Thalweg in the context of "Stream profile"

The Brisbane central business district (CBD), officially Brisbane City, is the central suburb and central business district of Brisbane, the state capital of Queensland, Australia. It is also colloquially referred to as the "CBD", "the city", or simply "town". The CBD is located on a point on the northern bank of the Brisbane River, historically known as Meanjin, Mianjin or Meeanjin in the local Yuggera dialect. The triangular-shaped peninsula is bounded by the median of the Brisbane River to the east, south and west. The point, known at its tip as Gardens Point, slopes upward to the north-west where the city is bounded by parkland and the inner city suburb of Spring Hill to the north. The CBD is bounded to the north-east by the suburb of Fortitude Valley. To the west the CBD is bounded by Milton, Petrie Terrace, and Kelvin Grove.

In the 2021 census, the suburb of Brisbane City had a population of 12,587 people.

Overdeepening is a characteristic of basins and valleys eroded by glaciers. An overdeepened valley profile is often eroded to depths which are hundreds of metres below the lowest continuous surface line (the thalweg) along a valley or watercourse. This phenomenon is observed under modern day glaciers, in salt-water fjords and fresh-water lakes remaining after glaciers melt, as well as in tunnel valleys which are partially or totally filled with sediment. When the channel produced by a glacier is filled with debris, the subsurface geomorphic structure is found to be erosionally cut into bedrock and subsequently filled by sediments. These overdeepened cuts into bedrock structures can reach a depth of several hundred metres below the valley floor.

Overdeepened fjords and lakes have significant economic value as harbours and fisheries. Overdeepened basins and valleys filled with sediment (termed tunnel valleys) are of particular interest to engineers, petroleum geologists, and hydrologists; engineers apply the information for developing foundations and tunnel construction, petroleum geologists use tunnel valley locations to identify potential oil fields, while hydrologists apply this knowledge for groundwater resource management.

The border between Croatia and Serbia in the area of the Danube is disputed, an important part of their broader diplomatic relations. While Serbia claims that the thalweg of the Danube valley and the centreline of the river represent the international border between the two countries, Croatia disagrees, claiming that the international border lies along the boundaries of the cadastral municipalities located along the river—departing from the course at several points along a 140-kilometre (87 mi) section. The cadastre-based boundary reflects the course of the Danube which existed in the 19th century, before anti-meandering and hydrotechnical engineering works altered its course. The area size of the territory in dispute is reported variously, up to 140 km (54 square miles).

The dispute first arose in 1947, but was left unresolved during the existence of the Socialist Federal Republic of Yugoslavia. After the breakup of Yugoslavia, the dispute would become a contentious issue. Particular prominence was given to the dispute at the time of Croatia's accession to the European Union. The dispute remains unresolved, and the line of control mostly corresponds to Serbia's claim.

The term bed load or bedload describes particles in a flowing fluid (usually water) that are transported along the stream bed. Bed load is complementary to suspended load and wash load.

Bed load moves by rolling, sliding, and/or saltating (hopping).

The Shatt al-Arab dispute was a territorial dispute that took place in the Shatt al-Arab region from 1936 until 1975. The Shatt al-Arab was considered an important channel for the oil exports of both Iran and Iraq, and in 1937, Iran and the newly independent Iraq signed a treaty to settle the dispute. In the 1975 Algiers Agreement, Iraq made territorial concessions—including the Shatt al-Arab waterway—in exchange for normalized relations. In return for Iraq agreeing that the frontier on the waterway ran along the entire thalweg, Iran ended its support for the Peshmerga in the Second Iraqi–Kurdish War. The Iraqi government reneged on the agreement shortly before launching the Iran–Iraq War in 1980, but accepted it once more after the war.