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{{globalize|article|us|reason=only in the US would you define a reach between arbitrary features; normally they are set by the physics of sail|date=December 2019}}
A '''reach''' is a
They are traditionally defined by the [[Point of sail#Reaching|capabilities of sailing boats]], as a stretch of a watercourse which, because it is straightish, can be sailed in one "[[
Reaches are often named by those using the river, and a reach may be named for landmarks, natural features, and historical reasons (see, for instance, [[Gallions' Reach]], named after the family that once owned its banks).
▲They are traditionally defined by the [[Point of sail#Reaching|capabilities of sailing boats]], as a stretch of a watercourse which, because it is straightish, can be sailed in one [[:Wiktionary:reach#English|reach]] (that is, without [[Tacking (sailing)|tacking]]).
A reach may be an expanse, or widening, of a stream or river channel. This commonly occurs after the river or stream is dammed. A reach is similar to an
In [[fluvial]] [[hydrology]], a reach is a convenient subdivision of study; it may be any length of river of fairly uniform characteristics, or the length between [[gauging station]]s, or simply the length of a watercourse between any two defined points.<ref>[http://water.usgs.gov/wsc/glossary.html#R Hydrologic Definitions], Science in Your Watershed, [[United States Geological Survey|USGS]]</ref><ref>{{cite web |title=Glossary: stream-related terms |archive-url=https://web.archive.org/web/20141207192549/https://www.streamnet.org/glossarystream.html|url=http://www.streamnet.org/glossarystream.html |website=Streamnet |date=7 December 2014|archive-date=2014-12-07}}</ref> These may be measured in terms of [[river mile]]s.▼
▲A reach may be an expanse, or widening, of a stream or river channel. This commonly occurs after the river or stream is dammed. A reach is similar to an [[Arm (geography)|arm]], though an arm may bend and thus have multiple reaches. The term "reach" can also refer to a level stretch, as between river rapids or locks in a [[canal]].{{cn}} The word may also be used more generally to refer to any extended portion or stretch of land or water, or even metaphorically.
▲In [[fluvial]] [[hydrology]], a reach is a convenient subdivision of study; it may be any length of river of fairly uniform characteristics, or the length between [[gauging station]]s, or simply the length of a watercourse between any two defined points.<ref>[http://water.usgs.gov/wsc/glossary.html#R Hydrologic Definitions], Science in Your Watershed, [[United States Geological Survey|USGS]]</ref><ref>{{cite web |title=Glossary: stream-related terms |archive-url=https://web.archive.org/web/20141207192549/https://www.streamnet.org/glossarystream.html|url=http://www.streamnet.org/glossarystream.html |website=Streamnet |date=7 December 2014}}</ref>
As of 2015, the [[US Board on Geographic Names]] records 334 place names in the US with the characterization of a named "reach".<ref>[http://geonames.usgs.gov/apex/f?p=136:2:12938640691775:pg_R_49974142591090605124:NO&pg_min_row=91&pg_max_rows=15&pg_rows_fetched=15 USGS Survey GNIS Database]</ref>
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==Gallery==
<gallery>
Image:Hanford Reach.jpg|Example: [[Hanford Reach National Monument]], Washington State,
File:River Thames Reaches.jpg|A map of the reaches of the River Thames; it can be seen that a reach is a straightish stretch (and can therefore be sailed in one [[:Wiktionary:reach#English|reach]], one straight-line path between [[Tacking (sailing)|tacks]], unless the wind is too close to head-on to allow the sailing-boat to [[Point of sail#Reaching|reach]])
File:Barge Match (Thames River) RMG PY4069.tiff|[[Thames barge]]s reaching on the Thames during a race; they are probably on [[Gravesend#Gravesend and the River Thames|Gravesend Reach]]
</gallery>
==See also==
{{Wiktionary|reach}}
*[[Rapids|Rapid]]
*[[Stream pool]]
▲*[[Rapid]]
==References==
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