Bahr el-Ghazal (Wadi)

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Bahr el-Ghazal
Soro
The Bahr el-Ghazal between Lake Chad and the Bodélé Depression (from southwest to northeast in gray-blue)

The Bahr el-Ghazal between Lake Chad and the Bodélé Depression (from southwest to northeast in gray-blue)

Data
location ChadChad Chad
regions of Hadjer-Lamis , Barh El Gazel and Borkou
River system Shari
source Chad north of Massaguet
13 ° 1 '11 "  N , 15 ° 27' 23"  O
Source height 285  m
muzzle Silting up in the sedimentary basin of the Bodélé Depression Coordinates: 17 ° 1 ′ 52 ″  N , 18 ° 13 ′ 15 ″  E, 17 ° 1 ′ 52 ″  N , 18 ° 13 ′ 15 ″  E
Mouth height approx.  150  m
Height difference approx. 135 m
Bottom slope approx. 0.25 ‰
length As the crow flies 530 km

The Bahr el-Ghazal is a wadi in Chad .

meaning

The Bahr el-Ghazal is located in the Chadian Sahara and is the overflow channel of Lake Chad . It limits its maximum flood level by diverting water into the Bodélé Depression . It thus represents an extension of the Shari , the main tributary of Lake Chad. The valley runs through the regions of Hadjer-Lamis , Barh El Gazel and Borkou . Today's dry canyon functioned as a paleo river within the mega-Lake Chad ; it was last around 1000 BC. BC water-bearing and overgrown with oysters . The last time it happened was in 1962 and 1964 that water penetrated 50 km into the Bahr el Ghazal.

course

The Chadse with the Bahr el-Ghazal (right)

The valley path of the Bahr el-Ghazal has its origin at the overflow threshold of Lake Chad , which lies at its southeastern tip on the other side of the archipelago of dune ridges with dune valleys that are flooded during floods. This point is about 60 km north of the city of Massaguet . The valley path meanders in a general north-northeast direction through the sea of ​​dunes, which stretches from here to Erg Diourab .

The Bahr el Ghazal can be as Wadi to the place Koro Toro pursued, but he would theoretically only at the lowest point of the Bodélé- sink end at an altitude of 150 meters above sea level, some 130 km off Faya.

A road connection accompanies the Bahr el-Ghazal along its entire length from the capital N'Djamena in the south to Faya-Largeau north of the Bodélé Depression.

Individual evidence

  1. ↑ Nick Drake and Charlie Bristow: Shorelines in the Sahara (2006) For the height of the overflow threshold of Lake Chad, see page 4 of the PDF file 967 kB
  2. ↑ Height information according to OpenCycleMap
  3. ↑ Measure distance with google maps
  4. ↑ Marc Leblanc, Guillaume Favreau, Jean Maley, Yahaya Nazoumou, Christian Leduc, Frank Stagnitti, Peter J. van Oevelen, François Delclaux, Jacques Lemoalle: Reconstruction of Megalake Chad using shuttle radar topographic mission data. In: Palaeogeography, Palaeoclimatology, Palaeoecology , 239, 2006, pp. 16-27, doi: 10.1016 / j.palaeo.2006.01.003 .
  5. ↑ Chad . ( Memento of September 24, 2012 in the Internet Archive ) (PDF; 173 kB; p. 10) Ramsar
  6. ↑ Erg Diourab at Geonames

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