thalweg


Also found in: Dictionary, Thesaurus, Wikipedia.

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.
References in periodicals archive ?
39 ppm DO (ppm) (Lower Values--lower than SW DO) Percent 18 to 37 Percent High Average Instream Cover (Higher Values) Thalweg Depth Max Hyporheic 14.
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.
The process occurs during floods, with fine silt deposition and formation of microrelief meadow and thalweg with flat bottomed specific to all brooks.
To examine this question the population dynamics of planktonic cultivable fecal indicator bacteria were monitored over a four week period in samples taken from the thalweg (deepest line of the riverbed) and a riverbank eddy in a non-wadable lotic system.
Equally article 45 gives up in expense of his Majesty King of the Principality of Romania, the Romanian territory part of Russia, separated from Russia after the Treaty of Paris of 1856, which on the west borders the Prut thalweg and on the south to the thalweg of the Chilia's arm and to Stari-Stambul.
Stream channel geomorphology also varied between sites, with average thalweg depths ranging from 0.
Most territorial issues that have contributed to past disputes were resolved as a result of an October 2000 rededication to recognize the thalweg, or median line of the Shatt al Arab waterway as the water border (a provision of the 1975 Algiers Accords between the Shah of Iran and the Baathist government of Iraq, abrogated by Iraq prior to its September 1980 invasion of Iran.
follows the thalweg of the River Meli [from Guinea] to its meeting with the Moa, or Makona, on the understanding that the islands marked by Letters A and B on the attached map belong to France, and that the island marked C belongs to Great Britain.
Numerosas cuencas fluviales mayores, menores y pequenas conforman redes de rios que discurren en la direccion de las quebradas, entre los cerros boscosos laterales y las confluencias de tales rios, como ocurre en el thalweg donde se forma el rio Guabayacu.
The agreement - which Saddam tore up five years later when he launched his attack on Iran -- demarcated the disputed river boundary between the two neighbours according to the thalweg line in the middle of the Shatt al-Arab waterway.