Rovuma River
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Ruvuma River, formerly also known as the Rovuma River, is a river in the
African Great Lakes The African Great Lakes ( sw, Maziwa Makuu; rw, Ibiyaga bigari) are a series of lakes constituting the part of the Rift Valley lakes in and around the East African Rift. They include Lake Victoria, the second-largest fresh water lake in th ...
region. During the greater part of its course, it forms the border between
Tanzania Tanzania (; ), officially the United Republic of Tanzania ( sw, Jamhuri ya Muungano wa Tanzania), is a country in East Africa within the African Great Lakes region. It borders Uganda to the north; Kenya to the northeast; Comoro Islands ...
and
Mozambique Mozambique (), officially the Republic of Mozambique ( pt, Moçambique or , ; ny, Mozambiki; sw, Msumbiji; ts, Muzambhiki), is a country located in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi ...
(in Mozambique known as ''Rio Rovuma''). The river is long, with a
drainage basin A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, ...
of in size. Its mean annual
discharge Discharge may refer to Expel or let go * Discharge, the act of firing a gun * Discharge, or termination of employment, the end of an employee's duration with an employer * Military discharge, the release of a member of the armed forces from ser ...
is at its mouth.


Overview

The lower Ruvuma river is formed by the junction at of two branches of nearly equal importance, the longer of which, the Lujenda, comes from the south-west, the other, which still bears the name Ruvuma, from the west. Its source lies on an undulating plateau, high, immediately to the east of
Lake Nyasa Lake Malawi, also known as Lake Nyasa in Tanzania and Lago Niassa in Mozambique, is an African Great Lake and the southernmost lake in the East African Rift system, located between Malawi, Mozambique and Tanzania. It is the fifth largest fre ...
, at , the head-stream flowing first due west before turning south and east. In its eastward course, the Ruvuma flows near the base of the escarpment of an arid
sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicat ...
plateau In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides ...
to the north, from which direction the streams, which have cut themselves deep channels in the plateau edge, have almost all short courses. On the opposite bank the Ruvuma receives, besides the Lujenda, the Msinje River and Luchulingo River, flowing in broad valleys running from south to north. The Lujenda rises in proximity to Lake Chilwa, in the small
Lake Chiuta Lake Chiuta is a shallow lake on the border between Malawi and Mozambique. It lies to the north of Lake Chilwa and to the south of Lake Amaramba, which has no outlet, and the lakes are separated by a sandy ridge. Both lakes lie in a graben which ...
(), the
swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...
s to the south of this being separated from Chilwa only by a narrow wooded ridge. The stream which issues from Chiuta passes by a swampy valley into the narrow Lake Amaramba, from which the Lujenda River finally issues as a stream wide. Lower down it varies greatly in breadth, containing in many parts long wooded
island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An isla ...
s which rise above the flood level, and are often inhabited. The river is fordable in many places in the
dry season The dry season is a yearly period of low rainfall, especially in the tropics. The weather in the tropics is dominated by the tropical rain belt, which moves from the northern to the southern tropics and back over the course of the year. The ...
. At its mouth it is about wide. The lower Ruvuma, which is often wide but generally shallow, flows through a swampy valley flanked by plateau escarpments containing several small
backwater Backwater or Backwaters may refer to: Music * ''Backwaters'' (album), a 1982 album by American guitarist Tony Rice * Backwater (band), a jazz fusion band from Mobile, Alabama, or this band's 1976 debut album * "Backwater", a song by Brian Eno fro ...
s of the river. The mouth is near , the boundary near the coast being formed by the parallel of . The length of the Ruvuma is about .


Bridge

A bridge called
Unity Bridge Unity may refer to: Buildings * Unity Building, Oregon, Illinois, US; a historic building * Unity Building (Chicago), Illinois, US; a skyscraper * Unity Buildings, Liverpool, UK; two buildings in England * Unity Chapel, Wyoming, Wisconsin, US; a ...
across the river between Mozambique and Tanzania was proposed as early as 1975, and although construction was started, the project was abandoned due to lack of funds. In 2002 the two national governments made a formal agreement to build a new 600 metre bridge across the river, and this was finally opened in a ceremony on 25 May 2010. The bridge is located at Negomano, inland and from the nearest surfaced road in Mozambique. The site was agreed between Presidents
Machel Machel may refer to: Surname * Graça Machel (born 1945), Mozambican politician and humanitarian, the second wife and widow of Samora Machel, third wife and widow of Nelson Mandela * Josina Machel (FRELIMO) (1945–1971), activist for Mozambican in ...
and
Nyerere Julius Kambarage Nyerere (; 13 April 1922 – 14 October 1999) was a Tanzanian anti-colonial activist, politician, and political theorist. He governed Tanganyika as prime minister from 1961 to 1962 and then as president from 1962 to 1964, a ...
because this was the site of the first entry into Mozambique by
Frelimo FRELIMO (; from the Portuguese , ) is a democratic socialist political party in Mozambique. It is the dominant party in Mozambique and has won a majority of the seats in the Assembly of the Republic in every election since the country's firs ...
forces in the
Mozambican War of Independence The Mozambican War of Independence ( pt, Guerra da Independência de Moçambique, 'War of Independence of Mozambique') was an armed conflict between the guerrilla forces of the Mozambique Liberation Front or FRELIMO () and Portugal. The w ...
on 25 September 1964. Negomano was also the location where the German forces crossed the Rovuma river on 25 November 1917.Paice, Edward, 2008, ''Tip & Run,'' Phoenix, p. 339 First foundation stones were laid on the Tanzanian and Mozambique sides on October 10th 2005. Construction was completed early 2010 and cost US$28 million. It used to be possible to cross the river with rafts (located at the Tanzanian side) that could carry 3 jeeps. The ferry sank in 2008 and has not been replaced. At low water the river is sometimes fordable with a good 4-wheel drive. A smaller bridge called Unity Two was also completed in 2007 on the upper Rovuma close to Matchedge in
Niassa Province Niassa is a province of Mozambique. It has an area of 129,056 km2 and a population of 1,810,794 (2017). It is the most sparsely populated province in the country. Lichinga is the capital of the province. There are a minimum estimated 450,000 ...
.


Notes


References

{{Rivers of Tanzania Rivers of Mozambique Rivers of Tanzania Border rivers International rivers of Africa Mozambique–Tanzania border