WATERSHED - Definition

Pronunciation:		'wotur`shed
WordNet Dictionary

	Definition:	[n] a line that divides two adjacent river systems

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	Synonyms:	divide, water parting

	See Also:	continental divide, Great Divide, Great Dividing Range, line

Webster's 1913 Dictionary

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

Biology Dictionary

	Definition:	An area so sloped as to drain a river and all its tributaries to a single point or particular area. An area from which a river receives its water supply. The total area above a given point on a watercourse that contributes water to its flow; the entire region drained by a waterway or watercourse that drains into a lake or reservoir.