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Plunge pool

 
Sci-Tech Dictionary: plunge pool
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(′plənj ′pül)

(hydrology) The water in a plunge basin. A deep, circular lake occupying a plunge basin after the waterfall has ceased to exist or the stream has been diverted. Also known as waterfall lake. A small, deep plunge basin.

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Geography Dictionary: plunge pool
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A pool at the base of a waterfall, often undercutting the sheer rock face. Plunge pools form as a result of eddying, hydraulic action, cavitation, and pothole erosion.

Wikipedia: Plunge pool
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Selandjafoss' plunge pool (Iceland)
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Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (May 2009)

A plunge pool, also known as a waterfall lake, is a pool, lake, or pond that is small in diameter, but deep. Plunge pools are formed under the force of a vertical displacement of water, from natural sources such as a waterfall or rapids, but also as the result of scour from man-made objects such as spillways and bridge abutments. The swirling water, sometimes carrying rocks within it, erodes the riverbed into a basin, often featuring irregular and rough sides. Plunge pools can remain after the waterfall has ceased to exist or the stream has been diverted.

The term can also refer to a small deep swimming pool used to cool off.

See also

v • d • e
River morphology
Large-scale features
Alluvial rivers
Bedrock river
Canyon  • Knickpoint  • Plunge pool  • Bedrock erosion
Bedforms
Regional processes
Mechanics
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Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Geography Dictionary. A Dictionary of Geography. Copyright © Susan Mayhew 1992, 1997, 2004. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Plunge pool".  Read more