Geography • Physical GeographyMedium
In hydrology, what does the term 'Thalweg' refer to?
A. The point of maximum sediment deposition in a river bend
B. The line of lowest elevation along the course of a stream or valley✓ Correct Answer
C. The zone of highest water temperature in a stratified lake
D. The subsurface water table in arid regions
💡 Solution & Explanation
The thalweg is defined as the line of lowest elevation along the length of a stream bed or valley, tracing the deepest continuous channel where water naturally flows. Unlike depositional zones or water temperature strata, this geographical feature maps out the path of maximum kinetic energy and minimum flow resistance in river hydrology. Understanding the thalweg is essential for defining international river boundaries between sovereign nations.
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