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watershed

watershed

16 6.1
An area of land where rain flows into one river
  • noun
  • /ˈwɔːtərʃɛd/
  • Specialized
translation icon : cuenca hidrográfica
  • In 1996, the Episcopal Diocese of Massachusetts shifted its diocese boundaries from political divisions to watershed boundaries.
  • watershed management
  • watershed restoration
  • watershed scale

Examples

  • The Murray-Darling watershed spans parts of four states and all of the Australian Capital Territory.

    Academic text (2008)
  • Let me ask you, how much do you know about the Cahula Creek Watershed?

  • And, where possible, the Forest Service is using local contractors for watershed restoration work.

    Academic text (1993)
  • Similarly, local water management is compatible with ecosystem goals for the entire watershed from which water is drawn.

    Academic text (1999)
  • Cautious management of the watershed, the lake ecosystem, and the fishery could have positive effects.

    Academic text (1992)
  • The majority of the water Israelis use comes from the watershed around the Sea of Galilee.

    Fiction book (2002)
  • Slightly larger than the state of Rhode Island, this watershed contains both desert and savanna grasslands.

    Academic text (1994)
  • Fifteen million people live in the bay's 64,000 square mile watershed, which includes Baltimore, Washington, and Richmond.

    Academic text (1999)
  • Burke Creek drains a small, high-relief watershed, flows through a sedimentation basin in the BCRA, and enters Lake Tahoe.

    Academic text (2008)
  • The river's flow was influenced by the surrounding watershed, which channels rainwater to different basins.

Synonyms

basin
vswatershed
72 3.1

An area of land where water collects and flows into a river, lake, or sea

is more narrowly the region defined by flow boundaries rather than shape
divide
vswatershed
  • Specialized
16 7.6

A high line of land that makes rivers flow to different seas

also refers to the drained region, not only the high land
catchment
vswatershed
  • Specialized
3 6.4

An area of land that collects rain and sends water into a river or reservoir

by contrast, can mean the dividing land between drainage regions
river basin
vswatershed
  • Specialized
1 3.5

Land where a river and its streams send water to the same place

can also mean the separating high land rather than the drained area
catchment area
vswatershed
  • Specialized
1 5.6

An area of land where rain and water flow into the same river, lake, or reservoir

may instead denote the high land dividing neighbouring drained regions
drainage basin
vswatershed
  • Specialized
1 4.0

A large area of land where all the rain and rivers flow into the same river or sea

can alternatively mean the ridge that divides such drained areas
drainage area
vswatershed
  • Specialized
1 3.7

Area of land that sends water into a river or lake

is also used for the high ridge that splits flow directions
water parting
vswatershed
  • Specialized
7.3

A high line of land that sends rainwater to different rivers

includes both that dividing ridge and the larger drained region
catchment basin
vswatershed
  • Specialized
6.2

An area of land where all rain flows into a river, lake or reservoir

can also mean the ridge separating two neighbouring drainage systems

Compounds

An event that causes a very important change in a person's life or history

How Big

river basin
  • Specialized
1 3.5
watershed
  • Specialized
16 6.1
catchment
  • Specialized
3 6.4
headwater
  • Specialized
6 7.2

Surface Forms

watershed singular
watersheds plural

Morphology

watershed = water + shed (semi-transparent) = water + shed

The components 'water' and 'shed' are identifiable, but the specialized geographical meaning 'area that sheds water/region drained by a river' is not a direct, everyday inference for many learners.

Etymology

Watershed comes from the parts water and shed, where shed here means to let water flow away; a watershed is the area of land that 'sheds' water into one river, lake, or sea.