Logone River

Course of the Logone catchment area of the Shari

View of Logone - Birni (From the book, The earth and its Inhabitants, Africa 1893)

The Logone is an approximately 1000 km long river in Central Africa. It rises in two source rivers. The Pendé (Eastern Logone ) in the prefecture Ouham - Pendé in the Central African Republic and the Mbere ( Western Logone ) in eastern Cameroon. It flows through parts of the Central African Republic and Chad and forms with its lower reaches the border between Cameroon and Chad. As of August, the high water season of the Logone uses. In this river the Plaines d' inondation you Logone et les dépressions Toupouri and the Waza - level flooded; areas which are protected under the Ramsar Convention. With drying of the Yaeres a part of the mass of water flows back into the Logone, the other part flows into the El Beid and extends the flood season the river. He also leads the flooded areas to approximately 850,000 tons of sediment. South of N'Djamena, he joins the Chari, which flows into Lake Chad.

The catchment area of the river is approximately 78,000 km ². An important tributary is the Tsanaga.

Hydrometrie

The flow rate of the river was measured from 1948 to 1986 in Bongor, a town in Chad shortly after the mouth of the Pendé, about 450 kilometers from the mouth into the Chari, N'Djamena. It should be noted that the amount of water to the mouth reduced by the strong evaporation, because the river until there no longer has sufficient inflows to fill it up again. The observed in Bongor mean annual flow rate during this period was 492 m³ / s, fed by an area of ​​approximately 73,700 km ², a large part of the catchment area of the river. In his latest piece, in N'Djamena, there were 400 m³ / s

The average monthly flow of the river Longone measured at the hydrological station of Bongor ( in m³ / s) ( Calculated using the data for a period of 38 years, 1948-1986 )

Population

In the eastern lower Logoneniederung several historical Sultanate ( Kousséri, Logone - Birni, Makari - Goulfey and others) formed out in the Kotoko people who were politically dependent on the large empires of Bornu or Baguirmi and today belong to Cameroon.

History

In Chad, the administrative regions and Logone Occidental Logone Oriental are named after the river; Upper - Logone was an administrative district of the German colony of Cameroon.

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