thalweg

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thalweg

[′täl‚veg]
(geography)
The middle of the principal navigable waterway which serves as a boundary between two states.
(geology)
A line connecting the lowest points along a stream bed or a valley. Also known as valley line.
A line crossing all contour lines on a land surface perpendicularly.
(hydrology)
Water seeping through the ground below the surface in the same direction as a surface stream course.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Over the river's racket, words wouldn't reach her, nor that thalweg she wants to fall asleep to.
My friend can dream up a thalweg and sleep easily 'til dawn.
Over time, the river itself will meander accordingly, and so, eventually, will the thalweg, snaking from side to side, belying any government's stake in its stability.
4, 5) etc., through the floodplain, thalweg and anthropogenic river bed geotops.
The process occurs during floods, with fine silt deposition and formation of microrelief meadow and thalweg with flat bottomed specific to all brooks.
Topolineaments are portrayed in the topography as: surface elevations, rapid changes in slope, surface crenulations, or valley thalwegs. Hydrographically-controlled topolineaments delimit very well grass-covered valley bottoms in the form of two parallel lines.
The greatest lowering of both the base and upper crest of the scarp is to be observed in the Bystrzyca river valley thalweg (Figs.
The described segment consists of two basins, which bear thalwegs of different orientation.