Estuary (1) An area where fresh water meets salt water, for example, bays, mouths of rivers, salt marshes, and lagoons. (2) That portion of a coastal stream influenced by the tide of the body of water into which it flows, for example, a bay or mount of a river, where the tide meets the river current, an area where fresh and marine waters mix. The Coastal Zone Management Act of 1972 defines an estuary as “that part of a river or stream or other body of water having unimpaired connection with the open sea, where the sea-water is measurably diluted with freshwater derived from land drainage.” These brackish water ecosystems shelter and feed marine life, birds, and wildlife.
Source: http://www.bvsde.paho.org/bvsacg/i/fulltext/dicciona/dicciona.pdf
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Author of the Water Words Dictionary source of text: Gary A. Horton
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