reach

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reach

1. an open stretch of water, esp on a river
2. Nautical the direction or distance sailed by a vessel on one tack
3. a bar on the rear axle of a vehicle connecting it with some part at the front end
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Reach

 

a deeper section of a river channel located between river bays. A reach usually forms at high water where the current of the river increases and severely erodes the river bed; for example, it can be formed where a river channel winds or where a river valley narrows. A reach is also a large deep section of a river that permits navigation without necessitating dredging up the river. Fish winter in deep reaches.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

reach

[rēch]
(civil engineering)
A portion of a waterway between two locks or gages.
(control systems)
(engineering)
The length of a channel, uniform with respect to discharge, depth, area, and slope.
(geography)
A continuous, unbroken surface of land or water. Also known as stretch.
A bay, estuary, or other arm of the sea extending up into the land.
(hydrology)
A straight, continuous, or extended part of a river, stream, or restricted waterway.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

reach

The section of a sewer between structures.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.