A mill pond (or millpond) is a body of water used as a

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

for a water-powered mill.

Description

Mill ponds were often created through the construction of a

mill dam Mill Dam is a wetland in western Shapinsay, in Orkney, Scotland. This water body was not shown on the 1840 survey map of the island, since it is a man-made creation from a damming in the 1880s.G.T, Masters, ''Orkney, Approaches to Kirkwall'', HMS ...

weir A weir or low head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of l ...

(and mill stream) across a

waterway A waterway is any navigable body of water. Broad distinctions are useful to avoid ambiguity, and disambiguation will be of varying importance depending on the nuance of the equivalent word in other languages. A first distinction is necessary b ...

. In many places, the common proper name Mill Pond has remained even though the mill has long since gone. It may be fed by a man-made stream, known by several terms including

leat A leat (; also lete or leet, or millstream) is the name, common in the south and west of England and in Wales, for an artificial watercourse or aqueduct dug into the ground, especially one supplying water to a watermill or its mill pond. Othe ...

and'' mill stream.'' The channel or stream leading from the mill pond is the

mill race A mill race, millrace or millrun, mill lade (Scotland) or mill leat (Southwest England) is the current of water that turns a water wheel, or the channel ( sluice) conducting water to or from a water wheel. Compared with the broad waters of a mi ...

, which together with weirs, dams, channels and the terrain establishing the mill pond, delivers water to the mill wheel to convert potential and/or kinetic energy of the water to mechanical energy by rotating the mill wheel. The production of mechanical power is the purpose of this civil engineering hydraulic system. The term mill pond is often used colloquially and in literature to refer to a very flat body of water. Witnesses of the loss of

RMS Titanic RMS ''Titanic'' was a British passenger liner, operated by the White Star Line, which sank in the North Atlantic Ocean on 15 April 1912 after striking an iceberg during her maiden voyage from Southampton, England, to New York City, United ...

reported that the sea was "like a mill pond".Ruth Becker
Titanic witness Cromford mill pond

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Footnotes and references

Footnotes

References

*mill pond. Dictionary.com. Dictionary.com Unabridged. Random House, Inc. http://dictionary.reference.com/browse/mill pond (accessed: September 7, 2013). *mill pond. Dictionary.com. Collins English Dictionary - Complete & Unabridged 10th Edition. HarperCollins Publishers. http://dictionary.reference.com/browse/mill pond (accessed: September 7, 2013). *leat. Dictionary.com. Collins English Dictionary - Complete & Unabridged 10th Edition. HarperCollins Publishers. http://dictionary.reference.com/browse/leat (accessed: September 7, 2013).

External links

{{Authority control Hydraulic engineering Ponds Hydrology Topography