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watershed    音标拼音: [w'ɔtɚʃ,ɛd] [w'ɑtɚʃ,ɛd]
n. 分水岭

分水岭

watershed
n 1: a ridge of land that separates two adjacent river systems
[synonym: {watershed}, {water parting}, {divide}]
2: the entire geographical area drained by a river and its
tributaries; an area characterized by all runoff being
conveyed to the same outlet; "flood control in the Missouri
basin" [synonym: {river basin}, {basin}, {watershed}, {drainage
basin}, {catchment area}, {catchment basin}, {drainage area}]
3: an event marking a unique or important historical change of
course or one on which important developments depend; "the
agreement was a watershed in the history of both nations"
[synonym: {landmark}, {turning point}, {watershed}]

Watershed \Wa"ter*shed`\, n. [Cf. G. wasserscheide; wasser water
scheide a place where two things separate, fr. scheiden to
separate.]
[1913 Webster]
1. The whole region or extent of country which contributes to
the supply of a river or lake.
[1913 Webster]

2. The line of division between two adjacent rivers or lakes
with respect to the flow of water by natural channels into
them; the natural boundary of a basin; -- called also
{divide} and {water parting}.
[1913 Webster PJC]

3. a point in time marking an important transition between
two situations, or phases of an activity; a turning point.
[PJC]


Divide \Di*vide"\, n.
A dividing ridge of land between the tributaries of two
streams; also called {watershed} and {water parting}. A
divide on either side of which the waters drain into two
different oceans is called a {continental divide}.
[1913 Webster PJC]


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英文字典中文字典相关资料:


  • WATERSHED Definition Meaning - Merriam-Webster
    : a dividing ridge (as a mountain range) separating one drainage area from others : the area that drains into a river or lake Nglish: Translation of watershed for Spanish Speakers
  • What is a watershed? - NOAAs National Ocean Service
    What is a watershed? It’s a land area that channels rainfall and snowmelt to creeks, streams, and rivers, and eventually to outflow points such as reservoirs, bays, and the ocean
  • Watersheds and Drainage Basins | U. S. Geological Survey
    Watersheds can be as small as a footprint or large enough to encompass all the land that drains water into rivers that drain into Chesapeake Bay, where it enters the Atlantic Ocean This map shows one set of watershed boundaries in the continental United States; these are known as National hydrologic units (watersheds)
  • What is a watershed and why does it matter? - Washington . . .
    Watersheds play a crucial role in the environment and human society, as they determine both the availability and quality of water They supply drinking water, support agriculture, sustain ecosystems, and help manage stormwater Healthy watersheds provide a natural filtration system for water, preventing pollutants from entering rivers and lakes
  • How Watersheds Work - HowStuffWorks
    The Environmental Protection Agency defines a watershed as any body of land that flows downhill into a waterway Basically, "watershed" is a broad term used to describe how water flows across land to feed streams, rivers and lakes [source: Environmental Protection Agency]
  • WATERSHED | English meaning - Cambridge Dictionary
    WATERSHED definition: 1 an event or period that is important because it represents a big change in how people do or… Learn more
  • What is a Watershed How Does it Work? - MWMO
    Simply put, a watershed is the area of land that drains to a particular lake, river or other waterbody The illustration to the right, courtesy of Michigan Sea Grant, illustrates how a typical watershed works When a drop of water falls inside the watershed, it flows toward the main body of water





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