  collected  and cycled.  It  tied  together  physically  by  an  inter-related  stream  pattern  (Eren,1983).

Watershed is a unit of land catching precipitation and serving to move and concentrate water at some lower elevation (Krygier, J.T. 1963)

Watershed  is  made  up  of  the  natural  resource  in  a  basin,  especially  the water, soil and the vegetative factors (Eren, T. 1977)  

A watershed or catchments is any surface (varying  from a few hectares to several  thousand  square  kilometers)  in  which  rainfall  is  collected  and conveyed to a common natural waterway (Botero, 1983)


Watershed, catchments, drainage basin, river basins are interchangeable and used commonly as per management objectives. However, a watershed is differentiates from a river basin in that a river basin, whose main stream leads to the sea, may encompass hundreds of watersheds and many other types of land formation.