Thalweg — Law Dictionary

Definitions from Case Law

From 291 U.S. 361 - State of New Jersey v. State of Delaware · 1934Most cited · 124 citing opinions

The 'Thalweg,' or downway, is the track taken by boats in their course down the stream, which is that of the strongest current.

Show all 2 Supreme Court definitions and how they changed over time 1934–1935

The Cyclopedic Law Dictionary

Walter A. Shumaker and George Foster Longsdorf; ed. James C. Cahill · 1922

A line following the lowest part of a valley whether under water or not. Webster. Where a navigable river forms the boundary of coterminous states, the thalweg, or middle of the navigable channel is generally taken as the line of separation between them. 145 111. 603. THANE (Saxon thenian, to serve).

In Saxon law. A word which sometimes signifies a nobleman; at others, a freeman, a magistrate, an oflficer, or minister. A tenant of the part of the king's lands called the king's "thaneage." Termes de la Ley.

Ballentine's Law Dictionary

James A. Ballentine · 1916

The middle of the deepest channel of a river. See 147 U. S. 1, 37 L. Ed. 55, 13 Sup. Ct. Rep. 239.

Black's Law Dictionary

Henry Campbell Black, M.A. · 1910

Germ. A term used in topography to designate a line representing the deepest part of a continuous depression in the surface, such as a watercourse; hence the middle of the deepest part of the channel of a river or other, streain. See Iowa v. Illinois, 147 U. S. 1, 13 Sup. Ch 239, 37 L. Ed. 55; Keokuk & H. Bridge Co. v. People, 145 HI. 596, 34 N. E. 482.