[tahl-veg, -veyk]
a line, as drawn on a map, connecting the lowest points of a valley.
Chiefly International Law. the middle of the main navigable channel of a waterway that serves as a boundary line between states.

1860–65; < German, equivalent to Thal, now obsolete spelling of Tal valley (cognate with dale) + Weg way1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To thalweg
World English Dictionary
thalweg or talweg (ˈtɑːlvɛɡ)
1.  the longitudinal outline of a riverbed from source to mouth
2.  the line of steepest descent from any point on the land surface
[C19: from German, from Thal valley + Weg way, path]
talweg or talweg
[C19: from German, from Thal valley + Weg way, path]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
thalweg   (täl'věg')  Pronunciation Key 
  1. The line defining the lowest points along the length of a river bed or valley, whether underwater or not.

  2. A subterranean stream following a course similar to that of an overlying surficial stream.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Not always able to push down deep enough to get cone below pile depth, but can
  compare to thalweg.
Where the thalweg crosses a riffle, the fastest flows along the brook may be
Pools typically form in the thalweg near the outside bank of bends.
Channel incisions within this incised valley comprise a complex integrated
  drainage network with multiple thalweg features.
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature