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rule of the thalweg

Subject: Law

[from German: literally, valley line] The rule for determining the boundary line between two states that are separated by a navigable river containing a newly formed island. ...

thalweg, rule of the

thalweg, rule of the   Quick reference

A Dictionary of Law (10 ed.)

Reference type:
Subject Reference
Current Version:
2022
Subject:
Law
Length:
159 words

..., rule of the [from German: literally, valley way] The rule for determining the boundary line between two states that are separated by a navigable river containing a newly formed island. According to this rule, the boundary line moves with the centre of the navigable channel, i.e. it is delineated as being the centre of the course with the strongest current, so that the newly formed island must lie on one side of it or the other. In the case of Iowa v Illinois 147 US 7 ( 1893 ) the expression “middle of the Mississippi River” was interpreted as the...

rule of the thalweg

rule of the thalweg  

Reference type:
Overview Page
Subject:
Law
[from German: literally, valley line]The rule for determining the boundary line between two states that are separated by a navigable river containing a newly formed island. According to this rule, ...
boundary river

boundary river  

Reference type:
Overview Page
‘Boundary rivers are those which separate different states from each other. If such a river is not navigable, the boundary line as a rule follows the mid-line of the river ...
accretion

accretion  

Reference type:
Overview Page
Subject:
Law
N.The process by which new land formations are legally assimilated to old by a change in the flow of a water channel. In contrast to avulsion, this process involves a very slow, near imperceptible, ...
boundary

boundary  

Reference type:
Overview Page
Subject:
Law
N.(in international law) An imaginary line that determines the territorial limits of a state. Such boundaries define the limitation of each state's effective jurisdiction. They are three-dimensional ...
thalweg

thalweg   Reference library

Encyclopaedic Dictionary of International Law (3 ed.)

Reference type:
Subject Reference
Current Version:
2009
Subject:
Law, International Law
Length:
244 words

... ‘In the case of rivers separating two States … their frontiers are divided by the geographical centre running down the middle, except where the stream in navigable, in which case the centre of the deepest channel, or as it is usually called, thethalweg”, is taken as the boundary. The derivation of this word indicates the downward course or the course followed by the vessels of the largest tonnage in descending the river’: Colombos , International Law of the Sea (6th ed.), 224. The rationale for the thalweg rule was stated by the U.S. Supreme Court in...

boundary

boundary (in international law)   Quick reference

A Dictionary of Law (10 ed.)

Reference type:
Subject Reference
Current Version:
2022
Subject:
Law
Length:
72 words

... n. ( in international law ) An imaginary line that determines the territorial limits of a state. Such boundaries define the limitation of each state’s effective jurisdiction . They are three-dimensional in nature in that they include the airspace and subsoil of the state, the terra firma within the boundary, and the maritime domain of the state’s internal waters and territorial sea. See also accretion ; avulsion ; thalweg, rule of the...

boundary river(s)

boundary river(s)   Reference library

Encyclopaedic Dictionary of International Law (3 ed.)

Reference type:
Subject Reference
Current Version:
2009
Subject:
Law, International Law
Length:
292 words

...other. If such a river is not navigable, the boundary line as a rule follows the mid-line of the river; or of its principal arm if it has more than one. If navigable, the boundary line as a rule follows the mid-line of the so-called thalweg , of the principal channel of the river, and this general rule for the two kinds of rivers was adopted by the Treaties of Peace of 1919 except in special cases. But it is possible for the boundary line to be one bank of the river, so that the whole bed then belongs to one of the riparian states only. This is an...

accretion

accretion   Quick reference

A Dictionary of Law (10 ed.)

Reference type:
Subject Reference
Current Version:
2022
Subject:
Law
Length:
196 words

...claim title to the new land so created. See also thalweg, rule of the . For cases in which acquisition of territory by accretion has arisen, see The Anna ( 1805 ) 5 C Rob 373 ( Lord Stowell ) and Secretary of State for India v Chellikani Rama Roa ( 1916 ) 32 TLR 652 (PC). There is a large volume of US decisions concerning accretion; the classic illustration of a finding of both accretion and avulsion can be found in the Chamizal Arbitration 5 AJIL 785 ( 1911 ) concerning the path of the Rio...

Kasikili–Sedudu Island Case

Kasikili–Sedudu Island Case   Reference library

Encyclopaedic Dictionary of International Law (3 ed.)

Reference type:
Subject Reference
Current Version:
2009
Subject:
Law, International Law
Length:
266 words

...out in art. III of the 1890 Treaty, which called for the boundary to be the ‘centre of the main channel’, adverting on the various meanings and possible applications of this thalweg principle and concluding that subsequent practice and later maps had not demonstrated any intention to deviate from that principle. The Court also found (11 to 4) that the Kasikili–Sedudu Island formed part of the territory of Botswana. In denying Namibia's prescriptive claim, the Court stated that Namibia ‘has not established with the necessary degree of precision and...

Maritime Boundaries

Maritime Boundaries   Reference library

The Oxford Encyclopedia of Maritime History

Reference type:
Subject Reference
Current Version:
2007
Subject:
History, Military History
Length:
3,256 words

...the territorial sea. Moreover, as a large number of states claimed a territorial sea of only three nautical miles, in most cases the boundary of the territorial sea between states measured only a limited distance. There existed a more extensive practice concerning the delimitation of internal waters, such as rivers and lakes. In rivers it is common to delimit the boundary along the thalweg (the midline of the principal channel of the river) and in lakes the middle line. This practice may have exercised some influence on the early development of the law of...

War and Religion: The Iran–Iraq War

War and Religion: The Iran–Iraq War   Reference library

Peyman Asadzade

The Oxford Encyclopedia of Politics and Religion

Reference type:
Subject Reference
Current Version:
2020
Subject:
Social sciences, Politics, Religion
Length:
6,138 words

...that the primary factor was the long-term territorial disputes over Shatt al-Arab (or Arvand Rud in Persian), a river that forms the Iran−Iraq border. The river had caused tension between Iran and the Ottoman Empire, and later caused tension between Iran and Iraq for a long time ( Ateş, 2013 ; Mojtahed-Zadeh, 2007 ; Swearingen, 1988 ). The last territorial treaty between Iran and Iraq, signed in 1975 (and known as the Algiers Accord), was the basis on which the countries decided to demarcate their river boundaries according to the thalweg line. The...

Measuring Soil Loss and Subsequent Nutrient and Organic Matter Loss on Farmland

Measuring Soil Loss and Subsequent Nutrient and Organic Matter Loss on Farmland   Reference library

Vincenzo Bagarello and Vito Ferro

The Oxford Encyclopedia of Agriculture and the Environment

Reference type:
Subject Reference
Current Version:
2020
Subject:
Science and technology, Environmental Science, Engineering and Technology
Length:
14,826 words
Illustration(s):
32

...of each plot DEM with the transect coverage allowed for obtaining both the cross-sections and the main rill morphological features. The automatic method to extract rills from DEM applied the theory of drop analysis by Broscoe ( 1959 ) . This theory is based on the concept that when the order of the channels within the network increases, the slope of the thalweg decreases, and the length of the channels increases. For a 44-m-long plot, Figure 12 shows the comparison between the map of rills extracted by the drop analysis (the automatic method, shown...

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